RLI Pneumatic rod lock | ISO 6431 (metric)

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RLI Pneumatic - ISO 6431

Pneumatic Rod Lock features

AMLOK's pneumatic rod locks are designed to control problems like over-travel, drifting, bouncing, and reverse-traveling that are inherent in pneumatics. Their patented intensifier–a mechanically–operated mechanism that ensures quick and secure locking-enables these units to lock when there is a loss of air pressure.

For braking applications, contact the factory.

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

RLI Pneumatic Rod Lock

Pneumatic Rod Lock features

  • Precision holding (0.005-0.008 mm) with fast response time (100 m/sec, optimized circuit)
  • No rod displacement on engagement; extremely low backlash
  • Consistent clamping force in both directions; holds loads during power/pressure loss when rated values are not exceeded
  • With oversized components the contact area of the clamping collet is considerably greater than average, reducing pressure per square inch and extending service life
  • Patented Intensifier: Special piston and collet-locking mechanism actuated by a spring that mechanically locks the rod; unlocks by air actuation of the piston which compresses the spring and releases the collet-locking mechanism
  • High clamp force with a small footprint
  • Profile matches ISO 6431 metric styles for cylinders
  • One-piece, solid-body design that can be mounted in any position
  • Release pressure range: 4-8 bar (60 (min) to 120 (max) psi)
  • Maximum operating pressure: 11 bar (160 psi)
  • Operating ]Media: clean, dry, filtered, compressed air
  • Operating temperatures:
    Standard 10ºF to 180ºF (-12ºC to 82ºC)
    Optional 10ºF to 250ºF (-12ºC to 121ºC)

Pneumatic Rod Lock options

  • Stainless or electroless nickel-plated housing
  • Viton seals
  • Wiper/scraper
  • Sealed units for food, chemical, washdown, or other applications


  • Fixturing (Machine Tools)
  • Hydraulic Presses
  • Automation Equipment
  • Earth-moving Equipment
  • Scissor-Lift Tables
  • Test and Positioning Equipment
  • Printing and Paper Handling Equipment
  • Theater Equipment (Platforms)
  • Amusement Ride Equipment
  • Mining

application stories

Pneumatic Rod Lock Specifications

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