I am interested to design an electro hydrostatic actuator (EHA) for a robotic system. The EHA should have 20N.m maximum torque, position tracking bandwidth of 10HZ, and overal weight of 2 kgs. I have searched a lot to find a compact reversible gear pump or a compact power pack. However, most of industrial pumps and power packs are heavy and bulky. I will be appreciated if someone can introduce an appropriate product for my purpose.
hope this helps you
http://www.aliexpress.com/cheap/cheap-electric-hydraulic-actuator.html
https://www.alibaba.com/showroom/electro-hydraulic-actuator.html
Yasser
I do not if you have tried them or not but MOOG corperation specializes in these and may be able to adapt a current application or help you design something custom.
Not sure this will help you,
Sincerely,
Glenn Young
Hello,
Maybe have a look at Parker's :
Regards
http://ph.parker.com/us/en/hydraulic-rotary-actuators
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