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Simplex 8148 - Mortise
Simplex Mechanical Pushbutton Locks eliminate problems and costs associated with issuing, controlling, and collecting keys and cards.
The Simplex 8100 Mechanical pushbutton lock, with mortise locking device options and lever handle, provides exterior access by combination, while allowing free egress.
Product details
Features
No Battery: Fully mechanical lock eliminates the material and labor expense of battery replacements
Locking Device:
- Mortise with 1" (25 mm) deadbolt, ¾" (19 mm) two-piece anti-friction latch
- Mortise with ¾" (19 mm) two-piece anti-friction latch
Number of Codes: Single access code—one easy-to-manage code for all users
Programming: Lock is easily programmed via keypad without removing lock from the door
Handing: Factory-handed; not field reversible
Key Override (Optional): Small format interchangeable cores, large format removable cores
Operation Mode:
- Pushbutton Access
- Passage (select models)—allows access without using the lock entry code. Feature activated from the inside with a thumbturn or key (included with all passage feature models).
- Deadbolt (select models)—added security of 1" deadbolt. Access permitted by combination or key override.
- Lockout (all models)—disables the lock from the inside so that the entry codes cannot be used to gain access. Access is permitted using key override.
Economical: A cost effective access control solution
Technical Data
Construction: Cast front housing; unified trim plate; fixed ADA—compliant levers
Numeric Keypad: Vandal resistant, solid metal pushbuttons
Standard Finishes:
- Antique Brass 05 (609)
- Satin Chrome 26D (626)
Optional Finishes:
- Bright Chrome 026 (625)
- Bright Brass 03 (605)
Backset: 2¾" (70 mm)
Latch: ¾" (19 mm) two-piece anti-friction latch; 1" (25 mm) optional deadbolt
Minimum Stile Recommended: 5" (127 mm)
Strike: 4⅞" (124 mm) L x 1¼" (32 mm) W x ¼" (6 mm) D Deadbolt/Latch mortise strike plate
Key Override
- Interchangeable Cores: Small format—Best and equivalents (6 or 7-pin length); core not included
- Removable Cores: Large format—Medeco/ASSA/Yale/Abloy (5 or 6-pin length), Corbin Russwin, Schlage, and Sargent; core not included
Door Preparation: Easily installs on wood or metal doors. Standard (86) mortise preparation
Door Thickness: 1¾" (44 mm) to 2¼" (57 mm)
Accessibility Standard: Americans with Disabilities Act (ADA); fixed ADA-compliant levers
Durability: Weather resistant
Fire Rating: 3-hour UL/ULC fire rating for "A" labeled doors
Warranty: 3-year warranty
Manufacturer Resources
Product Specs
- Product Group:
- Mechanical Locks
- Series:
- Simplex 8100 Series
- Grade:
- Grade 1
- Product Type:
- Simplex Mechanical Push Buttons Locks
- Subcategory:
- Push Buttons Locks
- Product Subgroup:
- Mortise Locks and Trim
- Keyed:
- Yes
- Commercial/Residential:
- Commercial
- Lock Type:
- Mortise
- Handle Type:
- Lever
- Lock Function:
- Combination Entry/Passage Function With Key Override
- Product Model:
- 8148
- Product Category:
- Mechanical Locks
Dormakaba R8148-B-26D-41 – Frequently Asked Questions
1) What is the primary function of the Dormakaba Simplex 8148?
The 8148 is a passage lever lock with key override lockout and deadbolt. In passage mode, the lever operates freely without code entry. The key override allows authorized personnel to lockout the combination function when needed.
2) What door preparations does this mortise lock require?
Requires standard mortise preparation with 161mm x 25mm mortise pocket. Door thickness should be 1-3/8" to 2-1/4". Backset is typically 2-3/4". Always verify measurements against manufacturer template before cutting.
3) How do you determine the correct handing for this lock?
Stand on the secure side of the door. If hinges are on your right, order right-hand. If hinges are on your left, order left-hand. The lever and keypad orientation will be factory-configured based on specified handing.
4) What finish options are available for the 8148?
Common finishes include satin chrome, bright chrome, and dark bronze. Finish availability may vary by model configuration. Check with manufacturer specifications for current finish options and lead times.
5) What grade rating does this Simplex lock carry?
Dormakaba Simplex mortise locks typically meet ANSI Grade 1 commercial standards. The mechanical operation provides reliable performance without batteries or electrical connections required.
6) How many combination codes can be programmed?
The 8148 typically allows one active combination code. Codes are 2-6 digits long using the 5-button keypad. Code changes require disassembly of the lock mechanism following manufacturer procedures.
7) What replacement parts are commonly needed?
Common service parts include springs, buttons, lever components, and strike plates. Dormakaba provides detailed parts diagrams and service manuals. Keep model and serial numbers for accurate parts identification.
8) Can this lock be installed in fire-rated doors?
Some Simplex models carry fire rating certifications. Check specific model listings and fire rating requirements for your application. Use only approved hardware on fire-rated assemblies.
9) How do you maintain optimal operation of the mechanism?
Clean buttons and keypad regularly with mild soap solution. Lubricate internal mechanism annually with manufacturer-approved lubricant. Avoid over-lubrication which can attract dirt and debris.
10) What other Simplex models offer similar functionality?
The 8100 series offers various configurations including knob sets, different lever styles, and cylinder options. Browse our Dormakaba collection for compatible models and accessories.
11) Does extreme weather affect mechanical operation?
Mechanical Simplex locks operate in wide temperature ranges without power requirements. In severely cold conditions, mechanism may feel stiff until warmed. Proper installation with weather seals helps protect internal components.
12) What are the key measurements for installation planning?
Key dimensions include 161mm mortise length, 25mm mortise width, and 2-3/4" standard backset. Door thickness range is 1-3/8" to 2-1/4". Always confirm measurements with manufacturer template before beginning installation.
How fast can I get the Dormakaba R8148-B-26D-41 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 R8148-B-26D-41 come with a warranty?
Absolutely. The Dormakaba R8148-B-26D-41 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 R8148-B-26D-41?
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