ewlsey
Diamond
- Joined
- Jul 14, 2009
- Location
- Peoria, IL
I'm working on a machine with a Vickers angular piston hydraulic motor that turns a lead screw and moves part of the machine. This is a fixed displacement motor.
The system runs at 600psi. Apparently it was working fine and then suddenly it stopped turning the screw. I turned the system pressure up to 800 and it seems turn fine.
So, what can cause a sudden loss of torque in a hydraulic motor? It's supposed to have 1 ft-lb / 100 psi, so it should have 6 ft-lbs at normal pressure, but I can easily stop the motor by grabbing the hand wheel on the lead screw. I pulled the line off the case drain and there's barely a drip.
Any thoughts?
The system runs at 600psi. Apparently it was working fine and then suddenly it stopped turning the screw. I turned the system pressure up to 800 and it seems turn fine.
So, what can cause a sudden loss of torque in a hydraulic motor? It's supposed to have 1 ft-lb / 100 psi, so it should have 6 ft-lbs at normal pressure, but I can easily stop the motor by grabbing the hand wheel on the lead screw. I pulled the line off the case drain and there's barely a drip.
Any thoughts?