HZ803 Copper-plated smooth plate bimetallic composite bearing Suppliers, Company

HZ803 Copper-plated smooth plate bimetallic composite bearing

The HZ803 Copper-Plated Bimetal Composite Bearing features a dual-layer design with a hardened steel backing and a copper-plated surface, optimized for high-load, high-speed applications. The electroplated copper layer improves thermal conductivity and corrosion resistance, while the steel base ensures structural rigidity and impact resistance. Its smooth, untextured "light plate" finish reduces friction during initial operation and maintains stable performance under continuous use.

Ideal for electrical motors, hydraulic pumps, and automotive steering systems, the HZ803 operates effectively in both lubricated and semi-lubricated environments. The copper plating enhances compatibility with mating surfaces, minimizing wear and extending component lifespan. Resistant to deformation under extreme pressures, this bearing is suited for equipment exposed to shock loads, vibrations, or fluctuating temperatures.

Material Features

Steel-backed lead bronze-lined bearing material for lubricated applications, high load capacity and good fatigue properties, have been widely used in automotive, common industrial-like steering gear,power steering, pedal bushes,king-pin bushes,tallgate pivots, mechanical handling, lifting equipment, hydraulic motors, agricultural machines etc.

Specieications for HZ Steel-Lead Bronze alloys

Material Type	HZ800	HZ720	HZ700	Pb-free HZJ20	Pb-free HZ930
Specification of Bronze	CuPb10Sn10	CuPb24Sn4	CuPb30	AISn20Cu	CuSn6.5P0.1
Equivalent Code	AmericaSAE-797 GermanyGLYCO66 JapanJIS-LBC3 USA SAE-797 GERMANY GL-YCO66 JAPAN JIS-LBC3	AmericaSAE-799 GermanyGLYCO68 JapanJIS-LBC6 USA SAE-799 GERMANY GL-YCO68 JAPAN JIS-LBC3	AmericaSAE-48 JapanJIS-KJ3 USA SAE-48 JAPAN JIS-KJ3	AmericaSAE-783 GermanyGLYCO74 JapanJIS-AJL USA SAE-783 GERMANY GL-YCO74 JAPAN JIS-AJL
Hardness of Bronze alloy HB	70-100	45-70	30-45	30-40	60-90
Allowable Max Dynamic Load N/mm²	65	38	25	30	65
Harhness of mating surface	53HRC	50HRC	270HB	250HB	50HRC
Max.Temperature ℃	260	C	170	150	200
Application Characteristics	The strongest stype, wide application field, most suitable for high-impact vibrating load bushes and washers.	Relative high fatige strengh&load capaity, good sliding performance, poor oil corrosion resistance. Fit for middle load, middle speed. Normally applied in mainbushes of inner-combushtion engine, connecting rod when plated.	Good seizuring resistance, good capacity to submerge foreign, objects. Normally applied in main bearings of high speed. Low to morderate load inner-combustion engine &connecting rod bearing.	Moderate fatige strenth &load capacity good corrosion resistance, relative in half bushs of hlgh speed, low load inner combustion engine, aircompressor, refrigerator bearings,	The HZ930 bearing is a kind of product without lead, Relative high fatige strengh&load capaity, good sliding performance, whose application industry is gradually being expanded.