Wenzhou Prance Hydraulic Equipment Co., Ltd
Understand thermal pressure in oil trapped around a stopped hydraulic motor, why pump shutdown does not remove stored energy, and how to review protection.
Compare continuous, intermittent and peak hydraulic pump pressure ratings, load duration, relief overshoot and the evidence needed for a reliable pump selection.
Estimate hydraulic motor heat loss from pressure, flow and shaft power. Weight real duty points and separate motor losses from total system cooling demand.
Explain long-hose hydraulic motor response lag using trapped volume, compliance and pressure rise. Separate elastic storage from restriction and control delay.
Understand hydraulic motor dry-running damage, lubrication loss, safe isolation, contamination checks and documented restart decisions without risky test runs.
Distinguish proportional valve PWM switching from dither and input commands. Check driver compatibility, current control, temperature and documented settings.
Read hydraulic motor torque-speed curves using test conditions, duty points, efficiency and continuous, intermittent or peak limits without combining maxima.
Select a hydraulic brush-cutter motor by working flow, speed, torque, rotor inertia, shaft loads and stopping duty. Separate calculations from approval.
Separate proportional valve supply voltage, input command and regulated coil current. Specify amplifier compatibility, scaling, signal roles and fault behavior.
Size a proportional valve for a hydraulic motor using inlet flow, available metering pressure, both valve edges, low-speed control and throttling heat.
Calculate hydraulic motor deceleration time from inertia and braking torque, then check overrun, makeup flow, pressure, stopping energy and duty.
Define proportional valve ramp time, calculate command slope, distinguish valve response from motion, and verify startup, stopping, and feedback interactions.