Attributes

Brand	-
Category	Stationery, Educational Electronics & Office Supplies / Tape Dispensers
Origin	-
Material	Steel Backing with Porous Bronze and PTFM Overlay
Inner Diameter	30 mm
Outer Diameter	34 mm
Length	10 mm
Type	SF-1 Self-Lubricating Composite Bushing
Max Load Capacity	250 N/mm² (Static)
Friction Coefficient	0.03 - 0.10 (Dry Running)
Operating Temperature	-40°C to +110°C
Surface Finish	Precision Machined for Smooth Sliding
Application	Automotive, Hydraulic Cylinders, and Industrial Machinery

6 reviews

Anonymous

Mar 30, 2026

Rating: 4/5

Solid bearing for the price

Does exactly what it says. Easy to press fit into the housing. The sliding motion is very smooth right out of the box. Good value for money.

Anonymous

Mar 22, 2026

Rating: 4/5

Good quality, fast shipping

The bronze composite material feels very durable. I used them in a low-speed, high-load mechanism. They run smoothly and quietly. Took off one star only because the packaging was a bit loose.

Anonymous

Mar 17, 2026

Rating: 5/5

Perfect fit for my hydraulic repair

Ordered these SF-1 bearings for a custom project. The dimensions were exact (30x34x10), and the self-lubricating feature works great without needing grease. Highly recommended for sliding applications.

Anonymous

Mar 17, 2026

Rating: 5/5

Great for automotive suspension links

Replaced old rubber bushings with these metal composite ones on my off-road vehicle. Much better durability and no squeaking. The 30mm size was spot on.

Anonymous

Mar 10, 2026

Rating: 5/5

Reliable industrial component

We use these regularly in our maintenance shop. The SF-1 type is standard for us now. Consistent quality and the PTFE layer ensures long life even in dry conditions.

Anonymous

Mar 03, 2026

Rating: 5/5

Excellent oil-free performance

Needed an oil-free solution for a food processing conveyor modification. These bushings are perfect. No contamination risk and they handle the load well.

5 FAQ

Q: What is the maximum shaft speed recommended for this 30mm bearing?

A: For a 30mm inner diameter SF-1 bearing, the maximum recommended sliding speed is typically around 2.5 m/s under moderate load. Higher speeds may require additional cooling or lubrication.

Q: Is this bearing suitable for underwater applications?

A: While the SF-1 material is corrosion-resistant to some degree, it is primarily designed for dry or intermittent lubrication environments. For continuous submerged use, we recommend stainless steel variants or specific marine-grade bushings.

Q: What is the lead time for bulk orders of 500 units?

A: For orders over 100 units, please contact our sales department directly. Standard stock items usually ship within 2-3 business days, but bulk quantities may take 1-2 weeks depending on current inventory levels.

Q: Can this replace a standard bronze bushing directly?

A: In many cases, yes, provided the dimensions match. However, SF-1 composite bearings often allow for thinner wall sections due to higher load capacity, so please verify your housing constraints before swapping.

Q: Do I need to ream the hole after pressing this in?

A: Yes, it is standard practice to ream or hone the bore after press-fitting self-lubricating bushings to account for any compression of the liner and ensure the correct final clearance for the shaft.

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