A
Anonymous
Apr 16, 2026
Rating: 5/5
Quiet operation
Much quieter than metal bearings in my appliance repair. Great for noise-sensitive environments.
Description
Japanese Precision | POM Plastic Waterproof & Insulating | Oil-Free Self-Lubricating
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Material Composition | POM (Polyoxymethylene) & Nylon Blend |
| Brand Name | KIF |
| Country of Origin | Japan |
| Inner Diameter | 5 mm |
| Outer Diameter | 10 mm |
| Width | 4 mm |
| Max Load Capacity | 50 N |
| Operating Temperature | -40°C to 120°C |
| Lubrication Type | Self-Lubricating Resin |
| Package Quantity | 10 Units |
5 reviews
A
Anonymous
Apr 02, 2026
Rating: 4/5
Good quality
Fit was slightly tight initially but loosened up after use. Durability seems high.
A
Anonymous
Mar 28, 2026
Rating: 5/5
Perfect for robotics
Used these on a small arm project. Very smooth and no grease mess. The fit was precise.
A
Anonymous
Feb 21, 2026
Rating: 5/5
Great value
Genuine KIF quality at a reasonable price point. Will order again for future projects.
A
Anonymous
Feb 20, 2026
Rating: 5/5
Waterproof as stated
Used in a wet environment, no corrosion issues at all. Plastic holds up well against water.
5 FAQ
Q: Do I need to add oil to these bearings?
A: No, these are self-lubricating and designed to operate without additional grease or oil.
Q: Can they handle exposure to chemicals?
A: They are resistant to many oils and solvents, but avoid strong oxidizing acids.
Q: What is the shaft tolerance standard?
A: These are designed to fit standard h6 shaft tolerance specifications.
Q: Are these bearings magnetic?
A: No, the plastic materials used are non-magnetic and safe for sensitive electronics.
Q: What is the maximum RPM recommended?
A: For optimal lifespan, we recommend operating under 6000 RPM depending on the load.
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