Attributes

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

5 reviews

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.

5 FAQ

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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