Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Material Composition	440C & 304 Stainless Steel
Bearing Series	6900 Deep Groove Ball Bearings
Seal Type	ZZ (Metal Shield) or 2RS (Rubber Seal)
Precision Rating	ABEC-1 / ISO P0
Inner Diameter Range	10mm to 35mm
Outer Diameter Range	22mm to 55mm
Width Range	6mm to 10mm
Cage Material	Steel or Nylon Reinforced
Lubrication	Pre-lubricated with Grease
Corrosion Resistance	High (Suitable for Marine Environments)

5 reviews

Anonymous

Apr 19, 2026

Rating: 5/5

Precise dimensions

Measured every bearing in the pack with calipers. All within tolerance. Smooth rotation out of the box. Great for precision machinery.

Anonymous

Apr 09, 2026

Rating: 5/5

Excellent for saltwater use

Replaced all the bearings on my boat trailer with these. After a full season of saltwater exposure, there is zero rust. Highly recommend for marine applications.

Anonymous

Apr 05, 2026

Rating: 5/5

Durable and reliable

Using these in a high vibration environment. They have held up well without loosening or failing. The 440 steel provides good hardness.

Anonymous

Mar 27, 2026

Rating: 5/5

Perfect fit for 6902 size

Bought specifically for the 6902 model. Fit perfectly into my electric scooter wheel hub. Much better than the carbon steel ones I had before.

Anonymous

Mar 22, 2026

Rating: 4/5

Good quality, slow shipping

The bearings themselves are fantastic and spin very quietly. Only giving 4 stars because the shipping took longer than expected. Product quality is 5 stars though.

5 FAQ

Q: Is the grease food grade safe?

A: The standard lubrication is industrial grade. If you require food grade grease for FDA compliant applications, please specify this in your order notes.

Q: Do you offer bulk discounts for over 100 units?

A: Yes, please contact our sales team directly through the customer service portal for bulk pricing inquiries on orders exceeding 100 units.

Q: Are these bearings sealed on both sides?

A: Yes, all bearings in this series come with shields or seals on both sides to protect the internal components from dust and debris.

Q: What is the main difference between the 440 and 304 steel options?

A: 440C stainless steel is harder and offers better wear resistance for high load applications, while 304 stainless steel offers superior corrosion resistance in harsh chemical environments.

Q: Can these handle high temperatures?

A: Standard grease lubrication allows operation up to 120°C. For higher temperatures, special high-heat grease may be required.

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