Corbin Unit Lock Disassembly

Shieldr · 2019-12-19T05:54:53+00:00

Hello, all. I’m primarily a safe and vault technician these days, but one of my local locksmith customers asked me for help with this lock. It needs to be disassembled and rekeyed. Any input or advice would be greatly appreciated. Thanks!

Doug MacQueen

Double rollers pictures.

Doug MacQueen

Turns out there are several versions of the unit lock. Cleveland Key did not have the one I was thinking of, but did have two more versions. The darker one is very much like the original posted, but had 2 visible pins to allow disassembly. I will post that one first.

Doug MacQueen

Here is a another different one.

Pschiffe

Doug MacQueen wrote
Double rollers pictures.

Note:
Limitations. Not all modern Corbin Russwin hardware supports the larger diameter master ring cylinders, so new master ring keying systems must drive the type of hardware used.
Single shear line cylinders can be integrated into a master ring system, but the areas of their use within the structure of a keying system must be known at the inception of a system.
It is seldom possible to integrate single shear line cylinders into a master ring system after the fact. Doing so normally creates key interchange and/or places limitations on system expansion.*

I suspect that ASSA ABLOY will likely discontinue their venerable master ring system, which has been in use for 130 years; at some time in the future due to limited demand and complexity to manufacture. My 2 cents.

*from Corbin Russwin Cylinder Manual by the late A.J. Hoffman and others

Pete Schifferli

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jeffmoss26

Beautiful locks - Doug, those look like they are from the display case inside the front door?
I have a bin full of different master ring cylinders - knob, mortise, and even one rim!
Tell Bruce I said hello.

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