Graphical Construction Glossary >> Tools. >> Power Tools >> RPM

Revolutions Per Minute. The speed rating of a machine and the tools that are fitted to it. It is critical to use the correct tools, discs or blades in any particular machine. Over revving of disks can cause them to shatter!
Rim Speed
The speed in metres or feet per second that a cutting tool travels.
Feed Speed
The rate by which work is fed through a machine

A dremel multi-tool
  • The small saw revs faster, why is that? All woodworking cutters have a desired cutting rate, so many metres or feet per second. With round cutters and saws it is called rim speed. A smaller diameter tool has to rev faster to achieve the same cutting speed. Think about wood routers revving at 22,000 rpm.
    • That's why you should use ONLY the recommended blades sizes or cutters.
    • That's why you should let the tool do the work. By this I mean don't push it so hard that the motor is overloaded and starts to slow down.
    RPM :

    RPM :

    If you didn't find exactly what you are looking for try this search tool that will search the site and the web.

    "What can be added to the happiness of a man who is in health, out of debt, and has a clear conscience?
    Adam Smith 1723-1790

    "When we build, let us think that we build for ever."John Ruskin 1819-1900

  • coates hire
    Hire Equipment
    Furniture Fittings - Architectural Hardware - Electronic Locking Systems - Technical Hardware
    BuilderBill sponsorship

    BuilderBill Books

    building maths
    Building Maths

    Stair Design
    asbestos ebook
    Asbestos Book

    Calculator Pages.

    Concrete yardage calculator

    Reader's Questions.

    Questions and answers.



    Please Note! The information on this site is offered as a guide only!  When we are talking about areas where building regulations or safety regulations could exist,the information here could be wrong for your area.  It could be out of date!  Regulations breed faster than rabbits!
    You must check your own local conditions.
    Copyright © Bill Bradley 2007-2012. All rights reserved.
    Page copy protected against web site content infringement by Copyscape