RCHX Hydraulic Rod Lock - Exclusion Series

Heavy-Duty, Fail-Safe Rod Locking for Harsh Environments

The AMLOK RCHX Series rod locks offer specialized power-off clamping designed specifically for severe-duty applications, including harsh environments and submersible operations. Utilizing rugged steel construction and advanced sealing technology, RCHX locks automatically clamp and secure cylinder rods immediately upon hydraulic pressure loss, providing reliable safety and precision positioning even in extreme conditions.

Key Benefits:

  • Rugged Construction | Precision-machined heavy-duty steel body, corrosion-resistant for long-term reliability.
  • Fail-Safe Operation | Automatically engages via robust disc springs when hydraulic pressure is lost; releases upon pressure restoration.
  • High Clamp Force | Compact design delivers substantial clamping force equally in both tension and compression.
  • Zero Rod Displacement | Locks immediately without shifting the rod position, ensuring precision and accuracy.
  • Enhanced Durability | Oil-filled housing with dual rod wipers and seals protects internal components from abrasive contaminants, extending service life.
  • Flexible Installation | Suitable for direct NFPA cylinder mounting or stand-alone configurations.
  • Proximity Indication | Integrated proximity switch port clearly signals unlock status, enhancing operational safety.

Service & Repair Support

Need maintenance or a rebuild? Our US-based team provides comprehensive RCHX rod lock service and repair, from seal kits to complete overhauls. Contact us today to restore performance and extend the life of your equipment.

Technical Overview

The RCHX Series employs a mechanical spring-loaded mechanism to immediately engage a robust locking collet onto the cylinder rod when hydraulic pressure is lost. Internally lubricated, lip-type piston seals ensure effective sealing, reduced friction, and extended life. The oil-filled, sealed housing with rod-wiper systems further protects against harsh environmental conditions, making the RCHX ideal for demanding industrial and submersible applications.

Available Options

Customize your RCHX rod lock for specific environments and needs:

  • Corrosion-Resistant Construction | Stainless steel or electroless nickel-plated housing for corrosive or washdown conditions.
  • High-Temperature Seals | Viton® seals for high temperatures and aggressive fluids.
  • Environmental Protections | Wipers/scrapers prevent contamination; fully sealed units for food processing, chemical, or underwater use.
  • Tandem Configuration | Dual RCH units can be mounted in tandem for double the holding capacity.

Proven in Demanding Applications

The AMLOK RCH Series is suited for any heavy-duty application where a hydraulic axis must be securely locked in place to prevent movement. Key application examples include:

  • Injection Molding & Die Casting Machines
  • Hydraulic Presses and Forming Machines
  • Machine Tool Axes (Vertical/Horizontal)
  • Amusement and Theatrical Lifts
  • Scissor Lifts & Elevating Work Platforms
  • Material Handling & Industrial Automation
  • Heavy Mobile Equipment
  • Municipal and Utility Vehicles
  • Energy & Infrastructure
  • Any Critical Hold Application

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