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R911290881 (MHD115B-024-PP1-RA)

MHD Synchronous Motors

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The Bosch Rexroth servo motor, MPN R911290881 (MHD115B-024-PP1-RA), is designed for integration with drive controllers and automation systems, offering digital servo feedback with an integrated absolute multiturn encoder for precise position detection (>4096 revolutions). It delivers a rated torque of 53.1 Nm at 32.5 A and uses a keyed shaft with a sealing ring for secure power transmission, supported by a 154 V/1000 min-1 voltage constant and a 1.7 Nm/A torque constant at 20°C. The unit features natural convection housing cooling, Class F insulation, IP65 protection, a 40-minute thermal time constant (surface cooling), and a 70 Nm holding brake operating at 1.29 A and 24 V. The motor measures a motor length B, a centering diameter of 180 mm, flange size of 192 mm, and weighs 40 kg.

Technical Specifications

Cooling
Surface cooling

Thermal time constant
40 minutes

Rated Torque
53.1 Nm

Current Consumption
32.5 A

Motor Feedback
Multiturn Encoder

Power Connection
Housing right side

Shaft Design
Shaft with Keyways

Voltage Constant
154 V/1000min-1

Torque Constant
1.7 Nm/A at 20 degrees Celsius

Protection Class
IP65

Insulation Class
F

Weight
40 Kg

Holding Brake Torque
70 Nm

Holding Brake Current
1.29 A

Holding Brake Voltage
24 volts

Rated Current
8.2 A

Rated Frequency
133 Hz

Winding Inductance
5.3 mH

Resistivity
0.36 ohms

Thermal Time Constant (Natural Cooling)
100 minutes

Fault and Malfunction Replacement
Yes

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1620 Old Apex Road
Cary, NC 27513, USA

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[email protected]

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Indramat USA 1 Year Warranty

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North Carolina Office

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

Indramat USA sells factory new and pre-owned surplus products and maintains channels to procure supply. Indramat USA is not affiliated with nor an authorized distributor or representative of any manufacturers, brands or products listed. Designated trademarks, brand names, and brands appearing herein are the property of their respective owners.