SOLID-SELF-LUBRICATION BUSHES-JSP WEAR PLATE

Working Principle and Features

The core of JSP self-lubricating bearings lies in the pre-designed holes or grooves embedded in a high-strength brass base (common grades such as CuZn25A16Fe3Mn3 or CuZn24AL6) with solid lubricants such as graphite, molybdenum disulfide (MoS2), or PTFE.

Its working principle is as follows: During friction, the base bears most of the load, and the embedded solid lubricant transfers to the friction surface, forming a firmly adhered solid lubricating film, thereby reducing friction and wear. With use, the embedded lubricant continuously replenishes the friction surface, achieving long-term self-lubrication.

Key features include:

Self-lubricating and impact-resistant: Can operate in oil-free or difficult-to-form-oil-film conditions. The high hardness of the base copper alloy (HB210-270 or higher) provides superior impact and wear resistance compared to ordinary copper bushings.

Wide operating temperature range: Generally suitable for environments from -40℃ to +300℃, some products can reach 400℃ for short periods.

Corrosion and chemical resistance: Resistant to water or acid corrosion.

Protecting the Shaft from Wear: The formed solid transfer film effectively reduces shaft wear.

Main Performance Parameters

Item	Typical Parameters/Description
Base Material	High-strength brass(e.g., CuZn25A16Fe3Mn3, CuZn24AL6)
Base Hardness	HB 210-270 or HB 230-270
Ultimate Dynamic Load Approx.	100 N/mm²
Coefficient of Friction	< 0.16
Maximum Operating Temperature	300℃ (Some sources mention short-term up to 400℃)
Maximum Sliding Speed	Dry friction 0.4 m/s, oil lubrication 5 m/s
Applicable Operating Conditions	Heavy load, low speed, reciprocating or oscillating motion

JSP Wear plate standard meric size

product-537-408 product-322-325 product-332-328

Unit:mm

Standard No.	W	L	A	B	C	D	E	Flat Head Screw Size	Q'ty of holes
JSP-1875	18	75	15	45				M6	2
JSP-18100		100	25	50
JSP-18125		125		75
JSP-18150		150		100
JSP-2875	28	75	15	45
JSP-28100		100	25	50
JSP-28125		125		75
JSP-28150		150		100
JSP-35100	35	100	20	60				M6
JSP-35150		150		55	55				3
JSP-35200		200		70	50	55			4
JSP-35250		250		70	70	70			4
JSP-35300		300		65	65	65	65		5
JSP-35350		350		80	75	75	80		5
JSP-3875	38	75	15	45				M6	2
JSP-38100		100	25	50
JSP-38125		125		75
JSP-38150		150		100
JSP-4875	48	75	15	45
JSP-48100		100	25	50
JSP-48125		125		75
JSP-48150		150		100
JSP-50100	50	100	20	60				M8
JSP-50150		150		55	55				3
JSP-50200		200		55	50	55			4
JSP-50250		250		70	70	70			4
JSP-50300		300		65	65	65	65		5
JSP-50400		400		90	90	90	90		5
JSP-75150	75	150		110					4
JSP-75200		200		80	80				6
JSP-75250		250		105	105				6
JSP-75300		300		85	90	85			8
JSP-75400		400		120	120	120			8
JSP-75500		500		115	115	115	115		10

Typical Application Areas

JSP self-lubricating bearings are widely used in the following fields due to their excellent properties:

🏭Metallurgical Equipment: Continuous casting machines, rolling mill equipment.

🏭Heavy Machinery: Mining machinery, large metal extrusion equipment.

🏭Transportation: Train supports, ships.

🏭Construction Machinery: Hydraulic engineering equipment (e.g., arched gates), bridge supports.

🏭Industrial Molds: Automotive body panel molds, guide plates for stamping dies.

🏭Others: Steam turbines, injection molding machinery, etc.

💎 Selection and Usage Tips

Selection Reference: The model number of a JSP self-lubricating bearing (e.g., JSP 30-50-10) usually reflects its basic dimensions (e.g., inner diameter, outer diameter, thickness). Specific dimensions and structures such as oil grooves and oil holes can be customized according to user drawings.

Installation Points:

The surface roughness of the mounting base is recommended to be less than Ra 3.2μm.

The surface roughness of the guide rail surface that rubs against the bearing is recommended to be less than Ra 1.6μm. If oil grooves or oil holes are required, be sure to remove burrs.

Advantages Summary: JSP bearings are maintenance-free, have a long service life, can adapt to harsh working conditions (high temperature, dust, lack of lubrication, etc.), and do not wear on the grinding shaft.

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SOLID-SELF-LUBRICATION BUSHES-JSP WEAR PLATE