Overview
The inner eccentric bushing is a lead bronze sleeve pressed or shrink-fitted into the inner bore of the eccentric sleeve in a Symons cone crusher. It provides the primary bearing surface for the main shaft as it rotates and gyrates within the eccentric assembly, absorbing both radial and axial loads during crushing operation.
Our inner eccentric bushings are centrifugally cast from ZCuPb20Sn5 / ZCuPb15Sn7 lead bronze , which offers superior wear resistance, excellent load-bearing capacity and low friction characteristics. The inner diameter is CNC-machined and honed to a precise surface finish for optimal oil film formation.
Quality & Application
Each bushing passes full dimension inspection on inner diameter, outer diameter, length and surface roughness before shipment. Anti-rust oil is applied for protection during storage and ocean freight.
Standard inner eccentric bushings are stocked for all common Symons spring cone crusher sizes. Custom dimensions and bronze alloy specifications are available for non-standard crusher configurations. Regular inspection and replacement of worn bushings is critical for preventing main shaft damage and maintaining crusher alignment in mining and quarry operations.
Key Features
- Premium Lead Bronze: ZCuPb20Sn5 / ZCuPb15Sn7 lead bronze offers excellent wear resistance and low friction under heavy loads.
- Low-Friction Operation: Bronze bearing surface reduces friction and heat generation during shaft gyration.
- Precision Honed Bore: CNC-machined and honed inner diameter ensures precise clearance with the main shaft.
- Protects Main Shaft: Sacrificial wear layer prevents damage to the expensive main shaft, reducing repair cost.
- OEM Interchangeable: Fully interchangeable with original Symons cone crusher inner eccentric bushing dimensions.
- Custom Sizes: Custom inner/outer diameter and length to match your specific crusher model.
Compatible Machines
Fits Symons Cone Crusher (2ft / 3ft / 4.25ft); Symons Cone Crusher (5.5ft / 7ft); Spring Cone Crushers (Custom Fit Available).
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