Product Description:

The MKD090B-085-KP0-BN is a servo motor manufactured by Bosch Rexroth Indramat for the MKD Synchronous Motors series. It functions as an electromechanical actuator that delivers closed-loop rotational motion to automated machinery, allowing precise speed and position control in production lines and assembly systems. Used with a compatible drive, it converts commanded current into controlled shaft movement for repeatable axis operation in positioning and synchronized motion tasks.

The motor seats against a machined pilot with a centering diameter of 110 mm, which helps minimize axial runout when it is bolted to gearboxes or machine frames. Power and feedback conductors exit on Side B and terminate on an output connector, a layout that helps keep cables clear of the driven shaft in right-hand installations while allowing a direct connection at the housing. Under continuous stall conditions, the electromagnetic package sustains 12.0 Nm of torque, providing steady holding force for indexing duties without overheating. Rotor position is monitored by resolver feedback inside the housing, which supplies analog sine-cosine signals to the drive for sinusoidal current control and smooth low-speed operation.

A square flange of 140 mm matches common mounting patterns, so the motor can fit standard machine interfaces without redrilling plates. The motor is built without a holding brake, so any stationary load must be secured by external mechanics or by drive torque when power is removed. Its integrated electronics support absolute (>4096 revs) position detection, which removes the need for a homing cycle after startup. Mechanical power is delivered through a shaft with keyway, allowing rigid coupling to pulleys or couplings, and a shaft seal helps block lubricant ingress from connected gear reducers. Size code 090 and length code B give the motor its active stack height, which affects inertia and heat dissipation during controller and gear-ratio selection.