Bronze Wrapped Bearings

JBM-090

Bronze Wrapped Bearings with Oil Pockets

PRODUCT OVERVIEW

Features & Benefits

The JBM-090 is a high-performance wrapped bearing crafted from cold-formed homogenous bronze (CuSn8). It is distinguished by its diamond-shaped surface indentations, which act as effective lubricant reservoirs to ensure smooth operation and reduced friction. This bearing offers high load-carrying capacity, excellent chemical resistance, and superior thermal conductivity. Its compact, thin-wall design minimizes overall assembly dimensions, and the inner diameter remains machinable post-installation for precision fitting. It is designed for easy fitting and efficient lubrication.

MATERIAL COMPOSITION

Structure

Layer	Material	Thickness	Function
	Homogenous Bronze (CuSn8)	Wrapped cold formed	A solid, cold-formed bronze structure offering exceptional mechanical properties. The surface features diamond-shaped lubrication indents that serve as oil reservoirs, allowing for the rapid formation of a lubrication film to reduce start-up friction.

SPECIFICATIONS

Technical Data

chemical composition

Cu 91.3%
Sn 8.5%
P 0.2%
Pb N/A
Zn N/A

max load

static 120 N/mm²
dynamic 40 N/mm²

max speed lubricated

2 m/s

max pv

2.8 N/mm²*m/s

tensile strength

450 N/mm²

hardness

HB 110-150

elongation

40%

temperature limit

-100℃ ~ +200℃

friction coefficient

0.08~0.25

thermal conductivity

58 W(m*K)⁻¹

coefficient of thermal expansion

18.5*10⁻⁶*K⁻¹

WHERE IT'S USED

Typical Applications

Construction & Heavy Equipment

The JBM-090 is extensively used in hoisting machines, construction equipment, and agricultural machinery such as tractors and harvesters due to its high load capacity and durability.

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Mining & Quarrying

It is also a standard component in trucks, automobiles, machine tools, and mineral engines. The material can be fabricated into various forms including cylindrical bushes, half bearings, flanged bushes, thrust washers, and spherical bearings to suit diverse design requirements.