Haas ST Series - User Manual

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C-Axis - Engagement Offset - Lathe - NGC
NGC Lathe - C- Axis Engagement Offset
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C-Axis - Engagement Offset - ST 15-30 - Lathe - NGC
Page 1 of 6 pages

Summary

C-Axis Disc Runout Check and Adjustment

Adjust Hydraulic Union Runout

Ensure hydraulic union runout is less than 0.001" TIR by tapping with a soft mallet.

Adjust C-Axis Disc Runout

Measure C-axis disc runout using a drill bit as an indicator point, adjust with mallet.

Set C-axis Engagement Offset Procedure

Loosen C-axis Mount Bolts

Loosen C-axis mount bolts and adjust screw to move mount away from disc.

Configure Service Mode and Zero Return

Enter service mode, set parameters like shutoff time, and zero return the C-axis.

Mesh C-axis Drive Gears

Mesh the C-axis drive gear with the disc gear by turning the adjuster screw.

Set Spindle Orientation Offset

Set the Spindle Orient Offset parameter via diagnostic settings.

Engage C-axis and Torque Mount Bolts

Disengage and re-engage C-axis, then torque mounting bolts to 50 ft lbs.

Measure C-axis Runout

Use a dial indicator to check runout of the motor mount and cylinder block.

Re-set Spindle Orient Offset and Verify

Re-set Spindle Orient Offset and verify C-axis actual position is within spec.

Final C-axis Engagement Test

Adjust shutoff time and run test program to verify C-axis engagement.

Haas ST Series Specifications

General

Machine Weight	Varies by model
Max Turning Diameter	406 mm
Max Turning Length	1016 mm
Spindle Bore	76 mm
Motor Power	30 kW
Rapid Traverse Rate (X/Z)	30.5 m/min