Product Description:

The MST450E-0012-FT-N0CN-NNNN is a frameless torque motor manufactured by Bosch Rexroth Indramat and belongs to the MST Synchronous Torque Motors series. As a direct-drive unit, it mounts inside rotary tables, indexing heads, or heavy winding stations and supplies high stall torque without the backlash associated with gearboxes. Its role in industrial automation is to deliver smooth, low-speed rotation with precise position control while keeping mechanical assemblies compact. Because the motor is frameless, the surrounding machine structure must provide the supporting bearing system and the final mechanical enclosure. This arrangement is often used where high torque is needed directly at the load and where extra transmission components would add compliance or maintenance.

The motor delivers a continuous output of 1400 Nm, and its overload ceiling rises to 3250 Nm for short duty peaks. To sustain these torque levels, the windings may draw up to 125 A. Thermal energy is removed through water cooling, letting the stator remain within permissible insulation limits during prolonged cycles. Because the housing carries an IP00 protection code, it must be installed inside an enclosed machine frame where environmental shielding is already provided. The application also needs a suitable coolant circuit and safeguards against accidental contact with exposed active parts.

A cylindrical stator section measuring 210 mm in jacket length and 480 mm in outside diameter sets the mounting envelope for the drive module. The open laminations sit inside an open aluminum cooling jacket, which supports heat transfer from the stator to the cooling medium. To carry phase power, installation guidelines require conductors with a minimum cross-section of 10.0 mm². The standard cable diameter is 22.2 mm, which helps match the required conductor size within the connection space. Surrounding machine parts must leave enough clearance for the stator body, coolant passages, and power lead routing.