Description
Reviews
| 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) |
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.
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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