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Mechanical Trailer Restraint MVR
Mechanical Trailer Restraint
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Optional Dock Kits
Non galvanized
Hot Dip Galvanized (add $1293)
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Mechanical Dock Lock and Trailer Restraint
50,000 lbs restraining force
12" - 30" Operating Range


The MVR Series trailer restraint makes dock safety affordable and easy. Featuring a high strength unit with a streamlined, low profile housing, the MVR provides a restraining force in excess of 50,000 lbs. While the dock locks rugged, solid steel housing is built to withstand weathering and truck impact. Installs in about 1 hour! Self-cleaning Spring and hook assembly requires no maintenance and only periodic lubrication. Add on features offer a complete Visual Communication Package including inside/outside signage for enhanced safety at the dock.

MVR Mechanical Truck Restraint Owners Manual (PDF)
MVR Mechanical Truck Restraint Diagram (PDF)


  • Bolt Hole Pattern Design provides optimal holding force.
  • Non-impact Operation - meets 1998 R.I.G. regulations.
  • Semi-automatic unit provides Restraining Force in excess of 50,000 lbs.

Easy Installation

  • Installs in approximately 1 hour.
  • Mounts directly to face of new or existing dock using 8 anchor bolts and 2 ground anchors. Recommended Factory Consultation available for dock heights of less than 48" or 24" deep pits.
  • Optional Factory Provided Blockout available for bumper projections greater than 4" (including Edge-of-Dock Levelers).
  • Optional Steel Mounting Plate for new construction and Template for Pre­mounting Attachment Bolts.

Simple Operation

  • Using the Activation Bar, operator depresses and aligns hook with the
  • R.I.G. bar.
  • Semi-automatic unit rises to securely capture the R.I.G. Prior to truck departure, operator uses activation bar once more to push hook down and pivot it back into stored position.


  • Exclusive Pivoting Hook captures and holds all legal R.I.G.'s: Allows
  • for debris or snow removal within 4" of dock face.
  • Positive Float Feature maintains R.I.G. contact with hook while allowing free float with vertical truck movement.
  • Unique Activation Bar allows semi-automatic operation from top of dock. Eliminates need for dock personnel to leave area.
  • Complete safety signage is standard. Inside/outside Manually Operated or Automatic Light System with safety signs is optional.

1-year warranty on structural members. A 1-year warranty is provided on mechanical and miscellaneous parts (including materials, labor, and freight). 

When Pit Leveler lip length exceeds 18" or Pit depth exceeds 20" notify your Loading Dock Supply Representative.

Upgrade Your Dock Lock to the MVR105

Optional inside/outside Manually Operated or Automatic Light System with safety signs is available; MVR105 Communication System includes inside/outside Traffic Light Signals and Driver Warning Signs.

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Loading Dock Equipment
October 31, 2019

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