| Grade | Mn13 / Mn18 options |
|---|---|
| Typical mass | 180 to 420 kg per plate |
| Seat | OEM-compatible profiles |
| Hardness | Work-hardening on feed |
| Lead | Stock or cast window |
| Region | Gauteng and coastal showrooms |
Use our contact form for a tailored pack.
Also see wear notes and projects.
Interpreting jaw plate specs
The jaw plate set is available in two grades: Mn13 for general abrasive applications and Mn18 for the harshest conditions. The typical mass per plate, 180 to 420 kg, matters for safe handling and is a quick check for matching liners to your machine size. Seat refers to the profile that mates to your jaw body and cheek plate, and this must match the correct OEM profile to avoid seat fretting or poor nip angle. Hardness is not uniform, as these liners work-harden on feed: the more material passes, the tougher the crushing face becomes. Each set is cast to stock or window, so you can choose depending on your campaign schedule.
- Mn13: general abrasive use
- Mn18: high-impact, high-abrasion
- Hardness increases with use
Measuring and confirming your jaw plate profile
To avoid fitment issues, always measure the worn part’s thickness, length and bolt pattern as well as the cheek and seat faces before ordering. Photos showing the profile, mounting points and any wear pattern help us advise on the right liner. It is also essential to confirm your crusher’s model, serial plate and any OEM profile number stamped on the old plate. If possible, provide dimensions over the full length, including at the ends where taper can show. This ensures the new jaw plate beds in with correct nip angle and full seating.
- Thickness, length, width, bolt dimensions
- Photos of old liner and seat
- Crusher model and serial plate
What to send when ordering
When you contact Crusher Consumables through our contact form, please send high-res photos of the worn liners in position, including the seat and cheek mating faces and any stamped numbers. Note the crusher make, model and serial number, as well as the feed type if you know it. If you have previous change-out records, send those too. This allows us to confirm the OEM profile, advise on the correct manganese grade and avoid downtime for your next change.
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