Dalian Jinyu Huayang Industry specializes in R&D, production and global sales of medium & extra-large industrial bearings. Our WJY Bearing brand products are fully manufactured at our professional production base in Wafangdian. Centered on precision backing bearings, we deliver durable, high-load bearing solutions for worldwide heavy industries. Browse our full backing bearings collection to see detailed specs and models. Certified with ISO 9001, we enforce full-process quality control to serve mining, construction, metallurgy and heavy-duty mechanical equipment fields.
Superior Material Selection & Long Service Lifespan
All WJY Backing Bearings are fabricated from premium carburized steel G20Cr2Ni4A at our Wafangdian factory via professional heat treatment. The ≥2.0mm deep carburized layer achieves surface hardness HRC60–64 and core hardness HRC30–40, delivering outstanding abrasion resistance and structural toughness to cope with continuous heavy-load and severe working conditions.
P4-Grade Precision Machining Performance
Equipped with advanced CNC machining and precision grinding equipment in our Wafangdian production workshop, Dalian Jinyu Huayang produces WJY backing bearings up to ISO P4 / ABEC 9 precision standard:
- Dimensional tolerance controlled within ±2μm
- Roundness error ≤0.5μm
- Cylindricity error ≤1μm
- Surface roughness Ra ≤0.025μm
High-precision structural design optimizes internal load distribution, cuts equipment friction loss by up to 30% and effectively lowers long-term operational costs for end users.
Wide Application Scenarios of WJY Backing Bearings
As core factory-made product of Dalian Jinyu Huayang Industry, WJY backing bearings perform reliably across diversified heavy industrial sectors under extreme load and abrasive environments:
1. Metal Processing & Steel Industry
- Rolling Mills: Hot/cold rolling mills and continuous production lines for steel sheet forming.
- Steelmaking Equipment: Ladle turrets, high-temperature conveying and furnace auxiliary machinery.
- Mill Auxiliary Gear & Coiling Units: Straightener and recoiling machine heavy-load supporting parts.
2. Mining & Quarrying
- Mining Processing Gear: Crushers, ball mills and bulk material conveyor systems.
- Drilling & Excavation Equipment: Open-pit and underground mining rotary drill bearing assemblies.
3. Construction & Heavy Engineering
- Earthmoving Machinery: Excavators, bulldozers and large wheel loaders.
- Port & Tower Cranes: Heavy hoisting and slewing bearing components.
4. Power Generation Industry
- Wind & Hydro Turbines: Main gearbox and auxiliary generator supporting bearings.
- Thermal Power Auxiliary Equipment: Heavy-duty reducer and transmission parts.
5. General Industrial Machinery
- Paper & Pulp Equipment: Large press rollers and calender roller supports.
- Plastic & Rubber Extruders: High-load main shaft bearing assemblies.
Full-Set Factory Quality Inspection
Every WJY backing bearing finished at our Wafangdian production base goes through full-range factory inspection: dimension detection, hardness test and dynamic running performance test, with official inspection documents reserved for quality traceability. Supported by Dalian Jinyu Huayang’s ISO 9001 certified quality management system, all finished products comply with international industry standards for global bulk orders.
