Wrapped bronze bearings
Long service intervals under severe operating circumstances.
Wrapped bronze bearings are ideal for applications where there are high levels of contamination. Their running surface is provided with diamond-shaped lubrication pockets or a hole pattern. The lubrication pockets must be filled with grease when the bearing is installed. The wrapped bronze bearings are produced according to the ISO 3547.
Materials
Wrapped bronze bearings are made entirely from phosphor bronze CuSn8. CuSn8 is characterized by the purity of the alloy with only a very low level of impurities. Wrapped bronze bearings are produced from strips that are subsequently wrapped and calibrated.
Lubrication
Wrapped bronze bearings must be lubricated with grease or oil on installation. A good quality lubricant is essential as it will reduce friction and wear by forming a film between the plain bearing and the shaft. For heavily contaminated applications, we recommend sealing off the bearing. This will protect both the bearing and the lubricant.
Detail overview of lubrication pockets
Advantages
The main advantages of wrapped bronze bearings include:
- Long service intervals
- Not affected by impurities
- Suitable for corrosive environments
- Suitable for impact loads and vibrations at low speeds
- Good heat dissipation
Applications
Wrapped bronze bearings are especially suited to severe operating conditions where frequent maintenance is not possible. Common applications are:
- Agricultural vehicles
- Lifting gear
- Offshore
- Excavators
Specification overview
| Properties | T90 | T92 |
| Max. load (Dyn/stat), N/mm2 | 40 / 120 | 40 / 120 |
| Max. sliding speed m/s | 2.0 | 2.5 |
| Max. PV value N/mm2 x m/s | 2.8 | 2.8 |
| Temperature range, oC | -100 / +200 | -100 / +200 |
| Shaft tolerance | e7 - f8 - h6 | e7 - f8 - h6 |
| Housing tolerance | H7 | H7 |
| Shaft roughness | Ra ≤ 0.8 | Ra ≤ 0.8 |
| Shaft hardness | > 200 HB | > 200 HB |
Download brochure
You will find everything about our range of plain bearings in THN’s plain bearing brochure. From an overview of the plain bearings, an overview of the specifications, to installation instructions and complete dimension tables.
Customer service
Are you looking for plain bearings and you want direct contact with one of our plain bearing specialists? Give us a call, we’ll be happy to help.
Call our customer services on: +31 (0)53 432 34 46