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What are the metal Shear blades working Principles?

The shear knifes adopt the highest quality tool structural steel, ensuring reliability and durability. It includes a top moving blade and a lower blade. the upper blade on the tool holder is fixed to the lower blade seats and adopts reasonable blade clearance for various thicknesses. The small sheet metal shear replacement blades are positioned at an angle relative to each other. These two blades are forced past each other with the space between them determined by a required offset. A 5-degree shear angle decreases the force by about 20%. and the shearing blade gap adjustment can influence the quality of the cuts and tool life.

What is industrial shear blade sharpening and material?

Sharpen or replace your shear knives for maximum wear resistance and impact strength. when hydraulic metal stomp shears blade sharpening is tough, it can be surface ground to the same precision tolerances to maintain a high level of productivity and ensure the finest cut quality.

The shear knife blades are made of special steel alloy, with full heat treated through the toughest conditions. The shear blade material can be SKD11, D2, or 6CrW2Si. Our blades are available in two-edge, and four cutting edges. We have manufactured blades for many shear brands: Accur, Amada, Trumpf, and LVD. We offer complete designs for unique, obsolete, as well as custom designs for homemade shears. we offer ironworker shear blades and replacement shear blades.

How It Works?

Sheet Metal Shear Blades Advantages

We are a metal shear blade manufacturer, the Hydraulic Shear blade replacement assembly is easy to install with 2 side edge or 4 side edges with high efficiency and low cost.

Straight Line Cuts without deformation

Apply for aluminum, Stainless, and mild (low carbon) steel.

Automation with high accuracy

OEM replacement shear blades suppliers

Why Choose JSTMT( Metal Shear Blades)?

JSTMT has been in the Sheet Metal Fabrication Industry since 1985, with mechanical processing equipment: Multi-task Machine centers, Boring & Milling machines, and lathes facilities, our company delivers high-quality and reliable small break presses, hydraulic shears, and shear steel knife.

      • OEM & Customization: We provide precision-matched replacement blades for world-renowned brands such as Durma, Amada, LVD, Accurpress, and Cincinnati.
      • R&D Excellence: Our engineering team can customize blade geometry and material hardness based on your specific cutting requirements and production volume.
      • Global Export Experience: With a proven track record of exporting to over 50 countries, we understand international quality standards and provide fast, reliable global shipping.
      • Factory Direct Pricing: As a direct manufacturer, we eliminate the middleman, offering you premium industrial knives at competitive factory prices

Contact our engineering team today for a custom quote on high-quality shear blades!

Applications

The shearing cutting blades are used for cutting steel plates into different strips with exacting tolerances. It is an important spare parts in the shearing machine. The shear knives include a top blade and bottom blade, and can be used for cutting different materials such as mild steel, stainless steel, and aluminum.

Strip cuts

cutting Strips

Sheet Cuts

sheet cuts

Sheet Pallets

sheet-plate

Technical Resources & Troubleshooting Guides

To ensure the longest lifespan for your shear blades, correct setup and material selection are critical. Browse our technical library below to optimize your shearing production:

  • Setup Guide: Before installing new knives, ensure you set the correct gap. View our [Shear Blade Gap Clearance Chart] for Mild Steel vs. Stainless Steel.
  • Material Selection: Not sure which grade to buy? We compare [9CrSi vs. 6CrW2Si vs. H13 Materials] to help you choose the longest-lasting steel for your application.
  • Troubleshooting: Is your machine cutting curved or twisted parts? Read our guide on [5 Common Shearing Defects] (Twist, Bow, & Camber) and how to fix them.
  • Maintenance: Wondering if you can save money by grinding old blades? Read our cost analysis on [Sharpening vs. Replacing Shear Blades].

FAQ- Frequently asked questions

The replacement shear blade is a cutting blade for the metal shear machine.  It is composed of a top moving blade and a lower blade. The material is made of high chrome or high carbon steel for extended blade life. It works by clamping the material with the upper blade and the lower blades with a fixed cutting angle.

What Materials are Often Used for the Blades of the Shears

Shearing( die cutting) is a process that cuts stock without the formation of metal chips. If the cutting blades are straight the process is called shearing; if the cutting blades are curved then they are shearing-type operations.

The Hydraulic metal cutting shear is a kind of machine that uses the moving upper blade and fixed lower blade to apply shear force to metal plates of various thicknesses by using reasonable blade clearance, to break and separate the plates according to the required size.

The replacement shear blades are available in two-edge for swing beam shear and four-edge for guillotine shear. and the material of the shearing machine blade parts is hardened to ensure consistent hardness; The hardening and tempering furnace can handle shear blades up to 16 feet in length.

  1. Two side edge shear knife. It is used for swing beam shear with two sides flat and two sides inclinable edge. The movement route is a circular line.
  2. Four side edge shear knife. It is used for a guillotine shear. The movement route is a straight line.
    SwingBeam Shear blade design
    Swing Beam Shear blade design
Guillotine-shear blade design
Guillotine-shear blade design

 

 

 

Catalogue

JSTMT catalogue

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