Introduction – Impact Wrenches

Power you can depend on

Atlas Copco impact wrenches are designed to provide
dependability and a long, trouble-free service life in
the toughest conditions. Few other tools can match the
Atlas Copco impact wrench when it comes to flexibility,
capacity-to-weight ratio and simplicity in use and main-
tenance.

Atlas Copco´s powerful, high-speed Shut-off mechanism for LTS17

impact wrenches are designed to cut and LTS27
production times by providing rapid run- The purpose of the torsion bar principle
down and fast tightening. Impact wrench- is to increase the bounce angle of the im-
es build up torque in joints through a pact mechanism. The tool shuts off once
series of rotary impacts, where air pres- it has reached the pre-set bounce angle.
sure and tightening time affect the torque The LTS27 HR43 has a female hexagon
obtained. As a general rule, if a wrench quick change chuck for separate torsion
impacts longer than 5 seconds on a fas- bars with a 1/2" square drive especially
tener, a larger wrench should be used in suitable for tightening different bolt sizes
order to achieve better durability. at the same workplace. The LTS17 and
The LMS models are non shut-off, 27 HR13 have a built-in torsion bar to
which means they will shut off once the increase accuracy and reduce vibration
operator releases the trigger, whereas levels. These models are designed for
the LTS models are designed to shut off frequent tightening of the same bolt size.
automatically when a preset torque is
reached.
Shut-off mechanism for LTS37
and LTS57
LMS
The purpose of the added bounce en-
The LMS is a non shut-off impact wrench ergy principle is that the energy content
with extraordinary power to weight quali- of each impact is added to the next and
ties and virtually no reaction force during following impact until the preset level is
tightening. The torque is applied to the reached and the tool shuts off.
joint, not to your wrist.
These tools are typically used where
fast tightening or disassembly is needed
and the range covers recommended
torque levels between 7-5000 Nm.

LTS
The LTS models cover a recommended
torque range of 22-650 Nm.
Place the tool on the joint to be fas-
tened and press the trigger. The tool will
shut-off automatically at a predetermined
Impact Wrenches

torque level, thus providing an operator

independent tightening. This means cor-
rect tightening with less risk of over-tight-
ening due to operator influence. It also
means higher joint quality, improved op-
erator confidence and reduced tighten-
ing time. There are two different shut-off
principles for the LTS models.

Pneumatic Assembly Tools 25

impact wrenches.indd 25 2010-02-22 13:29:07

 Selection Guide

M6 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30 M36 M42 M45 M48

Nm 9.8 24 47 81 128 197 275 385 518 665 961 1310 2280 3640 4510 5450
LMS LMS06 LMS17 LMS17 LMS27 LMS37 LMS37 LMS47 LMS57 LMS57 LMS61 LMS61 LMS67 LMS86 LMS86 LMS86 LMS86
LMS06 LMS17 LMS27 LMS37 LMS37 LMS47 LMS57 LMS57 LMS57 LMS67 LMS67 LMS67 LMS86
8.8

LTS LTS17 LTS17 LTS27 LTS27 LTS37 LTS57 LTS57 LTS57

LTS17 LTS17 LTS37 LTS37 LTS37 LTS57 LTS57

M6 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30 M36 M42 M45
Nm 14 33 65 114 181 277 386 541 728 935 1350 1840 3210 5110 6340
LMS LMS06 LMS17 LMS27 LMS27 LMS37 LMS37 LMS47 LMS57 LMS61 LMS61 LMS67 LMS86 LMS86 LMS86 LMS86
LMS17 LMS17 LMS27 LMS37 LMS47 LMS47 LMS57 LMS61 LMS67 LMS67 LMS86
10.9

LTS LTS17 LTS17 LTS27 LTS37 LTS57 LTS57 LTS57

LTS17 LTS27 LTS37 LTS37 LTS57 LTS57

M6 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27 M30 M36 M42

Nm 17 40 79 136 217 333 463 649 874 1120 1620 2210 3850 6140
LMS LMS06 LMS17 LMS27 LMS27 LMS37 LMS47 LMS57 LMS61 LMS61 LMS67 LMS86 LMS86 LMS86 LMS86
LMS17 LMS17 LMS27 LMS37 LMS47 LMS57 LMS61 LMS67 LMS67 LMS86
12.9
LTS LTS17 LTS17 LTS27 LTS37 LTS57 LTS57
LTS17 LTS27 LTS37 LTS37 LTS57 LTS57

