Catálogo de Manutenção de Correiais Industriais PDF
Catálogo de Manutenção de Correiais Industriais PDF
Catálogo de Manutenção de Correiais Industriais PDF
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Table of Contents Installation Guide 2
Table of Contents
Installation
V-Belts
V-Belts 3
Banded Belts
Torque Team® V-Belts 16
Poly-V® Belts 25
Specialty Belts
Variable Speed Belts 33
Synchronous Belts
Synchronous Belts 35
Maintenance
Troubleshooting
V-Belts
Installation Guide
Check sheaves for cleanliness, damage and wear each time belt Industry Standard Groove Dimensions for V-Belt Sheaves
maintenance is performed and whenever belts are changed.
The inspection procedure is described on page 7 of this guide. Groove File Break All dB
Angle Sharp Corners
ᴕ
Use the Groove Dimensions Tables 1 and 2 (on pages 4-6) and bg RB
tolerance data below as a reference to determine if
excessive sheave wear has occurred. They can also aid in a
hg
replacement belt cross section selection, if necessary.
Diameter
Diameter
Outside
The tables are based on industry standard dimensions for
Datum
V-belt sheaves. Always check the original sheave specifications Sg Se
if possible. Variances from industry standards can occur to
provide for special design or performance requirements. Standard Groove Dimensions
Face Width of Standard and Deep Face Width = Sg (Ng – 1) + 2 Se
Groove Sheaves Where: Ng = Number of Grooves
Table 1 Groove Dimensions
Groove
ᴕ
Angle hg RB db Sg
Cross
Section Outside Diameter Range ±0.33 bg bg Min. Min. ±0.0005 ±0.025 Se Se
(2) The “A” values shown for the A/B combination sheaves are the
Minimum geometrically-derived values. These values may be different than those
Cross Recommended shown in manufacturer’s catalogs.
Section Datum Diameter Range Datum Diameter 2a Summation of the deviations from “S g ” for all grooves in any one sheave
shall not exceed ±0.050 in.
Up through 5.40 A: 3.0 The variation in datum diameter between the grooves in any one sheave
A, AX 0.250 must be within the following limits: Up through 19.9 in. outside diameter
Over 5.40 AX: 2.2 and up through 6 grooves: 0.010 in. (add 0.0005 in. for each
additional groove).
Up through 7.00 B: 5.4
B, BX 0.350 20.0 in. and over on outside diameter and up through 10 grooves: 0.015 in.
Over 7.00 BX: 4.0 (add 0.0005 in. for each additional groove).
This variation can be obtained easily by measuring the distance across
A, AX & B, BX
Combination
A, Up through 7.40 (1) A: 3.6 (1) two measuring balls or rods placed diametrically opposite each other in a
AX AX: 2.8 0.620 (2) groove. Comparing this “diameter over balls or rods” measurement between
Over 7.40
grooves will give the variation in datum diameter.
B, Up through 7.40 (1) A: 5.7 (1) Deep groove sheaves are intended for drives with belt offset such as
BX BX: 4.3 0.280 (2) quarter-turn or vertical shaft drives. (See RMA Power Transmission Belt
Over 7.40 Technical Information Bulletin IP-3-10, V-Belt Drives with Twist).
Up through 7.99 Joined belts will not operate in deep groove sheaves.
C: 9.0
C, CX Over 7.99 to and including 12.00 0.400 Also, A and AX joined belts will not operate in A/AX and B/BX
CX: 6.8 combination grooves.
Over 12.00
Up through 12.99
D Over 12.99 to and including 17.00 D: 13.0 0.600
Over 17.00
Up through 24.00
E E: 21.0 0.800
Over 24.00
Groove Sg
ᴕ
Cross hg
Section Outside Diameter Range Angle ±0.33 bg bg Min. 2a ±0.025 Se Se
V-Belts
Installation Guide
Industry Standard Groove Dimensions for HY-T® Wedge Belt Drives
Groove
Groove File Break File Break
Angle
Angle All Sharp All Sharp
dB
ᴕ
Corners dB Corners
ᴕ
be bg
be he
& RB
bg a
a hg R B
hg
Diameter
Effective
Outside Diameter
Effective and
Diameter
Diameter
Diameter
Sg Se Sg
Outside
Se
Pitch
Pitch
Standard Groove Dimensions Deep Groove Dimensions
Face Width of Standard and Deep Face Width = Sg (Ng – 1) + 2 Se
Groove Sheaves Where: Ng = Number of Grooves
Groove
Angle Minimum
Cross Standard Groove ±0.25 bg be hg RB db Sg Recommended
S
Section Outside Diameter Degrees ±0.0005 Ref. Min. Min. ±0.0005 ±0.015 e Outside Diameter 2a
Summation of the deviations from “S g ” for all grooves in any one sheave shall This variation can easily be obtained by measuring the distance across two
not exceed ±0.031 in. The variations in pitch diameter between the grooves in measuring balls or rods placed in the grooves diametrically opposite each
any one sheave must be within the following limits: other. Comparing this “diameter over balls or rods” measurement between
Up through 19.9 in. outside diameter and up through 6 grooves – 0.010 in. grooves will give the variation in pitch diameter.
(add 0.0005 in. for each additional groove). Deep groove sheaves are intended for drives with belt offset such as quarter-turn
20.0 in. and over on outside diameter and up through 10 grooves – 0.015 in. or vertical shaft drives (see Power Transmission Belt Technical Information
(add 0.0005 in. for each additional groove). Bulletin IP-3-10). They may also be necessary where oscillations in the center
distance may occur. Joined belts will not operate in deep groove sheaves.
Groove Minimum
be
Cross Standard Groove Angle ±0.25 b g be RB db sg Recommended
Section Outside Diameter Degrees ±0.005 Ref. h g Min. Min. ±0.0005 ±0.015 s e Outside Diameter 2a 2he
Summation of the deviations from “S g ” for all grooves in any one sheave shall This variation can easily be obtained by measuring the distance across two
not exceed ±0.031 in. The variations in pitch diameter between the grooves in measuring balls or rods placed in the grooves diametrically opposite each
any one sheave must be within the following limits: other. Comparing this “diameter over balls or rods” measurement between
Up through 19.9 in. outside diameter and up through 6 grooves – 0.010 in. grooves will give the variation in pitch diameter.
(add 0.0005 in. for each additional groove). Deep groove sheaves are intended for drives with belt offset such as quarter-turn
20.0 in. and over on outside diameter and up through 10 grooves – 0.015 in. or vertical shaft drives (see Power Transmission Belt Technical Information
(add 0.0005 in. for each additional groove). Bulletin IP-3-10). They may also be necessary where oscillations in the center
distance may occur. Joined belts will not operate in deep groove sheaves.
V-Belts
Installation Guide
1. Inspect sheaves of the belt should be flush with or slightly above the outer
The following sections outline installation procedures that will diameter of the sheave. Remember that if the belt top is below
ensure maximum life and performance for your V-belts. the sheave’s outer diameter, the groove is worn. Perform
further inspection if possible. Use the Groove Dimension Tables
Check sheaves for cleanliness, damage and wear whether you 1 and 2 (on pages 3-6) to determine if excessive wear has
are replacing an existing belt, performing routine maintenance occurred or to select replacement belts and sheave cross sections.
or installing a new drive.
