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Linley Jig Bore Information Wanted
- Thread starter ksierens
- Start date
- Joined
- Dec 6, 2012
- Messages
- 2,677
While I've never used one that is my understanding. Strictly vertical.
However, beware that prior to you scoring the machine someone may have abused her by pretending she was a mill.
Daryl
MN
- Joined
- Dec 6, 2012
- Messages
- 2,677
I've attached multiple documents on bearings and bushings, perhaps one of these is helpful.
Not light reading. But there are is powerful data in these docs on the general principles.
These documents help me to understand why they get so much money for some bearings.
A internet search suggests that Norma merged with Hoffman in the 60s, and was likely later absorbed by a different manufacture.
I think you are going to need to begin calling some of the bearing distributors or manufactures.
You will need to find someone with a Norma cross reference document if you want to get the same construction.
Likely Linley chose that construction for a specific reason.
Another alternative (which I'm not recommending) is to get a precision bearing and have bearings ground to make up the difference is spacing.
This may take some prep work and a day of patient phone calls to get anywhere.
Please let us know what you discover. I suggest chasing the equivalent. If you decide not to purchase it due to price you might likely find something which will at least fit.
Daryl
MN
Not light reading. But there are is powerful data in these docs on the general principles.
These documents help me to understand why they get so much money for some bearings.
A internet search suggests that Norma merged with Hoffman in the 60s, and was likely later absorbed by a different manufacture.
I think you are going to need to begin calling some of the bearing distributors or manufactures.
You will need to find someone with a Norma cross reference document if you want to get the same construction.
Likely Linley chose that construction for a specific reason.
Another alternative (which I'm not recommending) is to get a precision bearing and have bearings ground to make up the difference is spacing.
This may take some prep work and a day of patient phone calls to get anywhere.
Please let us know what you discover. I suggest chasing the equivalent. If you decide not to purchase it due to price you might likely find something which will at least fit.
Daryl
MN
- Joined
- Mar 26, 2018
- Messages
- 8,407
Dan Gelbart and Don Bailey exposed me to a Moore Jig bore machine.
When you need to open up a bore by .0002" and the jig bore is your solution, that's a pretty cool machine!!
I understand there are still quite a few floating around. Because of the high precision applications, many of them have had good care.
Not to mention the high initial cost of the machine tools.