Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Brand	NSK
Model Number	MR52 / 693ZZ
Inner Diameter	3 mm
Outer Diameter	8 mm
Width	4 mm
Material	Chrome Steel
Seal Type	ZZ (Metal Shield)
Precision Rating	ABEC-5
Cage Material	Steel
Country of Origin	Japan

5 reviews

Anonymous

Apr 06, 2026

Rating: 5/5

Fast Shipping

Arrived quickly and works great. The high-speed rating is suitable for my GPU fan which spins at high RPMs under load.

Anonymous

Mar 25, 2026

Rating: 5/5

Quiet Operation

No more grinding noise from my cooling fan. The NSK quality is evident in the smooth rotation. Highly recommend for anyone repairing PC fans.

Anonymous

Mar 11, 2026

Rating: 5/5

Perfect Replacement

These bearings fit my GPU fan perfectly. The dimensions were exact at 3x8x4 mm. My graphics card is running quietly again after replacing the worn-out originals.

Anonymous

Feb 20, 2026

Rating: 5/5

High Speed

Spins very smoothly without any wobble. These are ideal for miniature fan repairs. Very satisfied with the purchase and performance.

Anonymous

Feb 20, 2026

Rating: 4/5

Good Quality

Genuine NSK product as described. Installation required some patience but the bearing itself is top notch. Deducted one star only because packaging was minimal.

5 FAQ

Q: What is the maximum RPM these can handle?

A: These are high-speed miniature bearings designed for cooling fans, typically handling speeds well over 10,000 RPM.

Q: Is there a warranty included?

A: Yes, all our NSK bearings come with a standard 30-day return policy and manufacturer defect warranty.

Q: Will this bearing fit a GeForce 3070 fan?

A: Please measure your existing bearing. If the dimensions are 3x8x4 mm, this MR52/693ZZ model will be compatible.

Q: Are these bearings pre-lubricated?

A: Yes, these NSK bearings come pre-lubricated from the factory and are sealed with metal shields.

Q: How many bearings are included in one order?

A: This listing is for a pair of bearings, sufficient for one standard GPU fan motor.

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