Attributes

Brand	-
Category	Women's Shoes / Other Shoe Accessories
Origin	-
Material	Bronze with PTFE Composite Layer
Type	Oil-Free Self-Lubricating Bushing
Model Series	SF1-5020/5030/5040/5050
Inner Diameter Range	5mm to 50mm
Operating Temperature	-40°C to +110°C
Max Load Capacity	140 N/mm² (Static)
Friction Coefficient	0.03 - 0.20 (Dynamic)
Application	Shoe Machinery & Industrial Equipment
Lubrication	Maintenance-Free (Solid Lubricant)
Finish	Precision Machined Bronze Surface

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Reliable for high-cycle use

We use these in a high-frequency cutting machine. After three months of continuous operation, there is no sign of wear or binding. The SF1 series really lives up to its reputation for durability.

Anonymous

Mar 26, 2026

Rating: 5/5

Perfect fit for our repair shop

Ordered the SF1-5030 series for some vintage shoe stitching machines. The dimensions were exact, and the self-lubricating feature saves us a lot of maintenance time. Highly recommended for industrial sewing applications.

Anonymous

Mar 19, 2026

Rating: 5/5

Solved our lubrication issues

Working in a clean environment where oil drips are not allowed was a challenge until we found these. They run completely dry and perform exceptionally well under load.

Anonymous

Mar 18, 2026

Rating: 5/5

Excellent noise reduction

Replaced old metal sleeves with these oil-free bushings in our conveyor system. The noise level dropped significantly, and the movement is much smoother. Great value for the price.

Anonymous

Mar 14, 2026

Rating: 4/5

Standard industrial grade

Does exactly what it says. No frills, just a reliable bearing sleeve. The tolerance is tight which is good for precision work. Would buy again for future projects.

Anonymous

Mar 13, 2026

Rating: 4/5

Good quality, fast shipping

The bronze bushings arrived well-packaged. They seem very durable and the composite layer looks uniform. Took off one star because the packaging didn't include specific installation torque specs, but overall a solid product.

5 FAQ

Q: Do you provide technical drawings for custom sizes?

A: Yes, we offer custom machining services. Please contact our sales team with your specific dimensions and load requirements, and we will provide a quote and technical drawing within 24 hours.

Q: Are these bearings suitable for wet environments?

A: While the SF1 series is self-lubricating, it is primarily designed for dry or slightly humid conditions. For constant submersion or highly corrosive wet environments, we recommend checking our stainless steel specific variants.

Q: What is the lead time for bulk orders of the SF1-5050 model?

A: For bulk orders exceeding 500 units of the SF1-5050 model, the standard lead time is 7-10 business days. Expedited shipping options are available at checkout.

Q: Can I press-fit these into an aluminum housing?

A: Yes, these bushings are designed to be press-fitted. However, please ensure the housing tolerance follows ISO H7 standards to prevent deformation of the bronze layer during installation.

Q: Is there a minimum order quantity?

A: There is no minimum order quantity for standard sizes. You can purchase single units for prototyping or large batches for production runs.

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