Feed Mechanisms Company Technical Library

NSK Bearing Guides: Identification, Spindle Set Matching and Feed Axis Repair

Engineering notes for buyers replacing NSK precision bearings. Read the complete part number with seal, clearance and accuracy class. Match spindle sets and preload arrangements. Specify ball screw support bearings for CNC feed axes by bearing position, not by bore size alone.

Super-precision angular contact
Cylindrical roller bearings
Ball screw support bearings
Machine tool rebuild

Precision spindle bearings laid out on a workbench in a machine tool repair shop

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Practical guidance on NSK part numbers, matched sets and replacement assemblies for spindles, feed mechanisms and industrial equipment.

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Send us your repair list. We check every complete part number.

List the machine model, full NSK suffix, bearing position (drive end or non-drive end) and quantity per line. Genuine NSK bearings in original packaging, with documentation.

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WhatsApp: +86 152 691 88020
Email: info@jpnsk.com

Part number worn off? Send a photo.

When a spindle fails and the repair list is incomplete, a clear photo of the markings on the old bearing helps us confirm the correct NSK precision reference.

Shoot the ring face and side markings in good light
Note the bearing position and machine model
Include set arrangement for matched spindle bearings

Send Bearing Photos