Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Material | 440C Stainless Steel |
| Seal Type | RS (Rubber Contact Seal) |
| Precision Class | ABEC-5 |
| Cage Material | Nylon PA66 |
| Lubrication | Food Grade Grease |
| Inner Diameter Range | 4mm to 9mm |
| Outer Diameter Range | 9mm to 19mm |
| Width Range | 4mm to 5mm |
| Max Rotational Speed | 30,000 RPM |
| Package Quantity | 10 Pieces per Pack |
Anonymous
Apr 02, 2026
Rating: 5/5
Great corrosion resistance
Using these in a humid environment. No signs of rust after a month of heavy use. Very satisfied with the durability.
Anonymous
Mar 17, 2026
Rating: 5/5
Perfect for my fishing reel
These bearings are smooth and seem very resistant to saltwater corrosion. Installed them in my reel and the cast is much smoother now.
Anonymous
Mar 05, 2026
Rating: 5/5
Exactly as described
Bought the S688 size for a robotics project. Precision is great and they spin freely without any grit. Highly recommend.
Anonymous
Feb 26, 2026
Rating: 4/5
Good value for money
Solid bearings for the price. Not industrial grade but perfect for hobbyist applications like drones or skates.
Anonymous
Feb 04, 2026
Rating: 4/5
Good quality, slow shipping
The bearings themselves are excellent quality and fit perfectly. Only downside was the shipping took a bit longer than expected.
Q: Can I use these for skateboard wheels?
A: Yes, but ensure the size matches your hub. 608 is standard for skates, these are miniature bearings.
Q: Are these suitable for high temperature applications?
A: They operate safely between -20°C to 120°C. For higher temps, please contact us.
Q: Do you offer bulk discounts?
A: Yes, please contact customer service for orders over 50 packs for pricing details.
Q: What is the difference between S688 and 688?
A: The 'S' prefix indicates stainless steel material. Standard 688 may be chrome steel.
Q: Do these come pre-lubricated?
A: Yes, all bearings come pre-lubricated with food grade grease suitable for general use.
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