HF-Spindle Eco 80 VA38

OPERATOR MANUAL
Eco 80 VA38 English
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CONTENTS

General Information 4

Technical Description 5

Technical Data 6

Spindle Dimensions 7

Performance Graphics 8

Installation 9

Collet change 11

Pin Arrangement 12

Run-in-recommendation 13

Safety Instructions 14

Cutting tool selection failure 15

Maintenance 15

Problems and causes 16

Transport and storage regulations 16

Limited Warranty 17

Information EC-Directive 18

CE Declaration of Conformity 19

Eco 80 VA38 English

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GENERAL INFORMATION

Thank you very much for your decision to buy our product. IMT installations and systems
are the result of many years of experience in the area of high-speed spindles and related
accessory components. Our continuous research and development work give you the
guarantee that you are working with state-of-the art products – now and in future.
However, before operating the spindle you should read these instructions carefully in
order to avoid mistakes and to ensure safe operation.

We would like to draw particular attention to the chapter

"Safety instructions".
The company has to ensure that only trained operators
thoroughly familiar with the spindle may operate the unit.
Failure to do so may cause damage to machines and harm
to persons and may invalidate any entitlement to damages.

As we always want to maintain the highest technical standards of our systems and
installations we reserve the right to carry out modifications and deviations from this
manual.

No part of this operating manual may be translated or reproduced in any manner

whatsoever without written permission of IMT GmbH.

Art.-Nr.: 50113101 - Version 3

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TECHNICAL DESCRIPTION

IMT GmbH’s high frequency spindles are permanently greased with ABEC9 hybrid
bearings. To operate these spindles properly, a suitable, quality frequency converter is
needed.

IMT GmbH’s spindles are available with either electrical connectors for the operation of
the spindle or a hard-wired version to splice into a junction box.

If a connecting cable is used other then the one provided by IMT GmbH, it is important
to use high quality shielded cable only to avoid static that may interfere with the spindle
and tool change functions.
PTC thermistors are installed in the stator to monitor the maximum allowable
temperature. A matching refrigeration unit is required to operate this spindle.

A compressed air connection is needed for tool change and air seal. To prevent entry
of dirt particles and a smooth operation of the tool change, the recommended air
pressure (see technical data) must be met. The air has to be dry and free of oil at any
time.

The coolant unit must maintain the temperature of the coolant at about 20 degrees
Celsius at all times. Pressure of the coolant unit should not exceed 3 bar (43.51 psi).

The adjustable nozzles for the oil/air coolant mist may eject an oil mist through them or
opt for air only. An oil mist lubrication unit is available as an option and is
recommended. The pressure should not exceed 6 bar (87.02 psi).

ATTENTION:
Never change tool while spindle is rotating. This will damage the spindle.

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TECHNICAL DATA

Diameter 62 / 80 x 80 mm
Speed max. up to 40.000 rpm
Power Output max. 5.8 kW
Power Output S1 100% 2.5 kW
Power Output S6 40 % 3.1 kW
Motor type asynchronous, 3 phases
Number of poles 2
Voltage 168 Volts
Current S1 100% 11.5 Ampere
Current S6 40% 14.0 Ampere
Current max. 18.0 Ampere
Frequency up to 667 Hz
Ball bearing hybrid-ceramic
Lubrication Grease packed
Spindle Cooling Liquid
Cooling Flow min. 1.5 L/min
Air purge 1.0 – 2.0 bar, ca. 80 l/min
Tool change 5.0 – 8.0 bar
Taper blow out 1.0 - 2.0 bar
Speed control -
Temperature control PTC
Air nozzle 2
Tool Interface HSK-E25
Clamping range up to 10 mm
Electrical connection Plug 9 pin
Electrical connection tool control Plug 12 pin
Tool change indication clamp / unclamp
2 x PNP
Weight approx. 5.1 kg

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SPINDLE DIMENSIONS

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PERFORMANCE CURVE AND PEAK POWER CURVE

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INSTALLATION
1.
Check if system is complete!

