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R911311885 (MHD115A-035-NG1-BA)

MHD Synchronous Motors

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The Bosch Rexroth synchronous motor R911311885 (MHD115A-035-NG1-BA) is engineered for precision motion control applications. It operates at a rated speed of 3000 RPM and a maximum speed of 4500 RPM, with a thermal time constant of 60 minutes under natural convection. The motor integrates a digital servo feedback (HSF) system for relative position detection and is equipped with a 70 Nm holding brake; engagement times are 53 ms and 97 ms. This model, with a plain shaft and sealing, has a continuous standstill torque of 32 Nm, rated power of 12.6 kW (with surface cooling), centering diameter of 180 mm, flange size of 192 mm, and motor size 115. The unit complies with IP65 protection, uses insulation class F, weighs 30 kg excluding holding brake and blower unit, and has power connectors oriented to side B.

Technical Specifications

Product Type
Synchronous Motor

Rated Speed
3000 RPM

Thermal Time Constant
60 Minutes

Moment of Inertia
65.0 x 10-4 kgm2

Winding Inductivity
5.8 mH

Output Shaft
Plain with sealing ring

Encoder
Digital Servo Feedback

Maximum Revolutions
4500 RPM

Peak Current Consumption
121 A

Holding Brake Torque
70 Nm

Holding Brake Connection/Disconnection Times
53/97 milliseconds

Holding Brake Weight
3.8 kg

Holding Brake Rated Current
1.29 A

Degree of Protection
IP65

Insulation Class
F

Coating
Black Painted

Power Connection Location
B side of the enclosure

Weight (without holding brakes & blower unit)
30 kg

Rated Power (Surface Cooling at 100/60 K)
12.6 kW

Rated Torque (Surface Cooling at 100/60 K)
34.8 Nm

Maximum Shaft Speed
4500 RPM

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1620 Old Apex Road
Cary, NC 27513, USA

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North Carolina Office

Indramat USA
1620 Old Apex Road
Cary, NC 27513
USA

Phone

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.