×
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

High Power hydraulic motor

High Power hydraulic motor

High Power hydraulic motor

(OP)
I am looking for hydraulic motor to drive rotary screw pump.
Power >360kW at 1800RPM , Torque approx. 1950 Nm
Speed : 1800RPM-normal and variable.

Any one can recommend a maker?

TQ.

RE: High Power hydraulic motor

Your choice at this end of the product lines is a little limited.

Try Eaton Vickers (Hydrokraft MFW 500) or Bosch Rexroth (A2FM500 or A4FM500).

I've suggested a 500 cc/rev motor because this will give you about 7.5 Nm per bar. You can get your 1950 Nm at a typical working pressure of 280 bar (I've added on 20 bar for boost pressure - assuming you'll be running in a closed circuit). You could possibly drop down to a size 355 motor (Rexroth) but this puts the pressure up to some uncomfortable values which can dramtically shorten the life of the motor. The A2FM500 motor will allow you a top speed of 2000 rpm.

If you need to go faster then you could consider a variable diaplecemnt motor and reduce the displacement a little to permit the higher speed operation (a Rexroth A6VM500 destroked to 75% will allow a speed of 2650 rpm).

You could consider a pair of smaller swash plate motors (A4FM250) arranged as a tandem unit (one plugged into the back of the other) - the smaller motors can run faster, you need two of them to get your torque.

Regards

DOL

RE: High Power hydraulic motor

(OP)
DOL,
Thanks for your info

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