Dormakaba MOD ARJ Modular Door...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$145.00
$97.73
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Dormakaba MOD ARJ Modular Door Closer Arm for 8600/7400 Series, Round, Non-Hold Open, Top Jamb, 4" - 8" Reveal

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Model: MOD ARJ 689

In Stock (leaves warehouse same day if ordered before 3pm ET)

$145.00
$97.73
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Dormakaba MOD ARJ Modular Door Closer Arm for 8600/7400 Series, Round, Non-Hold Open, Top Jamb, 4" - 8" Reveal

The Dormakaba MOD ARJ is a modular replacement door closer arm engineered specifically for compatibility with the Dormakaba 8600 and 7400 Series door closers. Designed for top jamb mounting, this round-profile arm accommodates a 4" to 8" reveal range, making it adaptable across a wide variety of commercial door frame configurations. The non-hold open design ensures controlled, reliable door closure in every cycle, supporting safety and code compliance in commercial environments.

Key Features

  • Reveal Range Compatibility: Designed to accommodate a 4" to 8" reveal, providing flexible installation across diverse commercial door frame depths and configurations.
  • Series Compatibility: Engineered specifically for use with Dormakaba 8600 and 7400 Series door closers, ensuring precise fit and reliable performance as a modular replacement component.
  • Top Jamb Mounting: Configured for top jamb installation, offering a clean and professional appearance while delivering consistent closer arm performance.
  • Non-Hold Open Design: Provides controlled, automatic door closure without a hold-open feature, supporting traffic flow management and fire door compliance in commercial settings.
  • Round Profile Construction: Features a round arm profile for a classic, professional aesthetic compatible with standard commercial hardware installations.
  • Modular Replacement Part: Designed as a drop-in modular replacement arm, simplifying maintenance and service for existing Dormakaba 8600/7400 Series closer installations without requiring full hardware replacement.
  • Commercial-Grade Application: Built to meet the demands of commercial door hardware environments where durability and dependable operation are essential.

Technical Specifications

  • Department: Door Hardware
  • Product Category: Mechanical Locks
  • Product Group: Parts and Accessories
  • Subcategory: Parts and Accessories
  • Product Subgroup: Parts and Accessories
  • Product Type: Door Closer Arms
  • Parts and Accessories Type: Replacement Parts
  • Commercial/Residential: Commercial
  • Product Model: MOD ARJ
  • Features: Dorma Door Closer Parts & Accessories

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Dormakaba MOD ARJ?

Dormakaba door closer arm components are engineered to exact specifications for seamless integration with the 8600 and 7400 Series closer platforms, ensuring reliable modular replacement without compromising performance. The MOD ARJ's top jamb configuration and 4" to 8" reveal range deliver installation flexibility that meets the varied demands of professional commercial door hardware applications. Specifying Dormakaba replacement parts preserves the integrity and operational consistency of the original closer system.

Manufacturer Resources

Product Specs

Department:
Door Hardware
Product Category:
Mechanical Locks
Product Group:
Parts and Accessories
Subcategory:
Parts and Accessories
Product Subgroup:
Parts and Accessories
Product Type:
Door Closer Arms
Parts and Accessories Type:
Replacement Parts
Commercial/Residential:
Commercial
Product Model:
MOD ARJ
Features:
Dorma Door Closer Parts & Accessories

Dormakaba MOD ARJ 689 – Frequently Asked Questions

1) Will the Dormakaba MOD ARJ arm fit my 8600 Series door closer?
Yes. The MOD ARJ modular closer arm is built for the Dormakaba 8600 and 7400 Series closers, so it drops onto either platform as a replacement arm without swapping out the closer body. If your closer is a different series or another brand, this arm is not the part.
2) What reveal can a top jamb mounted MOD ARJ closer arm handle?
The MOD ARJ covers a 4 inch to 8 inch reveal, which is the distance from the face of the door to the surface of the frame where the arm's shoe lands. If your frame reveal falls in that band, this is the correct top jamb arm; a reveal under 4 inches or over 8 inches needs a different arm.
3) Is the MOD ARJ a hold open arm?
No. It is a non-hold open arm, so the door closes on every cycle with no detent to park it open. That matters on fire rated openings and any door that has to stay latched. If you need the door to stand open, a non-hold open arm is the wrong choice.
4) Do I have to replace the whole door closer if the arm is bent or broken?
Not on an 8600 or 7400 Series closer. The MOD ARJ is a modular replacement arm, so a maintenance tech can change just the arm and leave the closer body and its existing frame prep in place. That is the usual fix after a door has been forced past its stop.
5) Can I use a top jamb closer arm if the closer is mounted on the pull side of the door?
Top jamb mounting puts the closer body on the frame face on the push side of the opening, with the arm reaching back to the door. The MOD ARJ is configured for that arrangement. A pull side (regular arm) installation or a parallel arm application takes a different arm configuration, not this one.
6) What finishes does the Dormakaba MOD ARJ closer arm come in?
Three: 689 aluminum, 693 black, and 695 dark bronze. Those are the standard closer finish codes, so pick the one that matches the closer body and the other arms in the building if you are keeping a fleet of openings consistent.
7) I am standardizing closers across a building. Does one MOD ARJ part work on both left and right hand doors?
The MOD ARJ is specified by mount type and reveal, not by hand, so the ordering decision is finish and reveal range: 4 to 8 inch reveal, top jamb, non-hold open, in 689 aluminum, 693 black or 695 dark bronze. For each opening, confirm the closer is an 8600 or 7400 Series and that the frame reveal falls inside the 4 to 8 inch range.
8) Is this closer arm rated for commercial traffic or is it a residential part?
It is a commercial-grade component, specified for offices, schools, healthcare, retail, industrial buildings, multi-tenant residential and government facilities. The round arm profile is the conventional look on commercial closer hardware.
How fast can I get the Dormakaba MOD ARJ 689 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Dormakaba MOD ARJ 689 come with a warranty?
Absolutely. The Dormakaba MOD ARJ 689 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Dormakaba MOD ARJ 689?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Dormakaba MOD ARJ 689 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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