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    Default Taper pin question

    I have a German machine I am working on , it has Metric taper pins , 10X50 mm pins. I can find metric pins at Granger and McMaster but I cannot determine the reamer . Are metric and standard taper pins the same degree of angle ? \

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    Metric taper pins are hard to find inthe US for some reason. Got a European source?

    If this is for in-house use, it's probably simpler to re-ream the pinholes and use Imperial pins, The taper is close 1./48 vs 1/50 and I've never seen a taper pin fitted to stock length except in brand new equipment. Generally, you have to cut and fit each one to suit the re-reamed hole it's made for.

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    Quote Originally Posted by jumpinjimmy447 View Post
    I have a German machine I am working on , it has Metric taper pins , 10X50 mm pins. I can find metric pins at Granger and McMaster but I cannot determine the reamer . Are metric and standard taper pins the same degree of angle ? \
    .
    no taper angle is different

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    Yes they are NOT the same taper. An imperial is 1:48 so 1/4" per foot, a metric is 1:50 so the taper is 1mm each 50mm, or about 6.09mm per foot or .241 inches per foot. close but not the same.

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    Quote Originally Posted by jumpinjimmy447 View Post
    I have a German machine I am working on , it has Metric taper pins , 10X50 mm pins. I can find metric pins at Granger and McMaster but I cannot determine the reamer . Are metric and standard taper pins the same degree of angle ? \
    Metric pins are 1:50 .

    I used to ream A LOT in printing machines and I found that taper reamers must be of good quality.

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    THANK YOU GUYS SO MUCH !! helped me a lot . just had to stop the tec from reaming the holes with my #7 pin reamer . I was telling them it appeared the same but I was not 100% sure . not a big difference but I will let others make the call what they want to do . Thanks

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    Quote Originally Posted by AlexO View Post
    Metric pins are 1:50 .

    I used to ream A LOT in printing machines and I found that taper reamers must be of good quality.
    That's funny , we manufacture containers from paper for fast food , our print presses used to all be USA machines , that's why I'm the only guy in the plant that even have taper pin reamers. LOL

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    Why not just ream for an inch pin and install that? You're already reaming.

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    Talking of taper pins - aren't they a horrendous price? ..especially the small sizes, ......what we used to buy by the gross - and latterly 100, are now sold singly.

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    You can buy 1:50 taper pins and reamers from ebay.de. Search for Kegelstifte and Kegelreibahle respectively.


    Sent from my iPhone using Tapatalk

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    McMaster Carr:McMaster-Carr

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    If you're going to do more than a couple of holes spend the extra to get the reverse spiral reamers - they eject the chips out the front of the hole and work a lot faster than straight flute reamers, faster enough that you have to take a little care in the work.

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    Quote Originally Posted by rke[pler View Post
    If you're going to do more than a couple of holes spend the extra to get the reverse spiral reamers - they eject the chips out the front of the hole and work a lot faster than straight flute reamers, faster enough that you have to take a little care in the work.
    Yes that's true, but they also like to wander more than straight flutes, so they are not so suitable for careful hand reaming. Read dangerous.

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    Quote Originally Posted by ewlsey View Post
    Why not just ream for an inch pin and install that? You're already reaming.
    Well normally I would , but the machine is a million bucks or more , they flew a guy from Germany here to over see the repair , if they want metric pins , they get metric pins .

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    Quote Originally Posted by jumpinjimmy447 View Post
    if they want metric pins , they get metric pins .
    Understood.

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    All world machinery
    in Chicago (Harvey)
    for metric taper pins with tapped hole in big end

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    Here's a good source of metric pull pins in small quantities - DIN 7978A Taper Pull Pins

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    Quote Originally Posted by wippin' boy View Post
    All world machinery
    in Chicago (Harvey)
    for metric taper pins with tapped hole in big end
    All World is in Machesney Park, IL on the north side of Rockford. Great company.


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