FEETECH High-Torque, High-Voltage Digital Servo FT5121M

The FT5121M is a standard-size digital servo from FEETECH that is capable of delivering extra-high torque normally associated with more expensive or larger servos thanks to its powerful coreless motor and an all-metal gear train. The output shaft is supported by two ball bearings for reduced friction. The FT5121M is a high-voltage servo, offering an operating voltage range of 6 V to 7.4 V. Servo horns and associated hardware are included. 

Key specs at 7.4 V: 0.12 sec/60°, 285 oz-in (20.5 kg-cm), 60 g.

Specifications:

Size: 40.5 × 20.5.× 37.5 mm

• Weight:60 g
• Digital?: Y
• Speed @ 7.4V: 0.12 sec/60°
• Stall torque @ 7.4V: 20.5 kg·cm
• Speed @ 6V: 0.15 sec/60°
• Stall torque @ 6V: 17.5 kg·cm
• Lead length: 25cm
• Hardware included?: Y