Product Description:

The S34SNNA-RNNM-03 is a 6-pole neodymium magnet brushless servo motor manufactured by Pacific Scientific within the S Brushless Motors series. Designed for closed-loop motion axes in industrial automation, it converts electrical power into precisely controlled rotary motion while fitting equipment that follows the NEMA mounting convention. Power and signal conductors exit through a motor-mounted MS connector, which keeps external wiring direct and compact.

This model supplies a continuous stall torque of 6.6 Nm, so it can hold or drive a load at rated current without overheating. For brief accelerations or load surges, it can produce up to 25.3 Nm of peak torque, expanding the dynamic range available to the drive. The frame conforms to the NEMA 34 dimensional envelope, simplifying interchange with other motors that share the same bolt circle and shaft height. Rotor inertia is 0.64 kgm² x10^-3, giving a balance between quick speed changes and stable velocity regulation. Overall mass is 8.1 kg, so the motor has enough thermal capacity for continuous duty while remaining suitable for machine installation. It attaches to machinery through a NEMA frame face, and it is supplied without a holding brake, so external measures must secure vertical or suspended loads when power is removed.

The primary feedback element is a Size 21 frameless resolver, providing absolute rotor position for servo control without requiring a secondary feedback path. Torque density is aided by the laminated stator's 4-stack length, which increases active iron without enlarging the frame. Because there is no shaft seal, the installation site must exclude coolant spray or fine particulates from the motor nose. The design also omits any secondary feedback device, keeping the system architecture straightforward.