The new S250 Screener rises above all industry standards, positioned as one of the world's largest track mobile screeners. The 22 x 6 heavy duty high energy 2 bearing. See Full Details. 628 RE. The 628 Trommel Screener is suited for large heavyduty appliions. With a 6' diameter screen, the 628 Trommel generates a powerful screening action while the 28' long drum ...