BEST 1EE Series Slabbed Lost M...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$167.00
$118.18
BEST 1EE Series Slabbed Lost Motion Mortise Cylinder 7-Pin Less Core, 1-5/32" Diameter BES-1EE-LESSCORE

BEST 1EE Series Slabbed Lost Motion Mortise Cylinder 7-Pin Less Core with 1-5/32" Diameter

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Model: 1EE7E4-C4RP3626-LC
From the E Series Cylinders Collection
$167.00
$118.18
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$167.00
$118.18
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BEST 1EE Series Slabbed Lost Motion Mortise Cylinder 7-Pin Less Core with 1-5/32" Diameter

Professional Mortise Cylinder Component for Commercial Lock Systems

The BEST 1EE Series Slabbed Lost Motion Mortise Cylinder delivers precision-engineered security for commercial mortise lock applications. This 7-pin cylinder features a 1-5/32" diameter with solid brass or bronze construction and 1-1/4" effective length. The slabbed lost motion design provides enhanced security while the C229 cam configuration ensures proper lock operation with right-hand or left-hand applications.

Professional Features & Benefits

  • Precision Diameter: 1-5/32" diameter engineered for exact mortise lock compatibility and secure fit.
  • 7-Pin Security Configuration: Enhanced pin tumbler arrangement with 1-1/4" effective length for superior pick resistance.
  • Heavy-Duty Construction: Solid brass or bronze materials provide exceptional durability and corrosion resistance for long-term performance.
  • Lost Motion Design: Slabbed lost motion mechanism prevents unauthorized manipulation while maintaining smooth operation.
  • Standard Cam Configuration: C229 cam supplied standard with right-hand or left-hand specification options for versatile installation.
  • Professional Ring Package: RP2 ring package included standard for proper cylinder retention and alignment.
  • Special Length Options: Available in 2" cylinder length (1-3/4" effective) and 2-1/4" cylinder length (2" effective) for specialized applications.

Technical Specifications

  • Collection: E Series Cylinders
  • Commercial/Residential: Residential
  • Department: Door Hardware
  • Parts and Accessories Type: Replacement Parts
  • Product Attribute: Parts and Accessories
  • Product Category: Mechanical Locks
  • Product Group: Parts and Accessories
  • Product Subgroup: Cylinders
  • Product Type: Cylinders
  • Series: 1EE Series
  • Subcategory: Parts and Accessories

Installation & Operation

This cylinder component is designed for use with compatible BEST mortise lock systems. Refer to the parent lock installation instructions and manufacturer documentation for proper integration. Ensure compatibility with existing hardware before installation and verify cam hand specification matches lock requirements.

Professional Applications

  • Commercial Office Building Security
  • Educational Facility Access Control
  • Healthcare Institution Lock Systems
  • Government and Municipal Buildings
  • Multi-Tenant Residential Properties
  • Industrial Facility Security
  • Retail Establishment Access Points

Why Choose BEST Quality?

BEST 1EE Series cylinders deliver professional-grade security with solid brass or bronze construction engineered for demanding commercial applications. The precision 7-pin configuration with slabbed lost motion design provides enhanced pick resistance while maintaining reliable operation. Backed by comprehensive technical documentation and proven performance in institutional security applications where dependable access control is essential.

Manufacturer Resources

E Series Service Manual

Product Specs

Series:
1EE Series
Subcategory:
Parts and Accessories
Product Group:
Parts and Accessories
Product Subgroup:
Cylinders
Product Type:
Cylinders
Commercial/Residential:
Residential
Collection:
E Series Cylinders
Parts and Accessories Type:
Replacement Parts
Product Attribute:
Parts and Accessories
Product Category:
Mechanical Locks
Department:
Door Hardware

