Problem with Mitachi M12V bit climb - Router Forums
 
LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old 09-24-2005, 02:06 PM Thread Starter
Registered User
 
Join Date: Sep 2004
Country: United States
First Name: Brian
Posts: 15
 
Default Problem with Mitachi M12V bit climb

I bought this machine a while ago and use it for the first time today.

I was routing a rabbet in the back of bookcase standards to receive the 1/2" plywood back. The bit was a Porter Cable rabbret bit with a bottom guide bearing. The shaft was 1/4" --- that's all I could find at HD.

Anyway, I chuck up the 1/4" sleeve in the collet and insert the bit. The router stalled and I noticed the bit was climbing out. I tightened it again and the same thing happened.

I finisihed the job with my PC690 with no problems.

Any thoughts on why this happened? Yes I locked the collet with the sliding metal plate and then wrenched it.

Thanks.
Unisaw is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 09-24-2005, 03:14 PM
Registered User
 
Join Date: Oct 2004
Country: United States
First Name: Richard
Posts: 387
 
Default

I would check the sleeve for cracks, and check the collet to see if every thing is clear of rust and or dirt. I hope the collet has not been cross threaded.
Woodnut65
Woodnut65 is offline  
post #3 of 9 (permalink) Old 09-24-2005, 03:47 PM Thread Starter
Registered User
 
Join Date: Sep 2004
Country: United States
First Name: Brian
Posts: 15
 
Default

The sleeve does have vertical cracks by design. They allow it to close when the collet is tightened.
Unisaw is offline  
Sponsored Links
Advertisement
 
post #4 of 9 (permalink) Old 09-25-2005, 09:50 AM
Registered User
 
steveo's Avatar
 
Join Date: Sep 2004
Country: United States
First Name: Steve
Posts: 194
 
Default

Quote:
Originally Posted by Unisaw
The sleeve does have vertical cracks by design. They allow it to close when the collet is tightened.
Agreed, I have two M12V's. The so called "cracks" on the 1/4" reducing collet must line up with the "cracks" on the 1/2" collet when inserting a 1/4" dia bit into the smaller collet. This allows for proper contraction of both collets when tightening the smaller bit.
I'm sure that is the problem you are having.
steveo
steveo is offline  
post #5 of 9 (permalink) Old 09-25-2005, 10:46 AM Thread Starter
Registered User
 
Join Date: Sep 2004
Country: United States
First Name: Brian
Posts: 15
 
Default

Thanks. I did not know that the cracks had to be aligned. The directions with this are less than stellar.
Unisaw is offline  
post #6 of 9 (permalink) Old 09-25-2005, 08:08 PM
Registered User
 
Join Date: Sep 2004
Country: United States
First Name: Charles
Posts: 143
 
Default

Hi Unisaw,
I've had an M12V for a few years and found almost immediately that I wasn't comfortable with the slide lock and only one wrench. Initially I had the M12V mounted in my router table. My concerns were realized when a large round over walked out of the collet. Luckly no one was hurt. Since then I have used 2 wrenches to tighten the collet. The second wrench needed is an odd size (23 MM) and hard to find so I made one. Since then I've had no problems with bits, 1/2" or 1/4" shank, walking out. I was too embarassed to call Hitachi and complain.
I believe using 2 wrenches is a more permanent fix to the loose bit problem.
Good luck with it,
Chuck

PopPop

If it's worth building, It's worth building well.

[email protected]
Pop_pop1 is offline  
post #7 of 9 (permalink) Old 09-25-2005, 08:43 PM Thread Starter
Registered User
 
Join Date: Sep 2004
Country: United States
First Name: Brian
Posts: 15
 
Default

Thanks. I thought it was me. I hate the slide lock. It is hard to use and I have a low sense of comfort - translate - I don't have a sense of safety when I lock it down.
Unisaw is offline  
post #8 of 9 (permalink) Old 09-25-2005, 08:45 PM
Registered User
 
steveo's Avatar
 
Join Date: Sep 2004
Country: United States
First Name: Steve
Posts: 194
 
Default

Quote:
Originally Posted by Pop_pop1
Hi Unisaw,
I've had an M12V for a few years and found almost immediately that I wasn't comfortable with the slide lock and only one wrench. Initially I had the M12V mounted in my router table. My concerns were realized when a large round over walked out of the collet. Luckly no one was hurt. Since then I have used 2 wrenches to tighten the collet. The second wrench needed is an odd size (23 MM) and hard to find so I made one. Since then I've had no problems with bits, 1/2" or 1/4" shank, walking out. I was too embarassed to call Hitachi and complain.
I believe using 2 wrenches is a more permanent fix to the loose bit problem.
Good luck with it,
Chuck
The first thing to do when opening a box with a new router is to take the "stamped" wrench that comes with the unit and open the shop door and throw it as far as you can, then get yourself a real wrench or two.
steveo
steveo is offline  
post #9 of 9 (permalink) Old 12-06-2005, 06:48 PM
 
Join Date: Aug 2005
Posts: 42
 
Default

I plan on picking up 2 [new] wrenches for my M12V; one is a 21mm while the other should be a 23mm wrench. Are these the correct sizes?
Thanks
kenadian is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Router Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Setting the proper RPM on the Hitachi M12V jrs4464 General Routing 5 01-10-2007 10:34 PM
M12V pricing/seller dtaylor15 General Routing 1 01-28-2006 12:41 AM
Problem with my Hitachi M12V Visteonguy Table-mounted Routing 23 08-19-2005 12:22 AM
Opening size in router table problem glassguy1456 Table-mounted Routing 2 02-28-2005 08:09 AM
Hitachi M12V Router Problem dcarriere Tools and Woodworking 3 12-28-2004 07:50 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome