Product Description:

The MDD025B-N-100-N2K-040GA1 is a synchronous motor developed by Bosch Rexroth Indramat for the MDD Synchronous Motors series and is intended for digital drive controllers in compact automation systems. Its 025 frame size and B length code give it a narrow body that fits tight machine layouts without taking much radial space. The housing uses a standard format for straightforward mounting, and standard dynamic balancing helps reduce vibration transfer to nearby components. A molded connector also keeps the electrical connection compact at the motor end. This arrangement suits small motion axes where available installation space is limited.

During operation, the motor delivers a continuous stall torque of 0.60 Nm, which suits light positioning axes that need stable holding force at low speed. Its nominal mechanical speed reaches 10,000 rpm, allowing direct coupling to high-speed spindles where a gearbox is not desired. A built-in blocking brake provides up to 1.0 Nm of holding torque so the axis can remain stationary after power is removed. Power is transmitted through a plain shaft, which works well with common clamping couplings and avoids the stress concentration associated with a keyway. The combination of high rated speed and modest continuous torque fits duties that favor quick response over heavy load capacity.

Mechanical alignment is set by a centering pilot of 40 mm on the front face, and all power and feedback leads exit on Side A so cabling stays on one side of the machine. The motor uses an integrated absolute encoder, allowing the drive to read rotor position immediately after startup without a homing move. A sealing ring at the shaft front means the unit is supplied with a shaft seal, and the shaft end is machined only on the drive side with no extension on side B. Single-sided cable routing can simplify hose-pack organization in compact assemblies and reduce interference with nearby moving parts.