BEST 1EE7E4-C4RP3626-LC – Frequently Asked Questions

1) What size is the BEST 1EE mortise cylinder housing?
1-5/32 inch diameter with a 1-1/4 inch effective length on the standard housing. Longer options are offered as 2 inch cylinder length (1-3/4 inch effective) and 2-1/4 inch cylinder length (2 inch effective) where a thicker door or deeper trim needs the extra reach. Measure from the face of the lock case to the outside of the trim before picking a length.
2) Why does the BEST 1EE cylinder require me to pick right hand or left hand?
Handing sets the cam orientation. The 1EE ships with a C229 cam and is ordered right hand or left hand to match the lock it is going into, so a cylinder specified for the wrong hand will turn but will not throw the bolt correctly. Confirm the hand of the mortise lock case before you order.
3) I need an interchangeable core but my locks are Schlage keyway. Is the BEST 1EE right?
Not for a Schlage system. The 1EE takes a BEST 7-pin interchangeable core. If you are staying on Schlage, the Schlage 20-057 6-pin FSIC rim cylinder with convertible tailpiece cam, or the 20-057-C full size interchangeable core in C keyway, is the matching direction. For a fixed Schlage C keyway mortise cylinder instead, the Detex MC65 is a 1-1/8 inch 6-pin in Schlage C.
4) My opening is an aluminum storefront with an Adams Rite MS deadlock. Does the BEST 1EE work, or do I need an Adams Rite cylinder?
The BEST 1EE can be specified with an Adams Rite MS cam, which is the cam profile MS deadlocks require, so it is usable on that opening while keeping the door on a BEST interchangeable core system. If you would rather stay with native Adams Rite hardware, the 4036 is a five-pin mortise cylinder rated Grade 1 with a 1/2 inch minimum door thickness. Where the storefront uses an MS1847 and needs a pull as well as a cylinder, the Adams Rite 4024 cylinder pull mounts with a trim plate and the 4025 is a five-pin cylinder pull with through-screws.
5) What is a comparable mortise cylinder if I need one that ships with a core and keys instead of a less-core housing?
The BEST 1EE Series mortise cylinder is supplied less core, so the core and keys are sourced separately to match an existing keying system. If you need a mortise cylinder that arrives as a complete keyed unit, the Corbin Russwin 1000 Grade 1 mortise cylinder in 1-1/2 inch length with an A02 straight cam is a conventional keyed mortise cylinder, and the Detex MC65 is a 6-pin mortise cylinder cut to the Schlage C keyway at 1-1/8 inch. Confirm the cam style your mortise lock case requires before ordering either one.
6) I need an interchangeable core cylinder but for a rim device, not a mortise lock. What should I order instead of the BEST 1EE?
The BEST 1EE is a mortise cylinder body, so it threads into a mortise lock case and will not serve a rim exit device. For a rim application taking an interchangeable core, the Schlage 20-057 is a 6-pin FSIC rim cylinder with a convertible tailpiece cam. If you need the core itself rather than the rim housing, the Schlage 20-057-C is a full size interchangeable core in the C keyway, 643E aged bronze.
7) Which interchangeable core mortise cylinder should I look at if the lock is a Schlage L9000?
The BEST 1EE is a 7-pin mortise cylinder housing supplied less core, with a C229 cam standard and right hand or left hand cam specification. If the opening is a Schlage L9000 mortise lock and you want an LFIC housing sized for it, the Corbin Russwin 1080 is a 1-1/2 inch LFIC mortise cylinder, 6-pin, for Schlage L9000 mortise locks with an A01 Schlage L cam. The Corbin Russwin 1070 is a 1-1/4 inch 6-pin mortise housing with an A01 cloverleaf cam.
8) What ring options come with the BEST 1EE mortise cylinder?
An RP2 ring package is supplied standard, and the ring style is an ordering choice: 3E mortise, 6-pin mortise, 7-pin mortise, rim cylinder, or tapered cylinder. Rings take up the gap between the cylinder face and the trim, so pick the one that matches your collar depth and whether the housing is sitting in a mortise or rim prep.
9) What does slabbed lost motion mean on a mortise cylinder?
Lost motion means the cam has free travel before it engages the lock, so the key can rotate through part of its arc without driving the bolt. It is used where the lock case needs that delay to sequence correctly. If your lock expects a direct-drive cam with no free play, this is the wrong housing for it.
10) Is the BEST 1EE a good choice if I am standardizing a whole building on one key system?
It is built for exactly that. Because the housing ships less core, every 1EE you install takes the same BEST 7-pin interchangeable core, and rekeying an opening is a core swap with a control key instead of a locksmith call. Solid brass or bronze construction handles institutional traffic, and the same housing family covers mortise and rim ring configurations so one part standard covers several opening types.
11) What is the difference between the BEST 1EE less-core cylinder and a conventional keyed mortise cylinder like the Corbin Russwin 1000?
