MHD112A-058-NG1-BN Bosch Rexroth Indramat
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MPN: R911294234
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The Bosch Rexroth Indramat MHD112A-058-NG1-BN is a servo motor from the MHD Synchronous Motors series. It features a continuous standstill torque of 15.0 Nm, an IP65 protection rating, and liquid cooling. This motor has a plain shaft with a shaft seal and includes a holding brake with 22.0 Nm torque, using digital servo feedback for position detection.
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Product Description:
The MHD112A-058-NG1-BN is a servo motor manufactured by Bosch Rexroth Indramat as part of the MHD Synchronous Motors series. Intended for industrial automation, it converts drive commands into controlled shaft rotation for positioning, feeding, or spindle functions on machine tools and handling equipment. Integrated digital feedback ensures the controller receives precise rotor position data during every control cycle. This supports accurate motion on axes that must start, stop, and change speed without losing position consistency.
Output capability begins with a continuous standstill torque of 15.0 Nm, allowing the axis to support static mechanical loads without overheating. Thermal energy is extracted through liquid cooling passages in the stator housing, so rated torque can be delivered through long duty cycles. The enclosure carries a protection rating of IP65, shielding internal components from dust and low-pressure water jets. Mechanical attachment is handled by a 192 mm square flange and a 130 mm centering pilot that align the motor precisely to the machine frame. Rotor position information is generated by digital servo feedback (HSF), enabling high-speed closed-loop control with minimal interpolation error. This mounting and feedback arrangement helps the motor fit tightly aligned drive trains such as ball screws, belt axes, and direct machine couplings.
An electromechanical brake supplies 22.0 Nm of holding torque, securing vertical or suspended axes whenever power is removed. The motor operates reliably within an ambient range of 0 to 40 °C, while storage or transport conditions may extend from -20 to +80 °C. Across this temperature window, the optical measurement system maintains a system accuracy of ± 0.5 angular minutes, supporting precise contouring and repeatable indexing. Class F insulation, liquid-cooled construction, and a maximum installation altitude of 1000 m above mean sea level help maintain electrical and thermal stability during prolonged duty. The brake and feedback system also support applications that must hold position at rest and return to commanded motion with stable control response.
