Semi-rotary drive DRQ-50-270-PPVJ-A For proximity sensing, with adjustable end-position cushioning and backlash-compensating gearing. Size=50, Cushioning angle=84 deg, Setting range of swivel angle on both sides=-7 /+ 8 deg, Swivel angle=270 deg, Cushioning=PPVJ: Pneumatic cushioning, adjustable