Feetech FT7125M 7.4V 25kg.cm 180° Steel Gear Digital Servo

The Feetech FT7125M is a high-torque digital servo with steel gears, ball bearings and an aluminium case, rated 25kg.cm at 7.4V and up to 28.5kg.cm at 8.4V. It handles large fixed-wing control surfaces, heavy payload release and gripper mechanisms, RC vehicle steering and robot arm joints.

Key features

• Steel gear train for heavy, shock-prone loads
• Wide 4–8.4V input: run it from a 6V BEC, a high-voltage servo rail or directly on 2S LiPo
• 180° (±5°) travel over a 500–2500µs pulse range with digital comparator control
• 9.5kg.cm rated torque at 8.4V for sustained loads
• Metal horn on a 25T, 5.9mm output spline

Specifications

• Stall torque: 25kg.cm at 7.4V, 28.5kg.cm at 8.4V
• Rated torque: 9.5kg.cm at 8.4V
• Speed: 0.139 sec/60° (58 RPM) at 8.4V
• Operating voltage: 4–8.4V
• Stall current: 3.4A at 8.4V
• No-load current: 160mA at 8.4V
• Travel: 180° ±5° (500–2500µs)
• Gears: Steel
• Motor: Cored
• Bearings: Ball bearings
• Case: Aluminium
• Horn: Metal, 25T/5.9mm spline
• Dimensions: 40.16 x 20.16 x 40.05mm
• Weight: 64.5g (±1g)
• Lead length: 300mm
• Operating temperature: -15 to 70°C

With up to 3.4A stall current per servo, size the servo BEC for the combined stall draw of every servo on the rail rather than relying on a flight controller's onboard regulator.