[4]

Jacobs chucks

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

mf294-4

Active User
Registered
Joined
Apr 22, 2012
Messages
72
Likes
5
#1
Bought a 18N and need to remove the arbor that is in it. Is there a thru hole in the chuck? Looks like there is a hole. I had it in a press and no success. Need more press? 2nd chuck has 3/4 16 threads, does anyone make a r8 arbor for it?
 

GrayTech

Active Member
Registered
Joined
Jan 18, 2018
Messages
51
Likes
19
#2
The 18N has 4JT taper and can get quite stuck. Maybe try warming up the body a little and then more press as you put it.

Sent from my H3123 using Tapatalk
 

ddickey

H-M Supporter - Gold Member
H-M Supporter - Gold Member ($25)
Joined
Apr 21, 2016
Messages
1,719
Likes
871
#3
What size MT?
If a 5 you can get it out with a vise.
 

Bob Korves

H-M Supporter - Sustaining Member
H-M Platinum Supporter ($50)
Joined
Jul 2, 2014
Messages
5,666
Likes
5,976
#4
Bought a 18N and need to remove the arbor that is in it. Is there a thru hole in the chuck? Looks like there is a hole. I had it in a press and no success. Need more press? 2nd chuck has 3/4 16 threads, does anyone make a r8 arbor for it?
If there is not a hole visible in the chuck, you can drill one. Doing so will not damage the chuck if done properly. It is usually pretty obvious if there is a hole or just a dimple in the bottom of the chuck. You will be able to see the arbor through the hole, 1/4 - 1/2" deeper, using a good light.
 

Downwindtracker2

Active User
Registered
Joined
Sep 5, 2014
Messages
283
Likes
115
#5
Chucks wedge off, there is a slot between the two tapers. I've made the wedge with an angle grinder, but you can buy them already made. My mild steel ones weren't all that good, but did work.
 

Janderso

H-M Supporter - Sustaining Member
H-M Platinum Supporter ($50)
Joined
Mar 26, 2018
Messages
884
Likes
549
#7
The wedges are the way I have been using and all instructions seems to go that direction.
What do you do with the hole?
Drive it out?
 
[6]
[5] [7]
Top