6301 bearing: 12 × 37 × 12 mm
Bearings › 6301
A 6301 is a deep groove ball bearing, 12 mm bore, 37 mm outside diameter, 12 mm wide. Variants: 6301-2RS (rubber sealed), 6301-ZZ (metal shields), 6301 open.
| Bore | 12 mm |
|---|---|
| Outside diameter (OD) | 37 mm |
| Width | 12 mm |
| Dynamic load rating C | 10.1 kN |
| Static load rating C0 | 4.15 kN |
| Limiting speed | 28 000 r/min |
| Weight | 0.0574 kg |
Ratings and weight: SKF product page, skf.com, read 2 Oct 2026, designation 6301. Limiting speed as SKF gives it.
Open 6301 in BenchsmithAdd to order list
What the number means
6 | Deep groove ball bearing |
3 | Medium series |
01 | Bore code 01 = 12 mm |
Ask for
- 6301-2RS: rubber sealed both sides. Other brands: SKF 6301-2RSH, FAG 6301-2RSR, NSK 6301DDU, NTN 6301LLU, Koyo 6301-2RS.
- 6301-ZZ: metal shields both sides. Other brands: SKF 6301-2Z, FAG 6301-2ZR, NSK 6301ZZ, NTN 6301ZZ, Koyo 6301ZZ.
- 6301: open, no seals or shields.
Add C3 for electric motors and anything that runs hot.
About the 63 series
Same bore as the 62, but a bigger OD and wider. Heavier load, same shaft. You'll find them in pumps, compressors and the drive end of bigger motors.
If a 62 keeps failing and the housing has room, a 63 is the usual upgrade. Check the housing bore first; it won't fit a 62's seat.
Same bore, different size
One size up or down
Every bearing 12 × 37 × 12 mm: 12 × 37 × 12 mm bearings. Measured a bearing with no number on it? Type the bore, OD and width into Benchsmith → Find → Bearing.