×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

Parking brake for a shaft/motor/ball screw

Parking brake for a shaft/motor/ball screw

Parking brake for a shaft/motor/ball screw

(OP)
Hello,
I'm working on something that will use a ball screw. I'd hoped to use a lead screw so it couldn't be back driven but this is proving very difficult. So I'm going back to plan A a ball screw but trying to find a brake to stop it being back driven. This would be be to fit on a shaft about 28mm diameter and to restrain a torque of ~15Nm. The brake doesn't need to slow the shaft down, just to stop if from rotating. The shaft probably won't stop in exactly the same rotation position each time. Ideally this would be magnetically controlled so that if power was lost the brake would release.
Could someone point me in the direction of a brake like this?
Thanks
George

RE: Parking brake for a shaft/motor/ball screw

If your drive uses an electric motor, you can purchase servomotors that have an integral friction brake. The friction brake is engaged when the motor stops driving, and it disengages when the motor starts driving.

RE: Parking brake for a shaft/motor/ball screw

There are lots of different kinds of brakes. They vary in design, function, durability, operation, etc. Sounds like you want a spring-engaged brake (failsafe on). You can operate it manually, or with air, or electric signal. Check ThomasRegister.com or any good local power transmission distributor (like Motion Industries or Grainger). Also, most ballscrew suppliers could recommend some options for you.

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!


Resources