Bronze Bearing Shell for Crushers & Heavy Equipment

Bronze bearing shells carry the radial load between a rotating shaft and its housing, and in mining and heavy equipment they are usually the part that decides how long a rebuild interval lasts. Haishan casts and machines these shells to your drawing or to a worn sample, matching the original alloy grade so the shell seats, oil grooves and wall thickness fit the assembly without field adjustment.

Design and materials

Shell geometry, split-line position, oil groove layout and clearance are produced to your drawing rather than to a generic catalogue size. Alloy selection follows the duty: tin bronze such as C93200 (SAE 660) for moderate load and general service, C93700 where dirt or grit is present, C90700 for higher tin content and better fatigue resistance, and aluminium bronze C95400 or C95800 where shock loading and abrasion dominate. Manganese bronze C86300 is used for high-strength shells and wear plates. All grades are melted in our own furnaces, so a specified grade can be reproduced on repeat orders.

Typical applications

• Cone and jaw crusher eccentric and frame bearing shells
• Ball and SAG mill trunnion and pinion bearing shells
• Pump, gearbox and hydraulic cylinder bearing shells
• Construction machinery pivot and boom bearing shells
• Bulk conveyor and stacker-reclaimer shaft bearings

Manufacturing and inspection

We choose between centrifugal, sand and metal mold casting according to shell size, wall thickness and quantity; centrifugal casting gives a denser structure than sand casting for cylindrical sections. Machining, boring and grooving are completed in-house on CNC equipment, and each batch is checked by spectrometer composition analysis and hardness testing before shipment. More detail on the processes is available on our centrifugal casting page and quality control page.

Send your drawing or a worn sample for a free evaluation.