What A 500000 Shot Mould Warranty Actually Covers
Every mould in this catalogue is rated at 500,000 or 600,000 shots. What that figure means, what it excludes, and how to make it hold.
It is a design life, not an insurance policy
When a mould is quoted at 500,000 shots, that is the cavity and core life it has been designed and steeled for, running the nominated material under normal maintenance. It is not a promise that nothing will go wrong. A mispositioned part that gets closed on, a slide that fails to return, a press with a cooling fault: none of those are covered by a shot figure and none of them are the mould maker's doing.
Why the tools here split at 500,000 and 600,000
Across the archived catalogue the ABS sanitary tools in quenched S136 are rated at 500,000 shots, while several NAK80 and SKD61 tools are rated at 600,000. The difference is not simply hardness. It reflects how much abrasive work the gate and shut offs are doing, how many slides are wearing, and how corrosive the moulding environment is. A simple straight pull tool in a stable material will outlast a six slide tool in the same steel.
What shortens it in practice
In order: slides that are not greased on schedule, gates run past the point where they stop shearing cleanly, storage without oiling or plugging the circuits, and material changes nobody told the mould maker about. Only the last one is a design issue. The rest are maintenance, which is why every mould leaving here goes with a documented interval rather than a general instruction to look after it.
How to make the number real
Keep a record against the mould number of every run, every correction and every service. When a tool comes back for repair at three hundred thousand shots, the difference between a two day job and a two week job is whether anyone knows what has already been changed. A spare component set travels with every mould we build for the same reason.
In This Guide
Products Referenced In This Guide
Mould Components And Inserts
Mould Base Components
Guide pillars, bushings and slide hardware as a matched set
Mould Components And Inserts
Mould Inserts And Core Pins
Replace the feature that wore out, not the whole cavity
Moulds For Sanitary Ware Parts
ABS Sanitary Part Mould With S136 Cavity Steel
Stainless quenched cavity for a plated bathroom part
Product materials ABSMould material S136 quenching
Moulds For Home Appliance Parts
PC Home Appliance Mould With Two Cavities
The fastest cycle in the whole archived catalogue
Product materials PCMould material S136 quenching
Related Reading
Material Guide
How To Choose Cavity Steel For An Injection Mould
S136, NAK80, S-Star, SKD61 and 718 all appear in this catalogue. What each one is actually for, and what it costs you to pick the wrong one.
Design Guide
Slides And Lifters And What Undercuts Really Cost
Every undercut adds a moving part to the mould. From one slide to six, what each one adds to cost, cycle and maintenance.
Industry
Medical Instrument
Instrument housings and moulded components for medical equipment makers
Industry
Home Appliance
Housings, control panels and trim parts for white goods and small domestic appliances
Questions On This Topic
Follow up questions this guide raises.
What happens when a mould reaches its rated shot count?
Usually nothing dramatic. Finish degrades, flash starts at the shut offs and dimensions drift. It is a point at which to plan refurbishment, not a cliff.
Can a mould be refurbished rather than replaced?
Often yes. Inserts, core pins and slides can be replaced while the mould base and ejection system carry on. That is much cheaper than a new tool, provided the tool was built with replaceable components.
Does running faster shorten mould life?
Running outside the cycle the tool was designed for does. Pushing cycle down means either higher pressure or less cooling, and both accelerate wear. The archived cycle figures already assume proper cooling.
Apply This To Your Own Part
General guidance only goes so far. Send the model and the moulding grade and we will tell you what it means for your tool.