Thrust Bearing

A Nachi thrust ball bearing is a high-quality bearing specifically designed to handle axial loads (loads parallel to the shaft) rather than radial loads. Here's a quick breakdown for better understanding:

• A thrust ball bearing supports axial forces only — not radial (side-to-side) forces.

• It consists of:

  • Two washers (raceways): one attached to the shaft, one to the housing

  • Ball bearings between them

  • Usually includes a cage to keep balls evenly spaced

• Brand: Nachi-Fujikoshi Corp. – a trusted Japanese manufacturer known for precision and durability

• Design: Available in single-direction and double-direction

  • Single-direction: Handles axial loads in one direction

  • Double-direction: Handles axial loads in both directions

• High Precision: Suited for machine tools and other precision applications

• Material: Typically high-carbon chromium steel for strength and wear resistance

Some popular Nachi thrust ball bearing series:

• 511 series – standard single-direction

• 512, 513, 514 series – for larger loads

• 522, 523, 524 series – double-direction variants

• Automotive clutches

• Machine tool spindles

• Lifting jacks

• Pumps

• Gearboxes

• High load capacity

• Smooth rotation and minimal friction

• Excellent quality control (Japanese manufacturing standards)