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Blue Arrow S04312 - Sub-Micro High Torque Servo
Specifications
| Last Updated: | 2025-08-04 |
| Modulation: | Analog |
| Torque: |
4.8V: 6.94 oz-in (0.50 kg-cm) 6.0V: 8.33 oz-in (0.60 kg-cm) |
| Speed: |
4.8V: 0.11 sec/60° 6.0V: 0.09 sec/60° |
| Weight: | 0.17 oz (4.8 g) |
| Dimensions: |
Length:0.77 in (19.6 mm) Width:0.34 in (8.6 mm) Height:1.06 in (26.9 mm) |
| Motor Type: | (add) |
| Gear Type: | Plastic |
| Rotation/Support: | (add) |
| Rotational Range: | (add) |
| Pulse Cycle: | (add) |
| Pulse Width: | (add) |
| Connector Type: | JR |
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Notes
- The discontinued Blue Arrow S04312 is a specialized variant in the versatile 4.3-gram analog servo family that is engineered to emphasize holding power and torque. It is designed to excel in situations where the servo must withstand significant external forces. This makes it the perfect choice for faster models where aerodynamic pressures are high, or for aircraft with large control surfaces that act like sails in the wind. For example, on a fast-flying wing or a small "hotliner" glider, the pressure of the air can physically push a weaker servo's gears back, leading to a loss of precision. The S04312 uses an optimized motor and gear ratio to powerfully resist this "blowback," ensuring that the control surface remains locked in its commanded position.
- The key benefit that this servo provides to pilots is a solid, unwavering connection to their aircraft. With the S04312 installed, control surfaces feel firm and responsive, with no "mushiness" or give, even during high-speed dives or tight, high-G turns. This leads to a more predictable and stable flight path, as the aircraft is not being pushed around by the airflow. This solid feel inspires confidence and allows the pilot to fly more precise lines and execute maneuvers with greater accuracy.
- For roboticists, this characteristic is incredibly useful. The S04312 is a great actuator for applications that need to hold a position firmly against an external force. It would be ideal for the leg joints on a heavier small walking robot, providing the strength to support the robot's weight without buckling. It would also be an excellent choice for a robotic gripper that needs to maintain a secure, non-slip hold on an object, or for any mechanism that functions as a lock or a clamp where holding strength is the most important attribute.
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