BLUETEC BT30 BT40 BT50 Collet Chuck, ER20 Bore Size_0031^7mm Specification item model symbol Specification Specification item model symbol Specification information built in magnet D built in magnet installation support A both ends tab tube inner diameter 50 tube inner diameter 50mm Types of port screws Rc M screw cylinder stroke 30 cylinder stroke 30mm dual stroke mark No dual stroke mark cylinder stroke 2 Cylinder stroke 2 None body options Standard (rod end female thread) Auto switch mounting groove Z ø12 ø25 2 sides ø32 ø63 4 sides auto switch Without auto switch Auto switch additional symbol 2 with or without Custom made specifications standard 000 mm Maximum RPM (Grease) 2800 RPM Fillet Radius 0