S33GNNA-RNNM-00 Pacific Scientific
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The Pacific Scientific S33GNNA-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 and a peak torque of 15.3 Nm, with a NEMA 34 frame size and NEMA frame mounting standard. The motor weighs 6.5 kg and uses a size 21 frameless resolver as its primary feedback device.
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Product Description:
The S33GNNA-RNNM-00 is a six-pole neodymium magnet brushless servo motor manufactured by Pacific Scientific for the S Brushless Motors series. Within an automated cell, it provides precisely commanded torque and speed so that positioning tables, pick-and-place heads, or indexing axes follow motion profiles generated by a servo drive controller. This makes the motor suitable for applications that need repeatable motion, stable speed control, and accurate positioning over changing load conditions.
This model can hold a continuous stall torque of 5.3 Nm, allowing the shaft to sustain static loads without overheating. Dynamic work is supported by a peak output of 15.3 Nm that can be used for rapid acceleration events. The electromagnetic circuit presents a line-to-line inductance of 25.2 mH, and the winding resistance is 8.4 Ohms; together these values affect current rise time and the voltage required for full-speed operation. A torque constant of 1.9 Nm/ARMS relates commanded phase current to produced torque, letting the drive regulate current accurately during low-speed and mid-range moves. These electrical values correspond to the motor's G winding code and help with drive selection.
The housing follows the NEMA frame mounting standard, with the flange sized to NEMA 34; this simplifies installation on existing brackets. A three-stack lamination build increases magnetic length while keeping the motor weight to 6.5 kg. Rotor inertia is only 0.48 × 10⁻³ kg·m², giving fast speed changes when coupled to low-inertia loads. Feedback is supplied by a size 21 frameless resolver, and the motor has no secondary feedback, brake, or shaft seal. Power and resolver lines exit through a motor-mounted MS connector, and the voltage constant of 1.19 VRMS/rad/sec helps the drive estimate back EMF for field-oriented control.
Frequently Asked Questions about S33GNNA-RNNM-00:
Q: What is the continuous stall torque rating for the S33GNNA-RNNM-00 servo motor?
A: The S33GNNA-RNNM-00 servo motor has a continuous stall torque of 5.3 Nm.
Q: What type of feedback device is used in the S33GNNA-RNNM-00 motor?
A: This model utilizes a size 21 frameless resolver as its primary feedback device.
Q: What is the NEMA frame size for the S33GNNA-RNNM-00 motor?
A: The S33GNNA-RNNM-00 is designed with a NEMA 34 frame size for mounting.
Q: Is a holding brake included with the S33GNNA-RNNM-00 motor?
A: This model does not include a holding brake.
Q: What termination style is provided on the S33GNNA-RNNM-00 brushless motor?
A: The termination style for this motor features a motor mounted MS Connector.
