S037 3.7g Micro Digital Servo with Aluminum Gear

Product Overview

S037 3.7g Micro Digital Servo with Durable Aluminum Output Shaft

The S037 3.7g Micro Digital Servo is engineered specifically for weight-sensitive RC aircraft, indoor 3D foam flyers, mini helicopters, and micro robotics. Combining an ultra-compact footprint with an upgraded CNC machined aluminum output spline shaft, the S037 eliminates the common issue of stripped servo horns found in traditional all-plastic micro servos.

Upgraded Digital Driver & Coreless Motor Performance

Equipped with an advanced digital control circuit and a fast-responding micro coreless motor, the S037 delivers fast transit speeds (up to 0.07s/60°) and excellent holding torque. The digital processing ensures high resolution, superior holding power, and precise return-to-center capability, which is crucial for sensitive control surfaces during aggressive aerobatic maneuvers.

Durable Gear Train & Universal Compatibility

Designed to withstand accidental impacts and control surface flutter, the internal gear train utilizes high-grade materials coupled with a reinforced metal output shaft. Pre-wired with a flexible 150mm ribbon cable and a standard 3-pin JR connector, the S037 is a plug-and-play solution compatible with Spektrum, Futaba, FrSky, Flysky, and other mainstream receivers.

Key Integration Benefits

• Aluminum Horn Spline: Provides a rigid interface for servo arms, drastically reducing slop over time.
• Lightweight Design: At only 3.7 grams, it allows builders to keep the all-up weight (AUW) of indoor airframes as low as possible.
• Flexible Power Compatibility: Operates efficiently across 3.7V to 6.0V, making it ideal for direct 1S LiPo or regulated 5V BEC receiver power buses.

Technical Specifications

Key Features

Applications