Large Spindle

CNC Machining of a Steel Casting Spindle for the Large Mining Vehicle Industry

Large Spindle Example









Large Spindle Capabilities
Product Description Front axle of a large mining truck

Capabilities Applied/Processes

CAM Programming
In-House Fixture Development
CNC Vertical Turning
      • Large Tapper Boring
CNC Horizontal Turning
CNC Horizontal Boring Mill
      • Milling, Drilling, Tapping


Equipment Used to Manufacture Part

130 Horizontal Boring Mill
2.5 Meter Vertical Turning Machine

Overall Part Dimensions

1300mm (47 inch) Diameter
3000 lbs. Finished Weight
560 lbs. of Material Removal

Tightest Tolerances

± 0.013mm (.0005 inch) Diameter
0.05mm (0.002 inch) Total Indicated Run-out

Material Used

Steel Casting

Material Finish

Surface Finish RA 62

In process testing/inspection performed

On-machine inspection with gages or Faro Arm.

CMM Inspection

Industry for Use

Large Mining Vehicle


10-50 Piece Batches

Delivery/Turnaround Time

20 Day Lead Time

Standards Met

Customer Specifications
2D CAD Drawing
Customer Required Control Plan (SPC)
Geometric Dimensioning Tolerance

Project Challenges

This spindle component is large and requires high precision taper boring.