Drawing and Engineering Review
We review mating surfaces and interface dimensions and assess material, heat treatment and manufacturing feasibility.
Apron adjustment rod
Transmits adjustment force and holds the impact apron at its set position.
Apron adjustment rod (Apron Adjustment Rod)— Impact Crusher Wear part, position 16.
Location and Function
| Material Options | Quenched and tempered alloy steel of the 42CrMo/SAE 4140 type, or an OEM-specified high-strength rod material |
| Typical Properties and Acceptance Criteria | The rod carries cyclic tension and compression, impact and stress concentrations at the threads. Typical quenched and tempered hardness may be approximately 260–340 HB, but must be checked for the section size and load. Control forging or rolling quality, thread root radii, straightness, surface defects, MT inspection, nut contact and locking. Do not attempt to solve bending or fatigue by arbitrarily increasing hardness. |
| Principal Failure Mechanism | Abrasion, fatigue, corrosion or assembly damage; use photographs of failed parts from the site to identify the dominant mechanism |
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.