NACHI is a Japanese bearing brand, and AIMS Industrial lists 166 NACHI bearings online: deep groove ball bearings, angular contact ball bearings, cylindrical roller bearings, spherical roller bearings, spherical roller thrust bearings, tapered roller bearings and thrust ball bearings. Some listings are a single designation with its own bore, outside diameter and width, while others are range listings with a variant for each size. For a comparison of bearing brands see our bearing brand comparison, and for background on bearing types see the rolling bearings guide.
What's in the range
| Bearing type | Listings | What is listed |
|---|---|---|
| Deep groove ball bearings, open | 14 | 6000, 6200, 6300 and 16000 series designations, normal and C3 clearance, plus range listings from 12 to 150 mm bore. |
| Deep groove ball bearings, open with snap ring | 5 | NR snap ring versions in C3 clearance, for example 6204NRC3 and 6209NRC3. |
| Deep groove ball bearings, sealed | 30 | Double contact sealed (2NS, 2NSE, 2NSL and 2NSE9), normal and C3 clearance, from 10 mm to 120 mm bore. |
| Deep groove ball bearings, sealed with snap ring | 8 | 2NSENRC3 versions such as 6305-2NSENRC3, plus a 12 to 60 mm range listing. |
| Deep groove ball bearings, shielded | 16 | Double shielded (ZZ and ZZE) in normal and C3 clearance, up to 150 mm bore. |
| Deep groove ball bearings, shielded with snap ring | 7 | Z and ZE shielded bearings with snap ring, C3 clearance. |
| Angular contact ball bearings, single row | 7 | 15 degree flush ground (CYDU) and 40 degree (B) contact angles, from 12 to 95 mm bore. |
| Angular contact ball bearings, double row | 7 | Open, double shielded (ZZ) and double sealed (2NS), from 10 to 70 mm bore. |
| Cylindrical roller bearings | 22 | N (2), NJ (7), NU (10) and NUP (3) configurations, including EG high capacity and NUPK tapered bore versions, normal and C3 clearance. |
| Spherical roller bearings | 27 | EXQ and E series with W33 oil holes and groove, straight and 1:12 tapered bore, C3 clearance, from 25 to 240 mm bore across the range listings. |
| Spherical roller thrust bearings | 8 | 293 and 294 series, for example 29320E, 29322EX and 29415EX. |
| Tapered roller bearings | 6 | Metric J series (30200 to 32300), DJ series (30300), and inch cone and cup sets such as LM48548/10 and LM11949/10. |
| Thrust ball bearings | 9 | Single direction 511, 512 and 513 series, and inch Series O. |
That is 166 active listings in total. The counts are listings, not sizes, because a range listing carries many variants.
Choosing a NACHI bearing
Start with the designation on the bearing you are replacing, usually marked on the outer ring face. Match the bore, outside diameter and width first, then the features that follow the designation. On deep groove bearings, ZZ and ZZE mean double shielded, 2NS, 2NSE, 2NSL and 2NSE9 are double contact sealed versions, NR means a snap ring groove with the snap ring fitted, and C3 means internal clearance greater than normal. Sealed bearings suit dusty or wet conditions, while shielded bearings generally run with less drag.
For cylindrical roller bearings, the letters describe the rib arrangement. NU and N types allow the shaft to move axially relative to the housing, so they suit the floating position. NJ locates the shaft in one direction and NUP in both. On spherical roller bearings, choose between straight and tapered bore (the K versions), and check the clearance for the fit and operating temperature.
Always check the data sheet. Confirm dimensions, clearance, speed and load ratings against your application before ordering. If you are replacing another brand, use our bearing cross reference guide as a starting point and call us to confirm the match.
Related ranges
Browse by bearing type: ball bearings, angular contact bearings, cylindrical roller bearings, spherical roller bearings, tapered roller bearings and thrust bearings and washers. Other bearing brands: SKF, NSK, NTN and Koyo. Useful guides: deep groove ball bearing guide, thrust bearing guide, bearing maintenance guide and bearing puller guide.
Order from AIMS Industrial
Need a specific NACHI designation or a match for an existing bearing? Call us on (02) 9773 0122, contact our team or request a quote. We have supplied Australian industry since 1988 and can help with sizing, availability and quantities.
NACHI bearing FAQs
What NACHI bearings does AIMS list?
We list 166 NACHI bearings: deep groove and angular contact ball bearings, cylindrical, spherical and tapered roller bearings, spherical roller thrust bearings and thrust ball bearings. Call us for availability of a specific designation.
What do ZZ, 2NS, NR and C3 mean on a NACHI deep groove bearing?
ZZ and ZZE are double shielded, 2NS, 2NSE, 2NSL and 2NSE9 are double contact sealed, NR is a snap ring groove with a snap ring fitted, and C3 is internal clearance greater than normal. Check the data sheet for the exact seal and clearance on the bearing you need.
What is the difference between N, NJ, NU and NUP cylindrical roller bearings?
The letters describe the ribs on the rings. NU and N types let the shaft move axially, so they suit the floating position. NJ locates the shaft in one direction and NUP in both. Confirm the arrangement against your housing and shaft layout.
Do you have NACHI spherical roller bearings with tapered bore?
Yes. The NACHI spherical roller bearings include straight bore and 1:12 tapered bore versions, with W33 oil holes and groove and C3 clearance. Tapered bore versions carry a K in the designation, for example 22314EXQW33KC3.
Can I replace another brand of bearing with a NACHI bearing?
Bearings with the same basic designation share the same boundary dimensions, but clearance, cage, seal type and speed rating can differ between brands and series. Check these against the data sheet and call us before ordering. Our bearing cross reference guide is a good starting point.
Do you list NACHI inch series bearings?
Yes. There are inch tapered roller bearings such as LM48548/10 and LM11949/10, and inch Series O single direction thrust ball bearings.