Drawing and Engineering Review
We review mating surfaces and interface dimensions and assess material, heat treatment and manufacturing feasibility.
Pinion
Transfers drive torque to the gear to operate the eccentric assembly.
Pinion (Pinion)— Gyratory Crusher Wear part, position 30.
Location and Function
| Material Options | Alloy steel such as 18CrNiMo7-6, 20CrMnTi or 50CrMo4, with carburising or quenching and tempering appropriate to the grade and the OEM matched gear design |
| Typical Properties and Acceptance Criteria | Carburised designs commonly specify a tooth surface around 58–62 HRC with a tough core. Quenched and tempered designs use lower tooth hardness selected together with the mating gear. Control material cleanliness, forging, case depth, core properties, tooth profile and lead, runout, MT/UT, contact pattern and backlash. Select pinion material as part of the gear pair. |
| Principal Failure Mechanism | Impact, cutting and abrasive wear; gear tooth or pin-and-bushing wear, pitting, scuffing, uneven loading and fatigue |
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
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.