2.

Air pressure connections:

Nr. Connection Pressure Ø
5 Air seal 1 - 2 bar 6 mm
6 Taper air purge 1 - 2 bar 6 mm
8 Air/Water nozzle 1 - 2 bar 6 mm
11 Tool change 5 - 8 bar 6 mm

All air pressure connections and all incoming air to the

spindle needs to be dry and free of oil.

Please be aware that the longer the hose the bigger the
pressure loss at the spindle.

Coolant connections:
Nr. Connection Ø
10 2 x Coolant 2 x 8 mm

Plug connections:

Nr. Connection Number of Pin´s

1 Power plug 9 -pin
2 ATC control 12 -pin

The cylinders ventilation hole must never be closed or

pasted over.

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3.

Test the tool change function. Activate pressure to the

tool change system. Upon activation the movement of
the drawbar pin, X should be about 10.3 mm ±0,2
mm. Prior to inserting a tool holder make sure spindle
taper is clean.

BEWARE:
Never put spindle into operations while tool change
system is under pressure. This will damage the spindle
or can lead to irreparable damages to the spindle.

Now insert the correct tool holder. The air gap Y

between tool holder and shaft should be about 0.5 mm
(0.02”). Deactivate the pressure to the tool change
system (clamp tool) and the tool holder will be inserted
completely in the taper. All tool changes have to be
performed in continues axial movement. Once the air
gap (2) is gone the clamping motion is completed.

Tools can only be changed in an axial direction. The

applied force to an automatic tool change system should
not exceed 50 N.

4.

The spindle is ready for operations now.

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 COLLET CHANGE

MAKE SURE COLLET AND COLLET CHUCK ARE CLEAN WHEN CHANGING
COLLETS. DIRT AFFECTS THE CLAMPING FORCE AND ACCURACY OF THE COLLET

Insert collet

The collet has to be inserted straight into the clamping

nut. Push collet and clamping nut together until collet
snaps in completely. A correctly inserted collet will turn
in the clamping nut shoulder and will not fall out of the
nut when turned over.

Remove Collet

Hold clamping nut as shown and push against the

collet. The collet will snap out of the clamping nut
shoulder.

To clamp collet always use the correct spanner wrench. Always clamp collet with a tool
inserted.

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PIN ARRANGEMENT

PLUG 9-PIN
Pin
1 : Motor phase U
2 : Motor phase V
3 : Motor phase W
4 : Protected Ground
A : -
B : -
C : PTC
D : PTC
E : -

ELECTRICAL PLUG FOR TOOL CHANGE CONTROL 12-PIN

Pin
1 : +10...30 VDC
2 : -
3 : Tool unclamped
4 : Tool clamped
5 : -
6 : -
7 : Ground
8 : -
9 : -
10 : -
11 : -
12 : -

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RUN-IN-RECOMMENDATION

Please make sure that the spindle is always equipped with a toolholder without tool or
for spindles with direct shaft clamping a collet with tool at every run-in-period.

Run-in-period for spindles which have not been operated between 6 and 60
hours.

Run-in-period for new spindles, repaired spindles and spindles which

have not been operated between 60 hours and 14 days.

Run-in-period for spindles which have not been operated during the last
14 days.

Note that the service life of the lubricant in the ball bearings begins to reduce after
six months of storage.
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SAFETY INSTRUCTIONS

IMT GmbH’s spindles are designed and developed according to state-of-the-art knowledge
in technique and safety for spindle manufacturing. However, serious personal injury and
damage to machinery can result with improper use, incorrect operation, or failure to
adhere to maintenance procedures. Please note the following:

- The initial run off and installation should be done by qualified, trained personal
in accordance with the information in this manual.

- Prior to any use, the machine operator should ensure that the spindle is in good
working condition.

- Get familiar with the tool change function of the spindle. Only use tooling that
was designed for the spindle.

