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R911278225 (MHD090B-058-NP0-UN)

MHD Synchronous Motors

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The Bosch Rexroth R911278225 (MHD090B-058-NP0-UN) is a synchronous servo motor from the MHD series, featuring a brushless design with a permanent magnet rotor and medium torque output. It operates at a standard speed of 4,000 RPM with a rated frequency of 267 Hz and incorporates four electrical poles. The motor integrates a digital servo feedback encoder for position detection and a keyed shaft with a DIN 6885-1 keyway. It supports liquid cooling, has a continuous stall torque of 12.0 Nm, a centering diameter of 110 mm, and a flange size of 140 mm. The motor presents a shaft seal and offers a rotatable power connection within a 270° range.

Technical Specifications

Industry Use
Motion Control

Design
Brushless

Rated Torque (Naturally Cooled 60K)
4.2Nm

Rated Torque (Naturally Cooled 100K)
8.9Nm

Rated Torque (Surface Cooled)
13.4Nm

Rated Performance (Naturally Cooled 60K)
2.1kW

Rated Performance (Naturally Cooled 100K)
4.9kW

Rated Performance (Surface Cooled)
7.0kW

Nominal Operating Speed
4000 RPM

Rated Frequency
267 Hz

Poles in Electric Design
4

Feedback Encoder Type
Digital Servo Feedback

Drive-shaft Keyway design
DIN 6885-1 Keyway.

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Cary, NC 27513, USA

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1620 Old Apex Road
Cary, NC 27513
USA

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