2. Install hardware
WARNING Always remember to select the correct sheave. Then, after
Disconnect power supply to the machine before removing you make the correct selection, be sure to install the
or installing sheaves or belts. sheaves correctly.
°
36
e
°
to
r1
.0
Standard
13
D
Section
PO
12.0 to 12.99
34°
Use a stiff brush to remove rust and dirt. Use a soft cloth to
wipe off oil and grease. Select the proper sheave groove gauge
and template for the sheave diameter. Insert the gauge in the
groove and look for voids that indicate dishing or other uneven
and abnormal wear.
Tighten the setscrew in the flange only enough to hold the 5. How to install split taper bushing sheaves
assembly in position. Put the bushing loosely in the sheave and start the capscrews.
Tighten each pull-up bolt alternately and evenly. Place the assembly on the shaft. Align both edges of the sheave
with the edges of its mating sheave (example: the sheave on
Recheck alignment and completely tighten the setscrew on the driven shaft).
the shaft.
Tighten the capscrews according to the instructions
furnished with the bushings.
4. How to remove a sheave with a QD® hub Turn the bolts alternately and evenly until the sheave has loosened.
Place two of the pull-up bolts in the tapped holes in the sheave.
Remove the sheave/flange assembly from the shaft.
Turn the bolts alternately and evenly. They will push against the
bushing flange and act as jackscrews to break the grip between
the bushing and the hub.
Taper-Lock Bushing
Split Taper Bushing
If the sheaves are made for split taper 7. How to install a sheave made
bushings, follow these installation and with a taper-lock hub
Look at the bushing and the hub. Each has a set of half-holes.
removal instructions: The threaded holes in the hub are the mates to the
non-threaded holes in the bushing.
V-Belts Installation Guide 9
V-Belts
Installation Guide
Insert the bushing in the hub and slide it onto the shaft. Align a
threaded hub hole with non-threaded bushing hole.
Start the setscrews into the holes that are threaded in the hub
only. Do not tighten the setscrews yet.
9. Check alignment
Proper alignment is essential for long V-belt life. Check belt
alignment whenever you maintain or replace belts or Misaligned Aligned
whenever you remove or install sheaves. Limit misalignment
to 1/2 degree or approximately 1/10 inch per foot of
center distance.
Use a belt gauge to verify the old belt cross section when belt
identification is no longer legible (Figure B).
.4
22
.0 O °
Ov
42 .
40
Th .
.D
O.D 22.4
ru
1 in. 8V
er
°
8V 5/8 in. 5V
16
3/8 in. 3V
The illustration above shows the correct way to check
Up to 16.00
alignment between two sheaves with a straight edge. Check O.D.
both front and back alignment. Straight edge should touch 38°
11. Matching belts Never force belts into a sheave with a tool such as a
When using multiple grooved sheaves, be sure that all of the screwdriver or a wedge. Doing so may rupture the envelope
belts are the same brand. Always replace complete sets of fabric or break the cords.
V-belts even if only one is worn or damaged.
For example, if you are installing a B75 HY-T® Plus belt, the
minimum allowable center distance for installation is 1.25
inches. For belt take-up, the minimum allowance above center
to maintain tension is 2 inches.
12. How to install belts
After you correctly install and align the sheaves, you can install
the belts. Shorter Center Distance for V-Belt Installation
Always move the drive unit so you can easily slip the belts into
the grooves without force.
Center Distance
Over 85 to and including 112 1.00 1.25 1.60 1.50 2.00 2.50
Over 112 to and including 144 1.00 1.25 1.80 1.50 2.10 2.00 2.90 3.00
Over 144 to and including 180 1.25 1.80 2.00 2.20 2.00 3.00 2.50 3.50
Over 180 to and including 210 1.50 1.90 2.00 2.30 2.00 3.20 2.50 4.00
Over 210 to and including 240 1.50 2.00 2.00 2.50 2.50 3.20 2.50 4.50
Over 240 to and including 300 1.50 2.20 2.00 2.50 2.50 3.50 3.00 5.00
Over 300 to and including 390 2.00 2.70 2.60 3.60 3.00 6.00
Over 390 2.50 2.90 3.00 4.10 3.50 1.5% of belt length
V-Belts Installation Guide 11
V-Belts
Installation Guide
Table 4 HY-T® Wedge and Wedge TLP™ V-Belts
Over 475 to and including 710 0.8 1.4 1.0 2.1 1.2
Over 710 to and including 1060 0.8 1.4 1.0 2.1 1.5 3.4 1.5
Over 1060 to and including 1250 0.8 1.4 1.0 2.1 1.5 3.4 1.8
Over 1250 to and including 1700 0.8 1.4 1.0 2.1 1.5 3.4 2.2
Over 1700 to and including 2000 1.0 2.1 1.8 3.6 2.5
Over 2000 to and including 2360 1.2 2.4 1.8 3.6 3.0
Over 2360 to and including 2650 1.2 2.4 1.8 3.6 3.2
Over 2650 to and including 3000 1.2 2.4 1.8 3.6 3.5
Over 3000 to and including 3550 1.2 2.4 2.0 4.0 4.0
80%
60%
Common sense rules of V-belt tensioning
40%
The ideal tension is the lowest tension at which the belt will not
20% slip under peak load conditions.
0%
Check the belt tension frequently during the first 24-48 hours
‹ Under-Tensioned Over-Tensioned › of run-in operation.
Do not over-tension belts. Doing so will shorten belt and bearing life.
Belt Tension
Keep belts free from foreign materials that may cause slippage.
Optimal Belt Tension Inspect the V-drive periodically. Re-tension the belts if they
Under-Tensioned are slipping.
Over-Tensioned
Maintain sheave alignment with a strong straight-edge tool
Proper tension is essential for maximum belt life and efficiency. while tensioning V-belts.
V-Belts Installation Guide 12
English or SI units.
Cost ($)
60% $900
40% $600
20% $300
$80
$0
0% $0
Thumb Plunger TensionRite®
Test Frequency Meter
Percent Accuracy
Cost ($)
Deflection Principle
Plunger-type gauges utilize the deflection principle to check the
tension of a belt drive.
The gauge deflects the center of the belt span and the force of
this deflection is compared to a target deflection force for the
particular span. Then, one can adjust the belt tension until the
actual deflection force equals the target.
