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1 1/2 inch mortise cylinders

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DIY Dave

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Post Sun Nov 02, 2014 5:56 pm

1 1/2 inch mortise cylinders

I've got a few quick questions

Corbin master ring mortise cylinders are 1 1/2 inch in diameter, but are all Corbin 1 1/2 mortise cylinders the master ring type, or do they make standard cylinders in that size also? Does any other company make 1 1/2 mortise cylinders? What are the 1 1/2 cylinders used in? I've never seen any type of lock that uses anything but the standard size.
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jeffmoss26

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Post Sun Nov 02, 2014 6:39 pm

Re: 1 1/2 inch mortise cylinders

I have a mortise lock here that takes the master ring cylinder. Our masonic temple downtown is full of them also.
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DIY Dave

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Post Mon Nov 03, 2014 3:37 am

Re: 1 1/2 inch mortise cylinders

jeffmoss26 wrote:I have a mortise lock here that takes the master ring cylinder. Our masonic temple downtown is full of them also.


Is the mortise lock also made by Corbin? I wasn't sure if those 1 1/2 cylinders were used for normal locking purposes or if they were only used in special high security locks. Are prison Mogul cylinders the same size as the master ring?
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Riyame

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Post Mon Nov 03, 2014 5:22 am

Re: 1 1/2 inch mortise cylinders

DIY Dave wrote:
jeffmoss26 wrote:I have a mortise lock here that takes the master ring cylinder. Our masonic temple downtown is full of them also.


Is the mortise lock also made by Corbin? I wasn't sure if those 1 1/2 cylinders were used for normal locking purposes or if they were only used in special high security locks. Are prison Mogul cylinders the same size as the master ring?


A number of makers made master ring size hardware. I have a master ring door hardware set made by Emhart and a MR sized mortise cylinder that takes a Best core. It was a way of master keying locks a long time ago. Prison mogul cylinders are a lot bigger than a master ring although they are basically the same kind of lock.
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jeffmoss26

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Post Mon Nov 03, 2014 12:45 pm

Re: 1 1/2 inch mortise cylinders

DIY Dave wrote:
jeffmoss26 wrote:I have a mortise lock here that takes the master ring cylinder. Our masonic temple downtown is full of them also.


Is the mortise lock also made by Corbin? I wasn't sure if those 1 1/2 cylinders were used for normal locking purposes or if they were only used in special high security locks. Are prison Mogul cylinders the same size as the master ring?


I believe my mortise lock is made by Corbin. I will take a picture tonight.
femurat: They're called restricted for a reason...
Innerpicked: The more keys you carry, the more important you look
GWiens2001: Great video! Learned a lot about what fun can be had with a forklift and a chainsaw.
pmaxey83: but i first have to submit the proper forms for a new hobby to my wife
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mastersmith

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Post Mon Nov 03, 2014 10:02 pm

Re: 1 1/2 inch mortise cylinders

Master ring cylinders are not high security. They are designed for very large master key systems. The design allows for a lot more usuable combinations since the change key uses one shear line and the master keys use the other. Many of the combinations normally resulting in cross-keying become available as the master cuts are not on that shear line.
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