Product Description:

The ADF134B-B05TA0-BS16-A2N2 spindle motor is produced by Bosch Rexroth Indramat within the ADF Main Spindle Motors series. As a main spindle unit, it converts electrical power into rotational motion for machine tools and other precision equipment where constant speed and stable torque are required. Integration of this motor into numerically controlled systems supports automated material removal, drilling, and milling operations by supplying controlled mechanical energy directly to the spindle shaft. This operating role suits production equipment that depends on repeatable spindle behavior as cutting conditions and load levels change throughout a cycle.

Mechanical accuracy is supported by a balance grade of S DIN ISO 2373, and the rotor rides on a standard bearing set to help minimize radial runout under load. Position and velocity data are reported through digital servo feedback, allowing the drive controller to apply closed-loop correction, while the electrically actuated clamping holding brake delivers a peak restraint of 100 Nm when power is removed. The motor uses winding code BS and carries length designation B with frame size 134, which corresponds to the slot geometry, copper fill, and thermal mass used for the required duty cycle. This combination helps the spindle maintain stable rotation during acceleration, steady cutting, and controlled deceleration.

The stator housing is prepared for flange mounting, and the liquid circuit connects on the front face through an axial connection with a 1/4" thread so coolant can be routed without altering the machine footprint. Power conductors enter from Side A through a top-located connector plug, which simplifies cable routing and helps keep chip flow clear of the junction. Because the motor uses liquid-cooled asynchronous motor technology, heat is removed directly at the stator iron, so an external fan is not required. The drive end uses a plain shaft, no shaft seal ring is installed, and the opposite end has no second shaft extension. This layout reduces external sealing points and keeps the machine interface compact around the spindle assembly.