Drawing and Engineering Review
We review mating surfaces and interface dimensions and assess material, heat treatment and manufacturing feasibility.
Rotor Main Shaft
Transmits drive torque and carries rotor weight, impact reaction forces and cyclic bending and torsional loads.
Rotor Main Shaft (Rotor Shaft)— Hammer Crusher Wear part, position 06.
Location and Function
| Material Options | Quenched and tempered alloy steel forgings such as 42CrMo/4140 or 34CrNiMo6, or forgings to ASTM A668 Class E as specified |
| Typical Properties and Acceptance Criteria | The mainshaft must withstand torsion, bending, impact and fatigue. Typical quenched and tempered hardness may be around 260–340 HB, subject to section size and OEM requirements. Key acceptance checks include steel cleanliness, forging reduction ratio, UT, journal roundness and surface finish, fillets, keyways or polygonal connections, straightness, runout and heat treatment uniformity. Plating or weld repairs without engineering review may introduce fatigue cracks. |
| Principal Failure Mechanism | Impact, cutting and abrasion |
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
OEM installations
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.