R911281909 (MKD090B-085-KP1-AN)

MKD Synchronous Motors

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The Bosch Rexroth R911281909 (MKD090B-085-KP1-AN) is a synchronous servo motor featuring a B05 flange design for installation in any orientation. Electrical connection is made via a top-mounted power connector directing supply to side A. The motor housing is finished with a black prime coat for environmental resistance, with an unpainted version available for specific applications. It includes a 24VDC holding brake providing 11 Nm holding torque, with typical clamping and release times of 13 and 30 microseconds. The unit integrates a resolver feedback system with a multi-turn absolute encoder for position detection exceeding 4096 revolutions. It is equipped with grease-lubricated bearings rated for 30,000 operating hours, a shaft with keyway and shaft seal, and offers an optional blower for surface cooling. The motor achieves a continuous stall torque of 12.0 Nm, a maximum torque of 24.0 Nm, and a rated speed of 3000 RPM. It utilizes winding code 085, has a flange size of 140 mm, centering diameter of 110 mm, and operates within insulation class F and protection class IP65. Ambient operating temperature ranges from 0°C to +40°C.