Trailer Restraints

Rotating Hook Vehicle Restraint with a 24-Hour Back-Up Battery

The SMART-HOOK Series AR-20K offers the most enhanced loading dock safety and performance in the industry with its patented NO-PINCH Auxiliary Lock System, securing all trailers with rear impact guard obstructions.

Nordock guarantees these products will outperform all others on the market.

✓ The strongest hold: With mounting forces exceeding 100,000 pounds, our trailer restraints are capable of holding the heaviest trucks. While the locking hook secures virtually all rear impact guards in excess of 32,000 pounds of restraining force to eliminate trailer pinch.

✓ One size fits all: Able to lock a variety of trucks with a vertical operating range from 9″ to 30″.

✓ Prevent serious workplace injury/accidents: Ensure the safety of your workers and prevent the truck from moving forward during loading.

✓ Flexible: Hydra-Float barrier automatically adjusts to track movement during loading.

✓ Durable: All components are zinc plated for superior durability and weatherproofing.

Information

Vehicle Restraints That are Guaranteed to Outperform

Rotating Hook:
Smart-Hook AR-20K

Automatic:
ATL Series

Manual:
MTL Series

Pit Hook:
Pit-Hook PH3000

AR-20K Rotating Hook Trailer Restraint

Improve loading dock safety with AR-20K’s No-Pinch auxiliary lock and Power-Safe battery reserve systems. AR-20K’s patented Impact-Guard front carriage reinforcement provides unequalled protection from damage caused by incoming trailers, while its patented direct drive system consists of a direct-coupled IP66 waterproof-rated high torque DC motor and high-efficiency helical gears.

24-Hour Battery Backup Trailer Restraint

View a breakdown of the features of the unique rotating hook vehicle restraint, including a battery backup system that grants full vehicle restraint functions with safety communication lights for up to 24 hours by clicking the image on the right.

Truck-Lock Series of Vehicle Restraints (ATL and MTL Models)

Click on the image to view a breakdown of the features of our Truck-Lock series of vehicle restraints.

Photos

Customers That Love This Product

Read customer success stories

Models

	Rotating Hook: Smart-Hook The AR-10K and AR-20K are premium automatic vehicle restraints designed to secure trucks at the loading dock by using a large rotating hook to engage a trailer's rear impact guard. Models: AR-10K, AR-20K
	Automatic: ATL Series The Truck-Lock automatic series of trailer restraints improve safety with strength, convenience and reliability. Models: ATL-400, ATL-450, ATL-500, ATL-900
	Manual: MTL Series These Truck-Lock trailer restraints are affordable, manually-operated units designed to lock trailers with a large barrier. Models: MTL-100, MTL-200, MTL-230, MTL-250, MTL-300
	Pit Hook: Pit-Hook PH3000 The Pit-Hook model is a premium automatic hydraulic-powered unit with a restraining hook that is stored at the back of the building face, clear of incoming trucks within a pit cavity below the dock leveler, away from weather and debris.

Model Comparison Chart

	AR-10K/AR-20K
Vertical operating range	9"-30"
Mounting force	100,000 lbs
Restraining force	32,000 lbs
Enclosed working parts	Yes, NEMA 12 rated
Rotating hook	Yes
Battery-back-up	Yes, 24 hours

	ATL-400	ATL-450	ATL-500	ATL-900
Vertical operating range	9"-30"
Mounting force	100,000 lbs
Restraining force	32,000 lbs
Enclosed working parts	Yes, NEMA 12 rated
Rotating hook	No
Battery-back-up	No

	MTL-100	MTL-200	MTL-230	MTL-250	MTL-300
Vertical operating range	9"-30"
Mounting force	100,000 lbs
Restraining force	32,000 lbs
Enclosed working parts	Yes	Yes	Yes, NEMA 12 rated	Yes, NEMA 12 rated	Yes, NEMA 12 rated
Rotating hook	No
Battery-back-up	No

Customizations

Complete Communication Systems for All Models

Flashing LED signal lights for inside/outside usage.	Wall-mounted sign with reverse writing for easy driver readability.	Control panel with simple push-button operation.
Additional Options
Cantilever extension mounting bracket. Cast-in wall mounting plate. AR-10K/Pit-Hook: Keyed override switch. Pit-Hook: Dock leveler stored interlock switch.

Warranty

1 year: Parts.
5 year: Structural.

Specifications

Components	Zinc plated for superior durability
Design	Non-impact design with low profile (9" above grade)
Guide tracks	Self-cleaning

Components	Steel hook constructed from 50,000 psi yield material
Design	Non-impact design with low profile (9" above grade)
Horizontal extension	14"
Mount	Under dock pit

Videos

AR10K Demonstration Learn how the AR10K trailer restraint works and it's 24 hour battery backup.	Pit-Hook operation Watch how the Nordock Pit-Hook operates to lock a trailer bar.
ATL trailer restraints Prevent accidental trailer departure with ATL automatic trailer restraints from Nordock, which provides continuous upward force once docked.