A new 4-Poles brusless motor servo A81FHM is here! It is programmable standard digital servo with 74KG super torque. The design feature of this new product is the use of high-quality 4-poles brushless motors, and the metal four bearing adopts dust-proof bearing, which effectively improve the product's sealing and dust-proof and splash-proof effects. Its sturdy new CNC shape adopts a fast cooling design of the heat sink, which can achieve a good heat dissipation effect while servo is working and prevent the phenomenon of being hot. It is very suitable for scenes that require large torque applications, such as some large rc aircraft, 1/8 1/10 scale rc off-road vehicles, monster trucks, and crawler car competitions. 

Feature 

High Performance Digital Standard Powerful Servo

High Quality Long Lifespan 4-Poles Brushless Motor

Heat Sink Fast Cooling CNC Case Design

Enhanced Steel Gears And Pin Shaft

Strong Sealing And Dustproof Metal Four Bearings

High Precision 25T Horn Gear Spline

Support Programmable User Parameters

Ideal For 1/8 1/10 On-Road, Off-Road, Monster Truck, Large Size Plane, Helicopter, Robot And Engine Etc.

Specification

Item name: A81FHM

Operating Voltage: 4.8-8.4V

Operating speed: 0.190sec/60° @ 4.8V

Operating speed: 0.165sec/60° @ 6.0V

Operating speed: 0.135sec/60° @ 7.4V 

Operating speed: 0.125sec/60° @ 8.4V 

Stall Torque: 45 kg-cm (625 oz-in) @ 4.8V

Stall Torque: 55 kg-cm (764 oz-in) @ 6.0V

Stall Torque: 65 kg-cm (903 oz-in) @ 7.4V

Stall Torque: 74 kg-cm (1028 oz-in) @ 8.4V 

Gear: Steel

Motor: 4-Poles Brushless Motor

Size: 40*20*38mm (1.57 x 0.78 x 1.5 in)

Weight: 85g 

Connector Wire: TYU 300 mm / 22AWG