Product Description:

The ADF104C-B05TC1-AS06-D2N2 is a liquid-cooled asynchronous main spindle motor produced by Bosch Rexroth Indramat within the ADF Main Spindle Motors series. Intended for automated machine-tool spindles, it transforms drive output into continuous mechanical torque while its internal coolant circuit removes process heat. This supports stable speed control during long cutting cycles in CNC machining centers and other production equipment. The motor is suited for spindle duties that require steady torque delivery and accurate response to changing load conditions.

Mechanical installation is simplified by its flange mounting, which lets the housing bolt directly to the machine column. Frame size 104 specifies the stator diameter and sets the basic torque range, while length code C denotes the third stack height available in the series and indicates continuous power capability. The power conductors land in a junction box located on the housing, providing a rigid connection point for shielded conduit. Closed-loop control is achieved through digital servo feedback, which returns high-resolution rotor position data to the drive for precise spindle speed and phase regulation during tapping, milling, or grinding operations.

Dynamic balance is held to class S DIN ISO 2373, which reduces vibration and helps protect tool life at elevated speeds. A shaft with keyway that is balanced with the full key supplies positive torque transmission to chucks or belt pulleys. The unit ships without a holding brake, so stopping torque must be supplied by the inverter or an external clamp, which is typical for continuously rotating spindles. Electrical power is routed on side A, freeing the opposite face for coolant plumbing. The motor uses standard bearings, a liquid coolant inlet that mates with standard connectors, an installed shaft seal ring to protect the front bearing from cutting fluid, and no second shaft end on side B.