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

DIY Dust collector motor selection

DIY Dust collector motor selection

DIY Dust collector motor selection

I'm a noob in electronics.
I'm making a dust collector for a machine shop to cleanup dust during grinding operation.
the operation lasts about a 2-3 hours so which type of motor should I use for continues 3 hour operation for a moderate suction.
I'm thinking of using 110V vacuum cleaner motor for this project (can this motor run for 3 hours straight?).

the suction pipe will be placed as shown in the image.

kindly suggest which type of motors should i use or look for while buying.

RE: DIY Dust collector motor selection

Shop vac ?

Most are very noisy, but locating it in dog house with a 4 " thick absorbent ( fiberglas insulation batting ) lining, with a decent sized hole on one side opposite the vac's discharge can help a bit. Slowing it down a bit with a cheap speed control can help too.

RE: DIY Dust collector motor selection

Not sure a shop vac is rated for 3hr continuous duty cycle.

RE: DIY Dust collector motor selection

A shop vac will work okay. It will have a limited life due to brush wear but is very compact, cheap, and easy to install. They are so cheap you can consider them disposable. It provides relatively high suction, so you can get good air flow through a smaller collection tube. Induction motors are much more suited for continuous operation. A shop saw dust collector will also do the job.


RE: DIY Dust collector motor selection

When collecting duct from grinding operations even ones which are "wet" - there is a coolant nozzle aimed at the work zone in the picture - there is a risk of metal fines fire. The risk can be reduced by using metal exhaust ducts long enough for sparks cool before they reach the collection device.

Collecting dusts from wet grinding also collects some of the grinding fluid, which can blind filters, and stick to the insides of your ducts (periodic cleaning is desirable).

Industrial Ventilation: A Manual of Recommended Practice for Design, published by American Conference of Governmental Industrial Hygienists (ACGIH®) is a enormously useful reference when working with any sort of process dust engineering control. https://www.acgih.org/forms/store/ProductFormPubli.... This book explains many of the details you need to understand to make any process exhaust system work.

Bench testing a shop vac powered local exhaust system is not a bad place to start, but it is unlikely that will be your final system.


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


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