V-Belts Installation Guide 13
V-Belts
Installation Guide
Measuring the Span Length Table 5 Belt Deflection Force
Span Len
gth Uncogged HY-T® Cogged Torque-Flex®
Belts and Uncogged and Machined Edge
HY-T® Torque Team® Torque Team® Belts
Smallest
Sheave
Cross Diameter New Used New Used
Force Section Range RPM Range Belt Belt Belt Belt
Smallest
Sheave 2.65-3.65 1000-2500 4.6 5.4
Cross Diameter New Used New Used
2.65-3.65 2501-4000 4.0 4.7
Section Range RPM Range Belt Belt Belt Belt 3VT
4.12-6.9 1000-2500 6.3 7.6
1000-2500 4.9 3.3
2.2-2.4
4.12-6.9 2501-4000 5.8 6.9
2501-4000 4.3 2.9
7.1-10.9 500-1740 18.5 22.1
1000-2500 5.1 3.6 6.2 4.2
2.65-3.65
7.1-10.9 1741-3000 16.4 19.6
2501-4000 4.4 3.0 5.6 3.8 5VT
11.8-16 500-1740 21.6 25.8
3V, 3VX 1000-2500 7.3 4.9 7.9 5.3
11.8-16 1741-3000 19.4 23.2
4.12-6.90 2501-4000 6.6 4.4 7.3 4.9
12.5-17.0 200-850 43.1 51.6
500-1749 15.2 10.2
12.5-17.0 851-1500 35.3 42.2
1750-3000 13.2 8.8 8VT
4.4-6.7
18.0-22.4 200-850 51.3 61.4
3001-4000 8.5 5.6
18.0-22.4 851-1500 46.1 55.2
500-1740 18.9 12.7 22.1 14.8
7.1-10.9
1741-3000 16.7 11.2 20.1 13.7
V-Belts
Installation Guide
The following sections detail other issues that
could arise during V-belt drive installation:
Driven
14. Belt guards
Driver
Driven
Driver
Driven
Kiss idler
Inside idler Unlike the back side idler, the kiss idler does not penetrate the
belt span and create a back bend. Consequently, the kiss idler
does not contribute to premature failure. The kiss idler can help
A V-grooved idler located on the inside of the belts on the slack
control belt vibration and whip on drives subject to shock and
side of the drive is preferable to a back side idler. Locate the
pulsating loads. When using a kiss idler, make sure the diameter
idler near the large sheave to avoid reduction of the arc of
of the flat pulley is at least 1.5 times the diameter of the small
contact with the small sheave.
sheave on the slack side.
Note that the size of the V-idler pulley should be equal to or
larger (preferably) than the diameter of the small sheave.
Banded Belts Installation Guide 16
WARNING
Disconnect power supply to the machine before removing
or installing sheaves or belts.
WARNING
Do not reinstall damaged or worn sheaves on equipment.
°
36
e
to
r1
.0
Standard
13
D
Section removal instructions:
PO
12.0 to 12.99
34°
3. How to install a sheave with a QD® hub
Insert the bushing in the hub and line up bolt holes.
Use a stiff brush to remove rust and dirt. Use a soft cloth to Hold the loosely-assembled unit so the bushing flange points
wipe off oil and grease. Select the proper sheave groove gauge toward the shaft bearings. Reverse mounting the QD® bushing
and template for the sheave diameter. Insert the gauge in the can be advantageous for some applications.
groove and look for voids that indicate dishing or other uneven
and abnormal wear. Slip the unit onto the shaft and align the hub in the
desired position.
Turn the bolts alternately and evenly. They will push against the Put two of the capscrews in the tapped holes in the flange of
bushing flange and act as jackscrews to break the grip between the bushing.
the bushing and the tub.
Turn the bolts alternately and evenly until the sheave
has loosened.
Align both edges of the sheave with the edges of its mating sheave.
9. Check alignment
Proper alignment is essential for long Torque Team®
V-belt life. Check belt alignment whenever you maintain or Misaligned Aligned
replace belts or whenever you remove or install sheaves. Limit
misalignment to 1/2 degree or approximately 1/10 inch per
foot of center distance.
Use a belt gauge to verify the old belt cross section when belt
The illustration above shows the correct way to check identification is no longer legible (Figure B).
alignment between two sheaves with a straight edge. Check
both front and back alignment. Straight edge should touch
.4
22
.0 O °
40
Th .
.D
O.D 22.4
ru
1 in. 8V
er
°
8V 5/8 in. 5V
16
3/8 in. 3V
Up to 16.00
O.D.
38°
Figure A Figure B
DO NOT mix belt brands. Shorter Center Distance for V-Belt Installation
Over 85 to and including 112 1.00 1.25 1.60 1.50 2.00 2.50
Over 112 to and including 144 1.00 1.25 1.80 1.50 2.10 2.00 2.90 3.00
Over 144 to and including 180 1.25 1.80 2.00 2.20 2.00 3.00 2.50 3.50
Over 180 to and including 210 1.50 1.90 2.00 2.30 2.00 3.20 2.50 4.00
Over 210 to and including 240 1.50 2.00 2.00 2.50 2.50 3.20 2.50 4.50
Over 240 to and including 300 1.50 2.20 2.00 2.50 2.50 3.50 3.00 5.00
Over 300 to and including 390 2.00 2.70 2.60 3.60 3.00 6.00
Over 390 2.50 2.90 3.00 4.10 3.50 1.5% of belt length
Banded Belts Installation Guide 20
Over 475 to and including 710 0.8 1.4 1.0 2.1 1.2
Over 710 to and including 1060 0.8 1.4 1.0 2.1 1.5 3.4 1.5
Over 1060 to and including 1250 0.8 1.4 1.0 2.1 1.5 3.4 1.8
Over 1250 to and including 1700 0.8 1.4 1.0 2.1 1.5 3.4 2.2
Over 1700 to and including 2000 1.0 2.1 1.8 3.6 2.5
Over 2000 to and including 2360 1.2 2.4 1.8 3.6 3.0
Over 2360 to and including 2650 1.2 2.4 1.8 3.6 3.2
Over 2650 to and including 3000 1.2 2.4 1.8 3.6 3.5
Over 3000 to and including 3550 1.2 2.4 2.0 4.0 4.0
100%
100% of Belt Life Common sense rules of V-belt tensioning
Belt Life Expectancy
80% The ideal tension is the lowest tension at which the belt will not
slip under peak load conditions.
60%
Check the belt tension frequently during the first 24-48 hours
40%
of run-in operation.
20%
Do not over-tension belts. Doing so will shorten belt and
0% bearing life.
‹ Under-Tensioned Over-Tensioned ›
Keep belts free from foreign materials that may cause slippage.
Inspect the V-drive periodically. Re-tension the belts if they
Belt Tension are slipping.
Optimal Belt Tension Maintain sheave alignment with a strong straight-edge tool
Under-Tensioned while tensioning V-belts.
Over-Tensioned
English or SI units.
Cost ($)
60% $900
40% $600
20% $300
$80
$0
0% $0
Thumb Plunger TensionRite®
Test Frequency Meter
Percent Accuracy
Cost ($)
Deflection Principle
Plunger-type gauges utilize the deflection principle to check the
tension of a belt drive.
The gauge deflects the center of the belt span and the force of
this deflection is compared to a target deflection force for the
particular span. Then, one can adjust the belt tension until the
actual deflection force equals the target.
