Trailer restraints
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The vehicle restraint with a rotating hook and 24-hour back-up battery
Chris Brady, VP of Sales and Marketing at Northern Dock Systems, demonstrates and explains the key features of the rotating hook trailer restraint–the AR-10K–which includes a 24-hour battery back-up and utilizes smart technology for ultimate safety.
• 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
 Smart-Hook AR-10K |
 ATL series |
 MTL series |
 Pit-Hook PH3000 |
Features on the AR-10K trailer restraint
Click on the image to view a breakdown of the features of the unique rotating hook vehicle restraint, including a battery back-up system that grants full vehicle restraint functions with safety communication lights for up to 24 hours.
Features on the Truck-Lock series of vehicle restraints (ATL and MTL models)
Click on the image to view a breakdown of the features on our Truck-Lock series of vehicle restraints.
Photos
Customers that love this product
Models
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Rotating hook: Smart-HookThe 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 |
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Automatic: ATL seriesThe Truck-Lock automatic series of trailer restraints improve safety with strength, convenience and reliability.Models: ATL-400, ATL-450, ATL-500, ATL-900 |
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Manual: MTL seriesThese 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 |
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Pit hook: Pit-Hook PH3000The 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 | ||||
| Mounting force | ||||
| Restraining force | ||||
| Enclosed working parts | ||||
| Rotating hook | ||||
| Battery-back-up | ||||
| MTL-100 | MTL-200 | MTL-230 | MTL-250 | MTL-300 | |
| Vertical operating range | |||||
| Mounting force | |||||
| Restraining force | |||||
| Enclosed working parts | Yes | Yes | Yes, NEMA 12 rated | Yes, NEMA 12 rated | Yes, NEMA 12 rated |
| Rotating hook | |||||
| Battery-back-up | |||||
Customizations
Complete communication system for all models |
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| 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 |
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| • Cantilever extension mounting bracket. • Cast-in wall mounting plate. • AR-10K/Pit-Hook: Keyed override switch. • Pit-Hook: Dock leveler stored interlock switch. |
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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
Pit hook operationWatch how the Nordock Pit-Hook operates to lock a trailer bar. |