Deep Groove Ball Bearings — 6000, 6200 & 6300 Series

Deep groove ball bearings are the most universally used bearing type — versatile, compact, and suitable for high speed with moderate radial and axial load. AIMS Industrial stocks deep groove ball bearings from NACHI, Koyo, NSK, and NTN — 6000 (extra-light), 6200 (light), and 6300 (medium) series in open, 2Z (shielded), and 2RS (sealed) variants across the most common industrial bore sizes.

Deep Groove Bearings We Stock

6000 Series (Extra-Light, 10–30mm Bore)

6000 series deep groove bearings for small motors, power tools, and instrumentation — providing a compact, lightweight bearing with high speed capability in a small envelope. NACHI and Koyo 6000 series are stocked in open and 2RS sealed variants.

6200 Series (Light, 10–110mm Bore)

6200 series is the most widely stocked metric ball bearing series — covering the most common bore sizes for electric motors (IEC frame sizes), centrifugal pumps, conveyors, and general industrial equipment. NACHI and Koyo 6200 series bearings are the benchmark for motor and pump maintenance replacement.

6300 Series (Medium, 10–115mm Bore)

6300 series provides a wider, heavier bearing than 6200 for higher radial loads in the same bore size — used where 6200 life rating is insufficient for the application load. NACHI and Koyo 6300 series are stocked for industrial equipment with heavier shaft loads.

NSK & NTN Deep Groove Ball Bearings

NSK and NTN deep groove bearings are available across selected 6200 series sizes for direct-replacement applications where the OEM bearing is an NSK or NTN. Both brands meet the same ISO dimensional and tolerance standards.

Deep Groove Bearing Selection Guide

Matching Bearing to Motor Frame

IEC-frame electric motor bearing sizes are standardised — confirm the frame size and bearing position (DE/NDE) from the motor nameplate to identify the correct replacement bearing. NACHI and Koyo cross-reference tables map IEC motor frames to the required bearing series and sizes.

Sealed vs Shielded for Motor Replacement

Most modern electric motors use 2RS sealed bearings — pre-packed with grease for the design service life. Shielded 2Z bearings are used in older motors with grease nipple relubrication. Confirm the original bearing designation before replacement.

Clearance (C3 for Press Fits)

Electric motors with interference-fit outer rings require C3 (larger than normal) internal clearance — the press fit reduces internal clearance to the design operating value. Using CN (normal) clearance bearings in press-fit applications results in over-tight clearance and reduced bearing life.

Expert Support: Contact our team or request a quote — we’ll help size and specify the right valve for your pipeline and fluid handling requirements.

As a proudly Australian business since 1988, we stock locally and work with trusted distributors to ensure fast, reliable supply.

See our full bearings range including ball bearings, angular contact bearings, and bearing housings.