Product Description:

The MDD090B-N-020-N2L-130GB0 belongs to the MDD Synchronous Motors series from Bosch Rexroth Indramat. It is a motor for digital drive controllers that supplies rotational power while allowing the controller to monitor position and velocity in real time. With a size-090 frame and B length code, the unit fits mid-range machine envelopes where moderate torque and stable speed control are needed in automated handling and machining cells. It is well suited for axes that alternate between low-speed positioning and faster travel during normal machine operation.

The rotor can supply a continuous standstill torque of 7.2 Nm. This supports steady holding force and controlled low-speed motion when forced ventilation is not used. Rated operation is at 2000 rpm, so the drive must supply the matching electrical frequency under load. A centering diameter of 130 mm helps align the motor accurately on its machine flange, which supports precise mechanical fit. Power and feedback cables exit on side B, and a compact plug-in connector terminates those conductors for direct wiring. This cable direction can be useful where space is limited near the driven face. Standard dynamic balancing helps reduce vibration during rotation, and the housing uses the standard version for this frame size.

An integrated digital servo feedback transducer provides high-resolution signals for closed-loop commutation and position control. The motor is supplied without a blocking brake, so any vertical or suspended load must be held by external means when power is removed. A plain shaft is used for coupling, and it is fitted with a shaft seal to help retain lubricant and limit contaminant entry. This shaft arrangement is suitable for friction-based coupling elements rather than keyed drive components. The non-drive end has no additional shaft extension, which keeps the rear of the motor compact for enclosed machine layouts.