Spindle Replacement

Parts List Reference Files Tools Required Torque Chart
Note: Most common screw sizes shown. Always consult manufacturers recommendations.
Screw Size Grade Torque Specs Range
M5 12.9 7.7-10.3 N-m
M6 12.9 13.1-17.6 N-m
M8 12.9 32.1-42.6 N-m
M10 12.9 64-84 N-m
M12 12.9 110-146 N-m
M16 12.9 274-365 N-m
M20 12.9 534-712 N-m
M24 12.9 923-1231 N-m
Tools Required
1. Set of Metric Allen Wrenches
2. Set of Metric Open End Wrenches
3. Set of Metric Sockets
4. Ratchet and Extensions
5. Torque Wrench
6. Lift Assist Device
7. Depth Gauge
8. Lubricating Oil
9. Isopropyl Alcohol
10. Lint Free Rag
11. Fine Stone
12. Spindle Extracting Unit

Step 1: ECPL

Step 2: Position Axis

Step 3: Open Rear Maintenance Door

Step 4: Align Gear Unit to 'locked' position and spindle at 180 degrees (tall drive key at 12 0' clock position)

Step 5: Disconnect Services to Spindle Rear

Step 6: Remove Rotary Coupling

Step 7: Open Work Area Safety Door

Step 8: Remove Collet

"See Procedure:Collet Replacement"

Step 9: Remove Screws and Pins

Step 10: Attach Extractor Unit

Step 11: Pull Spindle Out to First Shim/Last O-Ring

Step 12: Support Spindle With Lifting Device

Step 13: Remove Spindle at 180 degrees (Tall drive key at 12 o' clock position)

Step 14: Remove plug and Set Screw

Step 15: Remove and Check Shims For Damage

Step 16: Insert Rear Ring Into Housing and Front Ring onto Spindle

Step 17: Clean and grease New Spindle

Step 18: Replace O-Rings if Needed With a Layer of Lubrication

Step 19: Check Gear Unit for locked position

Step 20: Use lift Assist and Push Spindle in by Hand to Depth around 70 MM and spindle at 180 degrees.

Step 21: Push Into Place at 180 degrees (Tall drive key at 12 o' clock position)

Step 22: Install Housing Screws

Step 23: Cross Tighten Screws

Step 24: Install plug and Set Screw

Step 25: Return Gear Unit To Unlocked Position

Step 26: Install Rotary Coupling

Step 27: Reconnect Services to Spindle Rear

Step 28: Close Rear Maintenance Door

Step 29: Install Collet

"See Procedure:Collet Replacement"

Step 30: Close Work Area Safety Door

Step 31 : Check Spindle Zero and Clamping Values

Step 32: Activate Lubrication and Run-in

Activate the Lubrication Cycle several times via the HMI - Prepare - Pwr-up Cond. HMI screen. After the lubrication cycles have been completed, it is now necessary to run-in the spindle machining unit. The temperature has to be monitored during the run-in procedure and compared against the supplied temperature readings in the acceptance report. If the measured values are exceeded, stop immediately and allow the unit to cool before attempting to repeat the run-in cycle.

The Spindle Machining Unit should be run-in using the following parameters:


Spindle at 25% 4 minutes
Downtime 2 minutes
Spindle at 50% 4 minutes
Downtime 2 minutes
Spindle at 75% 4 minutes
Downtime 2 minutes
Spindle at 100% 4 minutes

Once completed, the spindle machining unit can now be fully loaded.

Step 33: ECPL