SMC CRBU2 Series Free Installation Rotary Actuator Vane TypeCRBU2S15 180SZ Non Sparking Hammer Specification item model symbol Specification Specification item model symbol Specification information built in magnet No built in magnet installation support B Basic type tube inner diameter 20 tube inner diameter 20mm cylinder stroke 20 cylinder stroke 20mm dual stroke mark No dual stroke mark cylinder stroke 2 Cylinder stroke 2 None option Standard (rod end female thread) auto switch Without auto switch Auto switch additional symbol 2 with or without Custom made specifications standard by half a rotation of the grease gun tube