Product Description

The main spindle MAD160B-0150-SA-S2-EP1-05-N1 motor is designed and developed by the Indramat Rexroth Bosch group. The simplicity, rigidity, and durability of asynchronous motors are well known. There is a lower risk of failure in these motors because they don't need a commutator or brushes. The motor is called asynchronous because of the lack of synchronization between the speed of the rotating magnetic field and the rotor. An asynchronous motor's speed is determined by its slip, resistance of the rotor circuit, and mechanical load.

With its 160 B (size & length) and 0150 winding, the MAD160B-0150-SA-S2-EP1-05-N1 is capable of achieving a maximum speed of 440 Nm and a rated speed of 1500 rpm. The speed of 2 two-pole motors is higher than 4 or 8-pole motors because with just one polarity switch, it can complete a full revolution of 360°, but a four-pole motor can only revolve 180 degrees. The 2-pole asynchronous motor at 20 °C temperature generates 4.06 Nm/A torque. The electric holding brake installed in the motor has a 20 kg mass and responds very quickly within a few microseconds (100 ms).

When the brake is applied, the permanent magnets generate magnetic flux, that can then pull the armature that is attached to the brake housing. To release the brake, electricity is provided to the coil, creating an alternative magnetic field that terminates the magnetic flux produced by the permanent magnets. The motor is equipped with a direct blower unit (axial fan) and a single-turn encoder. The single-turn (STG) encoder repeats the output for every single turn of the shaft, monitoring only displacement throughout the revolution by comparing it with a predetermined starting position.