Seal-less design ensures efficiency
03 December 2018
Hydra-Cell High Pressure Coolant Pumps from Wanner are claimed to be the most energy efficient, machine tool coolant pumps available, measured at upwards of 80%, pump shaft to hydraulic power.
Being true positive displacement pumps, they maintain this efficiency virtually irrespective of coolant viscosity and system pressure whereas Wanner says screw and gear pumps, that rely on the pumped coolant for internal sealing, suffer a fall-off in efficiency as system pressure increases or fluid viscosity is reduced.
With a Hydra-Cell pump, flow rate is directly proportional to input shaft speed, enabling a variety of accurate control options to be employed.
Of benefit in metalworking is Hydra-Cell’s ability to handle fines entrained in the coolant that can cause major wear problems in pumps with dynamic seals, have bearings immersed in the pumped coolant or have close internal tolerances to maintain efficiency.