- Keep the spindle manual close to the machine operator

Only work on spindle and machinery with the power and circuits turned off

In general, repairs should only be carried out by qualified specialists with proper
equipment.

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CUTTING TOOL SELECTION FAILURE
The dynamic balancing of tools at its nominal speeds must be below 2,5mm/s
(Resonance speed - velocity effective) according to Din ISO 10816-16.
With longer projected tool length the Spindle speeds must be reduced.

The following directions need to be followed when selecting the correct

cutting tool:

• always use tools with the optimum effective geometry and follow the recommended
clamping procedures for the selected holder. Clamp tool correctly into tool holder as
instructed.

• never use deformed, damaged, incomplete, or not perfectly balanced tooling

• prior to inserting the tool into collet, assure that all surfaces are free of dents and
completely clean (no oil residue on shank)

• never exceed the manufacturer’s suggested maximum speed of the cutting tool

• essential requirements for the use of high-speed cutting tools are

− a compact, short, and light cutting tool

MAINTENANCE
Daily

- Clean the front part of the spindle, do not use compressed air.

- Check the shaft for dirt, if necessary uses a cleaning Taper.

- Check air supply

- Check the spindle cooling

- Check the air purge on the spindle shaft

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PROBLEMS AND CAUSES

Problem Cause Solution

Spindle no turn Check the voltage supply Corresponding measures
for frequency converter seize
Spindle cable not Spindle connecting and
connecting checking the cable
Spindle high temperature Spindle to hot Reducing spindle charges
Cooling system turned off Cooling system turn on
The shaft are turn heavy Compressed air from the Depressurize air connection
tool change cannot escape of tool change
Bearing faulty Change the shaft unit

TRANSPORT AND STORAGE REGULATIONS

For spindle protection it has always to be transported in the original spindle
packaging. If spindle is transported in improper packaging warranty claim for repair
work will expire.

Cooling circuit of water-cooled spindles has to be completely emptied before transport

or storage.

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LIMITED WARRANTY

With exclusion of any further claims, the warranty for material, assembling and
construction faults is twenty-five months from date of delivery. Excluded are wear parts.
For these the warranty is six months from date of delivery. For bearings it is 6 month or
1500 operating hours.

Within the framework of this warranty, we commit ourselves to repair or replace any
parts free of charge that we have checked and found to be faulty and which have not
been damaged due to improper handling.

Any faults and defects must be communicated to us immediately and in writing. During
the warranty period the buyer must ensure that the unit will be delivered back to our
premises free of charge. All warranties will be void in case of non-observance of this or
in any case of servicing of IMT-installations by unauthorized personnel.

Warranty is limited to the repair or replacement of faulty parts. We accept no liability or

compensation claims for damage resulting directly or indirectly from faulty products
delivered by us.

We reserve the right to carry out repairs or replacements in a way that corresponds to
the latest developments in technology.

For every other information please refer to our general terms of business.

Stolzenmorgen 27, D-35394 Giessen

Tel. +49 641 96 10 34 - 0 Fax. +49 641 96 10 34 - 50
sales@imt.de http://www.imt.de

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INFORMATION EC-DIRECTIVE

IMT Gesellschaft für industrielle Maschinentechnologie mbH

Would like to inform that the legislation of the above directive is applied in all member
states as of 29.12.2009. Therefore, the requirements of this directive are legally
binding.

IMT HF-Spindles for customers that apply to this directives’ validity area, will be placed
in the market as a “partly completed machinery”.

It must not be put into operation until the machine in which the partly completed
machinery is installed complies with the requirements of the directive 2006/42/EC or
any other required directive.

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CE DECLARATION OF CONFORMITY

IMT Gesellschaft für industrielle Maschinentechnologie mbH

declares that the product

HF-Spindle Eco 80 VA38

in its standard design complies with the following relevant EC-directives:

Low-voltage directive 2006/95/EG

EMV directive 2014/30/EU

Martin Erb Stanislav Skorbjaschenskij

Managing Director Chief Designer

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