608 2RS vs 608 ZZ: compare the full bearing specification
608 is a useful size example, not a universal recommendation. Compare the loaded 608 variants by closure, precision, clearance and lubrication.
On this page5 sections ⌄
What to check
Start from the measured envelope
Use the recorded 8×22×7 mm variants as candidates only when those dimensions fit the application. Keep extended or special variants separate.
Read more than the suffix
Inspect the original sealing field and recorded load and speed ratings. A sealed design may use different grease or internal clearance from the shielded version.
Choose exact products to compare
The linked searches retain 608 and the closure filter. Select the exact branded variants in the results for a full custom comparison.
Recorded catalogue candidates
First 12 records. Open all results to filter brands and technical attributes. These are search candidates, not approved replacements.
| Brand / complete designation | Type | d×D×B (mm) | Closure | Original precision | Clearance |
|---|---|---|---|---|---|
| SKF608 | Deep groove ball bearing | 8×22×7 | Without | P6 and tighter width tolerance | CN |
| KOYO608 | Deep groove ball bearing | 8×22×7 | Open | Not reported | Not reported |
| NTN608 | Deep groove ball bearing | 8×22×7 | open | Not reported | CN |
| NSK608 | Deep groove ball bearing | 8×22×7 | Open | Not reported | Not reported |
| EZO608 | Deep groove ball bearing | 8×22×7 | Open (no closure suffix in this catalogue marking) | Not reported | Not reported |
| KOYO608 2RD | Deep groove ball bearing | 8×22×7 | Extremely light contact sealed 2RD | Not reported | Not reported |
| KOYO608 2RS | Deep groove ball bearing | 8×22×7 | Contact sealed 2RS | Not reported | Not reported |
| EZO608 2RS | Deep groove ball bearing | 8×22×7 | Two contact rubber seals | Not reported | Not reported |
| SKF608-2RSH | Deep groove ball bearing with seals | 8×22×7 | Seal on both sides | P6 and tighter width tolerance | CN |
| SKF608-2RSH/C3 | Deep groove ball bearing with seals | 8×22×7 | Seal on both sides | Not reported | C3 |
| SKF608-2RSH/C3GJN | Deep groove ball bearing with seals | 8×22×7 | Seal on both sides | Not reported | C3 |
| SKF608-2RSH/GJN | Deep groove ball bearing with seals | 8×22×7 | Seal on both sides | Not reported | CN |
— = not recorded. Width conventions differ for tapered assemblies, thrust bearings and mounted units. Always inspect the dimensional drawing.
Filter all 53 records →Continue with real catalogue data
Preserve the full model, source description and unknown fields when making your shortlist. This reference website does not sell bearings or certify a replacement.
Related questions and tools
Bearing seal code chart: RS, 2RS, Z, ZZ, LLB & LLU
Use closure families to narrow the catalogue, then read the brand-specific specification. Similar-looking codes are not a universal suffix interchange table.
Read and apply →Sealed versus open bearings: lubrication & protection
An open bearing relies on its surroundings for contamination control and lubricant supply. An integral closure changes that arrangement but does not make every bearing waterproof.
Read and apply →Contact versus non-contact bearing seals
A seal may touch a ring or operate with a small gap. Compare the actual design rather than assuming all rubber-looking closures have the same friction or protection.
Read and apply →Reference basis & data limits
Manufacturer terminology is retained in the product records. Technical reference basis: JTEKT Basic Bearing Knowledge (boundary dimensions, tolerance classes and lubrication); NSK Bearing ABCs (lubrication, designations and clearance); NTN technical FAQs (closure codes and component interchange); SKF rolling-bearing selection and maintenance references.
Selection workflows and catalogue grouping are BearingScope editorial aids. Verify the current drawing and application requirements before using a candidate. Missing database information is not converted into an assumed match.