Metal-Polymer Composite Bearings

JBM-50MP

Steel Bronze Powder with PTFE/Fluoropolymer

PRODUCT OVERVIEW

Features & Benefits

The JBM-50MP is specifically engineered for applications demanding precise dimensional control. Its thickened PTFE/Fluoropolymer sliding layer is designed to be machinable after assembly, allowing for the achievement of extremely tight tolerances without compromising the bearing's low-friction properties. Furthermore, the material matrix incorporates specialized high-temperature additives, ensuring reliable operation and durability even under elevated thermal conditions.

MATERIAL COMPOSITION

Structure

Layer	Material	Thickness	Function
1	PTFE/Fluoropolymer mixture	0.05~0.10mm	Provides dry bearing performance with a machinable layer designed to achieve tight tolerances post-assembly.
2	Sintered bronze powder	0.20-0.35mm	Ensures maximum thermal conductivity away from the bearing surface and serves as a reservoir for the PTFE layer.
3	Low-carbon steel	Base	Delivers exceptionally high load-carrying capacity and excellent heat dissipation.

SPECIFICATIONS

Technical Data

max load

static 250 N/mm²
very low speed 140 N/mm²
rotating oscillating 60 N/mm²

max pv dry running

short term operation 3.6 N/mm²*m/s
continuous operation 1.8 N/mm²*m/s

temperature limit

-195℃ ~ +280℃

friction coefficient

0.03~0.20

max speed

dry running 2 m/s
hydrodynamic operation >2 m/s

thermal conductivity

42 W(m*K)⁻¹

coefficient of thermal expansion

11*10⁻⁶*K⁻¹

WHERE IT'S USED

Typical Applications

E-Mobility

Thanks to its machinable thick PTFE structure, the JBM-50MP is ideal for precision components such as belt tensioners, idler pulleys, magnetic valves, compressors, and pumps.

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