Original BESSEY all‑steel screw clamp GZ with tommy bar

Product details
  • 20 % more clamping force per spindle rotation with optimised rail profile
  • Maximum security with linear transfer of force at the sliding arm
  • Clamping force up to 6,000 N
  • Fixed jaw and sliding arm are constructed of tempered steel for resilient clamping
  • Tommy bar with rounded ends for simple transfer of force when clamping
  • Pressure plates can be replaced by hand – no need for tools
steel wood
Order number Opening Throat depth Rail Weight
mm mm mm kg
GZ16K 160 80 17,5x6,8 0.5
GZ20K 200 100 22x8,5 0.93
GZ25K 250 120 24,5x9,5 1.31
GZ30K 300 140 28x11 1.89
GZ40K 400 120 28x11 2
GZ50K 500 120 28x11 2.2
GZ60K 600 120 28x11 2.4
GZ80K 800 120 28x11 2.76
GZ100K 1000 120 28x11 3.18
GZ125K 1250 120 28x11 3.65
Maximum stability

The optimised profile shape guarantees greater clamping force build-up in the shortest time, while maintaining greater stability and safety. The fixed clamp forged from a single piece with moulded pressure plate is hardened, tempered and galvanised, making it highly durable and torsion-resistant.

Forged sliding arm

The sliding arm allows for more efficient transfer of force. As a result of its more linear transfer of force, the new U-shaped sliding arm offers maximum security with the heaviest of loads. You can rely on that.

Pressure plate

For enhanced serviceability the pressure plate can be changed with no need for tools. It can be replaced very easily and quickly.

Smooth‐running spindle

The surface‐coated spindle with acme thread is particularly smooth‐running, and does not bind. For even smoother, more efficient work.

  • Interior fittings
  • Metal construction
  • DIY
  • Furniture and joinery works
  • Locksmith work
  • For clamping resiliently, elastically and powerfully
  • Clamping tools are not suitable for lifting, pulling or transporting.
  • Clamping tools may only be clamped manually without using any auxiliary tools.
  • Improper use can cause personal injuries or material damage.
  • Never change or modify clamping tools. Only use them in their original condition. Only use original‐spare parts if required.
  • Fixed and sliding bracket made of tempered steel, galvanised
  • Spindle with trapezoidal thread in rolled steel, burnished
  • Toggle made of steel, galvanised
  • Pressure plate made of steel, cold pressed, galvanised
  • Regular maintenance is necessary - only then can a secure hold be guaranteed (no slipping of the sliding bracket)
  • Clean the rails with solvent
  • Always keep the rail free of grease, oil or dried glue, waxes and silicone-based release agents
  • Clean and oil the spindle regularly
  • If the rail is shiny, roughen both narrow sides with emery cloth (100 grain)
  • Clean and oil the pressure plate regularly

Product video All-steel screw clamp with tommy bar GZ-K


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