Temperguss vs. Ganzstahl: Welche BESSEY-Schraubzwinge passt zu Ihrem Projekt?

Malleable Cast Iron vs. All-Steel: Which BESSEY clamp is right for your project?

Malleable cast iron screw clamps or all-steel screw clamps? This is a question many craftsmen ask themselves when choosing the right clamping tool. Both types of clamps from BESSEY have their specific strengths and areas of application. The decisive difference: Malleable cast iron screw clamps clamp rigidly, while all-steel screw clamps clamp resiliently. In this guide, we compare both types directly and show you which screw clamp is the right choice for your application.

The decisive difference: Rigid vs. Resilient

Malleable Cast Iron Screw Clamps (TG Series) - Rigid Clamping

With rigid clamping, the pressure remains constant, even if the material settles or works minimally. Ideal for woodworking, where a uniform, firm pressure is required.

All-Steel Screw Clamps (GZ Series) - Resilient Clamping

With resilient clamping, the clamp compensates for small movements and settling of the material. This protects sensitive workpieces and is particularly important for metal and mixed materials. It also prevents loosening due to vibrations.

Malleable Cast Iron Screw Clamps (TG Series) in Detail

Suitable for: Rigid clamping in woodworking.

The malleable cast iron screw clamps offer:

Advantages:

  • ✅ Up to 6,000 N clamping force
  • ✅ Rigid clamping - ideal for woodworking
  • ✅ Proven durability since 1936
  • ✅ Wide range of sizes (50 mm to 1500 mm clamping width)
  • ✅ Various handle options: 2-component handle, toggle handle, wooden handle

Ideal for:

  • Woodworking and carpentry
  • Gluing work
  • Furniture making
  • Projects requiring firm, rigid pressure

All-Steel Screw Clamps (GZ Series) in Detail

Suitable for: Resilient clamping for woodworking and metalworking.

The all-steel screw clamps offer:

Advantages:

  • ✅ Up to 8,000 N clamping force
  • ✅ Resilient clamping - protects sensitive workpieces
  • ✅ Versatile for wood AND metal
  • ✅ Extremely robust due to all-steel construction
  • ✅ High torsional rigidity
  • ✅ Durable and low-maintenance

Ideal for:

  • Woodworking
  • Metalworking
  • Welding work
  • Versatile workshop tasks
  • Projects requiring resilient pressure

Direct Comparison: Malleable Cast Iron vs. All-Steel

Property Malleable Cast Iron Screw Clamps All-Steel Screw Clamps
Clamping Type Rigid Resilient
Clamping Force Up to 6,000 N Up to 8,000 N
Main Application Woodworking Wood and Metalworking
Material Malleable Cast Iron All-Steel
Special Feature Constant pressure Compensating pressure, vibration-proof


Decision Guide: Which Clamp for Which Application?

Application Recommended Clamp Reason
Woodworking / Gluing Malleable Cast Iron TG Rigid clamping, constant pressure
Metalworking All-Steel GZ Resilient clamping, versatile
Wood and Metalwork All-Steel GZ Universally applicable, resilient
Welding work All-Steel GZ Heat-resistant, extremely stable, resilient
Furniture making Malleable Cast Iron TG Rigid clamping, various sizes

Important Selection Criteria

1. Clamping Width

Consider the maximum width you need to clamp. BESSEY offers clamping widths from 50 mm to 1500 mm.

2. Clamping Force

Depending on the material and application, you need different clamping forces:

  • Light work: 2,000-4,000 N
  • Medium work: 4,000-6,000 N
  • Heavy work: 6,000-8,000 N

3. Reach

The reach determines how far you can clamp from the edge. Choose the reach according to your workpieces.

4. Clamping Type: Rigid or Resilient?

  • Rigid (Malleable Cast Iron): For woodworking, constant pressure
  • Resilient (All-Steel): For wood and metal, compensating pressure

Conclusion: Malleable Cast Iron or All-Steel?

The choice between malleable cast iron and all-steel screw clamps depends on your material and application:

If you have any questions about choosing the right BESSEY screw clamp, please do not hesitate to contact us!

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