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R911287531 (1MR310B-A112)

1MB High-Speed Asynchronous Motors

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The R911287531 (1MR310B-A112) is a 1MR rotor designed for integration with Bosch Rexroth 1MB frameless kit spindle motors, specifically for C-axis, processing, and threading tasks. This rotor is compatible with 1MS stators of types 6B, 6D, and 6E and supports a current range of 58 to 75 A. It delivers a rated torque of 260 Nm and operates within a speed range of 1760 to 4000 rpm, providing output power from 12 to 27 kW depending on the paired stator. The rotor is suitable for stators with an internal diameter of 112 mm, features a step interference fit design, uses class-F insulation, and is intended for ambient temperatures between 0 and +40°C. Professional installation and handling are required.

Technical Specifications

Product Type
1MR Rotors, Brake Resistors, Drive Controllers

Installation
Mounted in 1MS stator

Rated Torque
260 Nm

Operating Current
58 – 75 A

Available Stator Types
6B, 6D, 6E

Operating Speed
1760 – 4000 rpm

Rated Power
12 – 27 kW

Motor Inside Diameter
112 mm

Design
Step Interference Fit

Operating Temperature
0 to +40 degree Celsius

Insulation
Class-F

Usage
Direct drive in spindle motors

Product Reliability
Robust and Reliable

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1620 Old Apex Road
Cary, NC 27513, USA

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

Fax: 1-919-867-6204

[email protected]

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Indramat USA 1 Year Warranty

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We offer a repair service for the 1MR310B-A112.

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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.