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Blue Bird BMS-373BB - Small Servo
Specifications
| Last Updated: | 2025-08-04 |
| Modulation: | Analog |
| Torque: |
4.8V: 22.20 oz-in (1.60 kg-cm) |
| Speed: |
4.8V: 0.11 sec/60° |
| Weight: | 0.34 oz (9.6 g) |
| Dimensions: |
Length:0.97 in (24.6 mm) Width:0.45 in (11.4 mm) Height:0.91 in (23.1 mm) |
| Motor Type: | (add) |
| Gear Type: | Plastic |
| Rotation/Support: | Single Bearing |
| Rotational Range: | (add) |
| Pulse Cycle: | (add) |
| Pulse Width: | (add) |
| Connector Type: | (add) |
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Notes
- The discontinued Blue Bird BMS-373BB enhances the high-speed, coreless motor design of the standard BMS-373 with the crucial addition of a ball bearing (BB) on the output shaft. This creates a servo that is not only fast but also exceptionally precise and durable. It is targeted at competitive pilots and discerning hobbyists who understand that speed without precision is wasted. The primary application remains in high-performance roles like helicopter tail control or aerobatic ailerons, but the ball bearing adds a new level of refinement. It rigidly supports the output shaft, minimizing friction and eliminating side-to-side play, which ensures that the servo's incredible speed is translated into pure, accurate rotational movement.
- The combination of a coreless motor and a ball bearing results in a servo with truly elite performance characteristics. The coreless motor provides the raw speed and smooth response, while the ball bearing ensures that this performance is delivered with pinpoint accuracy and that it doesn't degrade over time by developing slop. This leads to a control system that feels both incredibly fast and exquisitely precise. It’s the kind of servo that can provide a real competitive advantage, where perfect centering and zero hesitation are required to execute complex routines flawlessly.
- In the field of robotics, the BMS-373BB is a premium actuator for tasks that demand both high speed and high precision. It would be an ideal choice for building a small, high-speed camera gimbal for a tracking system, where smooth motion and zero slop are critical for maintaining a lock on a target. It would also excel in laboratory automation, for applications like high-speed sample handling or optical component positioning, where both rapid movement and perfect, repeatable accuracy are required. It offers a level of performance that can enable more advanced robotic applications.
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