A
Anonymous
Apr 21, 2026
Rating: 5/5
Exact replacement
Matched old 5055 specs perfectly. Shipping was fast and packaging protected the bearings well.
Description
4044 4550 5055 SF1 Composite Bearing / Oil-Free Bushing, Wear-Resistant Self-Lubricating Oil-Impregnated Shaft Bushing, Bronze Sleeve
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Model Series | 4044, 4550, 5055 |
| Material Composition | SF1 Composite (PTFE + Bronze) |
| Lubrication Type | Self-Lubricating / Oil-Free |
| Backing Material | Low Carbon Steel |
| Operating Temperature | -40°C to +110°C |
| Max Static Load | 250 N/mm² |
| Coefficient of Friction | 0.03 - 0.05 (Dynamic) |
| Surface Treatment | Copper Plated / Oil Impregnated |
| Hardness Rating | HB 40 - 60 |
| Industry Standard | ISO 3547 / DIN 1494 Compliant |
5 reviews
A
Anonymous
Mar 19, 2026
Rating: 5/5
Durable material
Withstands high vibration environments well. We use these in manufacturing equipment and haven't had a failure yet.
A
Anonymous
Mar 11, 2026
Rating: 5/5
Great for heavy machinery
Installed these on an excavator arm linkage. They fit perfectly and the self-lubricating feature is a huge plus for maintenance schedules.
A
Anonymous
Feb 22, 2026
Rating: 4/5
Good fitment
Slightly tight initially but settled in after a few cycles. Quality feels solid for the price point.
A
Anonymous
Feb 02, 2026
Rating: 5/5
No more greasing
Saves so much time during quarterly inspections. The wear resistance seems excellent compared to standard bronze bushings.
5 FAQ
Q: Is this suitable for underwater use?
A: Yes, the composite material is resistant to corrosion and suitable for submerged applications within the temperature range.
Q: Are these metric or imperial?
A: These are metric dimensions conforming to ISO standards. Conversion charts are available in the product manual.
Q: Can these handle high speeds?
A: These are recommended for low to medium speed oscillating or rotating applications. High speed may generate excess heat.
Q: What is the wall thickness tolerance?
A: Typically +/- 0.03mm depending on the specific size series. Please refer to the technical datasheet for exact tolerances.
Q: Do you offer bulk discounts?
A: Yes, contact our sales department directly for pricing on orders exceeding 100 units.
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