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40420

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Headstock Class 3 Bearing

We do not recommend customers attempt to replace the headstock bearings themselves. Proper bearing installation requires the use of specialized fixtures to ensure perfect spindle and bearing alignment.

If you are unable to press the bearings in yourself, you may return your headstock to our facility for professional replacement. Please contact our customer service department at kim@sherline.com to obtain an RMA number before sending your headstock in for service.
Note: Service fees apply.

Learn more about our specialized tools and procedures for setting the headstock bearing preload:
PDF: Replacing Headstock Bearings
Video: Setting the Headstock Bearing Preload

If you can press the bearings in yourself, you can order them below.

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SKU: 40420 Category:
Bore Type Round
Bore Diameter 0.787 Inch | 20 mm
Outside Diameter 1.654 Inch | 42 mm
Overall Height/Width
 0.472 Inch | 12 mm
Contact Angle
 0°
Bearing Type Tapered Roller Bearing
Enclosure Type Metal Shielded
Internal Clearance  C3
Material Steel
Max Dynamic Radial Load (with 90% reliability) 9.4kN (2,113 lbf pound-force)
Max Static Radial Load 5kN (1,124 lbf pound-force)
Max Dynamic Axial Load 3.3kN (741 lbf pound-force)
Max Static Axial Load 2.5kN (562 lbf pound-force)

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