NSK makes bearings, and AIMS Industrial lists 8 active NSK products: deep groove ball bearings (shielded and sealed, with and without C3 clearance) and self aligning ball bearings (cylindrical and tapered bore). Each listing covers several sizes, so pick the bore, outside diameter and width you need from the options on the product page. Replacing an existing bearing? Our bearing cross-reference guide explains the part numbers and suffix codes.
What's in the range
| Bearing | What the range includes | Products |
|---|---|---|
| ZZ shielded deep groove ball bearings | Standard clearance, 10 to 30 mm bore: 10 x 26 x 8, 12 x 32 x 10, 17 x 35 x 10, 25 x 42 x 9 and 30 x 47 x 9 mm. C3 clearance, 12 to 55 mm bore: 12 x 32 x 10, 35 x 80 x 21, 45 x 75 x 16 and 55 x 90 x 18 mm. | 2 |
| DDU sealed deep groove ball bearings | Standard clearance: 15 x 35 x 11 and 17 x 35 x 10 mm. C3 clearance: 15 x 35 x 11 and 20 x 47 x 14 mm. | 2 |
| Self aligning ball bearings, cylindrical bore | 55 x 100 x 21 and 100 x 180 x 34 mm, plus the 2218C3 in 90 x 160 x 40 mm with C3 clearance. | 2 |
| Self aligning ball bearings, tapered bore | Standard clearance: 25 x 62 x 17, 60 x 110 x 22 and 100 x 180 x 46 mm. C3 clearance: 95 x 170 x 43 and 110 x 200 x 53 mm. | 2 |
Sizes are bore x outside diameter x width in mm. See deep groove bearings and self aligning bearings for the same bearing types across brands.
Choosing an NSK bearing
Start with the bearing type. A deep groove ball bearing carries radial load and some axial load and is the general-purpose choice for motors, pumps and machinery, and our deep groove ball bearing guide covers sizes and seal options. A self aligning ball bearing has two rows of balls and tolerates some shaft misalignment. Then match the seal (ZZ shielded or DDU sealed), the internal clearance (standard or C3) and, for self aligning bearings, the bore type (cylindrical or tapered) to the bearing you are replacing. Fitting a different clearance class from the original can shorten bearing life, so check the equipment data. For installation and lubrication see the bearing maintenance guide.
Always check the data sheet. Confirm the dimensions, clearance, seal type and any load or speed rating against your application before ordering.
Related ranges
For more bearings see bearings, ball bearings, deep groove bearings and self aligning bearings. Other bearing brands: Koyo, Nachi, SKF, NTN and FYH. To pull a stuck bearing see bearing pullers.
Order from AIMS Industrial
Need a different NSK size or bearing type? Call us on (02) 9773 0122, contact our team or request a quote. We have supplied Australian industry since 1988 and can help match a bearing to the part number on your old one.
NSK bearing FAQs
What NSK bearings does AIMS list?
Deep groove ball bearings with ZZ shields or DDU seals, with and without C3 clearance, and self aligning ball bearings with cylindrical or tapered bores. There are 8 active NSK products, each with several sizes.
What does C3 clearance mean?
C3 is an internal clearance class that is greater than standard. It is chosen to suit the shaft and housing fits and operating temperature, so match the clearance on the bearing you are replacing.
What is the difference between ZZ and DDU?
ZZ means metal shields on both sides. DDU means rubber contact seals on both sides, which keep grease in and contamination out better than shields. Check the product page for the exact type.
When do I need a self aligning ball bearing?
Use one where the shaft may be slightly misaligned or deflect under load, because the two rows of balls on a spherical outer raceway let the bearing tolerate some misalignment. A tapered bore bearing is mounted on a tapered shaft or an adapter sleeve.
Can you supply NSK bearing sizes not listed here?
Call us on (02) 9773 0122 or request a quote with the part number and we will check what we can supply.