General Info

The clamping unit Ratio-Clamp® is used to securely clamp piston rods and any other rods. It is used as a separate unit or as an attachment to a hydraulic cylinder.

Ratio-Clamp® will continue to clamp during controlled or uncontrolled pressure drops, and even in case of an emergency shutdown or a power failure.
The device can be used for stepless load-holding over unlimited periods of time.

Its purpose is to clamp piston rods safely in place immediately from a standstill – it is not a brake. The clamping unit Ratio-Clamp® operates by the friction force principle.

The respective states – piston rod clamped (locked) or unlocked – can be detected by inductive proximity switches. These can be chosen directly in the electronic catalogue or installed at a later date.

A functional control system with an automatic sequence can be implemented by the use of a control block.

Overview of Ratio-Clamp® equipment

CharacteristicDesign
Releasing pressureBasic design
Reduced design
Sealing systemServocop®: compact seal, lip seal, wiper ring
Pressure piston seal, lip seal, wiper ring
CertificationTÜV certification
DGUV certification test

Mounting Clamping unit Ratio-Clamp®

All types of clamping unit Ratio-Clamp® can be installed on hydraulic cylinders. For this purpose, the piston rod of the cylinder has to be lengthened depending on the length of the clamping device.

Technical data

  • for all round rods with hard surfaces
  • load capacity independent of direction
  • after 2 million switching cycles the Ratio-Clamp® shall be inspected at the factory
  • max. rod speed: 1 m/s for Servocop®, 2 m/s for pressure piston seal
  • max. releasing pressure: 160 bar
  • working temperatures: -30°C bis +80°C
  • fluids: mineral oils, others like water, HFC or Skydrol® on request

Request a quotation today!

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