Attributes

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

5 reviews

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.

5 FAQ

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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