JBM-20
Steel Bronze Powder with POM
Features & Benefits
The JBM-20 is engineered for marginally lubricated applications involving rotating or oscillating movements. Its acetal copolymer (POM) lining allows for extended re-lubrication intervals, significantly reducing maintenance requirements. The material exhibits excellent damping properties and is highly resistant to shock loads and edge loading misalignment. Furthermore, it absorbs practically no water, ensuring dimensional stability and no swelling even in humid environments. It is recommended to pre-lubricate the bearing upon assembly.
Structure
| Layer | Material | Thickness | Function |
|---|---|---|---|
| 1 | POM (Polyoxymethylene) | 0.30~0.50mm | Provides high wear resistance and low friction. The surface features a pattern of circular indents (lubrication pockets) designed to retain grease, ensuring performance even with minimal lubricant supply. |
| 2 | Sintered bronze powder | 0.20-0.35mm | Ensures maximum thermal conductivity away from the bearing surface and serves as a mechanical anchor for the POM resin layer. |
| 3 | Low-carbon steel | Base | Delivers exceptionally high load-carrying capacity and excellent heat dissipation. |
Technical Data
max load
- static 250 N/mm²
- very low speed 140 N/mm²
- rotating oscillating 70 N/mm²
max pv
temperature limit
friction coefficient
max speed
- pre lubricated 2 m/s
- continuous oiling grease >2 m/s
thermal conductivity
coefficient of thermal expansion
Typical Applications
Automotive
Extensively used in heavy-duty chassis components such as suspension joints, kingpin assemblies, stub axles, steering linkages, and rear chassis hinges.
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Agricultural Machinery
Ideal for robust machinery including harvester pivots, bale trips, wheel caster swivels, and front axle pivot bearings.
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Mining & Quarrying
Machine tool applications such as spindles in drilling, grinding, and milling machines, as well as ram guide plates in multi-ram presses.
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