Metal-Polymer Composite Bearings

JBM-80

Steel Bronze Powder with PEEK/PTFE

PRODUCT OVERVIEW

Features & Benefits

The JBM-80 is engineered for maintenance-free operation, demonstrating exceptional performance even without continuous lubrication under light-duty and low-speed conditions. Distinguished by its high PV capability at elevated temperatures, it operates effectively within a broad thermal range of -150℃ to +250℃. The material exhibits robust chemical resistance, zero water absorption, and high static and dynamic load capacities, making it suitable for a wide array of movements including rotating, oscillating, reciprocating, and sliding.

MATERIAL COMPOSITION

Structure

Layer	Material	Thickness	Function
1	PEEK+PTFE mixture	0.30~0.50mm	Provides high wear resistance and low friction even with minute quantities of lubricant. The surface features a pattern of circular indents designed to be filled with grease upon assembly.
2	Sintered bronze layer	0.20~0.35mm	Ensures maximum thermal conductivity away from the bearing surface and serves as a mechanical anchor for the PEEK/PTFE mixture.
3	Steel backing	Base	Provides superior mechanical strength and exceptionally high load-carrying capacity.

SPECIFICATIONS

Technical Data

max load

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

max pv

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

temperature limit

-150℃ ~ +250℃

friction coefficient

0.08~0.15

max speed

pre lubricated 2 m/s
continuous oiling grease >2 m/s

thermal conductivity

50 W(m*K)⁻¹

coefficient of thermal expansion

11*10⁻⁶*K⁻¹

WHERE IT'S USED

Typical Applications

Automotive

The JBM-80 is widely utilized in high-performance hydraulic and mechanical systems, including gear pumps, ABS braking systems, piston pumps, and gear motors.

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Construction & Heavy Equipment

It is also a preferred solution for machine tools and agricultural machinery where durability under thermal stress is required. Initial pre-lubrication at assembly is recommended to optimize service life.