Banded Belts Installation Guide 22
A, AX Cross Section
Deflection 1/64 in. per in. of span 1000-2500 3.7 5.5 4.1 6.1
3.0-3.6
2501-4000 2.8 4.2 3.4 5.0
Mark the center of the span. At the center mark, use a
1000-2500 4.5 6.8 5.0 7.4
tension tester and apply a force perpendicular to the span 3.8-4.8
large enough to deflect the belt 1/64 inch for every inch of 2501-4000 3.8 5.7 4.3 6.4
span length (example: a 100 inch span requires a deflection of
1000-2500 5.4 8.0 5.7 9.4
100/64 inch or 19/16 inches). 5.0-7.0
2501-4000 4.7 7.0 5.1 7.6
Compare the actual deflection force with the values in
B, BX Cross Section
Tables 10 and 11 (at right and page 23).
860-2500 4.9 7.2
3.4-4.2
A force below the target value indicates under-tension. A force
2501-4000 4.2 6.2
above the target indicates over-tension.
860-2500 5.3 7.9 7.1 10.5
4.4-5.6
2501-4000 4.5 6.7 6.2 9.1
C, CX Cross Section
D Cross Section
Modulus
200-700 21.1 30.9 Factor 14270 25622 160025 55548 260040 28547 43440 58882
701-1250 18.0 26.3 (lb./in.
7.1-10.9 /in.)
1251-1900 16.7 23.4
1901-3000 15.8 23.0
200-700 26.8 39.5
Enter the required strand installation tension per rib into the
11.8-16.0 750-1250 23.5 34.7
formula, along with the Modulus Factor that corresponds to the
1251-2100 22.7 33.3
cross section of the Torque Team® belt to determine the Belt
8V Cross Section Length Multiplier.
200-850 33.0 49.3
12.5-17.0 Multiply the gauge length by the Belt Length Multiplier to
851-1500 26.8 39.9
determine the final gauge length at the installation tension.
200-850 39.6 59.2
18.0-22.4
851-1500 35.3 52.7
Example:
8VF Cross Section A 5/5V1250 belt is to be installed at 1400 lb.
The Modulus Factor is 25622 lb./in./in. from Table 11.
200-500 44.7 65.8
501-850 38.5 56.6
12.5-20.0 The installation force is divided by the number of ribs in the
851-1150 35.2 51.6
Torque Team® (1400/5 = 280 lb.).
1151-1650 33.5 49.0
The Belt Length Multiplier is calculated next.
200-500 65.9 97.6
21.2-25.0 501-850 61.2 90.6
Belt Length Multiplier = 1 + 280/25622 = 1.0109
851-1200 57.0 84.3
Banded Belts Installation Guide 24
1. Make sure the diameter of the flat idler pulley is at least 1.5
times the diameter of the small sheave.
and
2. Locate the back side idler as close as possible to the small
sheave on the slack side.
V-belt drive guards ensure cleanliness and safety. Screened,
meshed or grilled guards are preferable because they allow for
air circulation and heat escape. Driver
15. Idlers
Avoid the use of idlers if at all possible. A properly designed
Torque Team® V-belt drive will not require an idler to deliver
fully-rated horsepower. Idlers put an additional bending stress
point on belts, which reduces a belt’s horsepower rating and its Driven
life. Also, remember the smaller the idler, the greater the stress
and the shorter a belt’s life; however, if the drive design requires
an idler, observe the following design recommendations.
Kiss idler
Unlike the back side idler, the kiss idler does not penetrate the
belt span and create a back bend. Consequently, the kiss idler
does not contribute to premature failure. The kiss idler can help
Driver
Driven control belt vibration and whip on drives subject to shock and
pulsating loads. When using a kiss idler, make sure the diameter
of the flat pulley is at least 1.5 times the diameter of the small
sheave on the slack side.
Banded Belts Installation Guide 25
Poly-V ® Belts
Installation Guide
1. Inspect sheaves Table 13 Small Sheave Diameters for Electric Motors
The following sections outline installation procedures that will
For example, if you are installing a 220J8, the minimum
ensure maximum life and performance for your Poly-V® belts.
allowance below center distance is 1/2 in. If you are
working to maintain tension, the minimum allowance above
Check sheaves for cleanliness, damage and wear whether you
center distance for belt take-up is also 1/2 in.
are replacing an existing belt, performing routine maintenance
or installing a new drive.
Motor Standard Motor RPM
Nameplate
WARNING Horsepower
3450 1750 1160 870 675 575
Disconnect power supply to the machine before removing
or installing sheaves or belts. Small Sheave Diameters (in.)
a
30 5.25 6.75 6.75 9.00 10.00
rt
40 6.00 6.75 8.25 10.00 10.00
Diameter
Diameter
Outside
Sg Se
100 10.00 13.00 13.00 15.00 18.00
r +0.005 hg dg
Cross Minimum Recommended Angle Groove t
S g* - 0.000 a rb Minimum ±0.0004 Se
Section Outisde Diameter (in.) ±0.50 Degrees
ᴕ
0.013 0.080
0.063
H 0.50 40 0.005 0.020 +0.000 0.041 0.0469 +0.020
±0.001
-0.005 -0.010
*Summation of the deviations from“S g” for all grooves in any one sheave shall not exceed ±0.010 in.
2. Installation
Before performing any installation, follow correct lockout
procedures to prevent any accidents.
Poly-V ® Belts
Installation Guide
QD ® Bushing
If the sheaves are made with a QD® hub,
follow these installation and
removal instructions:
Slip the unit onto the shaft and align the hub in the
desired position. Split Taper Bushing
Tighten the setscrew in the flange only enough to hold the
assembly in position.
If the sheaves are made for split taper
bushings, follow these installation and
Tighten each pull-up bolt alternately and evenly.
removal instructions:
Recheck alignment and completely tighten the setscrew on
the shaft. 5. How to install split taper bushing sheaves
Put the bushing loosely in the sheave and start the capscrews.
Place the assembly on the shaft. Align both edges of the sheave
with the edges of its mating sheave (example: the sheave on
the driven shaft).
4. How to remove a sheave with a QD® hub 6. How to remove split taper bushing sheaves
Place two of the pull-up bolts in the tapped holes in the sheave. Remove all capscrews.
Turn the bolts alternately and evenly. They will push against the Put two of the capscrews in the tapped holes in the flange of
bushing flange and act as jackscrews to break the grip between the bushing.
the bushing and the tub.
Turn the bolts alternately and evenly until the sheave
has loosened.
9. Check alignment
Proper alignment is essential for long Poly-V® belt life. Check
belt alignment whenever you maintain or replace belts or
whenever you remove or install sheaves. Limit misalignment
to 1/4 degree or approximately 1/16 inch per foot of
center distance.
Taper-Lock Bushing
7. How to install a sheave made with a
taper-lock hub
Look at the bushing and the hub. Each has a set of half-holes.
The illustration above shows the correct way to check
alignment between two sheaves with a straight edge. Check
The threaded holes in the hub are the mates to the
both front and back alignment. Straight edge should touch
non-threaded holes in the bushing.
sheaves at the four points indicated.
Insert the bushing in the hub and slide it onto the shaft. Align
a threaded hub hole with non-threaded bushing hole.
