608-2RS is a common small-bearing designation. The Bearing Number Decoder treats 608 as a miniature deep-groove ball bearing pattern and reads 2RS as two rubber seals.
Segment breakdown
| Segment | Decoder reading | Boundary |
|---|---|---|
| 608 | Miniature deep-groove ball bearing, 8 mm bore. | Use the maker catalog for full dimensions and ratings. |
| 2RS | Two rubber seals. | Seal contact, drag, and material vary by product line. |
Why 608 is handled separately
Common miniature bearing numbers do not always read like the four-digit 6204 or 6308 pattern. The decoder handles 608 as an 8 mm bore miniature deep-groove bearing pattern, then applies suffix parsing to the remaining visible suffix.
What 2RS adds
The suffix tells the parser that seals are present on both sides. It does not identify lubricant, seal material, speed rating, dust or water suitability, or service life. Those details are catalog and application questions.
Do not replace the catalog row with a nickname
608 bearings are often searched by application names or seller shorthand, but that shorthand is not a controlled designation. Keep the printed bearing number, suffixes, and brand catalog together when comparing parts.
Good input habits
Enter 608-2RS, 608 2RS, or the complete printed designation if more suffixes are present. Do not cut off a trailing maker suffix just because the first two segments decode cleanly. Preserving the full string lets the result show unresolved suffixes instead of hiding them.
Source and limits
Sources: open-source bearing CSV tables from gumyr/cq_warehouse (Apache-2.0), plus NSK bearing designation guidance, JTEKT/Koyo bearing number tables, SKF designation guidance, ISO rolling bearing references including ISO 5753-1 for radial internal clearance, and ANSI/ABMA tapered roller bearing references; verified 2026-08-30.
- This content explains the imported bearing database first, then the parser fallback for supported patterns that are not in the exact table.
- Exact database rows preserve the imported dimensions and suffix notes, but they still do not replace the maker catalog for procurement, maintenance, or safety decisions.
- Bore code parsing does not decide outside diameter, width, cage material, lubrication, fit, load rating, or interchangeability.
- Metric tapered roller and inch-design tapered roller bearings use separate designation systems, so verify the exact catalog entry before purchase or maintenance work.
Related bearing guides
How to Read Bearing Numbers | Bearing Seal, Shield, and Clearance Suffixes | 6204-2RS-C3 Bearing Number