[4]

Correct taper name ?

[3]
[10] Like what you see?
Click here to donate to this forum and upgrade your account!

mmcmdl

H-M Supporter - Gold Member
Staff member
H-M Supporter - Gold Member ($25)
Joined
Jan 31, 2016
Messages
1,516
This is an old Enco boring head with a 40 taper I believe . Is this called an MT 40 or what ? I can't remember !
 

Technical Ted

H-M Supporter - Gold Member
H-M Supporter - Gold Member ($25)
Joined
Nov 5, 2016
Messages
781
This is an old Enco boring head with a 40 taper I believe . Is this called an MT 40 or what ? I can't remember !
There's no picture, but maybe a CAT40? MT means Morse Taper usually...

Ted
 

BaronJ

Brass
Registered
Joined
Aug 7, 2018
Messages
660
Hi Dave,

A 40 taper is a non locking taper ! A Morse taper is the opposite, a locking taper.
You are probably referring to a NMTB 40 quick change taper.

1543855306699.png
 

JimDawson

Global Moderator
Staff member
H-M Platinum Supporter ($50)
Joined
Feb 8, 2014
Messages
7,668
Could be an NMTB 40 or Cat 40 And I think there is another that I can't remember.
 

mmcmdl

H-M Supporter - Gold Member
Staff member
H-M Supporter - Gold Member ($25)
Joined
Jan 31, 2016
Messages
1,516
Well heck , no pic ! :rolleyes:
 

mmcmdl

H-M Supporter - Gold Member
Staff member
H-M Supporter - Gold Member ($25)
Joined
Jan 31, 2016
Messages
1,516
This is it . The mind is always second to go ! Yes , this mill had a draw bar type system , 30 years ago ! Not new , no retention knobs or such .

IMG_9749.JPG

IMG_9750.JPG

IMG_9751.JPG
 

mmcmdl

H-M Supporter - Gold Member
Staff member
H-M Supporter - Gold Member ($25)
Joined
Jan 31, 2016
Messages
1,516
Thanks Jim , found it in one of my drawers . :grin:
 

JimDawson

Global Moderator
Staff member
H-M Platinum Supporter ($50)
Joined
Feb 8, 2014
Messages
7,668
Correction: I think that is an NMTB 30, looks too small for a 40
 

benmychree

John York
H-M Supporter - Gold Member ($25)
Joined
Jun 7, 2013
Messages
3,241
30 or 40, appearances are relative to the size of the boring head, some scale or measurement is necessary to determine number, but having said that, that computer plug in must be awful big to call it a 40 ------ perhaps 30 is more likely, a 30 measures about 1 1/4" diameter at the big end, a 40 measures about 1 3/4" diameter at the big end, and yes, it is the NMTB designation. CAT would have a big vee groove in the flange, which is absent in this example. The NMTB type tapers go down as small as #5, and up to #60.
 

mmcmdl

H-M Supporter - Gold Member
Staff member
H-M Supporter - Gold Member ($25)
Joined
Jan 31, 2016
Messages
1,516
Gotta be a 40 as I thought . 1.730 diameter at the large end .
 

Cooter Brown

863 Bronze
H-M Supporter - Gold Member ($25)
Joined
Nov 23, 2017
Messages
609
NMTB30,40,50 tapers can also be listed as ISO30,40,50.....
 
[6]
[5] [7]
Top