Attributes

Brand	-
Category	Machinery & Equipment / Garment Processing Equipment
Origin	-
Model Number	SF1-5540
Inner Diameter	55 mm
Outer Diameter	60 mm
Length	40 mm
Material Composition	PTFE Composite with Copper Backing
Lubrication Type	Self-Lubricating (Oil-Impregnated)
Max Load Capacity	140 N/mm²
Operating Temperature	-40°C to +110°C
Friction Coefficient	0.03 - 0.20
Application Category	Garment Processing Machinery

6 reviews

Anonymous

Mar 27, 2026

Rating: 5/5

Solved our maintenance headache

In a garment factory, stopping production for lubrication is costly. These oil-free liners have extended our maintenance intervals significantly. The 55mm ID fits our shafts perfectly with minimal clearance.

Anonymous

Mar 26, 2026

Rating: 5/5

Cost-effective upgrade

Replaced worn-out parts in our sewing line conveyors. The price point is very competitive compared to imported alternatives, and the performance is identical. No complaints so far after three months of continuous use.

Anonymous

Mar 23, 2026

Rating: 4/5

Solid performance under load

Using these in heavy-duty fabric rolling equipment. They handle the radial load well without overheating. The copper sleeve provides good thermal conductivity. Would buy again.

Anonymous

Mar 23, 2026

Rating: 5/5

Great for dusty environments

Fabric lint often clogs traditional bearings. The composite material here seems to resist lint buildup better. Our pressing machines are running smoother than ever. Highly recommend for textile applications.

Anonymous

Mar 21, 2026

Rating: 4/5

Durable and quiet operation

We installed these in our high-speed embroidery machines. They run much quieter than the previous bronze bushings. Only giving 4 stars because delivery took a bit longer than expected, but the product quality is excellent.

Anonymous

Mar 04, 2026

Rating: 5/5

Perfect fit for our cutting tables

These bearings replaced the old metal sleeves on our automated fabric cutters. The self-lubricating feature is a game changer; no more grease stains on the delicate silks we process. Installation was straightforward.

5 FAQ

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

A: For orders over 200 units, our standard lead time is 7-10 business days. We can expedite this to 5 days for an additional fee if you have urgent production needs.

Q: Do I need to apply additional grease during installation?

A: No, the SF1-5540 is self-lubricating. Applying external grease can actually attract fabric dust and lint, reducing performance. Install dry and clean.

Q: Can these bearings be used in wet washing machinery?

A: While they are oil-impregnated, they are designed for dry or slightly humid environments typical in garment processing. For constant submersion in water, we recommend checking our specific marine-grade series.

Q: Is this compatible with stainless steel shafts?

A: Yes, the PTFE composite liner works excellently with hardened carbon steel and stainless steel shafts, providing low friction and minimal wear on the shaft surface.

Q: What is the tolerance range for the 55mm inner diameter?

A: The standard tolerance for the ID is H7, which ensures a precise press fit for most standard shafts used in garment equipment.

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