T-Motor A8-X KV115 Modular Propulsion System

The T-Motor A8-X KV115 is a complete arm propulsion unit for agricultural and heavy-lift multirotors: an 81 × 20 mm brushless motor, a 14S FOC 80A ESC and an MF3119P 31-inch polymer folding propeller, supplied pre-assembled and pre-wired for 40 mm arm tubes. T-Motor sizes it for 10 L spray quadcopters at 22–30 kg take-off weight and 16 L hexacopters at 30–42 kg.

Key features

• Thrust: 5–7 kg rated per arm and 19 kg maximum, with 9.53 g/W efficiency at 5.2 kg.

• FOC ESC built in: accepts PWM or CAN throttle, with DroneCAN, UAVCAN and Cube CAN protocol support.

• 12–14S LiPo: 44.4–51.8 V nominal; the ESC is rated to 61 V maximum.

• IPX6 sealing: built for spray mist, dust and rain on field operations, with a -30 to 50 °C operating range.

• One-piece swap: motor, ESC and folding prop come wired together, so a damaged arm unit is replaced as a single assembly.

• CW and CCW versions: each listing is one unit — order matching rotations for your layout (2 + 2 on a quad, 3 + 3 on a hexa).

Specifications

• Stator: 81 × 20 mm

• KV: 115

• ESC: 14S FOC, 80 A peak

• ESC max voltage: 61 V

• Throttle input: PWM / CAN (DroneCAN, UAVCAN, Cube CAN)

• Recommended battery: 12–14S LiPo

• Propeller: MF3119P polymer folding, 31 in (784 mm)

• Arm tube: 40 mm

• Rated thrust: 5–7 kg

• Max thrust: 19 kg

• Efficiency: 9.53 g/W at 5.2 kg thrust

• Weight: 1180 g ±2% (incl. wires and propeller)

• Ingress protection: IPX6

• Operating temperature: -30 to 50 °C

• Recommended take-off weight: 22–30 kg (quad), 30–42 kg (hexa)

• In the box: 1 × A8-X motor with integrated FOC ESC, 1 × MF3119P folding propeller, pre-installed wiring

Before ordering, confirm your frame's arms are 40 mm tubes and set the flight controller's motor outputs for PWM or CAN to match how you plan to wire the ESCs.