688 bearing: 8 × 16 × 5 mm
Bearings › 688
A 688 is a deep groove ball bearing, 8 mm bore, 16 mm outside diameter, 5 mm wide. Variants: 688-2RS (rubber sealed), 688-ZZ (metal shields), 688 open.
| Bore | 8 mm |
|---|---|
| Outside diameter (OD) | 16 mm |
| Width | 5 mm |
Sizes from maker catalogues. No sourced load ratings for this one yet, so none are shown.
Open 688 in BenchsmithAdd to order list
What the number means
6 | Deep groove ball bearing, miniature |
8 | Size series |
8 | Bore 8 mm (under 10 mm the last digit is the bore) |
Ask for
- 688-2RS: rubber sealed both sides. Other brands: SKF 688-2RSH, FAG 688-2RSR, NSK 688DDU, NTN 688LLU, Koyo 688-2RS.
- 688-ZZ: metal shields both sides. Other brands: SKF 688-2Z, FAG 688-2ZR, NSK 688ZZ, NTN 688ZZ, Koyo 688ZZ.
- 688: open, no seals or shields.
Add C3 for electric motors and anything that runs hot.
Same bore, different size
One size up or down
Every bearing 8 × 16 × 5 mm: 8 × 16 × 5 mm bearings. Measured a bearing with no number on it? Type the bore, OD and width into Benchsmith → Find → Bearing.