MHD115A-058-NP1-AA Bosch Rexroth Indramat
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MPN: R911293692
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The Bosch Rexroth Indramat MHD115A-058-NP1-AA is a servo motor from the MHD Synchronous Motors series. It features a continuous torque at standstill of 32 Nm, a keyed shaft design, and IP65 degree of protection. The motor includes a holding brake with a torque of 70 Nm and uses digital servo feedback for position detection.
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Product Description:
The MHD115A-058-NP1-AA is a servo motor produced by Bosch Rexroth Indramat within the MHD Synchronous Motors series. Designed as a torque source for numerically controlled machinery, it interfaces with drive controllers to position loads precisely and repeatably in automated production lines. Its electromagnetic design allows rapid acceleration while maintaining consistent speed control, so it suits multi-axis gantries, transfer systems, and machining centers. This configuration is intended for machine axes that need accurate motion without adding separate external feedback hardware.
At standstill, the motor supplies a continuous torque of 32.0 Nm, enabling stable holding force under closed-loop control. The enclosure carries an IP65 rating, so dust ingress and water jets do not affect operation. Position information is generated by integrated digital servo feedback (HSF) using an optical measurement method with relative position detection. Mounting follows an IEC pattern with a square flange measuring 192 mm, and the keyed output shaft includes a seal to help prevent lubricant escape. Heat is removed by natural convection, the stator uses winding code 058, and electrical power enters through a connector on side A. Continuous operation is permitted over an ambient range of 0 to 40 °C, and installation is permitted up to 1000 m above mean sea level. The motor uses size 115 with length A for its frame dimensions.
An integral holding brake applies 70.0 Nm of static torque to secure the load whenever power is removed. The feedback system and drive electronics support a positioning tolerance of ± 0.5 angular minutes, which helps with high-accuracy contouring and repeatable stopping. Heat resilience is supported by Class F insulation, allowing the windings to tolerate elevated internal temperatures. Mechanical alignment during installation is aided by a centering diameter of 180 mm, which locates the motor accurately on matching machine faces. When the machine is idle, the motor can be stored between -20 and 80 °C without damage to internal components. This arrangement supports precise axis control in equipment that must stop securely and restart with minimal position error.
Frequently Asked Questions about MHD115A-058-NP1-AA:
Q: What is the continuous torque at standstill for the MHD115A-058-NP1-AA motor?
A: This motor provides a continuous torque of 32.0 Nm at standstill, allowing for stable and consistent operation during loads.
Q: Does the MHD115A-058-NP1-AA come equipped with a holding brake?
A: A holding brake is included with this model, offering 70.0 Nm of holding brake torque for secure load retention when not powered.
Q: What encoder type and measurement method are used in the MHD115A-058-NP1-AA motor?
A: This motor uses a digital servo feedback (HSF) encoder with optical measurement for position detection.
Q: What level of environmental protection does the MHD115A-058-NP1-AA offer?
A: The degree of protection rating for this model is IP65, providing resistance against dust and water ingress.
Q: What type of shaft and shaft sealing does the MHD115A-058-NP1-AA motor have?
A: The shaft on this motor features a keyed design and is equipped with a shaft seal for enhanced reliability.
