Assembly Instruction
Tolerances and Hypotheses of Motor Specifications
Torque Motor
TM-Komponenten-04-0-EN-2108-MA
Page 73 of 84
8
Tolerances and Hypotheses of Motor Specifications
8.1
Tolerances
Except for the size specifications, there is tolerance of ±10 % for all specification value mentioned in the motor
specifications. The dimensions without marked tolerance are with general tolerances, except the effective depth
of the thread and the positioning pin hole. The tolerance table is shown in the approved drawing.
8.2
Hypothesis of heat transfer
The assumptions of all specifications are based on water cooling and natural air cooling. For other heat
dissipation conditions, individual test needs to be conducted for confirmation.
Hypothesis of air cooling condition: ambient temperature around stator/rotor: 20 °C;
Hypothesis of water cooling conditions:
Ambient temperature around the rotor: 20 °C
Inlet water temperature: 20 °C
Temperature difference between inlet and outlet water: 5 °C
External temperature of stator: 22,5 °C on average
The stator heat exchange characteristics are defined in accordance of the number of water cooling system
and the interface design from Table 4.1 and Table 4.4.
