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1MR310F-A112/S022

1MB High-Speed Asynchronous Motors

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1MR310F-A112/S022 from Bosch Rexroth Indramat is a high-performance spindle motor in the 1MB High-Speed Asynchronous Motors series. It delivers 30 kW of continuous power at a nominal 380 V and 47 A, optimized for demanding industrial automation. The unit’s robust construction weighs 145 kg yet maintains a compact 400 mm total length for versatile mounting. An integrated incremental encoder ensures precision feedback under dynamic loads.



The motor features liquid-cooled thermal management for consistent operation up to its 200 Hz electrical frequency and a max mechanical speed of 8000 RPM. Housed in a IP54 enclosure, it affords dust and splash protection in harsh environments. Its flange mounted design and axial runout after installation ≤ 0.04 mm support high-accuracy alignment. A rotational inertia of 0.723 kg·m² and a winding resistance of 0.363 ohm (20 °C) balance rapid acceleration with torque stability across the speed range.



Engineered for integration into turning, milling, and grinding spindles, the 1MR310F-A112/S022 seamlessly couples to CNC drives via its precise bore tolerances and incremental encoder feedback. Its liquid-cooling circuit reduces thermal drift, enhancing reliability in continuous-duty cycles. Combined with Bosch Rexroth Indramat control systems, this spindle motor delivers exceptional rigidity, dynamic response, and uptime for critical manufacturing applications. Please respond in JSON format.

Technical Specifications

Axial Runout After Installation
≤ 0.04 mm

Cooling Method
Liquid-cooled

Encoder Type
Incremental

Frequency
200 Hz

Max Mechanical Speed
8000 RPM

Mounting Type
Flange mounted

Protection Class
IP54

Rated Current
47 A

Rated Power
30 kW

Rated Voltage
380 V

Rotational Inertia
0.723 kg·m²

Total Length
400 mm

Type
Spindle Motor

Weight
145 kg

Winding Resistance (20°C)
0.363 ohm

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Warranty
1-year-warranty
Indramat USA 1 Year Warranty
Repair
product repair We offer a repair service for the 1MR310F-A112/S022.
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