Welcome, Guest. Please login or register.
Did you miss your activation email?
February 11, 2016, 02:06:44 PM

Login with username, password and session length
Search:     Advanced search
* Home Help Search Calendar Links Login Register
+  Machsupport Forum
|-+  Tangent Corner
| |-+  Tangent Corner
| | |-+  Mill head motor retrofit
Pages: 1   Go Down
Print
Author Topic: Mill head motor retrofit  (Read 1673 times)
0 Members and 1 Guest are viewing this topic.
Overloaded
Global Moderator
*
Online Online

Posts: 4,548


View Profile
« on: March 08, 2011, 10:27:35 PM »

Howdy all,
  My Supermax mill has a busted up pulley in the head.  Sad (not much unlike mine  Roll Eyes )
Anyway, it is very similar to a BP Variable type except there is no "step down" on the top of the upper housing.

I want to replace the original motor with an inverter duty motor that I have and use a VFD.
I can easily modify the mounting for this but am looking for advise on what pulley type and size to use.
Should I gear it UP ? or DOWN ? or 1:1 ?   Undecided
Single or double V ... or timing type ? Size ?   Undecided

 My little 1hp BP (8 speed) only has 1 seemingly small V belt.

It's just 2 HP and the motor is rated to 5200 RPM.
It will also produce 2 HP at very low rpm so I might not even need the backgear but it will be there if I do need it.
Thanks,
Russ
Logged
Overloaded
Global Moderator
*
Online Online

Posts: 4,548


View Profile
« Reply #1 on: March 09, 2011, 04:56:28 PM »

Ok, so I went ahead and ordered 2 double "A" (1/2") V-belt pulleys.
4.25" and 3.75" with taper lock bushings.
They will interchange so I have the option of  1.13:1 or .88:1
Planning to go with the reduction.
Russ
Logged
Graham Waterworth
Administrator
*
Online Online

Posts: 1,787


West Yorkshire, England



View Profile WWW
« Reply #2 on: March 11, 2011, 05:14:53 AM »

I would go with the .88 ratio too, better to have that little bit more torque than the extra 600 revs. The V belts should run quieter at high revs, from experience tooth belts at above 4000 rpm get very noisy.

But that's only my opinion  Grin

Graham
Logged

G-Code is on the cutting edge

Autovalues Engineering, CNC machining specialists, Bradford, England
Overloaded
Global Moderator
*
Online Online

Posts: 4,548


View Profile
« Reply #3 on: March 11, 2011, 07:24:08 AM »

I highly value your opinions Graham, even when they are in agreement with my own. Grin
Thanks,
Russ
 Smiley
Logged
edvaness
Active Member

Offline Offline

Posts: 500



View Profile
« Reply #4 on: March 15, 2011, 05:15:08 PM »

I agree, you need the power over the speed.
Logged

Ed VanEss
Pages: 1   Go Up
Print
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.20 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!