 = HEAVY DUTY
The torque figures are normal tightening torque for untreated oil-smeared and rust-protected bolts and nuts
 = EXTRA HEAVY DUTY in the most common strength grades. The torque figures correspond to approximately 63% of tensile stress.
Impact Wrenches

26 Pneumatic Assembly Tools

impact wrenches.indd 26 2010-02-24 15:34:16

 Shut-off Pistol Grip Models

LTS models
l Recommended operating range
22-650 Nm.
l Fast tightening and disassembly.
l Negligible reaction force.
l Low weight.
l High power-to-weight ratio.
l Tightening time should not exceed
5 seconds, to avoid excess wear on
the tool.
l Automatic shut-off shortens tightening
time.
l Consistent torque accuracy.
l No over-torquing.
l Adjustable torque setting.
l LTS17 and LTS 27 are lubrication free.
l LTS17 and LTS27 – Torsion bar principle.
l LTS27 HR43 – Quick change chuck for
separate torsion bars.
l LTS37 and LTS57 – Added bounce en-
ergy principle.

Length Air Rec. Air

Bolt Square Free excl consumption hose inlet
size drive Torque range Impacts speed Weight anvil CS distance under load size thread
Model mm in Nm ft lb per min r/min kg lb mm mm l/s cfm mm in Ordering No.
LTS17 HR10 8-10 3/8 22b - 45 16 - 33 960 10000 2.0 4.4 214 24 6 13 8 3/8 8434 1172 19
LTS17 HR13 8-10 1/2 34b - 66 25 - 49 1100 10000 2.0 4.4 214 24 6 13 8 3/8 8434 1172 01
LTS27 HR13-1 10-12 1/2 50b - 110 37 - 82 960 9300 2.6 5.7 226 29 6 13 10 3/8 8434 1272 00
LTS27 HR13-2 12-14 1/2 70b - 140 52 - 104 1100 9300 2.6 5.7 226 29 8 17 10 3/8 8434 1272 18
LTS27 HR43 10-14 7/16a 40b - 165 29 - 123 1200 11500 2.5 5.5 164 29 8 17 10 3/8 8434 1272 59
LTS37 HR13 12-14 1/2 80c - 340 59 - 250 1140 8800 3.7 8.1 200 33 10 21 10 3/8 8434 1372 41
LTS37 HR16 12-16 5/8 120c - 340 88 - 250 1140 8800 3.7 8.1 220 33 10 21 10 3/8 8434 1372 09
LTS57 HR20 18-20 3/4 200c - 500 147 - 369 960 4600 5.3 12.0 225 38 13 27 10 3/8 8434 1571 08
LTS57 HR25 18-22 1 200c - 650 147 - 479 960 4600 5.3 12.0 225 38 13 27 10 3/8 8434 1571 40
a
Female hex. quick change chuck – 1/2" square drive on torsion bar.
b
Min torque at 3 bar air pressure and min setting of torque control mechanism.
c
Min torque at 4 bar air pressure and min setting of torque control mechanism.
Impact Wrenches

Pneumatic Assembly Tools 27

impact wrenches.indd 27 2010-02-22 13:29:09

 Pistol Grip Models Non Shut-off

LMS models
l Recommended operating range
7-1800 Nm.
l Fast tightening and disassembly.
l Negligible reaction force.
l Low weight.
l High power-to-weight ratio.
l Tightening time should not exceed 5
seconds, to avoid excess wear on the
tool.
l Soft-start throttle.
l LMS06 – LMS27 are lubrication-free.

