SMC CQ2 Z Series Long Stroke Type Compact Cylinder, Double Acting,Single Rod, CDQ2A63 300DCMZ L Clamp Lightweight Measuring range (mm): 30 45 Measuring range (mm): 30 45 Specification item model symbol Specification information With auto switch D With auto switch form pneumatic type Mounting support type B Basic type (with bosses on both sides) tube inner diameter 40 tube inner diameter 40mm Types of port screws Rc cylinder stroke 50 cylinder stroke 50mm cushion A air cushion Rod end screw shape rod end male thread with bellows doesn't exist auto switch Without auto switch Auto switch additional symbol 2 with or without Custom made specifications standard