Product Description:

The S34ANNH-RNNE-00 belongs to the S Brushless Motors series produced by Pacific Scientific. It is a 6-pole neodymium magnet brushless servo motor intended to supply closed-loop torque and speed control on industrial axes, pick-and-place heads, and packaging stations. The motor is built on a NEMA frame layout, so it fits machinery designed around that dimensional standard without additional adapters. Its brushless design supports precise electronic commutation and reduces wear associated with mechanical brushes in continuously cycling equipment.

Under steady load, the unit can deliver 6.6 Nm of continuous stall torque, and its peak mechanical output reaches 25.3 Nm for short acceleration bursts. A winding inductance of 14.7 mH and a line-to-line resistance of 4.4 ohms shape the electrical time constant seen by the drive, while the torque constant is rated at 1.7 Nm/ARMS for straightforward current-to-torque mapping. The motor uses high-voltage construction from the factory, allowing the windings to operate with wider DC bus levels common in modern servo amplifiers. It is supplied without a holding brake and without a shaft seal, so external protection or a separate holding method may be required for some installations. Feedback is provided by a size 21 frameless resolver, and no secondary feedback device is installed. Four laminated stator stacks form the active magnetic length, and Winding Type A is used with these stacks to set the rated speed constant. Power and signal leads exit through dedicated connectors that support clean cable routing on the machine.

Total mass is 8.1 kg, giving the motor a moderate load for light gantry systems and similar moving axes. The rotor inertia is only 0.64×10⁻³ kg·m², which helps the velocity loop respond quickly when tool payloads or command speeds change. Frame size NEMA 34 matches common gearboxes and flange kits used in conveyor or indexer assemblies. A voltage constant of 1.07 VRMS/rad/sec suits drives that operate with higher back EMF, and the NEMA mounting pattern supports straightforward installation in standard machine layouts.