Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Material	Chrome Steel SAE 52100
Seal Type	Open, ZZ, or 2RS Options
Precision Grade	ABEC-5 Standard
Cage Type	Steel Ribbon Cage
Lubrication	Pre-lubricated with Light Grease
Max Speed	Up to 30,000 RPM (Size Dependent)
Dynamic Load	Varies by Bore Size
Operating Temperature	-20°C to +120°C
Corrosion Resistance	Standard Carbon Steel
Pack Size	10 Pieces per Order

5 reviews

Anonymous

Mar 21, 2026

Rating: 5/5

Great for DIY Fidget Spinners

Exactly what I needed for a custom spinner build. The 5mm bore was spot on and the spin time is impressive.

Anonymous

Mar 07, 2026

Rating: 5/5

Precise Dimensions

Measured perfectly with my calipers. No issues with fitting them into tight tolerance housings for my mechanical model.

Anonymous

Feb 17, 2026

Rating: 5/5

Perfect for RC Drivetrain

Used these in my 1/10 scale buggy upgrade. They spin freely and fit the motor shaft perfectly. Noticed less friction immediately.

Anonymous

Feb 05, 2026

Rating: 4/5

Smooth but noisy at high speed

Good quality bearings for the price. They run smooth at low RPMs but get a bit noisy when pushed to max speed on my drill project.

Anonymous

Feb 01, 2026

Rating: 3/5

One bearing was stiff

Most were fine but one out of the pack felt stiff out of the box. The rest work well enough for my decorative application.

5 FAQ

Q: Do you offer stainless steel versions?

A: Currently, this listing is for Chrome Steel only. We may stock stainless steel options in the future.

Q: Is bulk pricing available for 100+ units?

A: Yes, please contact our sales team directly through the store page for volume discount inquiries.

Q: Can I wash out the grease for oil lubrication?

A: Yes, you can clean the bearings with a solvent and re-lubricate with light oil for higher speeds, though grease lasts longer.

Q: What is the outer diameter for 5mm bore?

A: Please check the specific size chart in the product images. Standard 5mm bore bearings typically have a 16mm outer diameter.

Q: Are these suitable for 3D printer motors?

A: Yes, these are commonly used for NEMA motor shafts depending on the bore size selected. Please verify your motor shaft diameter.

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