5 Parameters That Actually Matter When Choosing a Winding Machine

2026-06-12 · Longjiang Engineering Team

After 10+ years building winding machines, the most common question we get is "what's your cheapest machine?" It's like asking "how much is a car" — a minivan and a Mercedes are both cars.

Winding machines aren't commodities. The same stator can be wound on an entry-level single-station machine or a high-speed six-station line — the difference isn't small. Pick the wrong model and you either can't meet delivery deadlines or you paid for features you'll never use.

Here's what we actually look at when recommending a machine:

1. Stator dimensions

Three numbers matter: inner diameter, outer diameter, and stack height (core length). ID determines whether the winding nozzle fits inside. OD and stack height define the fixture range. The LJ-7HS-400, for example, handles up to 400mm OD and 200mm stack height. Grab a caliper, measure your stator, send us a photo — that tells us more than a hundred emails.

2. Wire gauge

0.1mm wire (thinner than human hair) and 2.0mm wire require completely different tension control, winding precision, and speed. Finer wire = more sensitive to tension fluctuation — too much tension snaps it, too little makes loose coils. Our machines cover 0.05mm to 3.0mm, with different models optimized for different ranges.

3. Daily output target

A customer says "I need 500 stators per day." Simple math: 500 ÷ daily output per machine = how many machines. An entry-level single-station does ~100-150/day. A six-station high-speed model does 500-800/day. Don't buy three slow machines when one fast one does the job — more machines mean more operators, more tooling, more maintenance.

4. Winding method

Internal winding (nozzle goes inside the stator) covers most BLDC motors. External winding suits outer-rotor designs. Flying-fork is for ultra-fine wire or high-precision applications. We build all three types — we recommend what fits your stator, not what's more expensive.

5. Automation level

Manual loading/unloading works for high-mix, low-volume production. Fully automated lines (with conveyors, inspection stations) make sense for high-volume, single-SKU production. Start with a standalone machine. Once orders stabilize, add automation modules. Our equipment supports field upgrades.