Schlage IC cylinders, open top vs closed top

[WOT]

There are two versions. open top with a sheet spring cap and sealed top. Why two versions?



The sealed top version has indentations on the bottom that corresponds to each stack position, but there's nothing on the open top version. What are these for? They don't actually go inside the cylinder.

[selim]

I deal with a-lot of I.C. cores at work,sargent being the most difficult for me.
I've noticed with the schlage's only the knock-off brand's that just use the "C" keyway have the solid tops. Never noticed it with the I.C's though. I'll check the stock today. I also don't recall any knock-off brand's making schlage I.C.'s.
Are you sure your dealing with an interchangable core?

Tom

[WOT]

I deal with a-lot of I.C. cores at work,sargent being the most difficult for me.
I've noticed with the schlage's only the knock-off brand's that just use the "C" keyway have the solid tops. Never noticed it with the I.C's though. I'll check the stock today. I also don't recall any knock-off brand's making schlage I.C.'s.
Are you sure your dealing with an interchangable core?

Tom

Yes, they absolutely are full size ICs. There are more than one types of Schlage fullsize ICs. You have to remove the cylinder with the type I posted.






Not a big deal for padlock.

Another type uses a control key which is basically the samething as an operating key to manipulate the 7th pin used to release the core form cylinder.

[keysman]

Wot
That is a standard core... LFIC looks similiar to that .. the figure 8 face is integral and does not come apart in LFIC.. I don't have my camera here but will look for some pics to show the differance

[WOT]

Wot
That is a standard core... LFIC looks similiar to that .. the figure 8 face is integral and does not come apart in LFIC.. I don't have my camera here but will look for some pics to show the differance

So, they don't call this one an interchangeable core?

[raimundo]

when i saw the title of the thread, I immediatly got the idea that someone was going to talk about putting one of the key controlled schlage IC cores back together without the cap. which may not function well and would certainly be a big surprise to any locksmith who encountered it.

Actually, I don't have a cylinder here so I don't know if the cores have a cap or not.

Clearly the two types are different approaches to the design of the machine that drills and fills the cylinders. I would not be surprised to see two types of machines of different cronologys being used in the same plant.

[keysman]

So, they don't call this one an interchangeable core?

Not in the true sense of the term ...at least it is NOT a small format ( Best style) or Large format IC

Olympus locks has some photos of locks that use LFIC

http://www.olympus-lock.com/PDF/newsletter-Dec06.pdf

Of course wikipedia has some info

http://en.wikipedia.org/wiki/Interchangeable_core


William Lynk has as service manual for his cores , but it applies to many other manufacturers as well


http://www.iclsglobal.com/TechManual.html


there are pictures and descriptions in this PDF from Schlage

http://professional.schlage.com/pdfs/li ... l_2007.pdf

Hope this helps

[WOT]

So... anyone know what the indentations on the bottom of the cylinder are used for?

[Beyond]

Not that this will have any determination on any of this but out of curiosity, what pinning systems are utilized in each of these cylinders?

[Beyond]

It's not a SFIC. From my understanding of the word, SFIC refers to any BEST Style lock. Schlage IC cores are not even BEST compatible.

I'll try to provide some insight on Schlage IC cores to the best of my ability. First, they are IC cores. These were introduced in 1984, although the ones you have pictured are more than likely revised editions that corrected a flaw. From what I can gather, that change happened in May of 1991.

WOT, you are correct. They have 6 pin, standard chambers with an extra pin chamber at the very back. That last pin is the control pin. You have an actuating ring and pin that can be seen at the back of the lock. These two parts allow the core to be operated by the control key without control pins or a control shear line/sleeve.

Normal change keys only utilize the 6 pins, a change key for a Schlage IC utilizes the 6 pins plus the control pin. Without getting specific, only a key with the correct cuts and the extra portion will allow a control key operation to work. It lifts all the pin stacks to their appropriate spot along with the control pin and rotates 15degrees.

Sorry for the delayed response, I just wanted to see what people had to say before I chimed in.

[vitti]

I would have to assume that the holes in the bottom are holdovers from the machining process. The sealed top is probably never drilled and filled. Rather the bible is drilled through the bottom of the core, leaving the top solid. Then the bottom holes would be filled. I assume that filling only part of the hole was probably a cost saving decision as filling all the way would not be necessary for the lock to function but left unfilled pins would hang if the plug were turned 180 degrees. You might be able to see the where the holes were filled on the inside if this is the case.

Of course I could be completely wrong but it makes sense.

[Beyond]

The holes are for the ejector pin tool. They aid in servicing the locks.

[Beyond]

http://professional.schlage.com/pdfs/pc ... manual.pdf

Page 4 (5 if viewed in Adobe Reader), step 5.

Schlage refers to them as "ejector holes". Never knew there was a name for them.

[WOT]

I didn't say anywhere that these are SF(small format) IC cores.

There is no hole. Those indentations on the bottom look mostly cosmetic. They do not go through the core.

[Beyond]

I didn't say anywhere that these are SF(small format) IC cores.

Well it obviously wasn't directed towards you then.

There is no hole. Those indentations on the bottom look mostly cosmetic. They do not go through the core.

As if I couldn't tell from the picture (sarcasm). I was just explaining what the actual holes were used for.