Length Air con- Rec. Air

Bolt Square Free excl CS dist- sumption hose inlet
size drive Torque range Max torque Impacts speed Weight anvil ance under load size thread
Model mm in Nm ft lb Nm ft lb per min r/min kg lb mm mm l/s cfm mm in Ordering No.
LMS06 HR10 6-8 3/8 7 - 30 5 - 22 55 40 2100 13500 0.9 2.0 184 20 4 8 6.3 1/4 8434 1060 04
LMS06 HR10-HD 6-8 3/8 7 - 30 5 - 22 55 40 2100 10000 0.9 2.0 184 20 4 8 6.3 1/4 8434 1060 08
LMS06 HR42 6-8 1/4a 7 - 30 5 - 22 55 40 2100 13500 0.9 2.0 184 20 4 8 6.3 1/4 8434 1060 20
LMS06 HR42-HD 6-8 1/4a 7 - 30 5 - 22 55 40 2100 10000 0.9 2.0 184 20 4 8 6.3 1/4 8434 1060 16
LMS17 HR10 10 3/8 10 - 70 7 - 52 110 81 1260 10000 1.7 3.8 141 24 10 21 10.0 3/8 8434 1170 60
LMS17 HR13 10 1/2 10 - 70 7 - 52 110 81 1260 10000 1.7 3.8 141 24 10 21 10.0 3/8 8434 1170 29
LMS27 HR13 12 1/2 30 - 180 22 - 133 220 162 1200 8700 2.1 4.6 142 29 10 21 10.0 3/8 8434 1270 02
LMS27 HR43 12 7/16a 30 - 180 22 - 133 220 162 1200 8700 2.1 4.6 142 29 10 21 10.0 3/8 8434 1270 77
LMS37 HR13 14-16 1/2 40 - 340 30 - 251 480 354 1200 7800 2.7 6.0 165 33 13 27 10.0 3/8 8434 1360 41
LMS37 HR16 14-16 5/8 40 - 340 30 - 251 480 354 1200 7800 2.7 6.0 165 33 13 27 10.0 3/8 8434 1370 01
LMS47 HR20 16-19 3/4 70 - 460 52 - 339 550 405 900 4800 3.5 7.7 170 37 14 30 12.5 3/8 8434 1470 42
LMS57 HR20 18-20 3/4 100 - 500 74 - 369 900 664 960 4500 4.3 9.5 189 38 16 34 12.5 3/8 8434 1570 09
LMS57 HR25 18-22 1 100 - 650 74 - 479 900 664 960 4500 4.3 9.5 189 38 16 34 12.5 3/8 8434 1570 41
LMS61 HR20 20-24 3/4 300 - 1300 220 - 960 1800 1327 900 4000 5.1 11.2 212 44 12 25 12.5 3/8 8434 1611 00
LMS61 HR25 20-24 1 300 - 1300 220 - 960 1800 1327 900 4000 5.1 11.2 212 44 12 25 12.5 3/8 8434 1610 00
LMS61 HRS4 20-24 1 1/4b 300 - 1300 220 - 960 1800 1327 900 4000 5.1 11.2 212 44 12 25 12.5 3/8 8434 1612 00
LMS67 HR25 24-32 1 600 - 1800 440 -1320 2800 2065 600 3000 9.6 21.2 252 55 27 58 16 1/2 8434 1650 06
LMS67 HR S5 24-32 1 5/8a 600 - 1800 440 -1320 2800 2065 600 3000 9.6 21.2 252 55 27 58 16 1/2 8434 1650 10
a
Female hex. quick change chuck.
b
Spline drive No. 4.
Impact Wrenches

28 Pneumatic Assembly Tools

impact wrenches.indd 28 2010-02-22 13:29:10

 Non Shut-off Straight Models

LMS models
l Recommended operating range
7-5000 Nm.
l Fast tightening and disassembly.
l Negligible reaction force.
l Low weight.
l High power-to-weight ratio.
l Soft-start throttle.
l Tightening time should not exceed 5
seconds, to avoid excess wear on the
tool.

