At a glance
SKF
Start with the exact SKF designation, including seal, cage, clearance and precision suffixes.
Select when the verified SKF record meets the required ratings, installation dimensions and operating conditions.
NSK
Start with the exact NSK designation and decode its suffixes within the NSK system.
Select when the verified NSK record meets the same duty and a complete replacement check passes.
Key differences
Typical design distinctions. The complete designation and current product specification take precedence.
Swipe the table horizontally to see both options →
| What to compare | SKF | NSK |
|---|---|---|
| Basic model | Match bore, outside diameter and width | Match the same boundary dimensions |
| Sealing example | 2Z, 2RS1 or 2RSH in applicable families | ZZ, DDU or VV in applicable families |
| Clearance | Check the exact normal/C3/etc. definition | Check the exact normal/C3/etc. definition |
| Precision | Read the stated tolerance class | Read the stated tolerance class |
| Performance | Compare C, C0, speed and grease | Use the same units and rating basis |
| Evidence | Exact catalogue record | Exact catalogue record; missing data stays unknown |
Before you choose
- A seal-code crosswalk does not prove the same lip contact or grease.
- Compare model variants before drawing any brand-level conclusion.
- Search coverage shown below is the data currently loaded here, not each manufacturer's complete range.
Check the actual model
Search a full designation, inspect its technical data, then compare candidate records. Similar names or dimensions do not guarantee interchangeability.
Coverage is the current BearingScope dataset, not a manufacturer's complete range. Missing fields and missing brands are not treated as equivalent.
Filters show recorded catalogue attributes. Open each candidate to confirm its exact specification.
A few things worth clarifying
Which brand is better?
This site does not assign a blanket ranking. A suitable choice depends on the exact bearing and the application.
Can I replace 6205-2Z with 6205ZZ?
Those may identify a comparable size and shield arrangement, but verify clearance, accuracy, speed, grease and dimensions first.
Reference basis & limits
- SKF — Bearing maintenance handbook: designation suffixes
- NSK — Bearing Designation Systems, March 2024
Independent explanatory content; not a manufacturer endorsement or approval of a replacement. Verify current product data, fits, lubrication and operating conditions before applying a comparison.