586,067 active members*
5,047 visitors online*
Register for free
Login

Thread: Rack and Pinion

Results 1 to 2 of 2
  1. 08-09-2005, 09:57 PM #1
    Hillman
    Hillman is offline Registered
    Join Date
    Aug 2004
    Posts
    4

    Rack and Pinion

    Hi all,

    Anybody out there tell me the difference between 141/2 and 20 degree pressure
    angle?
    Which is the best for a CNC gantry application?

    Any good places to purchase on line, I've been around a dozen circles now and still can't find any.

    Thanks in advance,

    Mark
    Reply With Quote Reply With Quote
  2. 08-09-2005, 10:14 PM #2
    Al_The_Man's Avatar
    Al_The_Man
    Al_The_Man is offline Community Moderator
    Join Date
    Dec 2003
    Posts
    24221
    There is lots of previous posts on this here, 14 1/2 deg takes a larger load, 20 is a bit higher precision.Probabally 12 diametric pitch is the largest you may want to go with 20 about the smallest.
    Most large commercial gantrys use 14 1/2. Boston gear offer a economical way to go, In Canada they are carried by Bearing Supply.
    Al.
    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules