Drawing and Engineering Review
We review mating surfaces and interface dimensions and assess material, heat treatment and manufacturing feasibility.
Apron Pivot Pin Bushing
Provides the apron pivot or release point and transfers impact and adjustment loads.
Apron Pivot Pin Bushing (Apron Pivot Pin and Bushing)— Impact Crusher Wear part, position 17.
Location and Function
| Material Options | Quenched and tempered or induction-hardened 42CrMo/4140 pins with copper alloy, hardened steel or OEM-specified composite bushings |
| Typical Properties and Acceptance Criteria | Pins require core toughness, surface wear resistance, bending fatigue strength and shear resistance. Bushings need resistance to seizure, embeddability and the ability to operate under boundary lubrication. Control pin bore coaxiality, pin roundness and hardened case, bushing interference, running clearance, oil grooves and dust protection. Replacing the pin without correcting a worn bore can cause rapid recurrence. |
| 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.
Equipment
Related materials
Independent aftermarket information. OEM names and trademarks belong to their owners and do not imply authorization, affiliation or endorsement. Confirm the series, full model, serial number, drawings and duty before manufacture.