25” ring gear bearing drive/support. AC variable frequency drives and motors for safe, reliable performance and minimal maintenance. 20” NO-THREAD® powered pre-stretch carriage with 50-300% pre-stretch. Rotary arm speed up to 12 RPM. Oversize load flexibility. Unlimited load weight capacity. 40-50 loads per hour. 3-year unlimited cycle warranty . 10-year warranty on the ring-gear bearing drive. Lifetime warranty on the Wulftec's blue pre-stretch compound rollers.