Rolled Bronze Bushings
High-density CuSn8 wrapped bronze bearings designed for heavy loads and harsh environments. The cost-effective, thin-wall alternative to solid cast bronze bushings.
What is a Rolled Bronze Bushing?
Rolled bronze bushings (often referred to as Wrapped Bronze Bearings or FB090 series) are thin-walled plain bearings made from high-density bronze strips. Unlike traditional cast bronze bushings, they are manufactured through a rolling process that ensures uniform wall thickness and superior material density.
Designed for high-load, low-speed applications, these bushings feature specially indented lubrication pockets (diamond or round oil sockets) on the sliding surface. This design serves as a lubricant reservoir, significantly extending service intervals and reducing friction in initial startup conditions.
Common Industry Synonyms
High Load Capacity
Cold-rolled material structure offers higher hardness and load-bearing strength than cast bronze.
Cost Effective
Thin-wall design reduces material usage and weight while maintaining performance, ideal for mass production.
Material Grades
We manufacture rolled bronze bushings primarily in two material standards to suit different environmental and mechanical requirements.
CuSn8P
DIN 17662 / CW453KThe industry standard for wrapped bronze bearings. A tin-bronze alloy offering excellent wear resistance, high fatigue strength, and good corrosion resistance.
- Composition: Cu Rem, Sn 8.0%, P <0.4%
- Hardness: HB 110-150
- Best For: Construction machinery, agricultural equipment.
CuSn6.5P
CW452KA slightly softer alloy with higher elasticity. Often used where better formability or slightly different magnetic properties are required.
- Composition: Cu Rem, Sn 6.5%, P 0.1%
- Hardness: HB 90-120
- Best For: Electrical components, lower load bushings.
Surface Structure Options
Diamond Oil Pockets
The most common type. Diamond-shaped indentations store grease effectively, providing long-term lubrication for general applications.
Round Oil Holes
Perforated holes allow for greater lubricant capacity or oil circulation. Ideal for applications with frequent relubrication.
Plain Surface
Smooth surface without pockets. Used in low-load applications or where fluid hydrodynamic lubrication is maintained.
Technical Data
| Property | Value | Unit |
|---|---|---|
| Max. Dynamic Load | 40 | N/mm² |
| Max. Static Load | 120 | N/mm² |
| Max. Sliding Speed | 2.5 | m/s |
| Max. PV Value (Grease) | 2.8 | N/mm² · m/s |
| Tensile Strength | > 450 | N/mm² |
| Yield Point | > 250 | N/mm² |
| Operating Temperature | -100 to +200 | °C |
| Thermal Conductivity | 58 | W/m·K |
* Data based on standard CuSn8 material with grease lubrication.
Why Source Wrapped Bronze from FESODA?
High-Precision Rolling
Our advanced rolling lines ensure wall thickness tolerance within ±0.01mm, ensuring perfect interference fit in your housing.
Custom Geometries
Beyond standard cylindrical shapes, we manufacture flanged bushings, thrust washers, and special slide plates based on your drawings.
OEM & Bulk Supply
Optimized for B2B. We support scheduled deliveries for mass production lines (Automotive, Agriculture, Hydraulics).
Request a Quote
Direct factory pricing for bulk orders and OEM projects. Please provide size specifications (ID x OD x L) or drawings.