Attributes

Brand	-
Category	Women's Shoes / Other Shoe Accessories
Origin	-
Material	Sintered Bronze with Oil Impregnation
Type	Self-Lubricating Sleeve Bearing
Model Number	SF-2
Lubrication	Oil-Impregnated (Maintenance Free)
Operating Temperature	-10°C to +80°C
Max Load Capacity	Dynamic: 15 N/mm², Static: 30 N/mm²
Max Sliding Speed	0.6 m/s (Dry), 2.5 m/s (Oil Lubricated)
Friction Coefficient	0.05 - 0.15
Surface Finish	Precision Machined
Application	Shoe Machinery, Light Industrial Equipment, Hinges

6 reviews

Anonymous

Mar 31, 2026

Rating: 5/5

Exactly as described

No complaints here. The product matches the description perfectly. It's a reliable component for anyone needing a maintenance-free bushing solution.

Anonymous

Mar 29, 2026

Rating: 5/5

Great value for money

Bought a pack for various DIY projects around the garage. The bronze composite material feels durable and sturdy. Much better than the plastic ones I tried before.

Anonymous

Mar 26, 2026

Rating: 4/5

Solid performance under load

Using these in a low-speed, high-load application for a leather press. They handle the weight well without seizing up. Just make sure to measure your shaft diameter accurately before ordering.

Anonymous

Mar 17, 2026

Rating: 4/5

Good quality, precise dimensions

The tolerances are very tight which is great for precision applications. I used these for a custom hinge project. Only giving 4 stars because shipping took a bit longer than expected.

Anonymous

Mar 16, 2026

Rating: 5/5

Excellent self-lubricating properties

These bearings are fantastic. The oil impregnation really works; I haven't had to add any lubricant since installation three months ago. Very quiet operation too.

Anonymous

Mar 09, 2026

Rating: 5/5

Perfect for my shoe repair machine

I needed a replacement bushing for my vintage sole stitching machine. The SF-2 bearing fit perfectly and runs smoothly without needing constant oiling. Highly recommended for small workshop equipment.

5 FAQ

Q: What are the standard inner and outer diameter tolerances for the SF-2 series?

A: The standard tolerance for the inner diameter is H7 and for the outer diameter is h6. Please refer to the specific size chart in the product manual for exact measurements based on your required dimensions.

Q: Can these bearings be used in wet or underwater environments?

A: While the SF-2 bearing is oil-impregnated, it is not specifically designed for continuous submersion in water. Prolonged exposure to water may wash out the internal lubricant. They are best suited for dry or occasionally damp conditions.

Q: What is the maximum rotational speed recommended for this bushing?

A: For dry running conditions, we recommend a maximum sliding speed of 0.6 m/s. If external lubrication is added during operation, the speed can go up to 2.5 m/s. Exceeding these limits may cause overheating.

Q: Is this compatible with stainless steel shafts?

A: Yes, the SF-2 sintered bronze material is fully compatible with hardened carbon steel and stainless steel shafts. Ensure the shaft surface finish is smooth (Ra < 0.8) to minimize wear.

Q: Do I need to pre-oil the bearing before installation?

A: No, the SF-2 bearing comes pre-impregnated with lubricating oil from the factory. You can install it directly. However, adding a thin layer of oil to the shaft before insertion can help with the initial run-in period.

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