MT704B2-91A1-001 Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The Kollmorgen MT704B2-91A1-001 is part of the MTC Servo Motors series and features a back EMF of 69.8 V/krpm with a maximum speed of 3000 RPM. This servo motor provides a continuous stall torque of 31.9 Nm and a peak stall torque of 90.4 Nm, operating at a line voltage of 230 Vrms L/L. It has an IP65 enclosure rating and a 174 mm square flange size, with a 35 mm shaft diameter.
Internal Product Review
The MT704B2-91A1-001 is a Kollmorgen MTC servo motor with an IP65 enclosure rating and Sincos encoder feedback. Continuous stall torque of 31.9 Nm and peak stall torque of 90.4 Nm give the motor excellent low-speed strength for demanding motion axes. A 512 PPR feedback resolution supports precise position control, a key advantage for accurate industrial servo applications.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The MT704B2-91A1-001 is a brushless servo motor manufactured by Kollmorgen for the MTC Servo Motors series. It is engineered for fixed-frame installation on automation axes that require repeatable torque delivery and accurate electronic commutation. The winding is designed for a 230 Vrms line-to-line supply. A SinCos encoder with a resolution of 512 pulses per revolution provides incremental and absolute position data to the drive, supporting precise velocity and position control. This feedback arrangement allows the controller to monitor rotor movement and adjust the commanded current during rapid changes in speed or load.
During continuous operation, the motor produces 31.9 Nm of torque while drawing a steady phase current of 29.9 Arms. The back electromotive force is 69.8 V/krpm, indicating how the generated voltage increases with rotational speed. A line resistance of 0.170 Ω contributes to copper losses and must be considered when evaluating drive capacity and heat generation. The housing has an IP65 rating, protecting the interior against dust ingress and low-pressure water jets on the factory floor. Mechanical power is transmitted through a shaft with a diameter of 35 mm and a 10 mm square key. This keyed interface provides positive engagement with compatible couplings, pulleys, and gearboxes under sustained torque loads.
For short overloads, the motor can reach a peak torque of 90.4 Nm with a corresponding surge current of 104 Arms, providing additional acceleration or disturbance rejection for limited periods. Maximum rotational speed is limited to 3000 rpm, and the encoder maintains accurate commutation throughout the operating range. The mounting flange measures 174 mm square, providing a broad support surface that helps minimize deflection under heavy belt or pinion loads. The motor has an overall length of 369 mm, which accommodates the magnetic stack and internal feedback components. Its fixed mounting arrangement supports rigid alignment when connected to a gearbox or other driven mechanism.
