Service Home How To Procedures 40T - Pin Drive Motor - Replacement - VMC - AD0649

40T - Pin Drive Motor - Replacement - VMC - AD0649

10.1 40T Pin Drive Motor - Replacement

Last updated: 12/08/2022

40T - Pin Drive Motor - Replacement - VMC

AD0649

Applies to machines built after August 2016

Introduction

New motors ship with non-contact encoders (NCE's). If you have an early NGC machine you may have a magnetic encoder and will need to order the new cable for the NCE encoder before you make any repairs.

This procedure applies to the following kits:

  • 93-30-11973: SPNDL MTR 40T 12K INLINE PIN DRIVE
  • 93-30-11980B: SPNDL MTR 40T INLINE 15K PIN DRIVE
  • 93-30-11995A: SPINDLE MTR 40T INLINE 15K PIN DRIVE NCE
  • 93-30-12117: SPINDLE MTR 40T INLINE 12K PIN DRIVE NCE
  • 93-30-14460: SPNDL MTR 40T INLINE 18K PIN NCE VF SVC
  • 93-30-12078: SPNDL MTR 40T INLINE 12K PIN DRV
  • 93-30-12078A: SPNDLE MTR 40T INLINK 12K NCE GEN2 EC SVC

Required Tools :

  • T-0066 BELTED DRAWBAR GUIDE TORQUE KIT 

Note : T-0066 is only applicable if a brass cap is found in an in-line spindle during a motor replacement.

 Note : Machine software must be updated to 100.20.000.1110 or later before replacing spindle motor. 

 Note:  This procedure should only be performed by a Haas certified service technician. 

 

Replacement

1

Remove the sheet metal surrounding spindle motor [1].

Remove TSC or air purge assembly [2].

Unplug encoder cable and ground [3].

Remove terminal block cover and disconnect wires from terminal black.

Note: Remove motor mounting screws and rotate motor 90° for easy access to terminal block.

Connect lifting hooks to bracket.

Remove motor.

Note: Make sure transfer tube is still fully seated into spindle drawbar after removing motor.

2

Inspect the spindle visually for a brass cap. If a brass cap is located in the spindle, the spindle will need to removed following VMC - 40-Taper - Inline Pin-Drive Spindle - Replacement procedure and the the brass cap will need to be removed as demonstrated in the next step.

If no brass cap is present proceed with the motor replacement.

Important : The brass caps interferes with current motor motor couplers and it needs to be removed.

3

Note : The brass cap is held in place using thread locking compound.

Place the spindle drive dogs between the vise jaws [2] and clamp securely. Proceed to align T-0066 with the brass cap pin holes [1].

Firmly press downwards on T-0066 [3] and loosen the brass cap [6] using a long breaker bar.

Important : Ensure the vise is clamped onto the spindle drive dogs and the face [5] is sitting flat against the top of the jaws [4].

Proceed to install the spindle back into the head casting and install the new motor.

4

Lift new motor from shipping crate.

Note: Make sure to note the brand of spindle motor you are installing. If you are unsure, see Spindle Motor Brand Identification.

Lightly stone mounting surfaces [1],[2] with alcohol and wipe clean.

Apply Red-I Grease to motor coupling groove [3] and motor coupling pins [4].

Configure HDF

The Hardware Definition File (HDF) allows you to configure your machine to be compatible with multiple spindle brands.

In the event of a spindle motor replacement, a service tech may easily swap out the motor and update the spindle motor brand configuration.

The table below lists the 40T spindle motor service kits that currently require a Hardware Definition File (HDF). If you have recently installed one of these kits, contact your local Haas Factory Outlet to update your spindle motor brand configuration on your machine.

For Service Techs: To update your spindle motor brand configuration:

  1. Log in to the Dealer-only Content (DOC) portal.
  2. Navigate to the Spindle Motor - Brand Configuration - NGC page.

Note: Only Haas Certified Service Technicians can log into this site.

 

 

Kit Number Kit Name Valid Date
93-30-12078 SPNDL MTR 40T INLINE 12K PIN DRV 6/1/2025
93-30-12078A SPNDL MTR 40T INLINE 12K NCE GEN2 EC SVC 6/1/2025
93-30-12117 SPNDL MTR 40T INLINE 12K NCE GEN2 VF SVC 12/1/2024
93-30-12117A SPNDL MTR 40T INLINE 12K NCE GEN2 VF SVC 12/1/2024
93-30-11973 SPNDL MTR 40T 12K INLINE PIN DRIVE 6/1/2025
93-30-14276 SPINDL MTR 40T DC-2 3/1/2025
93-30-14275 SPINDL MTR 40T DC-1 1/1/2025

5

Verify the 3 rubber bushings for the pins are still installed to the spindle coupler and are not crushed [1].

Ensure transfer tube is seated on drawbar [2].

Align pins in motor coupler to holes in spindle coupler and lower slowly with caution.

Lightly rotate spindle nose to help align if necessary.

Once motor is fully lowered and seated, install motor plate screws hand tight.

Re-connect wiring for encoder and terminal block.

Re-install TSC or air purge.

6

To align motor to spindle:

Run spindle at 1000 RPM clockwise/forward for 30 seconds.

Run spindle at 1000 RPM counterclockwise/reverse for 30 seconds.

Run spindle at 1000 RPM clockwise/forward for 1 minute.

Snug mounting screws while motor is running.

Note: When motors stops it will jolt to the side and misalign if not snugged down.

Note: The Octavis Vibration Analyzer can be used when aligning motor to find where vibration displacement spike is the smallest.

Torque screws per Haas Torque Specifications.

Run the mill spindle vibration test per Mill - Spindle Vibration - Tolerances.

Re-install the sheet metal assembly.