3115 Drone Motor External Winding Machine

What type of motor is the 3115 external winding machine?

The 3115 drone motor is an external rotor brushless motor, with the stator on the inside and the coils wound externally, not internally.

Industry standard: 12 slots, 14 poles (12N14P); common KV ratings: 640/900/1050.

Winding method: Fly-fork external winding (external winding machine)

Stations: Dual-station / Quad-station (4-station recommended for mass production)

Wire gauge: 0.18–0.25 mm single strand or 3×0.12–4×0.13 mm parallel winding

Turns: KV900 ≈ 12 turns per phase (4 turns/slot × 3 slots/phase)

Key parameters of the 3115 external winding machine

Stator: 12 slots, outer diameter 31 mm, stack thickness 15 mm, inner diameter 13 mm

Winding method: Fly-fork external winding, 1–4 spans (12N14P standard)

Stations: 4 stations (recommended) / 2 stations

Wire diameter: 0.18–0.25mm (single strand) or 3×0.12mm

Turns: KV900 → 12 turns per phase (4 turns per slot)

Tension: Precision tension controller, ±5g (prevents breakage of fine wires and prevents over-stretching)

Speed: 800–1500 rpm

Control system: Servo + PLC + touchscreen, with recipe storage

Automatic functions: Automatic feeding / winding / indexing / wire arrangement / cutting / unloading (optional)