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Bent axis or not bent axis in a flow divider application

Bent axis or not bent axis in a flow divider application

(OP)
We are wanting to use a couple of piston motors coupled together to use as a rotary flow divider. Gear type dividers are commonplace and to a lesser extent bent axis motors are used in rotary flow divider applications.
We wish to use axial piston motors (swash plate type), Eaton 73418 motors for a variety of reasons, our problem is that we are unable to find any application information whereby these motor types have been used in this application. Does anybody know why one should not use a swash plate motor (fixed displacement) in a flow divider application?

Any and all comments greatly appreciated.

RE: Bent axis or not bent axis in a flow divider application

Eaton should know; I don't.

Mike Halloran
Pembroke Pines, FL, USA

RE: Bent axis or not bent axis in a flow divider application

Wouldn't cost be one of the main factors?

Bent axis action isn't much different from axial swash plate action, so that's probably not it. They would be exposed to the potential for high back-pressures - not a good thing for motors, but again, it should affect both types the same.

I just keep drifting to cost.

RE: Bent axis or not bent axis in a flow divider application

(OP)
Cost is a consideration but the bent axis motors are generally way more expensive than the swash plate motors so I am not sure that cost is a factor - I am still wondering if there is a technical factor we are not aware of???

RE: Bent axis or not bent axis in a flow divider application


You can use your eaton motors for this application. Provided that the maximum speeds and maximum pressures are respected. Obviously the drains must return to the tank without large counter pressure.
Simply know that a swash plate motor has a worse mechanical efficiency and more internal leakage than a ben axis motor.

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