Length Air con- Rec. Air

Bolt Square Free excl CS dist- sumption hose inlet
size drive Torque range Max torque Impacts speed Weight anvil ance under load size thread
Model mm in Nm ft lb Nm ft lb per min r/min kg lb mm mm l/s cfm mm in Ordering No.
LMS06 SR10 6-8 3/8 7-30 5-22 55 40 2100 12500 0.9 2.0 182 20 4 8 6.3 1/4 8434 1060 12
LMS67 GIR25 24-32 1 600-1800 440-1320 2800 2065 600 3000 9.4 20.7 339 55 27 58 16 1/2 8434 1650 02
LMS67 GIR S5 24-32 1 5/8a 600-1800 440-1320 2800 2065 600 3000 9.8 21.6 339 55 27 58 16 1/2 8434 1650 14
LMS86 GOR38/B 32-45 1 1/2 1000-5000 737-3688 10000 7375 450 3720 16.4 36.0 376 63 29 61 16.0 1/2 8434 1860 12
LMS86 GIR38/B 32-45 1 1/2 1000-5000 737-3688 10000 7375 450 3720 16.4 36.0 376 63 29 61 16.0 1/2 8434 1860 20
LMS86 GORS5/B 32-45 1 5/8a 1000-5000 737-3688 10000 7375 450 3720 16.4 36.0 376 63 29 61 16.0 1/2 8434 1860 18
LMS86 GIRS5/B 32-45 1 5/8a 1000-5000 737-3688 10000 7375 450 3720 16.4 36.0 376 63 29 61 16.0 1/2 8434 1860 26
a
Spline drive No. 5.
GOR = Outside trigger.
GR/GIR = Inside trigger.

Impact Wrenches

Pneumatic Assembly Tools 29

impact wrenches.indd 29 2010-02-22 13:29:10

 Accessories LMS, LTS

Accessories Included

LTS LMS
Silenced air exhaust through handle Silenced air exhaust through handle
Hose fitting (LMS47/57/61)
Torsion bar No. 06 LTS27 HR43 Hose fitting
Adjusting key LTS17 and LTS27

Optional Accessories

Protective covers

Model Ordering No.

LMS17 4250 1503 00
LMS27 4250 1273 00
LMS37 4250 1213 00
LMS47 4250 1338 00
LMS57 4250 1282 00
LMS61 4250 2464 00
LMS64 4250 0828 00
LTS17 4250 1410 00
LTS27 HR13 4250 1411 00 Protective covers
LTS27 HR43 4250 1340 00
LTS37 4250 1337 00
LTS57 4250 1339 00

Power regulator valve

Model Ordering No.

LMS17/LTS17 4250 1091 90
LMS27/LTS27 4250 1091 91
LMS37/LTS37 4250 1091 92
LMS47 4250 1091 93
LMS57/LTS57 4250 1091 94
LTS17 4250 1091 87 Power regulators
LTS27 4250 1091 86
LTS37 4250 1091 85
LTS57 4250 1091 88

Piped‑away exhaust kit

Model Ordering No. 3m

LMS06 HR 4210 2052 00
LMS17, ‑27, ‑37, ‑47, ‑57, LTS17, ‑27, ‑37, ‑57 4250 1366 90

Exhaust kit

Tool holder with square drive, for 7/16" quick change chuck
Impact Wrenches

Drive size Length

Model in mm Ordering No.
LMS17, ‑27 3/8 75 4023 1210 03
1/2 75 4023 1211 03
Socket holders

30 Pneumatic Assembly Tools

impact wrenches.indd 30 2010-02-22 13:29:12

 LMS, LTS Accessories

Optional Accessories

Suspension yokes
Horizontal Vertical Swivelling
Model Ordering No. Ordering No. Ordering No.
LMS06 HR – – 4210 0243 00
LMS17 – – 4250 1365 00
LMS27 4250 0872 00 4250 1159 00 –
LMS37 4250 0872 00 4250 1058 00 –
LMS47 4250 0872 00 4250 1327 00 –
Swivelling LMS57 4250 0872 00 4250 1160 00 –
LMS61 4250 0872 00 4250 1620 90 –
LMS67 4250 0677 80 – –
LMS86 0371 1102 00 – –
LTS17 – – 4250 1365 00
LTS27 4250 0872 00 – 4250 1365 00
LTS37 4250 0872 00 – 4250 1253 00
LTS57 4250 0872 00 – 4250 2229 00

