Non lubricated bearings
Non lubricated bearings
Discover our plain bearings: Flange bearings, sleeve bushings, and thrust washers. Customizable bushing materials available. Our products are wear-resistant, maintenance-free, and designed to withstand dirt, dust, and corrosion.
Lead Free boundary lubrication bearing ROHS. It can be applied to the field where non-lead is required. Now its wldely used in textile machines,auto operating parts and other middle speed, middle load and grease lubrication occasions.
A Powerful Force: Self-Lubrication Bearing Bushing to Customers Around the World.
bushing is is filled POM modified polyethylene resin for the inner surface of the layer, three layers composite self-lubricating materials, POM-lined composite bush bushing is a positive boundary lubricating materials, so especially suitable for high load of the rotating swing load movement and often difficult to open and close and the formation of hydrodynamic lubrication of bearings, thrust washers, slide, ball seat and other friction parts.
Material Structure
- POM 0.03-0.50mm, anti abrasion, low friction coefficient even no oil given. The inside of the bearing are full of indentions, which need to be filled with grease before installing.
- Sintered Bronze powder layer, 0.2-0.35mm, high load capacity and anti-abrasion, good thermal conductivity, which also further strengthen the combination of the POM layer and steel plate.
- Low carbon steel backing, which improved, load capacity & thermal conductivity.
- Copper/Tin plating layer, 0.002mm, anti-corrosion.
Structure And Composition
Characteristics
- maintenance-free operation
- very good frictional properties
- high load capacity
- high sliding velocity
- small operating clearance
- Long service intervals
- Low friction coefficient
- Wide range of use
- Long lifetime
Type of application
- Hydraulic cranes
- Hydraulic cylinders
- Agriculture machines
- Hoisting equipment
Design
- Cylindrical bearings
- Flanged bearings
- Thrust washers
- Plates
- Drawing details
Technical information and standard dimensions on the data sheet.
Why choose POM bearing?
- Maintenance-free operation
- No lubrication required (PTFE composite)
- Initial lubrication required (POM composite)
- Minimum wall thickness, minimum space requirements
- Accommodation of heavy loads
- Wide range of temperatures
- Good sliding properties
- Virtually no stick-slip
- High wear resistance
- Less sensitive to edge loading (POM composite)
- No machining required.
| OPERATING PERFORMANCE | |
| Dry | Poor |
| Oil lubricated | Good |
| Grease lubricated | Very Good |
| Water lubricated | Poor |
| Process fluid lubricated | Poor |
Bearing Properties
| GENERAL | Unit | Value | |
| Maximum load, p | Static
Dynamic |
N/mm2
N/mm2 |
140
140 |
| Operating temperature | Min
Max |
°C
°C |
– 40
130 |
| Coefficient of linear thermal expansion | Parallel to the surface | 10-6/K | 11 |
| Normal to the surface | 10-6/K | 29 |
| GREASE LUBRICATED | |||
| Maximum sliding speed, U | m/s | 2.5 | |
| Maximum pU factor | N/mm2 x m/s | 2.8 | |
| Coefficient of friction | 0.06 – 0.12 |
| RECOMMENDATIONS | |||
| Shaft surface roughness, Ra | µm | ≤ 0.4 | |
| Shaft surface hardness | Normal
For longer service life |
HB
HB |
> 200
> 350 |
Technical Datas
| Max Load | Static load | 250N/mm2 | Operation Temp. | -40℃~＋110℃ | ||
|---|---|---|---|---|---|---|
| Low-speed Rotation | 140N/mm2 | max linear velocity | Pre-lubricated | 2m/s | ||
| Rotation、Oscillation | 70N/mm2 | Continuous supplying oil | >2m/s | |||
| Max PV | 3N/mm2．m/s | Thermal conductivity | 42W(m．K)-1 | |||
| Coefficient of thermal expansion | 11×10-6/K | Friction coefficient | 0.05~0.20 | |||
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Plain Bearings in Various Industries
