6218 bearing: 90 × 160 × 30 mm
Bearings › 6218
A 6218 is a deep groove ball bearing, 90 mm bore, 160 mm outside diameter, 30 mm wide. Variants: 6218-2RS (rubber sealed), 6218-ZZ (metal shields), 6218 open.
| Bore | 90 mm |
|---|---|
| Outside diameter (OD) | 160 mm |
| Width | 30 mm |
| Dynamic load rating C | 101 kN |
| Static load rating C0 | 73.5 kN |
| Limiting speed | 5 300 r/min |
| Weight | 2.16 kg |
Ratings and weight: SKF product page, skf.com, read 2 Oct 2026, designation 6218. Limiting speed as SKF gives it.
Open 6218 in BenchsmithAdd to order list
What the number means
6 | Deep groove ball bearing |
2 | Light series |
18 | Bore 18 × 5 = 90 mm |
Ask for
- 6218-2RS: rubber sealed both sides. Other brands: SKF 6218-2RSH, FAG 6218-2RSR, NSK 6218DDU, NTN 6218LLU, Koyo 6218-2RS.
- 6218-ZZ: metal shields both sides. Other brands: SKF 6218-2Z, FAG 6218-2ZR, NSK 6218ZZ, NTN 6218ZZ, Koyo 6218ZZ.
- 6218: open, no seals or shields.
Add C3 for electric motors and anything that runs hot.
About the 62 series
The workhorse. Electric motors, pumps, gearboxes, conveyor rollers, anything with a moderate load and real speed. If you pull a bearing off a motor and it's metric, it's probably a 62 or a 63.
2RS keeps dirt out and grease in, but runs warmer and slower. ZZ shields run cooler but let fine dust through. Dirty or wet: 2RS. Fast and clean: ZZ or open with oil.
Motors usually want C3 clearance. The rotor heats up and grows; a CN bearing can run tight and die early.
Same bore, different size
- 601890 × 140 × 24
One size up or down
Every bearing 90 × 160 × 30 mm: 90 × 160 × 30 mm bearings. Measured a bearing with no number on it? Type the bore, OD and width into Benchsmith → Find → Bearing.