Extec C10 Jaw Dies J6920000 And J6930000 In Mn18Cr2
J6920000 fixed jaw die and J6930000 swing jaw die in Mn18Cr2, supplied to a european crushing customer.
What The Customer Was Dealing With
A European customer wanted to test an alternative source for Extec C10 jaw dies before committing to a supply relationship, so the first order was deliberately small.
Customer Pain Points
- Unwillingness to commit volume to an untested foundry
- A need for both halves of the die set to behave identically
- Fitment that has to be right on a first order or the trial is over

What We Did About It
We supplied the fixed die J6920000 and the swing die J6930000 as a trial order in Mn18Cr2, cast from the same heat so both halves of the set share one chemistry and one heat treatment cycle.
How The Order Ran Through The Works
Both dies cast from a single heat of Mn18Cr2
Chemistry verified from a retained sample
Solution treated and water quenched together
Back faces and bolt holes machined to drawing
Dimensional inspection report issued with the set
Packed together on one steel pallet

What Was Delivered
The trial order of J6920000 and J6930000 in Mn18Cr2 was supplied to the European customer as a matched set.
Customer Benefit
Casting both halves from one heat removes the most common variable in a trial — two dies that wear at different rates and make the result impossible to read.
Quality Control
Chemical analysis was carried out on the heat and the sample retained for at least three years. A dimensional inspection report was issued after machining and before packing.
The Parts Behind This Case

Fixed Jaw Plate
Stationary jaw dies in high manganese, from 600 × 400 machines up to a C200
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Swing Jaw Plate
Movable jaw dies cast to the same profile and heat as the fixed half
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Jaw Wedges And Fixing Bolts
The clamping parts that decide whether a new die stays bedded
View Part →About This Case
Can you name the customer?
No. We describe the customer by region and by sector — in this case a european crushing customer — because customer names are commercially confidential. The part numbers and materials are real.
Can you repeat this part for us?
Yes. The pattern for J6920000 fixed jaw die and J6930000 swing jaw die is held, so a repeat order goes straight into moulding with no pattern cost and no pattern lead time.
What documentation came with this order?
Chemical analysis and a dimensional inspection report, as on every order. Additional testing is carried out in our own laboratory when specified at order stage.
Do you supply parts to this region regularly?
Yes. Europe is a regular destination for us, and around 60% of our output is exported, directly by us or through other companies here in China.
Have A Similar Part To Source
Send the part number or a photograph with the main dimensions. We will check the pattern inventory and tell you what the lead time really is.
