BEST 8KW Series Grade 1 Electr...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,673.00
$928.27
BEST BEST 8KW Series Electrically Locked Function (Fail-Safe) Grade 1 Electromechanical Cylindrical Knob Locks BES-8KW-DEL

BEST 8KW Series Grade 1 Electromechanical Cylindrical Knob Lock with Fail-Safe Operation

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Model: 8KW37DEL4CSTK626
$1,673.00
$928.27
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,673.00
$928.27
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BEST 8KW Series Grade 1 Electromechanical Cylindrical Knob Lock with Fail-Safe Operation

Professional Remote Access Control Solution

The BEST 8KW Series electromechanical cylindrical knob lock delivers Grade 1 commercial security with remote locking capability for enhanced safety and convenience. This fail-safe (electrically locked) unit operates on 12V AC/DC at 0.50 amps or 24V AC/DC at 0.18 amps when used with the supplied Temperature Control Module (TCM). Designed for doors 1-3/4" to 2-1/4" thick, this UL listed lock meets ANSI/BHMA A156.2 Series 4000 Grade 1 standards and is approved for 3-hour fire-rated applications.

Professional Features & Benefits

  • Door Thickness Compatibility: Standard configuration for doors 1-3/4" to 2-1/4" thick accommodates most commercial door applications.
  • Dual Voltage Operation: 12V AC/DC at 0.50 amps or 24V AC/DC at 0.18 amps with supplied TCM for flexible power integration.
  • Fail-Safe Security: Electrically locked operation ensures door remains secure during power loss for enhanced safety applications.
  • Grade 1 Construction: Lock chassis meets ANSI/BHMA A156.2 Series 4000 Grade 1 requirements for heavy-duty commercial performance.
  • Non-Handed Installation: Universal lever design allows for simplified installation without field configuration requirements.
  • Integrated Sensors: Request-to-exit sensor positioned inside lock trim with door contact sensors standard for complete access control integration.
  • UL Fire Rating: UL listed for GYQS electrically-controlled single point locks on 3-hour A label single doors up to 4' x 10' for both U.S. and Canadian applications.
  • Manufacturer Warranty: 10 Year Limited warranty provides long-term protection and confidence in commercial installations.

Technical Specifications

Types

  • 12 volts AC/DC when used with supplied TCM — 0.50 amps
  • 24 volts AC/DC when used with supplied TCM — 0.18 amps
  • All EU functions: Electrically Unlocked (Fail Secure)
  • All EL functions: Electrically Locked (Fail Safe)

Approval Listings

  • UL listed for GYQS Electrically- controlled singlepoint locks or latches.
  • This product has been approved by the California State Fire Marshal (CSFM) pursuant to section 13144.1 of the California Health and Safety Code.
  • Approved by the city of New York Board of Standards and Appeals under calendar number 730-89-SA. See CSFM listing No. 4136-1175:103. It is subject to re-examination, revision and possible cancellation

Door thickness

  • Standard lock configuration designed for doors 1 3/4" – 2 1/4" thick. NOTE: All W-series locks require the use of a (TCM) Temperature Control Module. A TCM and TCM connector are supplied standard with every order.

Installation & Operation

  1. Verify electrical requirements match available power supply. Confirm voltage (12V AC/DC or 24V AC/DC) and current capacity before proceeding.
  2. Disconnect power supply before beginning installation. Follow all applicable electrical codes and safety procedures.
  3. Mount the unit in the specified location ensuring adequate clearance for wiring access, ventilation, and future service requirements.
  4. Route and connect wiring according to manufacturer wiring diagrams. Use appropriate wire gauge and connectors for the application.
  5. Configure operational settings including fail-safe operation per application requirements.
  6. Restore power and test all functions including normal operation, request-to-exit sensor, door contact sensors, and integration with connected systems.
  7. Complete final inspection and document settings. Refer to manufacturer documentation for complete wiring diagrams, programming instructions, and troubleshooting.

Professional Applications

  • Commercial Building Security Systems
  • Healthcare Facility Access Control
  • Educational Institution Safety Systems
  • Government and Municipal Buildings
  • Industrial Facility Monitoring
  • Emergency Exit Compliance
  • Multi-Tenant Residential Properties

Why Choose BEST Quality?

BEST 8KW Series electromechanical locks deliver professional-grade reliability with corrosion-treated steel construction and Grade 1 ANSI/BHMA A156.2 certification for demanding commercial applications. The 10 Year Limited warranty and UL listing for 3-hour fire-rated doors ensure long-term performance and code compliance. Engineered for demanding commercial applications where dependable remote access control and fail-safe security are essential.

