S33ANNH-RNNM-00 Pacific Scientific
Wake Industrial LLC is not an authorized distributor of this product.
Wake Industrial LLC is not an authorized distributor of this product.
The Pacific Scientific S33ANNH-RNNM-00 is a 6-pole Neodymium magnet brushless servo motor from the S Brushless Motors series. It has a continuous stall torque of 5.3 Nm, peak torque of 15.3 Nm, and weighs 6.5 kilograms. This motor uses a NEMA 34 frame with a size 21 frameless resolver as the primary feedback device and features high voltage construction with a motor mounted MS connector.
Internal Product Review
The S33ANNH-RNNM-00 is a 6-pole neodymium magnet brushless servo motor in a NEMA 34 frame. Continuous stall torque of 5.3 Nm and peak torque of 15.3 Nm give the motor strong authority in demanding servo applications. A size 21 frameless resolver provides dependable feedback, a clear strength for precise motion control.
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Product Description:
The S33ANNH-RNNM-00 is a 6-pole Neodymium magnet brushless servo motor produced by Pacific Scientific for the S Brushless Motors series. Built on the NEMA frame standard and sized to the NEMA 34 envelope, the unit fits common industrial mounts used in indexing tables, packaging heads, and coordinated axes. Its factory-supplied high-voltage construction matches contemporary bus levels, while a size 21 frameless resolver supplies primary position feedback and no secondary feedback device is installed. Because the motor does not include an integrated brake, holding force must be provided by external equipment when the axis is stopped.
At stall, the motor develops a continuous torque of 5.3 Nm, and it can reach up to 15.3 Nm during short acceleration bursts. A torque constant of 1.5 Nm/ARMS links phase current directly to output torque, which helps the connected drive respond in a predictable way during speed changes and load disturbances. The line-to-line inductance is 17.0 mH, which helps limit peak current rise during PWM operation, while the winding resistance of 5.2 Ω contributes to the copper losses that affect motor heating. Together, these values describe the motor’s electrical behavior during closed-loop operation without repeating separate mechanical features.
With a mass of 6.5 kg, the assembly suits machines that can accommodate moderate payload while still requiring responsive motion. The rotor presents an inertia of 0.48 × 10⁻³ kg·m², which supports quick changes in speed and direction with limited overshoot when the axis is properly tuned. A back-EMF gradient of 0.94 VRMS/rad/sec indicates the voltage returned to the drive during regeneration, and the laminated core uses a 3 Stack configuration. Power and feedback conductors terminate through a motor-mounted MS connector for straightforward connection, and the motor has no shaft seal, so external sealing is needed where washdown, dust, or fluid exposure is expected.
