Servo Specs, Reviews, & Comparison Tool
GWS S687-2BB - Heavy Duty Servo
Specifications
| Last Updated: | 2025-08-07 |
| Modulation: | Analog |
| Torque: |
4.8V: 275.00 oz-in (19.80 kg-cm) 6.0V: 333.00 oz-in (23.98 kg-cm) |
| Speed: |
4.8V: 0.12 sec/60° 6.0V: 0.11 sec/60° |
| Weight: | 5.11 oz (145.0 g) |
| Dimensions: |
Length:2.48 in (63.0 mm) Width:1.26 in (32.0 mm) Height:2.43 in (61.7 mm) |
| Motor Type: | (add) |
| Gear Type: | Plastic |
| Rotation/Support: | Dual Bearings |
| Rotational Range: | (add) |
| Pulse Cycle: | (add) |
| Pulse Width: | (add) |
| Connector Type: | (add) |
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Notes
- The discontinued GWS S687-2BB is a high-quality standard-sized analog servo that is distinguished by its exceptionally smooth and precise operation, thanks to a high-quality gear train and a dual ball bearing (2BB) supported output shaft. This servo is aimed at the discerning hobbyist who values a refined control feel and long-term reliability. While it offers strong all-around performance, its main selling point is the precision that the ball bearings provide. This makes it a superb choice for the flight controls on a pattern or scale aerobatic airplane, where smooth, proportional movements are essential for a high-quality presentation. It is also an excellent steering servo for a 1/10 scale touring car, where its slop-free accuracy helps in carving perfect, consistent cornering lines.
- The character of the S687-2BB is defined by its precision and longevity. The dual ball bearings create a very rigid and low-friction geartrain, resulting in perfect centering and a direct, connected feel. This allows pilots and drivers to execute maneuvers with a higher degree of finesse and accuracy. The ball bearings also dramatically reduce wear, meaning the servo maintains its ""like-new"" precision for much longer than a bushing-equipped servo. It is an investment in a higher quality of control.
- In robotics, the S687-2BB is an excellent choice for applications where smooth, accurate motion is a priority. It is ideal for building stable camera gimbals, precise sensor-scanning platforms, or the joints of a robotic arm where repeatable positioning is critical. For any robotics project where a smooth, controlled, and accurate motion is more important than raw, brute-force torque, the S687-2BB offers a superior level of performance."
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