Start the setscrews into the holes that are threaded in the hub
only. Do not tighten the setscrews yet.
Place two of the setscrews in the holes that are threaded in the
bushing only.
Banded Belts Installation Guide 29
Poly-V ® Belts
Installation Guide
Laser Alignment Tool 11. Matching belts
Matching multiple belts is not necessary for most Poly-V®
belt drives. If you encounter a special application calling for
With our Laser Alignment Tool, you can quickly align drive
matching, specify “matched belts” on the order.
components to improve efficiency and reduce costly
maintenance. Much easier to use than a straight edge, it
attaches in seconds. When the highly-visible sight line lies
within the target openings, the pulley/sprockets are aligned.
Misaligned Aligned
Always move the drive unit so you can easily slip the belts into
the grooves without force.
Pulley
6 L 48
Over 60.0 to and including 80.0 0.6 0.9 0.9 Common sense rules of Poly-V®
Over 80.0 to and including 100.0 0.7 1.0 1.5 1.1 belt tensioning
Over 100.0 to and including 120.0 0.8 1.1 1.6 1.3
The ideal tension is the lowest tension at which the belt will not
Over 120.0 to and including 160.0 1.2 1.7 1.7 slip under peak load conditions.
Over 160.0 to and including 200.0 1.3 1.8 2.2
Check the belt tension frequently during the first 24-48 hours
Over 200.0 to and including 240.0 1.4 1.9 2.6 of run-in operation.
Over 240.0 to and including 300.0 2.2 3.3
Do not over-tension belts. Doing so will shorten belt and
Over 300.0 to and including 360.0 2.3 3.9 bearing life.
Over 360.0 to and including 420.0 2.6 4.6
Keep belts free from foreign materials that may cause slippage.
Over 420.0 to and including 480.0 2.9 5.2 Inspect the Poly-V® drive periodically. Re-tension the belts if
they are slipping.
Over 480.0 to and including 540.0 3.2 5.8
Over 540.0 to and including 600.0 3.6 6.5 Maintain sheave alignment with a strong straight-edge tool
while tensioning Poly-V® belts.
Banded Belts Installation Guide 31
Poly-V ® Belts
Installation Guide
Tensioning Methods
Choose one of two tensioning methods for particular span. Then, one can adjust the belt tension until
the actual deflection force equals the target.
Poly-V® belts:
Span Len Deflection
TensionRite® Belt Frequency Meter gth
.015 in. per
in. of span
Mark the center of span. At the center point, use a tension tester
and apply a force perpendicular to the span large enough to
deflect the belt 1/64 inch for every inch of span length
(example: a 100 inch span requires a deflection of 100/64 inch
or 19/16 inches).
Plunger-type gauges utilize the Deflection Principle to check the Belt Cross Small Sheave Force “F”
tension of a belt drive. Section Diameter Range (lb. per rib)
J 1.32-1.67 0.4
J 1.77-2.20 0.5
J 2.36-2.95 0.6
L 2.95-3.74 1.7
L 3.94-4.92 2.1
L 5.20-6.69 2.5
M 7.09-8.82 6.4
M 9.29-11.81 7.7
The gauge deflects the center of the belt span and the force of
M 12.40-15.75 8.8
this deflection is compared to a target deflection force for the
Banded Belts Installation Guide 32
The following few sections detail other Note that the size of the V-idler pulley should be equal to or
larger (preferably) than the diameter of the small sheave.
issues that could arise during a Poly-V® belt
drive installation:
Driven
Driver
Kiss idler
Driver
Driven
Unlike the back side idler, the kiss idler does not penetrate the
belt span and create a back bend. Consequently, the kiss idler
Inside idler does not contribute to premature failure. The kiss idler can help
control belt vibration and whip on drives subject to shock and
A V-grooved idler located on the inside of the belts on the
pulsating loads. When using a kiss idler, make sure the diameter
slack side of the drive is preferable to a back side idler. Locate
of the flat pulley is at least 1.5 times the diameter of the
the idler near the large sheave to avoid reduction of the arc of
small sheave.
contact with the small sheave.
Specialty Belts Installation Guide 33
WARNING
Disconnect power supply to the machine before removing
or installing sheaves or belts.
WARNING
Do not reinstall damaged or worn sheaves on equipment.
5. Tension
Spring loaded sheaves, which apply the tension required
to handle the design load, govern variable speed
belt tensioning.
6. Belt guards
Belt guards ensure cleanliness and safety. Screened, meshed
or grilled guards are preferable because they allow for air
circulation and heat escape. Note: refer to www.osha.org.
7. Idlers
Idlers are not recommended for variable speed drives.
RIGHT WRONG
The belt is parallel Check for misalignment
to the straight edge and offset distance “D”
Synchronous Belts Installation Guide 35
Synchronous Belts
Installation Guide
1. Inspect sprockets 2. Install hardware
The following sections outline installation procedures that Correct sprocket selection and installation is important. Before
will ensure maximum life and performance for your Continental performing any installation, follow correct lockout procedures
ContiTech synchronous belts such as Hawk Pd,® Blackhawk Pd,® to prevent any accidents.
Falcon Pd® and SilentSync® belts.
IMPORTANT: Disconnect power supply to machine before
doing ANY work.
WARNING
Disconnect power supply to the machine before removing
or installing sheaves or belts.
WARNING
Do not reinstall damaged or worn sheaves on equipment.
Use a stiff brush to remove rust and dirt. Use a soft cloth to
wipe off oil and grease.
Make sure the components are ready for installation. Clean all
shafts, removing any nicks or burrs. Clean all mating surfaces
of the sprocket, bushing and shaft. Do not use lubrication or
anti-seize solution on any of these surfaces.
Make sure the shafts are true and parallel by accurately QD® Bushing
measuring the distance between the shafts at three points
along the shaft. The distance between the shafts should be
the same at all three points as shown. If the sheaves are made with a QD® hub,
Shaft 1
follow these installation and
removal instructions:
Shaft 2
Ch e c
k2 Insert capscrews through the thru holes and into the
tapped holes.
Also, make sure the shafts are rigidly mounted. Shafts should Mount the other sprocket in a similar manner.
not deflect when the belt is tensioned.
Synchronous Belts Installation Guide 36
Check that the teeth of both sprockets are pointing in the Table 17 Torque Specifications
same direction when installing SilentSync® sprockets.
Setscrew Setscrew
Capscrew Torque Torque Size
Snug the capscrews so that the sprocket/bushing assembly can
still move on the shaft.
Bushing (in.-lb.) (ft.-lb.) (in.-lb.) (in.)
Synchronous Belts
Installation Guide
Split Taper Bushing Taper-Lock Bushing
If the sprockets are made for split taper The following instructions illustrate how
bushings, follow these installation and to install a sprocket made with a
removal instructions: taper-lock hub:
5. How to install split taper bushing sprockets 7. How to install a sprocket made with a
Put the bushing loosely in the sprocket and start the capscrews.
taper-lock hub
Place the assembly on the shaft. Align both edges of the Look at the bushing and the hub. Each has a set of half-holes.
sprocket with the edges of its mating sprocket (example: the
sprocket on the driven shaft). The threaded holes in the hub are the mates to the
non-threaded holes in the bushing.
