Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Brand Name	C&U
Bearing Type	Deep Groove Ball Bearing
Model Series	693, 694, 695, 696, 697, 698, 699
Seal Configuration	2Z (Metal Shield) / 2RZ (Rubber Seal)
Material Composition	Chrome Steel GCr15
Precision Rating	ISO Class P0 / ABEC-1
Cage Material	Stamped Steel
Lubrication Status	Pre-lubricated with Grease
Recommended Application	High-Speed Power Tools, Motors, Spindles
Country of Origin	China

5 reviews

Anonymous

Mar 25, 2026

Rating: 4/5

Good value

Overall good quality for the price. One bearing felt slightly tighter than the others during installation, but once running they all perform well.

Anonymous

Mar 13, 2026

Rating: 5/5

High RPM stable

Using these in a high-speed spindle motor. They handle the speed without overheating. No noise even after several hours of continuous use.

Anonymous

Feb 26, 2026

Rating: 5/5

Excellent for rotary tools

Replaced the worn bearings in my Dremel tool with these. The operation is smooth and there is significantly less vibration than before. Highly recommend for DIY enthusiasts.

Anonymous

Feb 17, 2026

Rating: 5/5

Fast shipping

Arrived quickly and well packaged. Each bearing was individually wrapped to prevent damage. Will buy again for my workshop maintenance.

Anonymous

Jan 28, 2026

Rating: 5/5

Genuine product

I was worried about counterfeits but these are definitely genuine C&U bearings. The packaging was secure and the dimensions match the specifications perfectly.

5 FAQ

Q: What is the maximum RPM these bearings can handle?

A: The maximum RPM varies by specific model size. Generally, these miniature bearings are designed for high-speed applications ranging from 20,000 to 50,000 RPM depending on load and lubrication.

Q: Are these bearings made of stainless steel?

A: No, these are made from Chrome Steel (GCr15) which offers high hardness and wear resistance. They are not stainless steel and should be kept dry to prevent rust.

Q: What is the return policy if I order the wrong size?

A: You can return unused items within 30 days of delivery. Please ensure the packaging is intact and contact our support team for a return authorization.

Q: Do I need to add additional grease before installation?

A: No, these bearings come pre-lubricated with standard grease suitable for most applications. Adding more grease may cause overheating at high speeds.

Q: Which seal type is better for dusty environments, 2Z or 2RZ?

A: For dusty environments, the 2RZ (Rubber Seal) is generally better as it provides a tighter seal against contaminants compared to the 2Z (Metal Shield).

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