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Fixed and movable jaw plates, toggle plates and side liners for Sandvik JM806, JM907, JM1108 and JM1211 jaw crushers.
JM806, JM907, JM1108, JM1211. The JM designation predates CJ and the machines are still working in plenty of plants, usually as the primary stage of a smaller operation.
A primary jaw has one characteristic failure that has nothing to do with the plate: it is fed material it was never sized for, because nobody wants to drill and blast again.
Where a plant still buys against a JM number we quote against it, confirming the frame and the plate size from the machine plate or a photograph. It is the same process as a CJ enquiry. What we do not do is assume a JM number maps to a CJ number without checking, because the two naming series were not applied consistently across every frame size.
Oversize in the feed shows up as cracked plates, bent toggles and a jaw that stalls. None of those is a casting defect. If a plant reports two plate sets a year with cracking at the top, the useful question is what the 90th percentile lump size is, not which alloy to try next. We will say this plainly even when it costs us the order, because the alternative is selling a plate that fails the same way.
JM frames were built over a long period and plate fixings changed across that period. Two machines with the same JM number can take different plates. The serial settles it. Where a customer cannot provide it, we ask for a photograph of the fixed jaw with the plate removed, which shows the fixing pattern.
| Model | Parts | Chamber options | Material |
|---|---|---|---|
| JM1108 | Fixed Jaw Plate, Movable Jaw Plate | — | Mn18Cr2 |
| JM1211 | Movable Jaw Plate, Fixed Jaw Plate | — | Mn18Cr2 |
| JM806 | Fixed Jaw Plate, Movable Jaw Plate | — | Mn18Cr2 |
| JM907 | Fixed Jaw Plate, Movable Jaw Plate | — | Mn18Cr2 |
Lead time: 15 to 30 days from drawing or sample
JM806, JM907, JM1108 and JM1211, listed with plates, toggles and side liners in the table above.
Not by default. The naming series were not applied consistently across every frame, so we confirm per machine rather than assuming a mapping.
For a repeat of an existing plate, usually yes if the fixing pattern and the profile are visible. For a first order we would rather have the drawing.
Brand names and model designations on this page describe which machines the parts fit. Shanghai Dynamix Power is an independent manufacturer of aftermarket replacement wear parts and is not affiliated with, authorised by, sponsored by or endorsed by any original equipment manufacturer. Original part numbers, where shown, are cross-references for identification only.
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