New Hydrostatic Pump Series Offers Better Efficiency for Sewer Cleaning Machines.
“The hydrostatic drive delivers smooth, infinitely variable power,” said Tom. “The
pumps and motors are connected in a closed loop, and we inject cooling oil with an auxiliary charge pump on the low-pressure side to control system temperature.
The Series 760 features a new design concept for Eaton hydrostatic pumps called the integrated valve system (IVS) that combines a high-pressure relief valve, a pressure override control, system check valves, and a bypass valve in one cartridge. By combining these functions in a single cartridge, the IVS reduces pump size and weight while simplifying diagnostics, troubleshooting, and service for the customer.
The direct-acting, high-pressure relief valve actuates whenever system pressure
equals the relief valve setting to protect system components from
pressure spikes. The pressure override control (POR) works in combination
with the high-pressure relief valve to protect the transmission when it is operated for extended periods at overload pressures. If the system pressure reaches a preset limit, the pump destrokes and adjusts its displacement to the load.