Selecting hydraulic motors and a pump for hydrostatic transmission
Nov 19, 2020 · DC motors at front wheels, with a constant current, have fixed torque. Speed is not important. Hydraulic motors at front wheels, have constant pressure, so have fixed torque at any road speed. At maximum RPM, in top gear, pump must …
Hydraulic Pump/Motor: Can it Work as a Motor? - Physics Forums
Apr 14, 2015 · A hydraulic motor may be designed for bi-directional operation. It can be operated with positive pressure on both ports. Bidirectional motors will have a third connection to drain fluid to the reservoir tank that leaks past the internal seals. …
Can a Gear-Pump Be Used as a Motor for a Simple Steam Engine?
Jul 10, 2007 · Some gear-pumps also have variable speed drives that allow for precise speed control. What types of applications are gear-pump motors commonly used for? Gear-pump motors are commonly used in various industrial and commercial applications, such as in hydraulic systems, lubrication systems, and chemical processing.
How Does a Hydraulic Motor Function in a System? - Physics Forums
Oct 31, 2010 · In summary, hydraulic motors work by using fluid under pressure to push against vanes attached to a shaft, causing it to rotate. This fluid is then drained and returned to the pump that pressurized it. Hydraulic pumps work in a similar way, except they use a shaft with vanes to push fluid out under pressure.
Calculating hydraulic motor sizes - Physics Forums
Oct 18, 2011 · The above calculation would be for the motor that is moving the log forward. There would actually be several hydraulic motors and cylinders as follows MOtors; 1.) To move log forward 2.) To run chainsaw 3.) To run a conveyor to remove wood once split Cylinders 1.) To split the wood 2.) Arm to hold the wood while being split 3.)
Two Pumps on one system flow question - Physics Forums
Dec 7, 2016 · I have a hydraulic system that uses two pumps. Each pump is capable of producing 22.5 gpm. With out taking into account the different valves, restrictors, and pipe sizing, my question is, does my gpm double to 45 gpm or stay at 22.5? the pumps are not in line with each other, just provide fluid flow and pressure to the same system.
Hydraulic gear pump ports and line sizing - Physics Forums
Nov 14, 2015 · The two main types of ports used in hydraulic gear pumps are inlet ports and outlet ports. The inlet ports bring in hydraulic fluid from the reservoir into the pump, while the outlet ports carry the pressurized fluid out of the pump to the rest of the hydraulic system. How do I determine the size of the ports for my hydraulic gear pump?
Understanding Variable Pitch Fans: Get Help Here - Physics Forums
Sep 15, 2006 · In summary, variable pitch blade systems for fans/turbines involve the use of a hydraulic piston to push and pull the rotor, which is connected to lever arms that rotate the blades in an outer hub assembly. This changes the pitch of …
2 Symbols 2.1 Hydraulic actuation Balancing orifice can be fitted A B X T P 2.2 Electro-hydraulic actuation A B T X P 3 Technical data 3.1 Hydraulicy Size 08 Size 16 characteristics Inlet flow Q max 1) l/min 100 200 Nominal flow rate 2) l/min 25, 50, 75, 100 120, 160, 200 Operating pressure pmax bar 420 Pilot pressure p pmin.-- p pmax. bar 10 to 30
Calculating Motor Capacitor Size: What Equation Should I Use?
Aug 19, 2011 · I don't know if it's start/run/compensate capacitor.Both the motors run, but not as fast as before. My guess is that the capacitors had an expiry date as they have the year on them.. We changed the capacitor several times before, and the last time about 2 years ago. Replacing the capacitor run the motor fast again but not as fast as before.