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Home / Bearings & Bushings / Miniature Deep Groove Ball Bearings 6901ZZ, 6901RS, 6902ZZ, 6902RS, 6303ZZ, 6903RS

Attributes

Brand -
Category Industrial Small Parts / Bearings & Bushings
Origin -
Material Chrome Steel GCr15
Seal Type ZZ (Metal) or RS (Rubber)
Precision Grade ABEC-1 (ISO P0)
Cage Material Steel
Lubrication Pre-greased
Inner Diameter 12mm to 17mm (Varies by Model)
Outer Diameter 24mm to 35mm (Varies by Model)
Width 5mm to 11mm (Varies by Model)
Max Speed 10,000 to 30,000 RPM
Package Quantity 10 Pieces per Option

5 reviews

A

Anonymous

Mar 24, 2026

Rating: 5/5

Exact replacement parts

Needed specific sizes for my RC car gearbox. The 6902RS fit exactly as specified.

A

Anonymous

Mar 24, 2026

Rating: 5/5

Perfect for my drone build

These bearings are smooth and fit perfectly into my motor mounts. No wobble at high speeds.

A

Anonymous

Mar 02, 2026

Rating: 5/5

Fast delivery

Arrived quickly and were well protected in packaging. No damage during shipping.

A

Anonymous

Feb 28, 2026

Rating: 4/5

Good value

Overall good quality for the price. One was slightly stiff out of the box but loosened up after use.

A

Anonymous

Feb 17, 2026

Rating: 5/5

High quality steel

You can tell the material is decent quality. No noise during operation under load.

5 FAQ

Q: Is RS better than ZZ for dust?

A: Yes, RS rubber seals offer better dust and moisture protection compared to ZZ metal shields.

Q: Can I wash these bearings?

A: No, washing removes pre-applied grease. It is recommended to use them as received.

Q: Which model fits a 12mm shaft?

A: The 6901 series fits 12mm shafts. Please check the specific model dimensions before ordering.

Q: Are these stainless steel?

A: No, these are Chrome Steel for durability. We do carry stainless options in a separate listing.

Q: Do you offer bulk discounts?

A: Please contact support directly for bulk order pricing and availability.

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