Tighten the capscrews according to the instructions furnished
with the bushings. Insert the bushing in the hub and slide it onto the shaft. Align a
threaded hub hole with non-threaded bushing hole.
6. How to remove split taper bushing sprockets Start the setscrews into the holes that are threaded in the hub
Remove all capscrews. only. Do not tighten the setscrews yet.
Put two of the capscrews in the tapped holes in the flange of Align both edges of the sprocket with the edges of its
the bushing. mating sprocket.
Turn the bolts alternately and evenly until the sprocket Tighten the screws alternately and evenly. This procedure will
has loosened. wedge the bushing inward and cause it to contract evenly and
grip the shaft.
Remove the sprocket/bushing assembly from the shaft.
8. How to remove a sprocket made with a
taper-lock hub
Remove all the setscrews.
Place two of the setscrews in the holes that are threaded in the
bushing only.
Synchronous Belts
Installation Guide
12. How to install belts If you install a belt over one flanged sprocket and one
Before installation, inspect the belt for damage. Belts should unflanged sprocket with the sprockets already installed on the
never appear crimped or bent to a diameter less than the drive, allow the following decrease in center distance for
minimum recommended sprocket diameter. installation and increase in center distance for tensioning.
Always move the drive unit so you can easily slip the belts into
Allowance
the grooves without force. Allowance (decrease) (increase)
for Installation for Take-Up
Shorten the center distance or release the tensioning idler to
install the belt. Do not pry the belt on the sprocket. Refer to the Pitch Length 8m Belts 14m Belts 8m, 14m Belts
following Center Distance Allowance tables for the required Range (mm) (mm/in.) (mm/in.) (mm/in.)
center distance adjustment.
Less than 1525 22.5/0.9 36.5/1.4 2.5/0.1
Place the belt on each sprocket and ensure proper
1525-3050 25.0/1.0 39.0/1.5 5.0/0.2
engagement between the sprocket and belt teeth.
Greater than 3050 27.5/1.1 41.5/1.6 7.5/0.3
Lengthen the center distance or adjust the tensioning idler to
remove any belt slack.
If you install the belt over two flanged sprockets that are
Shorter Center Distance already installed on the drive, allow the following decrease in
for Synchronous Belt Installation
center distance for installation and increase in center distance
for tensioning:
Allowance
Allowance (decrease) (increase)
for Installation for Take-Up
Greater than 3050 7.5/0.3 7.5/0.3 Less than 1525 10.1/0.4 15.2/0.6 2.5/0.1
Tensioning Methods The gauge deflects the center of the belt span and the force of
this deflection is compared to a target deflection force for the
particular span. Then, one can adjust the belt tension until the
Choose one of two tensioning methods for actual deflection force equals the target.
Synchronous belts:
P, Span L
ength
TensionRite® Belt Frequency Meter
Using advanced optical technology, our TensionRite® Belt
Frequency Meter provides a simple, repeatable and reliable D, Diameter (in.) F, Force (lb.) D, Diameter
Q, Deflection (in.)
method for tensioning belts. It displays the natural vibration (in.)
frequency of the belt strand so you can closely monitor belt
tension. The device works with all industrial transmission belts
including V-belts, synchronous belts, banded belts and Poly-V®
C, Center Distance (in.)
belts and calculates the corresponding belt tension in either
English or SI units.
D-d
P=
D-d
2tan sin -1
2C
(in.)
C = Center distance
Synchronous Belts
Installation Guide
First, determine the proper deflection force to tension the Table 18 Deflection Forces for Belt Tensioning
belt. Deflection forces are listed in Table 18. Deflection forces
Deflection Forces for Belt Tensioning (lb.)
are also given on the output of the MaximizerPro™ computer
drive analysis.
0-100 RPM 101-1000 RPM 1000-Up RPM
8GTR 12 24 17 14 10 9 7
If possible, run the drive for approximately 5 minutes with or
8GTR 21 42 30 25 18 16 12
without load. Stop the drive, lock out the power source and
8GTR 36 72 51 42 30 27 21
examine alignment, capscrew torque and belt tension of the
8GTR 62 124 88 72 52 47 36
drive. Adjust the center distance to increase the belt tension to
14GTR 20 38 29 31 23 28 21
the “new” value in the Deflection Force Tables. Lock down the
14GTR 37 70 54 57 43 52 39
drive adjustments and recheck tension. Recheck the belt
14GTR 68 129 99 105 78 95 71
tension, alignment and capscrew torque after 8 hours of
14GTR 90 171 131 140 104 126 95
operation to ensure the drive has not shifted.
14GTR 125 238 181 194 144 175 131
Blackhawk Pd®
8MBH12 12 9 9 7 7 5
8MBH 22 23 17 16 12 13 10
8MBH 35 36 26 26 19 21 16
8MBH 60 62 45 45 33 36 27
14MBH 20 36 26 27 20 23 17
14MBH 42 76 55 57 42 49 36
14MBH 65 117 85 89 65 76 55
14MBH 90 162 118 123 90 105 77
14MBH 120 217 157 164 119 139 102
Hawk Pd®
8M 20 15 11 13 10 12 9
8M 30 23 17 20 15 19 14
8M 50 39 29 35 26 32 24
8M 85 69 50 61 45 56 41
14M 40 47 34 38 28 32 24
14M 55 70 51 56 41 48 35
14M 85 116 84 93 68 79 58
14M 115 162 118 130 95 110 80
14M 170 249 181 201 146 171 125
Synchronous Belts Installation Guide 42
The following few sections detail other Lock idlers firmly in place to minimize movement or deflection
during drive start-up and operation.
issues that could arise during synchronous
belt installation:
18. Teeth in mesh
Sprockets with low belt angle of less than 60 degrees or less
14. Using a fixed center distance than six teeth in mesh (TIM) will not transmit the full rated load.
A fixed center distance drive has no adjustment for Should drives be designed using less than six teeth in mesh, the
tensioning or installing the belt. Due to the tolerances of drive service life of the belt will be reduced.
components, including sprocket, belt and drive geometry,
a drive with a Fixed Center Distance is not recommended
as adequate belt tension cannot be assured. Proper belt 19. Flanged sprockets
installation requires a minimum center to center adjustment Use flanges to keep the belt in the sprocket and prevent
(refer to belt installation for center to center adjustment on “rideoff” as each belt has its own tracking characteristics. Even
page 39). In some cases, fixed center drives cannot be avoided belts with perfect drive alignment can have a tracking problem.
and should be used only with the understanding that belt life
will be reduced. Synchronous belts will have an inherent side thrust while in
motion and can be controlled with flanged sprockets. If side
thrust is severe, check the drive for sprocket alignment, parallel
15. Design factors shafts and shaft deflection.
To ensure proper belt selection, consult the appropriate
design manual for SilentSync,® Blackhawk Pd,® Falcon Pd®
or Hawk Pd.® Due to the high load capacity of these belts, make For a two sprocket drive:
sure that all of the drive components are adequately designed. A minimum requirement should be two flanges on one
Consult sprocket and other component manufacturers for sprocket for economical reasons; the smaller sprocket is
design assistance or if verification of application is needed. usually flanged.
