Drawing and Engineering Review
We review mating surfaces and interface dimensions and assess material, heat treatment and manufacturing feasibility.
Grate Bar
Defines the discharge openings, retains oversize material and withstands further crushing loads.
Grate Bar (Grate Bar)— Hammer Crusher Wear part, position 12.
Location and Function
| Material Options | High-manganese steel, wear-resistant alloy cast steel, or a high-manganese substrate with alloy inserts or hardfacing |
| Typical Properties and Acceptance Criteria | Grate bars experience impact, compression, gouging and frictional wear. High-manganese steel suits duty with enough impact for work-hardening. Hardfacing and insert options require verification of bonding, orientation, thermal cracking and spalling risk. In addition to composition and hardness, control curvature, cross-section, end supports, spacing, thermal expansion and height variation across the set: grate openings directly govern the upper product size. |
| Principal Failure Mechanism | Impact, cutting and abrasive wear; enlarged openings, blockage, erosion 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.