The 6200 series is the most-cross-referenced standard deep-groove ball bearing in the world. If you buy deep-groove bearings for electric motors, fans, pumps, appliances or general machinery, you will encounter it. This guide covers the dimensions you actually need, the load basics, and what to check before placing a replacement order.
6200 series dimensions (the ones that matter)
All 6200 series bearings share the same proportions — only the bore changes with the last two digits. The pattern is XX × XX × XX mm (bore × outer × width).
| Model | Bore (d) | Outer (D) | Width (B) | Approx weight |
|---|---|---|---|---|
| 6200 | 10 mm | 30 mm | 9 mm | 32 g |
| 6201 | 12 mm | 32 mm | 10 mm | 37 g |
| 6202 | 15 mm | 35 mm | 11 mm | 45 g |
| 6203 | 17 mm | 40 mm | 12 mm | 65 g |
| 6204 | 20 mm | 47 mm | 14 mm | 110 g |
| 6205 | 25 mm | 52 mm | 15 mm | 130 g |
Values shown are for the open variant. ZZ (metal shield) and 2RS (rubber seal) variants share the same envelope dimensions.
Seal variants you'll encounter
- 6200 — open (no seals), lowest friction, needs relubrication
- 6200ZZ — two metal shields, low drag, blocks large debris
- 6200-2RS — two rubber seals, watertight, sealed for life
Before ordering, check what your equipment actually uses. If the original is a 2RS and you order a ZZ, the bearing may fail early in a wet or dusty environment.
Load ratings — what the numbers mean
Every 6200 bearing has two key load ratings:
- Cr (dynamic load rating) — the load the bearing can handle while rotating. Higher is better for continuous-duty applications.
- C0r (static load rating) — the load the bearing can handle while stationary. Matters when the bearing sees load without rotating, or shock loads.
For a typical 6203-2RS: Cr ≈ 9.5 kN, C0r ≈ 4.5 kN. These numbers vary slightly by manufacturer and steel grade. Don't compare load ratings across brands without checking the test standard.
Replacement — what to verify before you order
- Confirm the dimensions — measure bore, outer and width with calipers. The stamped number can be wrong if the bearing has been replaced before.
- Identify the seal type — visible metal shield = ZZ, visible rubber lip = 2RS, nothing visible = open.
- Note the brand — if it's an SKF 6203-2RS, the exact same model from NSK, NTN or FAG will match dimensionally. We declare these as "compatible references", not "authorized equivalents".
- Check the clearance — C3 is the most common default for electric motors. If you don't know, C3 is usually safe.
- Confirm quantity — for replacement, you usually want a small spare batch; for production, ask for the annual demand estimate.
Common mistakes buyers make
- Ordering by part number alone without checking the seal type — a 6203ZZ is not the same as a 6203-2RS in a wet environment
- Assuming "in stock" from a website — many suppliers list stock they don't have. We verify before quoting.
- Comparing prices without comparing steel grade — cheap bearings often use lower-grade steel that fails early under load
Ready to specify your 6200 order?
Send us the model number, the seal type, the quantity and the application. We'll confirm the exact spec, verify supply and quote you a realistic lead time — not a placeholder.