Metal-Polymer Composite Bearings

JBM-25

Aluminum Alloy with PTFE Tape

PRODUCT OVERVIEW

Features & Benefits

The JBM-25 distinguishes itself with an aluminum alloy backing, offering a significant weight reduction that facilitates easier handling and installation. Engineered for dry-running environments, it exhibits a low coefficient of friction, minimal wear, and superior sliding characteristics. The bearing generates a transfer film that protects mating metal surfaces and is highly versatile, supporting rotary, linear, and oscillating movements.

MATERIAL COMPOSITION

Structure

Layer	Material	Thickness	Function
1	PTFE tape	-	A very thick PTFE layer that effectively isolates noise and allows for the design of clearance-free applications.
2	Aluminum alloy backing	Base	Provides exceptionally high load-carrying capacity, excellent heat dissipation, and a lightweight structural solution.

SPECIFICATIONS

Technical Data

max load

static 80 N/mm²
very low speed 40 N/mm²
rotating oscillating 20 N/mm²

max pv dry running

short term operation 2.8 N/mm²*m/s
continuous operation 1.8 N/mm²*m/s

temperature limit

-65℃ ~ +260℃

friction coefficient

0.05~0.20

max speed

dry running 1 m/s
hydrodynamic operation >1 m/s

thermal conductivity

230 W(m*K)⁻¹

coefficient of thermal expansion

24*10⁻⁶*K⁻¹

WHERE IT'S USED

Typical Applications

Recreation & Sports

Leveraging its lightweight aluminum construction, the JBM-25 is the ideal solution for applications where weight reduction is critical. It is widely employed in office automation (OA) systems, fitness equipment, bicycles, and motorcycles.

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General Industrial

Due to its clean and corrosion-resistant nature, it is also frequently used in food processing and packaging machinery.