Product Description:

The MST530L-0007-FT-N0CN-D303 is a direct-drive torque motor produced by Bosch Rexroth Indramat within the MST Synchronous Torque Motors series. Designed for high-precision rotary positioning of large loads, it supplies controlled low-speed, high-torque motion without mechanical gear reduction. In industrial automation, this configuration minimizes backlash, simplifies mechanics, and permits smooth interpolation on indexing tables, printing cylinders, or extruders where exact angular placement at crawl speeds is critical.

Continuous operating values describe the motor’s baseline performance. At a rated speed of 70 rpm, it can deliver a steady output of 46.2 kW, generated from a phase current of 133 A. That electrical input is converted into a shaft output of 6300 Nm of rated torque, and each ampere contributes approximately 47.40 Nm/A according to its torque constant at 20 °C. Heat produced under these conditions is extracted through water circulating in a 520 mm cooling jacket that surrounds the stator. The housing has an IP00 protection code, so integration inside an enclosed machine frame is required. Power reaches the windings through an axial cable on the larger-diameter side, and the supply conductors must be at least 2 × 25 mm² to keep resistive losses within design limits.

Transient demands are managed by higher reserve values. When motion starts from rest, the motor provides 7200 Nm of standstill torque, and drive algorithms can call on a peak capacity of 13800 Nm while drawing up to 308 A. These margins absorb load shocks before thermal limits are reached, aided by thermal encapsulation of the windings that spreads heat toward the coolant. The laminated stack and cooling sleeve expand the outer geometry to a diameter of 565 mm, which must be considered in frame design and installation layout.