The Thomson Engineering Design Autolok Rail Grab is available in hydraulic, manual, pneumatic, and electric versions and can be supplied for either running, conductor, or grooved rail handling.

A key feature of the Autolok is the enclosed mechanism with a ‘red flag’ indicator to show whether the jaw is open or safely locked onto the rail.

Although the manual Autolok weighs Panel lifting less than 25kg it has a safe working load of 1,250kg and is tested to 3,000kg.

Four basic types of Autolok are available: the Autolok H with hydraulic operation, the Autolok M manual version, the Autolok P pneumatic version, and the Autolok E with 24Volt electrical operation of the jaw mechanism.

All three types can be specified for handling either running rails, conductor rails, what is an m8 bolt, or grooved rails. Special purpose models can also be provided. See the Specifications Document for more details.

  • Cam mechanism means no linkage to stick
  • Fully enclosed mechanism to minimise risk of damage
  • High strength to withstand heavy duty use


  • Hydraulic Operation
  • Manual Operation
  • Pneumatic Operation
  • Electric Operation (24V / 12V DC)
  • Running Rail
  • Conductor Rail
  • Grooved Rail


Who operates this attachment?
TXMPlantL&W ContractorsBalfour Beatty
Specifications Document
Click for .PDF
Automatic Autolok Rail Grab for infra structure
Automatic Autolok Rail Grab for construction


  • Lightweight, Compact Design
  • Cam Mechanism for Safety
  • Red Flag Jaw Status Indicator
  • Hydraulic, Manual, Electric, or Pneumatic Operation
  • Designed for High Dynamic Loads
  • Proven in Service Since 2006
  • 2,000kg WLL
  • CE Marked