Drawing and Engineering Review
We review mating surfaces and interface dimensions and assess material, heat treatment and manufacturing feasibility.
Liner bolts
Clamps replaceable liners to the frame or impact apron and resists impact, vibration and loosening.
Liner bolts (Liner Bolts)— Impact Crusher Wear part, position 19.
Location and Function
| Material Options | Property class 10.9/12.9 alloy steel, quenched and tempered 35CrMo/42CrMo steel, or OEM-specified impact-resistant fasteners |
| Typical Properties and Acceptance Criteria | Liner bolts must balance adequate clamping force, impact toughness and fatigue resistance. Check the property class, thread, shank diameter, head profile, grip length, nuts and locking arrangement against the OEM specification. Inspect for decarburization, cracks, necking and thread-rolling defects. Do not substitute a harder grade without assessing preload and toughness. |
| Principal Failure Mechanism | Sliding or three-body abrasion, localized impact and cracking around fastener holes |
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.