Service Home How To Procedures H-5AX HSKA63 Dual-Support - Crashed Spindle Head Correction
Last updated: 05/04/2026

H-5AX HSKA63 Dual-Support - Crashed Spindle Head Correction

Revision B - 03/2026

Introduction

This procedure show how to correct the Spindle Head after a crash on VR/GM H-5AX HSKA63 Dual-Support machines. 

 Note: The VR Double Yoke machine is shown for illustrative purposes. 

Tools Required:

Fill out the checklist below and attach it to the work order.

H-5AX HSKA63 Dual-Support Spindle Head Crash Checklist

Spindle Cartridge Checks

1

Assemble the drawbar force gauge according to the manufacturer’s instructions. Put the gauge into the spindle.

  • Take the Setup and CAREFULLY place it into the spindle.
  • Grab the tool from the Adapter Diameter, beware of pinch points.
  • Read the force on the Gauge, the following are force readings allowable:

HSK-A63: 2832 - 5170 lbf (12.6-23 kN)

2

Check for Spindle Chiller fluid [1], coolant, or air leaking from side plate.

Check the Spindle cartridge [2] is flush with the side plate [3]. 

 Warning: The machine should be stopped and powered off immediately if signs of coolant or chiller fluid is seen leaking from between the spindle and spindle mount plate.

The spindle head needs to be replaced. See H-5AX Double Yoke Spindle Head - Replacement - AD0743 for part number and how to replace the spindle head.

Complete an Inspection Report

Complete the machine geometry sections and the C-Axis Parallel to Z-Axis check of the latest inspection report before setting the B and C-Axis Tool Changer Offsets. After the Tool Changer Offsets are set, finish the remaining checks on the inspection report.

The latest inspection report can be found on EA - Alignment Inspection Report - Reference Table through the Dealer-Only Content page.

 Note: This site is available only to Haas Service Techs.

Please refer to the H-5AX Double Yoke Spindle Head - Geometry Guide for further details on how to perform the 5AX inspection report checks.       

 WARNING: This page may be used as reference for the inspection report but do not make any adjustments before consulting with Haas Service. Adjustments made without consulting Haas Service will void warranty.     

B-Axis Tool Change Offset

1

Home the B & C-Axis.

Load the test arbor into the spindle. Place the indicator on the side face of the test arbor.

Find the high spot on the test bar by jogging the Y-Axis. Once the indicator is on the high spot jog the indicator up and down the test bar and adjust the B-Axis so that the error on the indicator is no more than 0.0001".

2

Use the following instructions to change the B-Axis Tool Change Offset if a service key is not available. 

Press [SETTING] and navigate to the rotary tab. Highlight the 4th axis selection [1] and press [ALTER] [2] to set the B-Axis Tool Change Offset [3].

After adjusting the B-Axis Tool Change Offset. Redo the inclination test, sweeping from position [1] to [2]. If the inclination is out of tolerance after adjusting the offset, redo the adjustment portion. 

3

If a service key is available press [DIAGNOSTIC] and navigate to the parameters tab and to the factory tab. Find Parameter 6.078 B-AXIS TOOL CHANGE OFFSET to set the Tool Change Offset by pressing the [B] + [F2] to set the offset to the current position.

After adjusting the Tool Change Offset. Redo the inclination test, sweeping from position [1] to [2]. If the inclination is out of tolerance after adjusting the offset, redo the adjustment portion. 

C-Axis Tool Change Offset

1

Home the B and C-Axis.

In MDI command the B-Axis to -90°.

Load the test arbor into the spindle. Place an indicator on the front face of the test bar at the end of the bar [1] on the high spot. Zero the indicator at this location.

Jog the Z-Axis up so the test bar clears the table and command B = +90°. Jog the table in the Z and X direction to move the indicator to position [2] on the front face of the test bar at the end of the bar on the high spot. Adjust the C-Axis so that the error on the indicator is the same between positions [1] and [2]. This should not exceed 0.0005".

Once the end of the test bar reads the same error at both B = -90 and B = +90 degrees set the C-Axis Tool Change Offset. See steps below.

 Note: Do not move the Y-Axis during this step.

 Important: If the C-Axis Tool Change Offset is changed, the spindle orientation must be verified before doing a tool change. 

2

Use the following instructions to change the C-Axis Tool Change Offset if a service key is not available. 

Press [SETTING] and navigate to the rotary tab. Highlight the 5th axis selection [1] and press [ALTER] to set the C-Axis Tool Change Offset [3].

After adjusting the Tool Change Offset. Redo the inclination test, sweeping from position [1] to [2]. If the inclination is out of tolerance after adjusting the offset, redo the adjustment portion. 

3

If a service key is available press [DIAGNOSTIC] and navigate to the parameters tab and to the factory tab. Find Parameter 7.078 C-AXIS TOOL CHANGE OFFSET to set the tool change offset by pressing [C] + [F2] to set the offset to the current position.

After adjusting the Tool Change Offset. Redo the inclination test, sweeping from position [1] to [2]. If the inclination is out of tolerance after adjusting the offset, redo the adjustment portion. 

Complete an Inspection Report

Complete the H-5AX section of the latest inspection report.

  Note: MRZP will be completed after the compensations are calculated and the probe is calibrated later in the procedure. 

B and C-Axis Compensation

Verify the B and C-Axis Tool Change positions are repeating.

Calculate the compensation values of B=+90, B=-90, C=+90, C=+180, and C=-90 by following the step in the H-5AX - VR DOUBLE YOKE - HDC - B/C-AXIS COMPENSATION procedure.

Take a back up after populating the compensation values and attach it to the machine history.

Tool Changer Alignment

 

Verify Tool Changer is aligned.

Adjust the Z Tool Change Offset or Spindle orientation if needed.

Set the Z Tool Change Offset by following the steps in the Side-Mount Tool Changer - Z-Axis Tool Change Offset – NGC procedure.

Set the Spindle orientation by following the steps in the Side-Mount Tool Changer - HSK - Spindle Orientation Offset – NGC procedure.

Calibrate Probe

Calibrate the probe by following the steps in the WIPS - Probe Calibration - NGC procedure.

MRZP & Safe Zone Calibration

Calibrate MRZP and Safe Zone.

Note: Software 100.24.000.1000 combines the MRZP and Safe Zone into one program.

  Important: The spindle probe must be calibrated before doing this procedure. This makes sure the accuracy of the probe to the machine position is correct. Refer to the Next Generation Control - Probe Calibration (VPS) procedure.

Test Cut

Complete the H-5AX test cut procedure.

Adjust the MRZP values as needed.

Verification

Run the customers part to see how the machine performs.