Description
What is a Cone Crusher Eccentric Bushing?
An Eccentric Bushing is a high-precision, heavy-duty sleeve bearing positioned strictly inside the crusher’s eccentric assembly. Its critical function is to securely support the main shaft and guide the high-speed gyratory motion of the crushing head. By providing a perfect rotational interface and maintaining a crucial oil film clearance, a premium Eccentric Bushing minimizes structural metal-to-metal friction, converting raw motor power into efficient compressive force while protecting the main shaft from severe scoring during continuous aggregate reduction.
Equipment Compatibility & OEM Cross-Reference
Our aftermarket replacement Eccentric Bushing parts are precision-engineered to be direct-fit upgrades for Metso crushers, significantly lowering your Total Cost of Ownership (TCO) while ensuring maximum field uptime and zero installation issues.
| Supported Brands | Applicable Crusher Series | Common OEM Part Numbers |
| Racines | Nordberg HP Series: HP100, HP200, HP300, HP400, HP500, HP800, HP4, HP6 | 7015655250, 1022072951, 1022073307, 1022074069, 1022074809, 1022075464 (Matches standard OEM specifications) |
Core Engineering & Technical Advantages
Because the eccentric assembly operates under immense multi-directional crushing forces, standard bearings can suffer from rapid wear or deformation. Our premium Eccentric Bushing replacements are manufactured for superior longevity:
Premium Leaded Bronze Alloys: Cast from high-grade C93800 and C93700 bronze alloys to deliver exceptional anti-friction properties and outstanding wear resistance under maximum load conditions.
Precision CNC Machining: Guarantees an exact dimensional bore fit, ensuring seamless on-site replacement alignment and maintaining the perfect hydraulic lubrication clearance.
High Load Capacity: Engineered to prevent physical bushing deformation and handle severe kinetic spikes during choke-feeding aggregate surges.
Vibration Suppression: Optimizes mechanical tolerances between the main shaft and eccentric, securing a highly stable crushing circuit and extending the life of adjacent drive train components.
Maintenance Guidelines: When to Replace Your Eccentric Bushing
Operating with a worn sleeve bearing will destroy your main shaft and contaminate the lubrication system. We recommend checking the oil quality every 200 hours and inspecting the Eccentric Bushing during routine teardowns:
| Inspection Focus | Warning Signs (Replace Immediately) | Best Practice Solution |
| Clearance & Wear | Excessive physical clearance detected between the main shaft and the bushing bore. | Replace the Eccentric Bushing to restore proper operational tolerances and prevent shaft wobbling. |
| Surface Scoring | Deep scratches, flaking, or heavy scoring marks on the inner bronze surface. | Swap the bushing. Check your oil filtration system immediately, as this indicates fine dust or metal contamination. |
| Oil Pressure Drops | Unexplained low oil pressure or rapid fluid overheating during standard crushing operations. | Inspect the bearing interface. Worn bushings fail to hold the protective oil film, causing friction and heat. Replace if worn. |
Explore More Crusher Drive & Wear Components
To maintain peak aggregate throughput, ensure your maintenance inventory is stocked with fully compatible, premium spare parts. Browse our specific component categories:
Find precision-machined Countershaft Pinions and Main Shafts for complete HP series rebuilds.
Explore our robust aftermarket spares for Sandvik CH & CS Series Crushers.
View high-performance replacement Eccentric Assemblies and Drive Gears for Metso HP Series Cone Crushers.