Product Specs

Series:
9KW Series
Subcategory:
Bored Locksets
Grade:
Grade 1
Duty Level:
Heavy Duty
Handle Type:
Knob
Keyed Function:
Single Cylinder
Warranty:
10 Year Limited
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Product Type:
Electromechanical Knobsets
Keyed:
Yes
Electronic:
Yes
Commercial/Residential:
Commercial
Lock Type:
Cylindrical
Product Attribute:
Cylindrical Locks
Product Function:
Fail-Safe
Door Hand Direction:
Non-Handed
Product Category:
Mechanical Locks
Product Substrate:
Corrosion-Treated Steel
Department:
Door Hardware

BEST 8KW37DEL4CSTK626 – Frequently Asked Questions

1) Does the BEST 8KW electromechanical knob lock unlock or lock when power drops?
The 8KW EL (electrically locked) configuration is fail-safe: the lock is held locked by power, so when power drops the outside knob releases and the door can be opened. If you need the opposite behavior, where the door stays locked on power loss, you want an EU function lock, which is electrically unlocked (fail secure). Get this one wrong and an access-controlled opening behaves backwards during a power failure, so confirm which behavior your access control drawing calls for before ordering.
2) Will the BEST 8KW knob lock fit a 2-inch thick door?
Yes. The standard 8KW configuration covers doors 1-3/4 inches to 2-1/4 inches thick, so a 2 inch door is inside the range. That upper limit is wider than a typical cylindrical lock, which helps on heavier commercial and healthcare doors. Anything thinner than 1-3/4 inches falls outside the standard configuration.
3) What backset do I need to order for the 8KW cylindrical knob lock?
Three backsets are offered on the 8KW: 2-3/4 inches, 3-3/4 inches, and 5 inches. 2-3/4 is the standard commercial cylindrical backset and what most existing 161 preps use. The 3-3/4 and 5 inch options exist for doors with wide stiles or glass lites where the cross bore sits farther from the edge. Measure from the door edge to the center of the existing knob bore and match it.
4) Which strike should I pick for the 8KW, the S3 or the STK?
Two strikes are offered: S3, a 4-7/8 inch ANSI strike, and STK, a 2-3/4 inch ANSI strike. Pick the one matching the cutout already in your frame. Hollow metal frames with an ANSI 4-7/8 inch strike prep take the S3; frames with the shorter 2-3/4 inch prep take the STK. Choosing the wrong one means enlarging or shimming the frame mortise on site.
5) What power supply does the BEST 8KW lock need?
It runs on 12 volts AC/DC at 0.50 amps, or 24 volts AC/DC at 0.18 amps, in both cases used with the supplied Temperature Control Module. Size the power supply for the higher draw if you are on 12V, and count every lock on the circuit. All W-series locks require the TCM, and a TCM plus TCM connector ships standard with every order, so you do not have to source it separately.
6) Does the 8KW have a request-to-exit switch and door position monitoring built in, or do I add those separately?
Both are integral. A request-to-exit sensor sits inside the lock trim and door contact sensors are standard, so the lock reports egress and door position back to the access control panel without separate mounted REX or door contact hardware on the frame. Plan the wire run accordingly, since those signals come out of the lock itself.
7) Do I have to specify handing on the BEST 8KW knob lock?
No. The 8KW is non-handed, so one lock covers left and right hand openings with no field configuration of the chassis. That is useful for property managers and MRO buyers stocking spares, since a single part number serves every door in the building.
8) Is the BEST 8KW keyed, and does it take a cylinder?
Yes, the 8KW is keyed with a single cylinder, so mechanical key override is there alongside the electrified function. Locksmiths standardizing a building can key it into the same system they use on the mechanical openings.
9) What knob and rose options are available on the 8KW, and will they match my existing BEST trim?
Two knob styles are offered, 4 Round and 6 Tulip, with four roses: C rose 3 inch convex, D rose 3-1/2 inch convex, K rose 3 inch convex with no ring, and L rose 3-1/2 inch convex with no ring. Finishes run 605 bright brass, 606 satin brass, 611 bright bronze, 613 satin bronze oil-rubbed, 619 satin nickel, 625 bright chrome, 626 satin chrome, and 690 statuary dark bronze. If you are matching other openings, the rose diameter matters as much as the finish, since a 3-1/2 inch rose will cover marks a 3 inch rose leaves exposed.
10) Is this lock heavy duty enough for a school or hospital corridor door?
The 8KW chassis meets ANSI/BHMA A156.2 Series 4000 Grade 1, the heavy duty commercial rating, and the lock is built with corrosion-treated steel. That is the grade specified for high traffic institutional openings such as school corridors, healthcare access points, and government buildings.
11) Should I use an electromechanical cylindrical knob lock like the 8KW or an electric strike for access control?
A cylindrical electrified lock like the 8KW puts the control in the door leaf, so the existing frame strike prep stays as it is and you get integral request-to-exit and door contact signals out of the same device. An electric strike moves the work into the frame instead and gives you no egress or door position monitoring on its own. The tradeoff with the 8KW is that power has to cross the door, through an electric hinge or door loop, and the lock requires the supplied Temperature Control Module. If getting power into the leaf is impractical on a retrofit, frame-side hardware is the easier path.
How fast can I get the BEST 8KW37DEL4CSTK626 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 8KW37DEL4CSTK626 come with a warranty?
Absolutely. The BEST 8KW37DEL4CSTK626 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 8KW37DEL4CSTK626?
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 8KW37DEL4CSTK626 from ZenSupply?
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