×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Choice of motor for building sanding station

Choice of motor for building sanding station

Choice of motor for building sanding station

(OP)
Hi - I am building a small sanding station for sanding wood. It will consist of a small motor directly coupled to an 8" sanding disk, turning at about 3000 rpm
I am looking to find out suggestions for a cheap and available motor to drive the disk. What do I need to look out for? should it be an induction motor? will a washing machine motor do? How many horsepower?

Regards
Neil

RE: Choice of motor for building sanding station

Suggestions/Questions:
It depends if you happen to be interested in the variable speed. In that case, the motor needs to be rated for the inverter duty and it is more expensive. Normal one- or three-phase motor runs at approximately 1800RPM and 3600RPM single speed (less expensive) or two speed (more expensive). A universal motor could also be proper and suit the speed control; especially, if needed above 3600RPM. The size of the motor about 1.5HP appears to be sufficient, unless you are pressing on the sander very hard. The washing machine motor could potentially fit there. It depends on its ratings. If you consider a speed drive and seeing some available products, check the attached web sites.
1. Are you sure that 3000RPM is a suitable speed for various sanding? See
http://www.storesonline.com/site/228387/product/CP777
for speed 900RPM of pneumatic 8" sander/polisher
2. However, there is a polisher/sander with variable speed drive of 115VAC, 1-phase, 10A, (~1.5HP) motor as you can see on
http://www.storesonline.com/site/228387/product/Mak9227C
3. Another one uses variable speed 0-1000RPM, and 3000RPM with 120VAC, 8A, (~1.25HP) 1-phase motor as can be seen on
http://www.storesonline.com/site/228387/product/Dw849
4. This one has also variable speed 115VAC, 6.8A, (~1HP) 1-phase motor as may be seen on
http://www.homelumbercom.com

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close