When the center distance of the drive exceeds eight times the
16. Belt guards diameter of the smaller sprocket, it is suggested that flanges be
Belt guards ensure cleanliness and safety. Screened, meshed, included on both sides of each sprocket.
or grilled guards are preferable because they allow for air
circulation and heat escape. On vertical shaft drives, one sprocket should be flanged on
both sides and one sprocket flanged on bottom side only.
17. Idlers
Use idlers either inside or outside of the belt, preferably outside. For a multiple sprocket drive:
Idlers often function as a tensioning mechanism when the drive Two flanges are required on every other sprocket or a single
has a fixed center distance. When an idler is necessary, follow flange on every sprocket, altering sides.
several general rules:
Maintenance
Installation Guide
Belt drives are a reliable and efficient means of power Prevent Belt Whipping
transmission. Since they are essentially trouble-free, they are
ignored often and do not receive the minimal attention they
require for the full delivery of benefits over the course of a long
life of use.
Maintenance
Installation Guide
CHIRP!
CHIRP
!
Squeal is usually a result of insufficient belt tension requiring Chirp, a sound like that of a chirping bird, can occur on all types
prompt investigation. If squeal persists after checking all belts of belt drives. Never apply dressing or oil to a belt in an effort to
and adjusting tension, examine the drive itself for overloading. eliminate chirps or squeaks. Realignment of an idler may help.
Troubleshooting V-Belts Performance Analysis 46
Troubleshooting
V-Belts Performance Analysis
Cause of Failure – Excessive exposure to oil or grease has Cause of Failure – Belt has evenly spaced deep bottom cracks
caused the belt to swell, become soft and the bottom envelope from use of a substandard backside idler.
seam to “open up.”
Correction – Replace backside idler with the minimum
Correction – Provide splash guards, do not over lubricate and size recommendation.
clean belts and sheaves with gasoline.
Troubleshooting
V-Belts Performance Analysis
Cause of Failure – Split on side at the belt pitch line indicates Cause of Failure – The load carrying member has been broken
use of a sheave with a substandard diameter. by a shock load or damage during installation.
Correction – Redesigning drive to utlilize proper size sheaves. Correction – Maintain proper tensioning and observe proper
installation procedures.
Cause of Failure – Tensile breaks can be caused by high shock Cause of Failure – Tooth shear caused by belt overload
loads, foreign object between the bottom of the sheave and the condition from improper application or shock loads.
bottom of the belt or damage during installation.
Correction – Consult engineering manual to proper application
Correction – Maintain proper drive tension and installation and maintain proper belt tension.
procedures. Provide guard to keep foreign material from
coming in contact with the drive.
Cause of Failure – Back of the belt has been rubbing on a belt Cause of Failure – Web fabric wear caused by improper belt
guard or other appurtenance. and pulley fit.
Correction – Provide adequate clearance between belt and Correction – Check belt/pulley fit and replace worn or
guard or any appurtenances. out-of-spec pulleys.
Cause of Failure – Worn sheave grooves allow the joined belt Cause of Failure – Fabric wear caused by insufficient belt
to ride too low cutting through to the top band. tension or pulleys which are not to the standard Pd pulley
dimensions and tolerances.
Correction – Replace sheaves and maintain proper belt tension
and sheave alignment. Correction – Maintain proper tension and replace the
out-of-spec pulleys.
Troubleshooting V-Belts Systems 49
Troubleshooting
V-Belts Systems
Problem
Cut Thru Mismatched Belts too Belts too Hardening &
on Top Belts at Short at Long at Excessive Excessive Belt Premature Belts Turn
(Joined Belts) Installation Installation Installation Vibration Stretch Squeal Cracking Over
Possible Causes
Excessive Oil
Exposure to Elements
Pried Over Sheaves
Contact with Obstruction
Insufficient Tension
Stalled Drive Sheaves
Constant Slippage
Rough Sheaves
Substandard Sheaves
Excessive Tension
Shock Load
Foreign Material
Excessive Dust
Drive Misalignment
Worn Sheaves
Excessive Vibration
High Ambient Temperature
Drive Underbelted
Damaged Tensile Member
Incorrect Belts
Incorrect Drive Set-Up
Insufficient Take-Up
Improper Matching
Mixed Old and New Belts
Non-Parallel Shafts
Different Manufacturers
Belt/Pulley, Incompatible
Corrective Action
Lubricate properly
Clean sheaves and belt
Replace belts
Provide protection
Install properly
Check for belt length
Remove obstruction
Tension properly
Free sheaves
Replace sheaves
File smooth
Redesign drive
Operate properly
Align drive
Provide ventilation
Check for proper belt
Check machinery
Use only new belts
Use single source
Check fit
Replace pulleys
continued on page 50
Troubleshooting V-Belts Systems 50
Problem (continued)
Uneven Weathering
Ply Envelope Envelope or “Craze” Loose Cover
Broken Belts Side Split Separation Wear Wear Spin Burn Gouges Cracks and Swell
Possible Causes
Excessive Oil
Exposure to Elements
Pried Over Sheaves
Contact with Obstruction
Insufficient Tension
Stalled Drive Sheaves
Constant Slippage
Rough Sheaves
Substandard Sheaves
Excessive Tension
Shock Load
Foreign Material
Excessive Dust
Drive Misalignment
Worn Sheaves
Excessive Vibration
High Ambient Temperature
Drive Underbelted
Damaged Tensile Member
Incorrect Belts
Incorrect Drive Set-Up
Insufficient Take-Up
Improper Matching
Mixed Old and New Belts
Non-Parallel Shafts
Different Manufacturers
Belt/Pulley, Incompatible
Corrective Action
Lubricate properly
Clean sheaves and belt
Replace belts
Provide protection
Install properly
Check for belt length
Remove obstruction
Tension properly
Free sheaves
Replace sheaves
File smooth
Redesign drive
Operate properly
Align drive
Provide ventilation
Check for proper belt
Check machinery
Use only new belts
Use single source
Check fit
Replace pulleys
Troubleshooting Synchronous Belts Systems 51
Troubleshooting
Synchronous Belts Systems
Types of Failure
Excessive Load
Belt Overtensioned
Belt Undertensioned
Rough or
Damaged Sprocket
Misalignment
Worn Sprocket
Sprocket Out
of Tolerance
Debris in Sprocket
or Drive
Excessive Low
Temperature
Excessive High
Temperature
Exposure to Oil,
Solvents, Chemicals
Sprocket Diameter
Sub Minimum
Shock Loading
Excessive Sprocket
Runout
Vibrating Bearings/
Mountings
Center Distance
Greater than 8x Small
Sprocket Diameter
Sprocket Not
Properly Balanced
Belt/Sprocket
Incompatible
Legend continued on page 52
Primary Cause Possible Cause Could Cause But Not Likely
Troubleshooting Synchronous Belts Systems 52
Corrective Action
Remove obstruction or
use idler to reroute belt
Redesign drive
Replace sprocket
Align shafts
and sprockets
Replace sprocket
Use harder
sprocket material
Shield drive
Reinforce drive
structure
Moderate temperature,
especially at startup
Moderate temperature,
shield drive
Shield drive,
eliminate chemicals
Redesign drive
to increased
sprocket diameters
Redesign to reduce
wrap on backside idler
Replace sprocket
Alignment is critical
Legend
Primary Cause Possible Cause Could Cause But Not Likely
Troubleshooting Synchronous Belts Tensioning Tables 53
Synchronous Belts
Tensioning Tables
Synchronous Belt Tensioning Tables Synchronous Belts Tensioning Tables
Deflection Forces for Belt Tensioning (lb.) Belt Strand Tension (lb.)
