S21HSNA-RNNM-03
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The S21HSNA-RNNM-03 is a brushless motor with a peak torque of 36 lb-in and a rotor inertia of 0.001 oz-in sec². Manufactured by Pacific Scientific as part of the S Brushless Motors Series, it features NEMA 23 (2.28'' square) mounting. The motor has TENV washdown construction and includes a built-in PTC thermistor for thermal protection.
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Product Description:
Designed to provide accurate motion control in demanding applications, the S21HSNA-RNNM-03 Brushless motor is a high-performance motor manufactured by Pacific Scientific. Consistent performance under varied operating situations is ensured by this motor's powerful torque output and efficient heat management. This design is a dependable part of complicated motion control systems because it uses modern materials and building techniques that increase efficiency and longevity.
The S21HSNA-RNNM-03 brushless motor delivers a sustained stall torque of 49x10-1 Nm and a peak torque of 1.39 Nm. The motor is capable of quick acceleration and deceleration due to its inertia of 0.000022 kg·m². Reduced operational energy loss is achieved by the viscous damping coefficient that is 3x10-3 Nm/Krpm. Static friction is restricted to 0.008 Nm to provide smooth starting and stopping. Because of its dependability and longevity, this S series motor is perfect for use in automated industrial operations. For thermal considerations, contact the manufacturer, and peak torques or currents greater than three times the continuous rating should be handled with caution. The motor's weight of 1.4 kg provides a suitable balance of robustness and system integration simplicity. Including feedback devices and holding brakes in the design can meet a variety of inertia needs.
The S21HSNA-RNNM-03 motor features a peak sinusoidal waveform value that is important for applications that require precise torque control. When connected to a 10" x 10" x 1/4" aluminum heat sink in a 25°C ambient environment, the heat dissipation is effective due to the 2.2 °C/Watt thermal resistance. Mounting conditions suited for an ambient temperature of 25°C, as well as an aluminum heat sink, boost thermal management capabilities. The motor is designed to reliably and efficiently meet the demanding requirements of motion control systems.
Frequently Asked Questions about S21HSNA-RNNM-03:
Q: Why does S21HSNA-RNNM-03 have thermal resistance?
A: The thermal resistance helps dissipate heat efficiently, maintaining stable motor performance and protecting components during continuous operation.
Q: Does S21HSNA-RNNM-03 support high peak torque?
A: Yes, it supports a peak torque of 1.39 Nm, enabling short bursts of high power for dynamic load conditions.
Q: How does S21HSNA-RNNM-03 manage thermal overloads?
A: Its thermal time constant of 5 minutes allows quick heat dissipation, reducing thermal stress during fluctuating load operations.
Q: Why is inertia low in S21HSNA-RNNM-03?
A: Low inertia (0.022 kg·m² × 10⁻³) allows rapid acceleration and deceleration, improving responsiveness in motion control applications.
Q: Do S21HSNA-RNNM-03 motors have static friction?
A: Yes, with a static friction of 0.008 Nm, it ensures smooth starting and stopping for precise motion control.
