Geschwindigkeitsgeregelte Antriebe und Bremsen (bahnzugregelbarer Antrieb) - Frequency- and RPM-controlled worm-gear motor combinations that can either drive (rewinder) or brake (decoiler) a winding shaft with continuously adjustable torque. They are the heart of web-tension control. Supplier: Mädler (Germany) - worm-gear motors (Schneckengetriebemotoren Mädler).

Technical configurations (from Mädler spreadsheet)

Clutch torque	Power loss (brake mode)	Motor W	Gear series	Price range (EUR)	Output torque	Output RPM
12 Nm	140 W	90 - 370 W	045	€ 326 - 366	13 - 200 Nm	15 - 200
25 Nm	220 W	90 - 550 W	045 / 050	€ 326 - 437	24 - 140 Nm	15 - 140
50 Nm	330 W	120 - 1,100 W	045 / 050 / 063	€ 351 - 629	48 - 144 Nm	12.9 - 144
100 Nm	480 W	250 - 1,500 W	063	€ 508 - 670	82 - 143 Nm	13.4 - 143
200 Nm	750 W	1,100 - 1,500 W	063	€ 629 - 670	150 - 180 Nm	40 - 75

Each drive requires a separate frequency controller (e.g. Siemens / Danfoss). Approx. 350 3D hull models are required to cover all drive/gear combinations for the online shaft configurator.

Pricing

Per the table above - gear-dependent. Frequency controller is priced separately. Drives are used as brakes by dissipating energy across the frequency controller's braking resistor. Mädler is a German supplier - for cost optimisation the same gearbox/motor class may be sourced from a Chinese equivalent, then CE-labelled.

Speed-Regulated Drives and Brakes

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