27 Years of Precision ManufacturingAccuracy to ±0.005 mmExports to 42+ Countries
Typically replies within 24 hours

Straight Punches for Heavy Load

Uniform Cylindrical Shank with Heavy-Duty Capability. Browse 2 products from MISUMI and DAYTON with configurable dimensions and same-day shipping on standard catalog items.

Straight Punches for Heavy Load (2 Products)

Heavy Load Straight Punches Lapping | MISUMI Industrial Punches
Heavy Load Straight Punches Lapping | MISUMI Industrial Punches

Heavy Load Straight Punches Lapping for reliable forming under high stress. Powdered high-speed steel options support wear resistance in tooling. Request a quote.

Heavy Load Straight Punches Lapping | Lapping Surface for Heavy-Duty Tooling
Heavy Load Straight Punches Lapping | Lapping Surface for Heavy-Duty Tooling

Heavy Load Straight Punches Lapping for heavy-duty punch applications. Lapped surface finish improves sliding stability and tool life. Request a quote.

Straight Heavy Load: When You Need Both

You Are in the Right Place If:

  • You need heavy load capacity AND press-fit (H7/m6) mounting
  • Your die uses ball-lock retainer systems for quick-change operations
  • Punch spacing is tight (straight shank minimizes plate footprint)
  • Material thickness is 3-6mm with standard or high-strength steel

Consider Standard Heavy Load (Shoulder) Instead If:

  • You need positive mechanical retention against high stripping forces
  • Your punch plate bores are not precision-reamed for H7 tolerance
  • The die does not use ball-lock retainers
Design note: Straight heavy load punches combine the compact mounting footprint of straight punches with the reinforced cross-section of heavy load designs. The H7/m6 press-fit is sufficient for retention when stripping forces are within normal ranges (stripping force <15% of piercing force).

About Straight Punches for Heavy Load

Straight heavy load punches combine the uniform cylindrical shank profile (H7/m6 press-fit compatible, ball-lock retainer compatible) with reinforced cross-section geometry for thick-plate stamping. Ideal for tight-pitch die layouts that require both high punch density and heavy load capability.

H7/m6 Press-FitHeavy LoadBall-Lock CompatibleSKD11

Application Scenarios

🔩

Large-Diameter Heavy Piercing

Piercing 20-30mm holes in 4mm+ mild steel for structural fastener holes in construction and agricultural equipment.

Why straight heavy load fit: Large shank diameter provides heavy load capacity while the straight profile allows ball-lock retainer mounting for quick replacement of worn punches.

Recommended:Straight Heavy Load Punch, 25mm shank, SKD11

Frequently Asked Questions

How can a heavy-load punch maintain a straight profile without a shoulder?+
The straight heavy load design achieves reinforcement through optimized body-to-tip diameter ratio and shorter unsupported length, rather than a stepped shoulder. The larger body diameter increases the moment of inertia for buckling resistance while maintaining a uniform cylindrical exterior compatible with standard straight punch bores.
What are the best practices for mounting straight heavy-duty punches?+
Use precision-reamed H7 bores in hardened punch plates (HRC 45+). Assembly via arbor press at room temperature. Verify bore diameter with a plug gauge before each installation. Apply a thin film of assembly paste (molybdenum disulfide) to the shank for easier future removal.
Are there specific die plate hardness requirements for these punches?+
The punch plate bore must be hardened to HRC 45-50 minimum to maintain H7 tolerance stability under repeated press-fit cycles. Soft plates (HRC <40) will develop bore wear and lose retention. Die plates typically use S50C or SKD11 pre-hardened to HRC 48-52.

Engineering Resources

Need a Custom Quote?

Send your specifications and receive a quote. MOQ: 1 piece. Custom dimensions available.

✓ MOQ 1 piece✓ Custom dimensions✓ Typically replies within 24 hours

Related Product Categories