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Satin chrome mortise cylinder with thumb turn, 1-1/8 inch length

Kaba Group

Kaba Group 7181TK2-26D 1-1/8" Mortise Turn Knob Cylinder Lock

SKU CH-SM24-P1CNJ MPN 7181TK2-26D

Solid brass mortise cylinder with thumb-turn operation, Adams Rite #2 cam, 1.150 x 32 UNS threads and 34.5 mm face diameter

  • Lock keyingKeyed Different
  • Surface finishSatin Chrome
  • Sold asBox
  • Product typeMortise Cylinder
  • Solid brass construction resists wear and corrosion
  • Satin chrome US26D finish matches modern hardware
  • 1-1/8 inch length fits standard mortise pockets
  • Adams Rite cam #2 works with common exit devices
  • Thumb-turn operation allows keyless egress from inside

Solid Brass Mortise Cylinder

The Kaba Group 7181TK2-26D is a 1-1/8 inch mortise turn knob cylinder built from solid brass with a US26D satin chrome finish. It suits residential and commercial doors where a thumb turn operates the latch from the inside without a key. The cylinder uses a 5 pin tumbler mechanism and ships keyed different for individual access control.

Threaded Brass Construction

Precision machining to OEM specifications gives the cylinder a 1.150 x 32 UNS thread and a 1.360 inch (34.5mm) face diameter. Solid brass resists corrosion and wear in indoor and outdoor environments while the satin chrome surface withstands daily handling. No electronic components or moving fans mean silent, maintenance-free operation.

Adams Rite Cam Compatibility

The included Adams Rite Cam #2 fits common mortise lock bodies that accept the stated thread and face dimensions. Builders can install the cylinder in existing hardware without modifying the door prep. The thumb-turn-only design frees the exterior side for separate keyed entry or pull hardware where required.

How it compares

Measured against everything we stock in Door Lock Sets & Deadbolts, at today’s prices. Recalculated every night.

Price $20.99
Cheaper than about 69% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameIlco
Model name7181TK2-26D
Product typeMortise Cylinder
Size & build
Surface finishSatin Chrome
More details
Lock keyingKeyed Different

Questions about this item

How do I install the 1.150 x 32 UNS threaded cylinder into a mortise lock?

Thread the cylinder into the mortise lock body until the Adams Rite Cam #2 aligns with the latch mechanism, then secure with the set screw; the step often missed is verifying cam engagement before tightening the set screw.

What maintenance will the solid brass cylinder and satin chrome finish need over time?

Lubricate the 5-pin tumbler mechanism annually with dry graphite powder and wipe the US26D finish with a soft cloth; avoid oil-based lubricants that attract dust and abrasive cleaners that damage the satin chrome.

What is the first limitation I will hit during heavy daily use of the thumb turn?

The 5-pin tumbler mechanism will show wear before the solid brass body, typically as increased resistance or looseness in the thumb turn rotation after extended high-cycle operation.

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