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R911246971 (1MR310F-A125)

1MB High-Speed Asynchronous Motors

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1 Year Warranty Included
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3 Minutes 8 Seconds

The Bosch Rexroth MPN R911246971 (1MR310F-A125) is a frameless spindle motor engineered for applications requiring high power density and precise thermal management. This unit features a 97 kg rotor with a step interference fit, specified for integration into the stator of the main spindle. The 1MR rotor operates at a rated speed of 900 rpm, delivering 35 kW continuous output and 480 Nm rated torque in a 6A stator winding, supported by 61 A current. The stator is liquid-cooled to minimize heat buildup, aided by an aluminum cooling jacket, and is suited for ambient temperatures up to +40°C and installations up to 1000 meters elevation. Maximum permitted speed is 3600 rpm. This model uses a 6B winding configuration in a Size 310, Length F motor variant.

Technical Specifications

Weight
97 kg

Mounting
Stator in the main spindle

Rated Speed
900 rpm

Rated Power
35 kW

Cooling System
Liquid-cooled stator

Rated Current
61 A

Rated Torque
480 Nm

Optimal Operating Temperature
+40 degrees Celsius

Insulation Category
F

Maximum Speed
3600 rpm

Power Connector Minimum Cross Section Area
16 mm2

Height Usage
Less than 1000 meters above sea level

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Warranty
1-year-warranty
Indramat USA 1 Year Warranty
Repair
product repair We offer a repair service for the 1MR310F-A125.
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