Drawing and Engineering Review
We review mating surfaces and interface dimensions and assess material, heat treatment and manufacturing feasibility.
Eccentric Bushing
Establishes and supports eccentric motion through a replaceable low-friction sliding bearing.
Eccentric Bushing (Eccentric Bushing)— Gyratory Crusher Wear part, position 06.
Location and Function
| Material Options | Leaded tin bronze of the C93200/C93800 type, aluminium bronze or an OEM-specified centrifugally cast copper bearing alloy |
| Typical Properties and Acceptance Criteria | Operates at low speed, high contact pressure and oscillating motion with continuous oil lubrication. For example, the main composition ranges for C93200 are Sn 6.3–7.5%, Pb 6–8%, Zn 2–4% and Cu 81–85%. Confirm the actual grade and impurity limits against OEM requirements and the material standard. Acceptance checks cover composition, casting soundness, segregation, hardness, coaxiality, cylindricity, oil grooves, surface finish, interference fit and running clearance. |
| Principal Failure Mechanism | Sliding or three-body abrasion, localized impact and cracking around fastener holes; contact fatigue, lubricant contamination, temperature rise, seizure and seal failure |
Information Required for RFQ
- Equipment manufacturer, machine model, serial number, model details and latest drawing revision;
- Part dimensions, unit weight, key tolerances, assembly and fastening method;
- Current material, chemical composition, heat treatment, hardness and mechanical property reports;
- Processed material, maximum particle size, hardness/abrasiveness, moisture and tramp material records;
- Speed, load, temperature, pressure, process medium chemistry and continuous operating time;
- Failure photographs, wear measurements, crack/fracture locations and current service life;
Materials and values are for preliminary engineering selection. Final chemical composition, heat treatment, hardness and dimensional tolerances must follow the OEM drawings and technical agreement.
Related Pages
Equipment, Materials and OEM Installations
Use these links for engineering pre-selection. Final fit must be checked against the full model, serial number, drawing revision, dimensions and actual duty.
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