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R911281188 (MHD115C-058-PG0-BN)

MHD Synchronous Motors

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The Bosch Rexroth synchronous servo motor, MPN R911281188 (MHD115C-058-PG0-BN), features a liquid-cooled, closed housing design, making it suitable for challenging industrial environments. It incorporates a digital servo feedback system with an integrated absolute encoder supporting position detection over more than 4096 revolutions. This model, with a size code of 115, a motor length C, and a flange size of 192 mm, delivers a continuous torque at standstill of 70.0 Nm and is rated for a power output of 7.7 kW. The rotor has a moment of inertia of 138 x 10⁻⁴ kg·m² and a peak current of 371 A. The plain shaft, equipped with a shaft seal, supports high radial loads, and the power connection is oriented to side B using an output connector. Operating optimally between -20°C and 80°C, the motor’s torque constant is 0.95 Nm/A and voltage constant is 86.4 V/1000min⁻¹ at 20°C. The shaft's protective drive sleeve should remain in place during storage.

Technical Specifications

Design
Completely closed

Rated Performance
7.7kW with surface cooling

Encoder Feature
Data memory for quick and simple startup

Attachment Method
Flange design as per DIN 42948 specifications

Size Code
115

Load Carrying Conditions
Shock decoupled or with shock absorbers

Commutation
Electronic

Transport and Storage Temperature
-20°C to 80°C

Moment of Inertia
138 x 10-4

Peak Current Rating
371A

Cabling Mechanism
Easy

Torque to Inertia Mass Ratio
Favorable

Performance Quality
High dynamics and high performance

Bearing Design
Designed for high radial loads

Torque Constant
0.95Nm/A

Voltage Constant
86.4V/1000min-1 at 20°C

Protection for Drive Shaft
Plastic protective sleeve.

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1620 Old Apex Road
Cary, NC 27513, USA

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Indramat USA
1620 Old Apex Road
Cary, NC 27513
USA

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Toll Free: 1-888-551-3082
International: 1-919-443-0207

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