tapers
I am trying to identify a taper on a drive centre and it does not appear to
be a Morse taper. The dimensions I have are as follows: Length of taper 40mm (1.575") Large diameter 12mm (0.472") Small diameter 10.27mm (0.404") I measured the diameters as near the end of the taper as I could so please do not take these measurements as gospel - they are there or thereabouts. I suspect the taper is metric but I cannot find a source to prove this. Can anyone offer any help? Regards, T. |
In article , "Trevor" wrote:
I am trying to identify a taper on a drive centre and it does not appear to be a Morse taper. The dimensions I have are as follows: Length of taper 40mm (1.575") Large diameter 12mm (0.472") Small diameter 10.27mm (0.404") Amount of taper: 0.068" Taper per inch of length: 0.0432- I measured the diameters as near the end of the taper as I could so please do not take these measurements as gospel - they are there or thereabouts. I suspect the taper is metric but I cannot find a source to prove this. Can anyone offer any help? I think you have a #1 Morse taper. I measured one of mine: length of taper 1.850" large diameter 0.500" small diameter 0.420" amount of taper: 0.080" taper per inch of length: 0.0432+ In other words, the degree of taper on yours is essentially the same as the degree of taper on mine. Yours has a bit more at the narrow end than mine, and a bit less at the fat end, and it's shorter overall, but the angles are the same. I *know* mine is a #1 Morse. Sounds to me like yours is too. |
Beg , buy, borrow or steal a MT1 tapered fitment. Clean male & female
tapers. Chalk or ink the male taper. insert into spindle and twist once. remove straight out. If the coating is smeared evenly, that's your taper. In shorter words, fit , instead of measure. Turn to Safety, Arch Fortiter http://community.webtv.net/almcc/MacsMusings |
"Arch" wrote: (clip) In shorter words, fit , instead of measure. ^^^^^^^^^^^^^^ Arch, that is much easier to do now that Doug has spoken. |
Right Leo,
.....and even easier if there is a machinist's handbook on the coffee table.;) I shudda suggested getting MT1 & MT2 to try, before Doug spoke. Turn to Safety, Arch Fortiter http://community.webtv.net/almcc/MacsMusings |
Thanks for the info. I will borrow a MT sleeve and check it against that.
I also have a revolving centre, again with strange dimensions (length). Is it possible that this may be a #2MT. Again I will try and borrow a suitable sleeve to try it. The dimensions a Length 50mm (1.968") Large diameter 17mm (0.669") Small diameter 14.5mm (0.571") Thanks again for your help. Regards, T "Doug Miller" wrote in message . .. In article , "Trevor" wrote: I am trying to identify a taper on a drive centre and it does not appear to be a Morse taper. The dimensions I have are as follows: Length of taper 40mm (1.575") Large diameter 12mm (0.472") Small diameter 10.27mm (0.404") Amount of taper: 0.068" Taper per inch of length: 0.0432- I measured the diameters as near the end of the taper as I could so please do not take these measurements as gospel - they are there or thereabouts. I suspect the taper is metric but I cannot find a source to prove this. Can anyone offer any help? I think you have a #1 Morse taper. I measured one of mine: length of taper 1.850" large diameter 0.500" small diameter 0.420" amount of taper: 0.080" taper per inch of length: 0.0432+ In other words, the degree of taper on yours is essentially the same as the degree of taper on mine. Yours has a bit more at the narrow end than mine, and a bit less at the fat end, and it's shorter overall, but the angles are the same. I *know* mine is a #1 Morse. Sounds to me like yours is too. |
In article , "Trevor" wrote:
Thanks for the info. I will borrow a MT sleeve and check it against that. I also have a revolving centre, again with strange dimensions (length). Is it possible that this may be a #2MT. Again I will try and borrow a suitable sleeve to try it. The dimensions a Length 50mm (1.968") Large diameter 17mm (0.669") Small diameter 14.5mm (0.571") Taper = 0.669 - 0.571 = 0.098" Taper per inch of length = 0.098 / 1.968 = 0.0498 Using the metric figures, taper per mm comes out at exactly 0.05 (2.5mm taper along 50 mm length). I think this is not a #2 MT. Here are my measurements on a drive center that came with my #2 MT lathe: Length 2.500 Large dia: 0.700" Small dia: 0.579" Taper = 0.700 - 0.579 = 0.121" Taper per inch of length = 0.121 / 2.500 = 0.484 -- Regards, Doug Miller (alphageek-at-milmac-dot-com) Get a copy of my NEW AND IMPROVED TrollFilter for NewsProxy/Nfilter by sending email to autoresponder at filterinfo-at-milmac-dot-com You must use your REAL email address to get a response. |
"Doug Miller" wrote in message .. . In article , "Trevor" wrote: Thanks for the info. I will borrow a MT sleeve and check it against that. I also have a revolving centre, again with strange dimensions (length). Is it possible that this may be a #2MT. Again I will try and borrow a suitable sleeve to try it. The dimensions a Length 50mm (1.968") Large diameter 17mm (0.669") Small diameter 14.5mm (0.571") here are the 'theoretical' dimensions for a Morse #2 taper, may be of some help CBII ---------------------------------------------------------------------------- - Taper Name Large Taper/ Taper/ Angle Small Length End Foot Inch From End Center ------------------------------------------------------------------------- #2 Morse 0.7000 .5994 . 0500 1.4307 0.5720 2.56 ------------------------------------------------------------------- Taper = 0.669 - 0.571 = 0.098" Taper per inch of length = 0.098 / 1.968 = 0.0498 Using the metric figures, taper per mm comes out at exactly 0.05 (2.5mm taper along 50 mm length). I think this is not a #2 MT. Here are my measurements on a drive center that came with my #2 MT lathe: Length 2.500 Large dia: 0.700" Small dia: 0.579" Taper = 0.700 - 0.579 = 0.121" Taper per inch of length = 0.121 / 2.500 = 0.484 -- Regards, Doug Miller (alphageek-at-milmac-dot-com) Get a copy of my NEW AND IMPROVED TrollFilter for NewsProxy/Nfilter by sending email to autoresponder at filterinfo-at-milmac-dot-com You must use your REAL email address to get a response. |
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I am trying to identify a taper on a drive centre and it does not appear
to be a Morse taper. The dimensions I have are as follows: I suspect the taper is metric but I cannot find a source to prove this. Let's face it. If its a wood lathe, then the chances of it being a Morse Taper is in the vicinity of 99 out of a 100. Rather than 'cuss and discuss' it, why not just try a MT and see if it works? Dan |
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