Most BLDC stators use concentrated windings, where each coil sits around a single tooth. Two machine types dominate this work.
Needle winding
A hollow needle carries the wire and moves in and out of the slot while the stator indexes. The needle places each turn directly into the slot, so the stator does not need to be split. Needle winding is the standard choice for one-piece stators, especially outer-rotor stators with open slots.
Flyer winding
A rotating flyer throws the wire around a stationary bobbin or stator segment. It runs faster and lays very orderly layers, which improves slot fill. The trade-off is that the stator must be segmented or the coils pre-wound on bobbins.
How to choose
- One-piece outer stator: needle winding
- One-piece inner stator with narrow slots: needle winding with slim needles
- Segmented or chain-core stator: flyer winding
- Bobbin coils: flyer winding
Compare our stator winding machines.