Servo Specs, Reviews, & Comparison Tool
Cirrus CS-90BB - Low Profile Servo
Specifications
| Last Updated: | 2025-08-04 |
| Modulation: | (add) |
| Torque: |
4.8V: 36.10 oz-in (2.60 kg-cm) |
| Speed: |
4.8V: 0.23 sec/60° |
| Weight: | 1.13 oz (32.0 g) |
| Dimensions: |
Length:1.75 in (44.5 mm) Width:0.88 in (22.4 mm) Height:1.13 in (28.7 mm) |
| Motor Type: | (add) |
| Gear Type: | (add) |
| Rotation/Support: | Single Bearing |
| Rotational Range: | (add) |
| Pulse Cycle: | (add) |
| Pulse Width: | (add) |
| Connector Type: | (add) |
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Notes
- The discontinued Cirrus CS-90BB is a premium, quarter-scale analog servo that enhances the powerful CS-90 platform with a precise and durable dual ball bearing (BB) supported output shaft. This servo is designed for giant-scale applications where both immense torque and a high degree of smoothness and accuracy are desired. It is an outstanding choice for the flight controls on a large scale aerobatic or pattern aircraft, where its smooth, slop-free operation contributes to a more precise and professional flight presentation. It is also a superb steering servo for 1/5 scale on-road race cars, where its precision is key to hitting perfect racing lines.
- The character of the CS-90BB is its "refined giant power." It delivers the massive torque needed for giant-scale models, but the dual ball bearings ensure that this power is translated with exceptional smoothness and accuracy. This provides a very direct, high-fidelity control feel that is prized by competitive pilots and drivers. The ball bearings also significantly increase the servo's lifespan under the heavy loads of these applications, making it a wise investment for a serious giant-scale enthusiast.
- In advanced, large-scale robotics, the CS-90BB is a superior choice for projects that need both power and precision. It is ideal for the joints of a large robotic manipulator that must perform its tasks with a high degree of repeatable accuracy. It would also be an excellent actuator for a large, heavy camera jib or a scientific pointing system where both strength and smooth, stable motion are required. It offers a premium level of performance for the most demanding large-scale robotics projects.
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