0-100 RPM 101-1000 RPM 1000-Up RPM 0-100 RPM 101-1000 RPM 1000-Up RPM
Belt
New Used New Used New Used New Used New Used New Used Weight
Belt Type Belt Belt Belt Belt Belt Belt Belt Type Belt Belt Belt Belt Belt Belt (kg/m)
SilentSync® SilentSync®
1. T he table deflection forces and strand tensions are typically at maximum values to cover 3. Consult the TensionRite® Belt Frequency Meter manual for detailed information on using
the broad range of loads, rpm and pulley combinations for all possible drives. the frequency based tension gauge.
2. For drives where hub loads are critical, high speed drives or other drives with special 4. Continental ContiTechoffers three different levels of tension gauges to aid you in
circumstances, the belt deflection force and strand installation tension should be properly tensioning your power transmission belts. See your Sales Representative or
calculated by using formulas found in existing engineering manuals or use the Distributor for more information on tensioning gauges.
MaximizerPro™ Drive Selection Analysis Program.
Troubleshooting Wedge TLP™ V-Belts Tensioning Tables 54
1. T he table deflection forces and strand tensions are typically at maximum values to cover
the broad range of loads, rpm and pulley combinations for all possible drives.
2. For drives where hub loads are critical, high speed drives or other drives with special
circumstances, the belt deflection force and strand installation tension should be
calculated by using formulas found in existing engineering manuals or use the
MaximizerPro™ Drive Selection Analysis Program.
3. Consult the TensionRite® Belt Frequency Meter manual for detailed information on using
the frequency based tension gauge.
4. Continental ContiTech offers three different levels of tension gauges to aid you in
properly tensioning your power transmission belts. See your Sales Representative or
Distributor for more information on tensioning gauges.
Troubleshooting V-Belts Tensioning Tables 55
SPA, XPA Cross Section 1. T he table deflection forces and strand tensions are typically at maximum values to cover
the broad range of loads, rpm and pulley combinations for all possible drives.
1000-2500 N/A N/A 9.0 6.1
3.0-4.1 2. For drives where hub loads are critical, high speed drives or other drives with special
2501-4000 N/A N/A 7.9 5.2 circumstances, the belt deflection force and strand installation tension should be
1000-2500 10.1 6.7 12.4 8.3 calculated by using formulas found in existing engineering manuals or use the
4.2-5.7 MaximizerPro™ Drive Selection Analysis Program.
2501-4000 8.3 5.6 11.2 7.4
3. Consult the TensionRite® Belt Frequency Meter manual for detailed information on using
1000-2500 14.6 9.7 15.3 10.1 the frequency based tension gauge.
5.7-10.1
2501-4000 12.6 8.5 13.7 9.2 4. C ontinental ContiTech offers three different levels of tension gauges to aid you in
properly tensioning your power transmission belts. See your Sales Representative or
Distributor for more information on tensioning gauges.
Troubleshooting V-Belts Tensioning Tables 56
Noncogged Single,
Torque Team®* & Cogged Single Belt Weight
Torque Team Plus®* Belts & Torque Team®* (kg/meter)
A, AX Cross Section
1000-2500 84 56 94 62
3.0-3.6
2501-4000 64 41 76 51 A=0.100
1000-2500 105 68 115 76
3.8-4.8
2501-4000 88 57 99 65
1000-2500 124 83 147 88 AX=0.930
5.0-7.0
2501-4000 108 72 118 78
B, BX Cross Section
C, CX Cross Section
D Cross Section
V-Belts
Tensioning Tables
Belt Strand Tension (lb.)
Noncogged Single,
Torque Team®* & Cogged Single Belt Weight
Torque Team Plus®* Belts & Torque Team®* (kg/meter)
*Multiply table values by the number of Torque Team® ribs to achieve recommended tensioning value.
1. T he table deflection forces and strand tensions are typically at maximum values to cover the broad range of loads, rpm and pulley combinations for all
possible drives.
2. For drives where hub loads are critical, high speed drives or other drives with special circumstances, the belt deflection force and strand installation
tension should be calculated by using formulas found in existing engineering manuals or use the MaximizerPro™ Drive Selection Analysis Program.
3. Consult the TensionRite® Belt Frequency Meter manual for detailed information on using the frequency-based tension gauge.
4. C ontinental ContiTech offers three different levels of tension gauges to aid in properly tensioning power transmission belts. See your Sales
Representative or Distributor for more information on tensioning gauges.
Power Transmission Belt Drive System 1
WARNING
DO NOT USE THE PRODUCTS IN THIS GUIDE IN AIRCRAFT
APPLICATIONS. THE PRODUCTS IN THIS GUIDE ARE NOT
INTENDED FOR USE IN AIRCRAFT APPLICATIONS.
The products in this guide have been tested under controlled laboratory
conditions to meet specific test criteria. These tests are not intended to
reflect performance of the product or any other material in any specific
application, but are intended to provide the user with application guidelines.
The products are intended for use by knowledgeable persons having the
technical skills necessary to evaluate their suitability for specific applications.
Continental ContiTech assumes no responsibility for the accuracy of this
information under varied conditions found in field use. The user has
responsibility for exercising care in the use of these products.
Tools
Installation Guide
Drive Maintenance Materials
Items SAP#
SM
Contact ContiTech. Engineering Next Level
ContiTech AG
As a division of the Continental Group, ContiTech
NAFTA Headquarters
is a recognized innovation and technology leader
703 S. Cleveland Massillon Road
in natural rubber and plastics. As an industry partner
Fairlawn, OH 44333-3023 U.S.A.
with a firm future ahead of us, we engineer solutions
1-800-235-4632
both with and for our customers around the world.
Our bespoke solutions are specially tailored to meet
Canada the needs of the market. With extensive expertise
1-888-275-4397 in materials and processes, we are able to develop
FAX 1-888-464-4397 cutting-edge technologies while ensuring we
make responsible use of resources. We are quick
to respond to important technological trends, such
Mexico as function integration, lightweight engineering
1-800-439-7373 and the reduction of complexity, and offer a range
FAX 1-800-062-0918 of relevant products and services. That way, when
you need us, you’ll find we’re already there.
Germany
+49 (0)511 938 02
mailservice@contitech.de
www.contitech.us