TMP070 TMP089 Pump TMM070 TMM089 Motor TMG51.2 TMG61.2 TMG71.2 Sauer Transit Mixer Gearbox.
The hydrostatic transmission developed by Danfoss for transit mixers, comprising the axial piston variable displacement pump TMP and the axial piston fixed displacement motor TMM, is based on more than 30 years' experience in the world wide use of pumps/motors in transit mixers.
The demonstrable reliability of the rotational group was decisive in continuing to use these in the new and innovative drive concept.
In the TMP and TMM the connection sizes (fixing flange/shaft) from series 20 were adopted. The TMP shaft is designed at the factory with the usual DIN connection flange 100 mm as standard. The requirements of the market with regard to reducing the overall volume, weight and noise, and also the electrical pump displacement control - in connection with the introduction of trucks with EURO 2 (3) diesel engines - have been taken into account accordingly.
Details regarding the choice of hydraulic fluid:
The correct choice of hydraulic fluid requires knowledge of the operating temperature in relation to the ambient temperature: in a closed circuit the circuit temperature. The hydraulic fluid should be chosen so that the operating viscosity in the operating temperature range is within the optimum range - the shaded area of the selection diagram. We recommended that the higher viscosity class be selected in each case. Example: At an ambient temperature of X °C an operating temperature of 58 °C is set. In the optimum operating viscosity range (shaded area) this corresponds to the viscosity classes VG45 or VG65; to be selected: VG65. Please note: The case drain temperature, which is affected by pressure and speed, is always higher than the circuit temperature. At no point in the system may the temperature be higher than 115 °C. If the above conditions cannot be maintained due to extreme operating parameters, please consult us.
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