Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Material Composition	PTFE + Bronze + Steel Backing
Bearing Type	Sleeve Bearing / Bushing
Lubrication	Self-Lubricating (Oil-Free)
Inner Diameter Options	22, 25, 28, 30, 32, 35 mm
Max Static Load	250 N/mm²
Max Dynamic Load	140 N/mm²
Max Sliding Speed	2.5 m/s (Dry)
Operating Temperature	-40°C to +110°C
Friction Coefficient	0.03 - 0.20
Compliance Standard	ISO 3547 / DIN 1494

5 reviews

Anonymous

Mar 29, 2026

Rating: 5/5

Perfect for high-load applications

Used these in a hydraulic press modification. The self-lubricating feature works exactly as described. No squeaking after months of heavy use.

Anonymous

Mar 14, 2026

Rating: 5/5

Solved our maintenance issue

We no longer need to schedule regular greasing for these joints. Saves us a lot of downtime in the factory.

Anonymous

Mar 12, 2026

Rating: 5/5

Great quality bronze composite

Ordered the 30mm ID set. Fitment was precise on the shaft. Much better than the plain plastic bushings we used before.

Anonymous

Feb 23, 2026

Rating: 5/5

Reliable supplier

Third time ordering these SF-1 bearings. Consistency across batches is excellent. Highly recommend for industrial machinery.

Anonymous

Feb 07, 2026

Rating: 4/5

Good value but tight fit

Quality seems solid. Had to press them in firmly which is expected for interference fit, but just be prepared with the right tools.

5 FAQ

Q: Can these withstand outdoor weather conditions?

A: Yes, the bronze and PTFE composition is resistant to corrosion and suitable for outdoor use within the temperature range.

Q: What is the tolerance for the inner diameter?

A: The standard tolerance is typically H7 for the housing and f7 for the shaft, depending on the specific size selected.

Q: Do I need to add grease during installation?

A: No, the SF-1 material is self-lubricating. However, a thin film of oil during initial installation can help prevent galling.

Q: Is there a maximum shaft hardness requirement?

A: We recommend a shaft hardness of at least 200 HB for optimal wear resistance and longevity of the bearing surface.

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

A: Yes, please contact our sales team directly through the inquiry form for volume discount quotes on large orders.

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