DJA MOND bimetallic bushings
BJ.. Series – Steel/Bronze Alloy ISO 3547
- ISO 3547 Standard
- High load capacity
- Up to 260°C
Bimetallic bushings are three-layer steel and bronze plain bearings (steel backing and sintered bronze sliding layer) manufactured according to ISO 3547, designed for high sliding speeds and operating temperatures up to 260°C. DJA MOND BJ.. bimetallic bushings combine high load capacity with excellent heat dissipation, making them particularly suitable for the automotive industry and for the manufacture of engines, pumps, compressors and agricultural machinery. Compared with other relubricable bushings (POM multilayer, case-hardened or rolled bronze solutions), bimetallic bushings are the preferred choice when high sliding speeds and high-temperature resistance are required.
Manufactured according to ISO 3547, BJ.. bimetallic bushings offer a maximum static load capacity C₀ up to 150 N/mm², depending on the alloy (BJ800: 150; BJ720: 130; BJ700: 120; BJ20: 100 N/mm²) and a maximum dynamic load capacity C of 65 N/mm². The bronze sliding layer has a hardness of 70–100 HB and a maximum operating temperature of 260°C.
Performances
Design and performance features
Three functional layers
Sintered bronze powder layer, providing good wear resistance and excellent load-carrying performance; steel backing, ensuring high load capacity and efficient heat dissipation; optional 0.002 mm copper plating for improved corrosion resistance.
High sliding speeds
The steel/bronze bimetallic alloy enables high sliding speeds while maintaining reliable performance.
High load capacity
C₀: BJ800 150, BJ720 130, BJ700 120, BJ20 100 N/mm² and C max 65 N/mm², with a bronze sliding layer hardness of 70–100 HB.
Temperature
Bimetallic bushings are suitable for high-temperature operating conditions, making them ideal for demanding automotive and industrial applications.
Mounting
Installation of bimetallic bushings
BJ.. bushings must be installed in an H7 housing with an f7 shaft. After installation, the bushing bore tolerance will be H8.
Mounting methods
- Press-fit installation in H7 housingCheck that the shaft complies with the f7 tolerance before bushing insertion.
- Verification of bore tolerance after installationOnce mounted, the bore will have an H8 tolerance: verify the resulting operating clearance.
Technical data
- Housing
- H7
- Shaft
- f7
- Post-mounting bore
- H8
Applications
Applications
Components and application support for every industrial environment.
Automotive / Motorcycles, Trucks & Buses
Petrol and diesel engines, gearboxes and reduction units, heavy-duty leaf springs and stabilizer systems, where high sliding speeds are essential for reliable performance.
Agriculture
Agricultural machinery and lifting equipment with high load requirements.
Construction Equipment
Pumps and compressors for construction and material handling machinery, where high load capacity and efficient heat dissipation are essential requirements
Industrial automation
Industrial air conditioning systems and applications requiring operating temperatures up to 260°C.
Hydraulic and pneumatic cylinders
Bushings, spherical plain bearings and seals for precise guidance of rods and joints, even under load.
Metal Fabrication / Machining Industry
Solutions for machine tools, machining centres, equipment and precision machining.
Renewable Energy
Bearings and motion systems for wind power, solar installations and long-lasting energy technologies.Technical documents
Contacts
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