MKD025B-144-GG1-UN Bosch Rexroth Indramat
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MPN: R911291851
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The Bosch Rexroth Indramat MKD025B-144-GG1-UN is a servo motor from the MKD Synchronous Motors series with a flange size of 54 mm and a centering diameter of 40 mm. It features resolver feedback for position detection, a plain shaft with a shaft seal, and power and encoder connectors that are turnable within a range of 270°. This model provides 0.9 Nm continuous torque at standstill and is equipped with a holding brake that offers 1 Nm of holding torque.
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Product Description:
The MKD025B-144-GG1-UN is a compact servo motor produced by Bosch Rexroth Indramat within the MKD Synchronous Motors series. In automated machinery, it converts commanded drive current into precise rotary motion for indexing tables, small actuators, and similar loads that require coordinated positioning. Its compact format makes it suitable for installations where available mounting space is limited and responsive motion is required. The motor is intended for closed-loop operation with a compatible drive, allowing the axis to maintain controlled speed and position during short, repetitive moves.
This model delivers a continuous standstill torque of 0.9 Nm, allowing stable holding force without overheating during prolonged dwell times. Installation is based on a 54 mm square flange whose pilot has a centering diameter of 40 mm, providing accurate alignment with gearboxes or frames. The rear power and encoder connectors can be swiveled because the connection orientation is turnable within a range of 270°, which simplifies cable routing in tight panels. Resolver-based feedback is supplied through Resolver feedback (RSF), giving analog sine-cosine signals for drive-side commutation and speed control. A normally closed holding brake is factory installed, and its static capacity is 1 Nm, so the shaft remains locked when supply power is removed. Power conductors and sensing lines exit on dedicated power and encoder connectors, which helps limit electrical interference between high-current and low-level signals.
The motor has frame length B, an overall frame size of 025, and a winding set labeled 144, which corresponds to the electrical characteristics used with the matching drive family. Position detection is relative rather than absolute, so homing must be completed after each power cycle before normal positioning begins. The output shaft is a Plain shaft, facilitating direct coupling with clamping hubs, and it includes a shaft seal that helps block lubricant migration into the stator cavity. This arrangement is well suited to light servo axes that need accurate start-stop motion in a compact installation.
Frequently Asked Questions about MKD025B-144-GG1-UN:
Q: What type of feedback does the MKD025B-144-GG1-UN servo motor use for position detection?
A: The MKD025B-144-GG1-UN features resolver feedback (RSF) for position detection.
Q: Does the MKD025B-144-GG1-UN servo motor include a holding brake and what is its torque?
A: This motor is equipped with a holding brake that provides 1 Nm of holding torque.
Q: What is the shaft design of the MKD025B-144-GG1-UN servo motor?
A: The shaft design for this model is a plain shaft with a shaft seal.
Q: What is the connection direction adjustment range for the MKD025B-144-GG1-UN?
A: The connection direction can be turned within a range of 270°, allowing flexible cable alignment.
Q: What continuous torque at standstill does the MKD025B-144-GG1-UN offer?
A: The MKD025B-144-GG1-UN provides a continuous torque of 0.9 Nm at standstill.