Two different service models. The 1EE is a less core housing that accepts a removable BEST 7-pin core, so rekeying is a core pull. The Corbin Russwin 1000 Series is a Grade 1 mortise cylinder in a 1-1/2 inch length with an A02 straight cam, keyed as a unit, so rekeying means pinning the cylinder itself. If your maintenance staff carries control keys, go interchangeable core; if you rekey rarely and want fewer parts to order, a conventional cylinder is simpler.
12) Do I need anything else besides the BEST 1EE housing to finish the job?
You need the BEST 7-pin interchangeable core and its keys, since the housing ships without them. The RP2 ring package comes with the cylinder, so collars are covered unless your trim needs one of the other ring styles. Cam or spindle is selected at order, not supplied loose. The E Series Service Manual covers the core and housing service procedure.
13) Is a rim cylinder like the Schlage 20-021 a substitute for the BEST 1EE mortise cylinder?
No. The Schlage 20-021 is a 6-pin rim cylinder with a vertical tailpiece cam and its companion 20-022 uses a horizontal tailpiece cam; both mount through the door and drive a rim device from the back. The BEST 1EE is a threaded mortise cylinder with a C229 cam and a 1-5/32 inch diameter that seats into the cylinder pocket of a mortise lock case. The two are not interchangeable in either direction.
14) What do I use if the door is a wood door with an Adams Rite 5017 deadlock rather than a mortise lock case?
The BEST 1EE is built for the cylinder pocket of a mortise lock case. For a wood door running an Adams Rite 5017 wood door deadlock or deadlatch, the Adams Rite 4026 is a five pin tumbler cylinder pull made for that application.
15) I need a replacement cylinder for a key-in-lever or key-in-knob lockset, not a mortise lock. What are my options?
A mortise cylinder such as the BEST 1EE will not drop into a key-in-knob or key-in-lever chassis. For those, the Kaba Ilco 1539 is a universal key-in-knob and lever cylinder, the 1579 is a knob and lever cylinder made for Sargent locksets, and the 1599 is a key-in-knob replacement cylinder. On Falcon RU and T series levers, the A23161-05 G is a 6-pin G keyway key-in-lever cylinder supplied keyed different with two cut keys.
16) What is the difference between the BEST 1EE lost motion cylinder and a Medeco lazy motion cylinder?
Both use a free-turning arrangement so the key does not bind the mechanism. The BEST 1EE is a slabbed lost motion mortise cylinder at 7 pins with a 1-5/32 inch diameter, supplied less core. The Medeco lazy motion parts are rim type units for residential lock bodies: the 1012040 is a 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts, the 1065244 is a 5-pin lazy motion rim cylinder with an Emtek tailpiece, and the 1075127 is a 5-pin rim type lazy motion single cylinder for handlesets and deadbolts. Match the format to the lock body you are servicing.
17) Does ordering the BEST 1EE with the rim cylinder ring make it a rim cylinder equivalent to a Corbin Russwin 3070?
The ring selection on the BEST 1EE covers 3E mortise, 6-pin mortise, 7-pin mortise, rim cylinder and tapered cylinder ring packages, which address the trim at the face of the cylinder. That choice does not convert the mortise body into a rim housing. A true rim housing is a different part, such as the Corbin Russwin 3070 6-pin rim cylinder housing with a 1-7/8 inch tailpiece.
18) What cylinder do I order for an Emtek handleset or deadbolt instead of the BEST 1EE?
For Emtek trim, the Emtek CY4 cylinder is the native part sold individually. As a retrofit route, the Medeco 1065140 is a 5-pin cylinder for Arrow JL interconnected locks and the Emtek handleset and deadbolt outside cylinder, and the Medeco 1065244 is a 5-pin rim lazy motion cylinder supplied with an Emtek tailpiece. The BEST 1EE is a mortise cylinder body and does not fit those handlesets.
19) Which finishes does the BEST 1EE cylinder come in for matching existing door hardware?
Ten finishes: 605 bright brass, 606 satin brass, 611 bright bronze, 612 satin bronze, 613 satin bronze oil-rubbed, 619 satin nickel, 622 matte black, 625 bright chrome, 626 satin chrome, and 690 statuary dark bronze. For a property with mixed openings, match the BHMA number stamped on the existing trim rather than the finish name.
20) I need a keyed cylinder for a deadbolt. Is the BEST 1EE the right part?
No. The BEST 1EE is a mortise cylinder body supplied less core for mortise lock cases. For deadbolt applications, the Kaba Ilco 1549 is a key-in-deadbolt cylinder, and the 1539, 1579 and 1599 Ilco cylinders are also catalogued for deadbolt function. Verify the tailpiece or cam the deadbolt body requires before ordering.
How fast can I get the BEST 1EE7E4-C4RP3626-LC 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 BEST 1EE7E4-C4RP3626-LC come with a warranty?
Absolutely. The BEST 1EE7E4-C4RP3626-LC 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 BEST 1EE7E4-C4RP3626-LC?
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 BEST 1EE7E4-C4RP3626-LC from ZenSupply?
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