DST2 135–560 high-torque synchronous direct drive (torque) motors up to 31 600 N·m

Technical specifications

Specifications are taken from the manufacturer’s technical documentation. Updated 11/10/2026.

Description

The multi-pole design gives very high torque already at low speeds, so the motor replaces the motor-plus-gearbox pair, belt drives and hydraulic drives. The manufacturer has been making high-torque motors since 1991. The standard range is as follows. DST2-135 gives 2.7–60 kW at 175–1500 rpm and 140–580 N·m, DST2-200 gives 5.5–126 kW and 310–2030 N·m, DST2-260 gives 20–225 kW and 1130–4760 N·m. DST2-315 gives 16–285 kW at 100–600 rpm and 1200–8600 N·m, DST2-400 gives 92–530 kW at 100–300 rpm, 8800–18 600 N·m rated and up to 31 600 N·m maximum torque. The largest, DST2-560KO54W-010-5, develops 153 kW and 14 600 N·m at 100 rpm, the BO54W version gives 305 kW and 29 200 N·m, efficiency of about 0.9–0.94 and maximum torque up to 60 700 N·m.

How to choose

Cooling is by water through a stainless steel jacket (IC 3W7), without a fan, so the motor is quiet. Degree of protection IP54, class H insulation with a temperature rise of 125 K, vibration resistance 3 g radially and 1 g axially. There is a solid shaft, a hollow one and a shaft with an integrated thrust bearing that takes the axial forces of the extruder screw. For DST2-560 winding redundancy is provided, so if one system is damaged the motor keeps running at reduced power. The supply is low-voltage, from b maXX 5500/6500 servo converters.