Semi-rotary drive DRQ-20-180-PPVJ-A For proximity sensing, with adjustable end-position cushioning and backlash-compensating gearing. Size=20, Cushioning angle=78,3 deg, Setting range of swivel angle on both sides=-4 /+ 4 deg, Swivel angle=180 deg, Cushioning=PPVJ: Pneumatic cushioning, adjustable