Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Brand	KIF
Country of Origin	Japan
Bearing Type	Hybrid Ceramic
Precision Grade	P5 (ABEC-5)
Inner Ring Material	440C Stainless Steel
Outer Ring Material	440C Stainless Steel
Rolling Element	Silicon Nitride (Si3N4)
Cage Material	Stainless Steel
Lubrication	Pre-lubricated with High-Speed Grease
Operating Temperature	-40°C to +120°C

5 reviews

Anonymous

Apr 12, 2026

Rating: 5/5

Worth the Investment

Longer life expectancy observed so far. We use these in robotic arms where reliability is key. Genuine KIF quality as described.

Anonymous

Mar 08, 2026

Rating: 4/5

Very Smooth

Noticeable difference from steel bearings in terms of smoothness. Price is higher but justified for the performance gain in precision applications.

Anonymous

Feb 26, 2026

Rating: 5/5

Excellent Precision

Used these in a high-speed spindle upgrade and the difference is night and day. Much less vibration and heat generation compared to standard steel bearings.

Anonymous

Feb 23, 2026

Rating: 5/5

Fast Shipping

Product arrived well packaged and protected from moisture. Bearings spin freely without any grit or noise. Happy with the purchase.

Anonymous

Feb 05, 2026

Rating: 4/5

Good Performance

Running cool under load which was our main concern. Only giving 4 stars because lead time was slightly longer than expected.

5 FAQ

Q: Are these full ceramic or hybrid ceramic bearings?

A: These are hybrid ceramic bearings. They feature stainless steel inner and outer rings with silicon nitride ceramic balls.

Q: What is the ABEC rating equivalent for P5 grade?

A: P5 precision grade is generally equivalent to ABEC-5 in terms of tolerance and running accuracy standards.

Q: Do you offer bulk discounts for orders over 50 units?

A: Yes, please contact our sales team directly through the customer service portal for bulk pricing inquiries.

Q: How is the corrosion resistance compared to standard chrome steel?

A: The 440C stainless steel rings offer significantly better corrosion resistance than standard chrome steel bearings.

Q: Do these come pre-lubricated or do I need to add oil?

A: Yes, they come pre-lubricated with high-speed synthetic grease suitable for most standard applications.

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