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Machine Shop and Tool Talk Shop Equipment, fabrication, repairs, how to fix it, which tool to use for the job. Machinist shop talk, straight to the point.

Machine Shop and Tool Talk

Van Norman 777S4


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  #21  
Old 05-31-2017, 08:19:06 AM
Kirk Taylor Kirk Taylor is offline
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Default Re: Van Norman 777S4

Quote:
Originally Posted by storm View Post
another question is the shaft on the 777s4 bar thicker than a 777.mine measures about 2 1/2.theres a reason for this question as i ordered a short bit holder for a 777 thinking its the same now im wondering.
The column on the 777(s) is a little over 2˝" in diameter. The small tool holder is for bores of 2.55" - 4.00"; the large tool holder is for 4.00" - 5.35".
What is your concern?
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  #22  
Old 05-31-2017, 09:45:35 AM
J.B. Castagnos J.B. Castagnos is offline
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Default Re: Van Norman 777S4

I think there are two different size cutters for the small machines, the 888 takes an even larger one. I thought the 944 & 777 used different cutters, but I've seen large and small on either, not talking about length, the receptacle is different. The cutter heads may be interchangeable, not sure.
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  #23  
Old 06-02-2017, 12:28:30 PM
storm storm is offline
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Default Re: Van Norman 777S4

i got taken what else is new this thing doesnt cut past about 3 inches.if i had a longer screw it might cut 3.3 buyer beware on ebay i should have known better.this thing is only 1.25 long anyone know the lenght i need.the one i have is 2.25
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  #24  
Old 06-03-2017, 06:59:30 AM
storm storm is offline
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Default Re: Van Norman 777S4

is it possiable just to buy a longer screw to make this work and if so how long.you do need a cutter this short to bore 2.55 bore.it says nothing about different screws i my operation manual.
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  #25  
Old 06-03-2017, 03:28:41 PM
J.B. Castagnos J.B. Castagnos is offline
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Default Re: Van Norman 777S4

There are different length cutter blocks, too short overextended will chatter.
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  #26  
Old 06-03-2017, 07:18:49 PM
storm storm is offline
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Default Re: Van Norman 777S4

i know there are different holders i only want to know the one in my operators manual with number 777 7177.i have 178 which is 2 1/4 inch.what do they do with this 177 to make it cut 2.55 to 4 inch.seems hard to believe.
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