NIKKEN BT30 BT40 Milling Chuck SEOUL Specification item model symbol Specification Specification item model symbol Specification information built in magnet D built in magnet installation support A both ends tab form pneumatic type tube inner diameter 32 Bore size 32mm Types of port screws Rc M screw cylinder stroke 30 cylinder stroke 30mm body options Standard (rod end female thread) Auto switch mounting groove Z ø12 ø25 2 sides ø32 ø100 4 sides auto switch Without auto switch Auto switch additional symbol 2 with or without Custom made specifications standard 8 Rc cylinder stroke 180 Rod end screw shape rod end male thread Stroke adjustment symbol doesn't exist Cylinder additional symbol no bellows dual stroke mark No dual stroke mark cylinder stroke 2 Cylinder stroke 2 None Cylinder additional symbol 2 Rod end male thread