S31GNNA-RNUM-00

Product Description:

The S31GNNA-RNUM-00 from Pacific Scientific sits in the S Brushless Motors series and brings together strength, smart feedback, and an industrial build for work that doesn’t quit. Start with a continuous stall torque of 2.2 Nm—that provides steady pull when motion needs tight control, even if things on the line slow or jam. A peak torque of 6.2 Nm means quick bursts of effort if loads get heavy. The motor weight, 3.2 kg, keeps everything stable but doesn’t make installation tricky.

The feedback system on this unit uses a size 21 frameless resolver for the primary check, giving real-time updates to the servo controller so movement tracks smooth and doesn’t jump or lag. Electrical connection is straight to a motor-mounted MS Connector, streamlining both assembly and repair since awkward cabling isn’t in the way. This NEMA 34 frame size helps it drop right into standard industrial mounts. Vibration dampening feels good once tightened down, especially in fast cycle lines or moving arms. With no secondary feedback built in, the design stays simple, giving fewer points of failure to worry about down the road.

Torque and efficiency also depend on the internal windings and resistance. This model’s 1.3 Nm/ARMS torque constant and 16.4 Ohms resistance give a steady transfer of power without sudden spikes, while the 0.82 VRMS/rad/sec voltage constant matches up with common drive options out there. Rotor inertia isn’t overlooked, shown as 0.18 kgm^2 x10^-3, which helps deliver quick stops and controlled starts without much overshoot. The inductance of 41.2 keeps interference low, giving clean operation. With its 1 Stack length and frameless mount, this motor doesn’t just work for one job type. Factories, pick-and-place stations, and packaging areas use it when reliability and compact design count more than extra features. Built for staying on task under load.