... ,QGA,QGAII,QGB,QGBII,JB series QGBZ series pneumatic cylinder belongs to new pattern design, are all in line with ... ISO/6430. Sturdiness and durability, which two sides are with adjustable cushioning device, and also used widely. 1. Bore:50 / 63 ... 1-3000 mm, extra stroke is avalaible.3. Single acting/ Double acting4. Accessories like valve, hose, muffler etc are avalaible5. Various ...