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.
On this page5 sections ⌄
What to check
One side versus both sides
RS and Z commonly describe one sealed or shielded side; 2RS and ZZ / 2Z commonly describe both sides. Construction and suffix rules still depend on manufacturer and series.
Contact is a separate question
NTN identifies LB as non-contact and LU as contact. Do not translate every non-contact seal into a metal shield; the sealing mechanism and material are separate attributes.
Search the recorded description
Our sealed group includes different documented seal designs. It is deliberately not labelled an exact 2RS equivalence group. Product pages retain the original closure text.
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 |
|---|---|---|---|---|---|
| FAG16003-A-2RSR | Deep groove ball bearing | 17×35×8 | 2RSR — Contact seal on both sides | PN — Normal (ISO 492:2023) | CN (Group N) — Normal internal clearance |
| FAG16003-A-2RSR-C3 | Deep groove ball bearing | 17×35×8 | 2RSR — Contact seal on both sides | PN — Normal (ISO 492:2023) | C3 (Group 3) — Internal clearance larger than CN |
| SKF16101-2RS1 | Deep groove ball bearing with seals or shields | 12×30×8 | Seal on both sides | Normal | CN |
| TIMKEN1641H-2RS/F | Deep groove ball bearing | 25.4×50.8×14.288 | Sealed | Not reported | Not reported |
| TIMKEN1641H-2RS/FVSL531 | Deep groove ball bearing | 25.4×50.8×14.288 | Sealed | Not reported | Not reported |
| TIMKEN1641H-2RS/FVSL613 | Deep groove ball bearing | 25.4×50.8×14.288 | Sealed | Not reported | Not reported |
| TIMKEN1726203-2RS | Deep groove ball bearing | 17×40×12 | Sealed | Not reported | Not reported |
| TIMKEN1726205-2RS | Deep groove ball bearing | 25×52×15 | Sealed | Not reported | Not reported |
| TIMKEN1726206-2RS | Deep groove ball bearing | 30×62×16 | Sealed | Not reported | Not reported |
| TIMKEN1726207-2RS | Deep groove ball bearing | 35×72×17 | Sealed | Not reported | Not reported |
| TIMKEN1726208-2RS | Deep groove ball bearing | 40×80×18 | Sealed | Not reported | Not reported |
| TIMKEN1726209-2RS | Deep groove ball bearing | 45×85×19 | Sealed | Not reported | Not reported |
— = not recorded. Width conventions differ for tapered assemblies, thrust bearings and mounted units. Always inspect the dimensional drawing.
Filter all 7,495 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
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 →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.
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.