Product Description:

The MST530G-0010-FH-N0KR-M260 is a frameless stator supplied by Bosch Rexroth Indramat within the MST Synchronous Torque Motors series. As a high-pole, low-speed torque motor stator, it delivers direct-drive rotation for indexing tables, extruders, or rotary axes that need high torque at minimal speed, integrating directly into the machine housing to eliminate gearboxes.

At its continuous operating point the stator delivers 44.00 kW of mechanical power while spinning at 100 1/min. This output is sustained with a rated phase current of 116.8 A drawn through an RLK1300 terminal box that accepts two 25 mm² power conductors. During acceleration or transient load peaks the winding tolerates up to 350.0 A, a margin that protects motion sequences from stalling. With a torque constant of 32.70 Nm/A, every ampere supplied yields proportional torque, simplifying current-controlled drive setups. The liquid-cooled housing surrounds an aluminum cooling jacket that transfers heat directly to the coolant circuit, keeping copper temperature centered around the 20 °C reference at which the 2.700 V/1000 rpm voltage constant is specified.

A right-side, smaller-diameter cable outlet helps route motor leads away from rotating elements, and the 204.0 kg stator mass supplies thermal inertia for intermittent cycles. Magnetic saliency is provided by 35 pole pairs, enabling high torque at the low synchronous speed chosen for tables or drums. Stable operation depends on a coolant flow of 16.5 l/min through the jacket; insufficient flow will raise the windings beyond design limits. Dynamic response is influenced by the stator’s 4.3 mH inductance, while copper losses are governed by its 0.33 Ω resistance at 20 °C. Together these parameters guide drive controller tuning and determine permissible duty cycles without additional derating.