Schlage B520-730 Modular Strai...
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Schlage B520-730 Modular Straight Mortise Cylinder Cam for Corbin Russwin DL4000 Series, 1-1/8" / 1-3/8" / 1-5/8" Conventional

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Model: B520-730

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

$29.69
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Schlage B520-730 Modular Straight Mortise Cylinder Cam for Corbin Russwin DL4000 Series

The Schlage B520-730 is a Modular Straight Mortise Classic Conventional Cylinder Cam engineered for precision compatibility with the Corbin Russwin DL4000 Series, specifically the Corbin 420 and Russwin 1503 lock bodies. Designed to accommodate conventional mortise cylinders in 1-1/8", 1-3/8", and 1-5/8" lengths, this replacement cam delivers reliable mechanical performance in commercial door hardware applications. Its modular design simplifies field servicing and parts replacement without requiring full lock body removal.

Key Features

  • Multi-Length Cylinder Compatibility: Accommodates conventional mortise cylinders in 1-1/8", 1-3/8", and 1-5/8" sizes, providing flexible fit across a range of door hardware configurations.
  • Targeted Lock Series Compatibility: Specifically designed for use with the Corbin Russwin DL4000 Series, including Corbin 420 and Russwin 1503 lock bodies, ensuring precise mechanical engagement.
  • Modular Straight Design: Classic straight cam geometry supports straightforward installation and field replacement in compatible mortise lock assemblies.
  • Conventional Cylinder Interface: Engineered for conventional cylinder cam profiles, maintaining proper actuator alignment and smooth rotational operation.
  • Commercial-Grade Replacement Part: Built to Schlage's commercial hardware standards, this cam is suited for high-demand institutional and commercial environments where dependable operation is essential.
  • Genuine Schlage Component: An authentic Schlage part, ensuring fit, form, and function consistent with original equipment specifications for the supported lock families.

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: Cams & Cam Locks
  • Parts and Accessories Type: Replacement Parts
  • Commercial/Residential: Commercial
  • Product Model: B520-730
  • Features: Schlage Parts

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Government and Municipal Buildings
  • Multi-Tenant Residential Properties
  • Institutional Facilities Requiring Corbin Russwin DL4000 Series Hardware
  • Industrial and Warehouse Facilities

Why Schlage B520-730?

Schlage cylinder cam components are manufactured to exacting commercial tolerances, ensuring that replacement parts deliver the same mechanical integrity as original equipment. The B520-730's modular straight design and multi-length cylinder compatibility make it an efficient, field-ready solution for maintaining Corbin Russwin DL4000 Series lock assemblies in demanding commercial environments where consistent performance is non-negotiable.

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:
Cams & Cam Locks
Parts and Accessories Type:
Replacement Parts
Commercial/Residential:
Commercial
Product Model:
B520-730
Features:
Schlage Parts

Schlage B520-730 – Frequently Asked Questions

1) Which lock bodies does the Schlage B520-730 mortise cam fit?
The B520-730 cam is made for the Corbin Russwin DL4000 Series, specifically the Corbin 420 and Russwin 1503 lock bodies. If you are servicing a different mortise lock family, this is the wrong cam - cam geometry is lock-body specific, and a cam cut for a different body will not throw the lock's actuator correctly.
2) What cylinder lengths will the Schlage B520-730 cam work with?
It accommodates conventional mortise cylinders in 1-1/8, 1-3/8 and 1-5/8 inch lengths. Those are the three standard commercial mortise cylinder lengths used as door thickness and trim depth increase, so the same cam carries you across most openings in a building without stocking three part numbers.
3) Will the B520-730 cam work with a small format interchangeable core cylinder?
No. The B520-730 is a conventional cylinder cam, cut for conventional mortise cylinder cam profiles. An SFIC or large format IC housing uses its own cam arrangement, so you would need the cam specified for that core type instead.
4) Do I have to pull the mortise lock body out of the door to change this cam?
No. The modular straight design is meant for field servicing and parts replacement without full lock body removal. In practice you back the cylinder out through the face, swap the cam on the cylinder, and reinstall - the lock case stays in the door pocket.
5) What is a straight cam and why does it matter on a Corbin Russwin DL4000?
The cam is the small flat tail on the back of a mortise cylinder that transfers key rotation into the lock case. A straight cam runs in line with the cylinder rather than being offset or dogged, and the DL4000 Series bodies (Corbin 420, Russwin 1503) are built around that straight profile. Fit the wrong cam shape and the key turns but the lock does not retract.
6) Does the B520-730 come with a cylinder, or is it just the cam?
Just the cam. It is a replacement part only - you supply the conventional mortise cylinder in 1-1/8, 1-3/8 or 1-5/8 inch length, plus the cam screws if yours are damaged. Order the cylinder separately in the keyway and keying your building already runs.
7) Is this cam rated for commercial door traffic or is it a residential part?
It is a commercial part, built to Schlage's commercial hardware standards for institutional use - offices, schools, healthcare, government buildings, multi-tenant residential and warehouse facilities. It is not a residential-grade component.
8) Is the Schlage B520-730 a genuine Schlage part or an aftermarket cam?
It is an authentic Schlage component, model B520-730, supplied to match fit, form and function of original equipment for the lock families it supports. For a facility standardizing on one replacement part number across many DL4000 openings, that matters more than the price of a generic cam.
How fast can I get the Schlage B520-730 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 Schlage B520-730 come with a warranty?
Absolutely. The Schlage B520-730 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 Schlage B520-730?
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 Schlage B520-730 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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