Extended anvils
Vertical
Drive size Extension
Model in mm Ordering No.
Extended square drive anvil
LMS17 1/2 75 4250 1147 80ab
LMS27 1/2 75 4250 1085 80ab
LMS27 1/2 150 4250 1086 80ab
LMS37/LTS37 1/2 75 4250 1031 80ab
LMS37/LTS37 1/2 150 4250 1032 80ab
LMS37/LTS37 5/8 75 4250 1034 80ab
LMS37/LTS37 5/8 150 4250 1035 80ab
LMS47/LTS47 3/4 75 4250 1208 00
LMS47/LTS47 3/4 150 4250 1209 00
LMS57/LTS57 3/4 75 4250 1109 00
Horizontal LMS57/LTS57 3/4 150 4250 1110 00
LMS57/LTS57 3/4 200 4250 1111 00
LMS57/LTS57 1 75 4250 1113 00
LMS57/LTS57 1 150 4250 1114 00
Spline type anvil
LMS67 1 5/8‑14 – 4250 2473 80
Heavy duty anvil (thru hole)
LMS37/LTS37 1/2 80 4250 1041 01

Quick change chuck

Drive size Extension

Model in mm Ordering No.
Extended anvils Anvil with female hexagon quick change chuck
LMS06 1/4 – 4250 1513 80
LMS17 7/16 – 4250 1154 80
LMS27 7/16 – 4250 1088 80
LMS37 7/16 – 4250 1050 80c

a
Retainer pin – locking type 4250 0851 00 c
NOTE: To be used together with reversing valve
b
Retainer pin – 4250 1345 95 (marked “1”) only.
quick change type 4250 1190 00
Impact Wrenches

Quick change chuck

Pneumatic Assembly Tools 31

impact wrenches.indd 31 2010-02-24 15:36:31

 Accessories LMS, LTS

Torsion bars
Torque
Torsion bar No. Nm Ordering No. Colour of bar
02 60 4250 1230 82 orange
03 75 4250 1230 83 yellow
04 90 4250 1230 84 green
05 100 4250 1230 85 blue
06 115 4250 1230 86 red (standard)
07 125 4250 1230 87 orange
08 140 4250 1230 88 yellow
09 150 4250 1230 89 green
10 165 4250 1230 90 blue

Installation Proposals

Model Max air flow Hose, 5 m Coupling Lubrication Ordering No.

For small impact with 1/4" BSP air inlet
MIDI Optimizer F/RD EQ08-C08 9 l/s Cablair 8 mm ErgoQIC 08 Yes 8202 0850 00
MIDI Optimizer F/R EQ08-C08 9 l/s Cablair 8 mm ErgoQIC 08 No 8202 0850 01
For 1/2" impact wrenches with 3/8" BSP air inlet
MIDI Optimizer F/RD EQ08-C10 16 l/s Cablair 10 mm ErgoQIC 08 Yes 8202 0850 07
For 1/2" impact wrenches with 1/4" BSP air inlet
MIDI Optimizer F/RD EQ08-C10 16 l/s Cablair 10 mm ErgoQIC 08 Yes 8202 0850 03
MIDI Optimizer F/RD EQ10-R10 16 l/s Rubair 10 mm ErgoQIC 10 Yes 8202 0850 16
For impact wrenches with 3/8" BSP air inlet
MIDI Optimizer F/RD EQ10-C13 23 l/s Cablair 13 mm ErgoQIC 10 Yes 8202 0850 02
For impact wrenches with 1/4" BSP air inlet
MIDI Optimizer F/RD EQ10-C13-1/4 23 l/s Cablair 13 mm ErgoQIC 10 Yes 8202 0850 11

Service Kits

The spare parts included in the service

Model Service kit
kits cover a normal overhaul of your tool.
Always have them available for a fast LMS06 4081 0008 90
and economical repair. LMS06 SR 4081 0168 90
LMS17/LTS17 4081 0204 90
Main parts included: LMS27/LTS27 4081 0205 90
Impact Wrenches

LMS37/LTS37 4081 0206 90

l Vane kit Motor bearings
l
LMS47 4081 0207 90
l Gaskets l O‑rings LMS57/LTS57 4081 0208 90
LMS61 4081 0257 90
l Circlips Pins etc.
l
LMS64 4081 0015 90
LMS67 4081 0394 90
LMS86 4081 0016 90

32 Pneumatic Assembly Tools

impact wrenches.indd 32 2010-02-22 13:29:25