Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Material Composition | SF1 Composite (PTFE/Bronze/Steel) |
| Inner Diameter | 4 mm |
| Outer Diameter | 10 mm |
| Wall Thickness | 3 mm |
| Lubrication Type | Self-Lubricating (Oil-Free) |
| Static Load Capacity | 250 N/mm² |
| Dynamic Load Capacity | 140 N/mm² |
| Operating Temperature | -40°C to +110°C |
| Friction Coefficient | 0.03 - 0.20 |
| Country of Origin | China |
Anonymous
Mar 27, 2026
Rating: 5/5
Durable bearing
Running for weeks in a high-vibration setup. No signs of wear yet. The steel backing provides excellent stability.
Anonymous
Mar 11, 2026
Rating: 4/5
Good quality
Material feels strong and durable. The fit was slightly tight initially but smoothed out after a few cycles. Good value for the price.
Anonymous
Mar 05, 2026
Rating: 5/5
Perfect for my project
Fit perfectly on the 4mm shaft. The self-lubricating feature saves me time on maintenance. Highly recommend for small motor applications.
Anonymous
Feb 17, 2026
Rating: 5/5
Exact specifications
Measured exactly 3mm wall thickness with calipers. Dimensions are accurate which is crucial for my assembly.
Anonymous
Feb 03, 2026
Rating: 5/5
No oil needed
Great for clean environments where oil drip is a concern. The composite material works smoothly without additional grease.
Q: What is the maximum RPM this sleeve can handle?
A: Maximum speed depends on the load. For light loads, it can handle up to 2000 RPM. Please consult the load-speed curve for specific applications.
Q: Does this bearing require any grease or oil during installation?
A: No, the SF1 composite material is self-lubricating. You can install it dry, though a light film of oil can help with initial press fitting.
Q: Can I press fit this into a aluminum housing?
A: Yes, a light press fit is recommended. Ensure the housing tolerance is H7 to prevent damage to the composite layer during installation.
Q: Are the dimensions strictly metric?
A: Yes, all specifications including Inner Diameter, Outer Diameter, and Wall Thickness are manufactured to metric standards.
Q: Is this resistant to corrosion if used outdoors?
A: The bronze layer offers moderate corrosion resistance, but it is not marine grade. We recommend protection from direct moisture for long-term outdoor use.
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