Header Punches & Punch Pins
Punch Case for Bolt Die Tooling
Punch case tooling for bolt die assemblies. Jungu checks punch support length, holder fit, clearance, station alignment, material route, and breakage pattern before quoting.
What is Punch Case for Bolt Die Tooling used for?
A punch case for bolt die tooling supports and locates the punch inside a cold-heading or forming station. It looks like a simple sleeve, but the working risk is alignment and support. If the punch case has too much clearance, the punch can tilt and break at the nose. If the support length is short or the bore is not coaxial with the holder, the finished bolt head may become eccentric even when the punch profile is correct. Jungu reviews the punch drawing, case bore, holder size, station number, support length, clearance target, material and hardness route, lubrication condition, and photos of worn bores, fretting, punch breakage, or off-center formed parts before quoting. This page is for buyers trying to stabilize punch life and station alignment.
Common sourcing use
Punch support and location in bolt die assemblies where bore fit, support length, and station alignment control punch life.
Related product families
Technical Review Scope
What Jungu checks
- Punch diameter, case bore, holder interface, support length, and clearance target
- Station number, load direction, punch alignment, guide length, and lubrication
- Material route, hardness target, heat treatment, surface finish, and wear resistance
- Failure mode: loose punch, bore wear, fretting, punch nose breakage, bending, or eccentric part
Why no standard price is shown
This is B2B custom tooling. A reliable quotation depends on drawing, material, size, tolerance, machine setup, annual quantity, and the mould-life issue the buyer wants to solve. Jungu quotes after technical review instead of showing a misleading fixed price.
Information Needed for Quotation
| Assembly data | Punch drawing, case drawing, holder size, support length, and station photos. |
|---|---|
| Fit control | Bore diameter, clearance target, coaxiality, guide length, and lubrication condition. |
| Material route | Case material, hardness target, heat treatment, surface finish, and expected tool life. |
| Failure evidence | Photos of worn bore, fretting marks, broken punch, bent punch, or eccentric formed part. |
Application and Buyer Fit
| Typical application | punch support and location in bolt die assemblies where bore fit, support length, and station alignment control punch life |
|---|---|
| Buyer review focus | case bore, holder fit, punch support length, clearance, material hardness, station alignment, and fretting or breakage pattern |
| Quotation basis | drawing, material, tolerance, machine model, quantity, and target tool life |
| Review output | a punch case route matched to punch support, holder interface, bore tolerance, and forming station load |
Inquiry Process
- Send drawings and application details.
- Jungu reviews manufacturability and tooling route.
- Engineering confirms material, tolerance, and mould-life target.
- Quotation and lead time are prepared after technical confirmation.
FAQ
Why does a punch break when the profile is correct?
The punch may be tilting because the case bore, holder fit, or support length is wrong.
Can Jungu make only the case?
Yes, but punch and holder dimensions are still needed to control clearance and alignment.
What is the most useful photo?
Send the worn case bore, broken punch, holder position, and the off-center part if available.
Can this product be customized?
Yes. Jungu manufactures fastener mould tooling according to buyer drawings, samples, and machine requirements.
Need this tooling reviewed?
Send drawings, machine model, material, and current failure photos for review.