Description

Product Overview

The Rexroth MKD071B-061-KG1-KN is a permanent-magnet synchronous servo motor from the Bosch Rexroth Indramat MKD series. It is designed for closed-loop industrial motion applications requiring controlled speed, torque, and positioning. The motor uses resolver feedback with integrated absolute-position detection and features a plain shaft with a shaft sealing ring. Bosch Rexroth’s type-code documentation identifies the KG1-KN configuration as a multiturn resolver motor with a smooth shaft, holding brake, terminal-box connection, and standard housing.

The motor provides 8.0 Nm continuous standstill torque under the specified natural-cooling condition and can reach a maximum torque of 32 Nm. A 5 Nm holding brake is also specified for this configuration. These characteristics make it suitable for machine tools, robotics, packaging machinery, printing equipment, and other industrial positioning systems.

Technical Specifications — MKD071B-061-KG1-KN

Published technical data show different rated-speed and torque values depending on the specified cooling and motor operating condition. The 8.0 Nm standstill rating corresponds to natural cooling, while surface cooling can increase the continuous standstill rating to 12.0 Nm.

Rexroth MKD071B-061-KG1-KN

Key Features and Benefits — MKD071B-061-KG1-KN

• Permanent-magnet synchronous motor construction
• Resolver feedback with absolute position capability
• Multiturn position detection exceeding 4,096 revolutions
• Plain shaft with sealing ring
• Integrated holding brake
• 115 mm flange mounting
• IP65 protection
• Terminal-box electrical connection
• Suitable for high-precision closed-loop motion systems

The feedback configuration is particularly important when replacing an installed motor. A visually similar MKD motor with a different resolver or shaft configuration may not be electrically or mechanically interchangeable.

Rexroth MKD071B-061-KG1-KN

Related Models

Rexroth MKD071B-061-KG0-KN: Similar MKD071 motor configuration without the integrated holding brake.

Rexroth MKD071B-061-GP0-KN: A related MKD071 synchronous servo motor with a different feedback and shaft configuration.

Rexroth MKD090B-047-KG1-KN: A larger MKD-series servo motor using a comparable KG1 configuration with holding brake and terminal-box connection.

Rexroth MKD041B-144-KG1-KN: A smaller MKD-series synchronous servo motor intended for applications requiring a lower motor size.

Installation and Maintenance — MKD071B-061-KG1-KN

Before installation, verify the motor type code, drive compatibility, flange dimensions, shaft arrangement, brake voltage, and feedback interface. Confirm that the connected Rexroth drive is configured for the correct motor data.

Inspect the shaft seal, flange, terminal box, brake wiring, and feedback connections for damage. After installation, perform the manufacturer’s prescribed motor identification and commissioning procedure. Check rotation direction, encoder feedback, brake release, homing, and positioning accuracy before returning the machine to production.

Personally, I would verify the motor feedback configuration first. Resolver incompatibility can prevent successful commissioning even when the mechanical mounting and power connections appear correct.

Product Warranty — MKD071B-061-KG1-KN

Warranty coverage depends on the supplier, equipment condition, and purchase agreement. For new, surplus, or refurbished units, confirm the exact type code, serial number, encoder condition, brake operation, insulation condition, and functional-test results before purchase.

The Rexroth MKD071B-061-KG1-KN should be specified by its complete type code because the feedback, shaft, brake, and connection configuration directly affect replacement compatibility.