RCH Hydraulic Rod Lock | NFPA (inch)

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RCH Hydraulic Rod Lock Specifications

AMLOK's hydraulic rod locks provide power-off clamping for rods and shafts. Designed to clamp components after the motion has stopped, these rod locks securely hold the position of the part as long as the force limits are not exceeded.

For braking applications, contact the factory.

See SITEMA safety devices when the potential for personal injury exists.

RCH Hydraulic Rod Lock

RCH Rod Lock features

  • Axial holding forces from 1100 to 80000 lbf.
  • Rugged, heavy-duty alloy-steel construction
  • Locking mechanism clamps by mechanical springs and releases with hydraulic pressure
  • Through-hole construction profile for standard NFPA cylinder mounts*
  • Holds forces equally in either direction
  • Can be mounted in a “stand-alone” configuration on a separate guide rod
  • RCH units are designed for a machine tool-type market**
  • High clamp force with a small footprint
  • No rod displacement on engagement

* Standard housing can be mounted to any machine structure or be custom-designed to suit your application.

** For extreme conditions, please consult the factory.


  • Stainless steel construction
  • Electroless nickel-plated housing
  • Viton seals
  • Sealed unit for severe environment
  • Wiper/Scrapers
  • Tandem mount for high holding force
  • Available in a sealed version for food industry, wash-down, or even underwater applications


  • Injection molding machines
  • Hydraulic presses
  • Amusement equipment (platforms)
  • Theatrical equipment (platforms)
  • Paper handling equipment
  • Machine tools: presses, vertical heads, rams, platforms
  • Fixturing (machine tools)
  • Anti-drift applications
  • Scissors lift tables
  • Printing equipment
  • Heavy-duty earth-moving equipment
  • Industrial processing equipment
  • Mining applications
  • Municipal vehicles and equipment: Public works, fire, gas, electric, and cable vehicles
  • Locking spherical valves in piston hydro power generating plants
  • Any application where holding the cylinder in place is desireable
  • Positioning: Height adjustment of winch installations and rollers; securing of adjusting drives; holding of solenoids, piston rods, and spacers
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RCH Hydraulic Rod Lock Specifications

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Want to learn more?

Check out the Complete Guide to Power-Off Clamping

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