Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Material	304 Stainless Steel
Outer Diameter	4 mm
Available Bore Sizes	2, 3, 5, 6, 7, 8, 9, 10, 12 mm
Width	1.2 mm
Seal Type	ZZ Metal Shield
Precision Class	ABEC-7
Dynamic Load Rating	120 N
Maximum Speed	30,000 RPM
Lubrication	Pre-greased
Package Quantity	10 Pieces per Pack

5 reviews

Anonymous

Apr 24, 2026

Rating: 3/5

Packaging needs improvement

The bearings themselves work well, but two arrived slightly dusty due to poor sealing in the bag. Cleaned them and they work fine.

Anonymous

Apr 16, 2026

Rating: 5/5

Great value bulk pack

Exactly what I needed for my robotics project. Consistent sizing across all 10 pieces in the pack.

Anonymous

Apr 13, 2026

Rating: 5/5

Silent operation

Replaced the noisy bearings in my desk fan with these. You can barely hear it now. Stainless steel is a nice touch for durability.

Anonymous

Apr 06, 2026

Rating: 4/5

Good quality, tight fit

Quality seems high for the price. The 3mm bore was a bit tight on my shaft initially but loosened up after use.

Anonymous

Feb 04, 2026

Rating: 5/5

Perfect for micro drones

These bearings are incredibly smooth. Used them on my 65mm whoop frame and the motors spin up instantly. Very quiet operation too.

5 FAQ

Q: What grease is used inside?

A: They come pre-lubricated with standard lightweight bearing grease suitable for general use.

Q: Are these suitable for high RPM applications?

A: Yes, they are rated for up to 30,000 RPM depending on lubrication and load.

Q: Do you sell a 4mm bore version?

A: This specific listing is for 4mm OD. Please check our other listings for different outer diameter specifications.

Q: Can these be washed with water?

A: Being stainless steel, they resist rust, but we recommend drying them thoroughly after exposure to moisture.

Q: Is the 2mm bore true to size?

A: Yes, all bore sizes are machined to standard tolerance specifications.

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