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Ensure Safety and Precision with Hänchen's Ratio-Clamp® - Reliable Hydraulic Rod Locking, Even in Power Failures.
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This distinguishes our hydraulic rod clamping unit:
  • energy-efficient during longer clamping processes
  • suitable for hydraulic cylinders and round rods
  • holding loads of up to 750 kN
    for rod Ø of 16-160 mm
  • special solution up to 2,000 kN
    for rod Ø of up to 300 mm
  • safety power-off clamping and hold

Hydraulic clamping device Ratio-Clamp®
Hydraulic rod clamping device and locking unit from Hänchen

The patented hydraulic clamping device Ratio-Clamp® hold the rod in a standstill and locks it into position mechanically. The clamping effect is immediate, lasts for an unlimited period of time and doesn't require an energy supply – suitable for various applications, as a safety element or for locking component parts into place. 100% reliable!
Rod clamping device Ratio-Clamp® hold the rod in a standstill and locks it into position mechanically.
more about clamping device basics
Hydraulic rod clamps for sensitive applications
Clamping unit with sealing system pressure piston seal
For very sensitive applications, we recommend the clamping unit design with pressure piston seal, where no pressurized seal is touching the rod. Thus, the sliding friction is very low and remains constant regardless of the releasing pressure.
Locking unit with sealing system pressure piston seal
more about pressure piston seal

Safety hydraulic clamping units for hydraulic presses, injection moulding machines, …
DGUV Test-certified hydraulic safety clamping

Featuring a particularly high safety reserve, the clamping units certified by DGUV Test are approved for the use in hydraulic presses according to EN ISO 16092-1/-3, and in plastic injection moulding machines according to EN ISO 20430.
DGUV safety certificate seal for clamping units for hydraulic presses and injection molding machines
more about DGUV Test certification
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