Locking – CLS

C(D)LS, Locking Cylinder, Double Acting, Single Rod, Auto-switch Capable

C(D)LS, Locking Cylinder, Double Acting, Single Rod, Auto-switch Capable

The CLS series cylinder with lock is ideal for applications requiring intermediate and emergency stop and drop prevention. The compact lock unit is lightweight and saves space. A switch is optional on the brake cylinder so the operating state of the lock unit (brake piston) can be detected using the switch signal. By separating the lock mechanism and the brake cylinder, SMC has minimized the influences of unlocking air quality such as moisture and condensation.

  • Fail safe construction
  • Equal holding force in both directions
  • Lock unit switch
  • Improved maintainability
  • Strokes to 1600 depending upon mounting brackets
  • Auto switch capable cylinder
  • Auto switch capable brake unit

CLS, Accessory, Mounting Brackets

CLS, Accessory, Mounting Brackets

The CLS series cylinder with lock is ideal for applications requiring intermediate and emergency stop and drop prevention. The compact lock unit is lightweight and saves space. A switch is optional on the brake cylinder so the operating state of the lock unit (brake piston) can be detected using the switch signal. By separating the lock mechanism and the brake cylinder, SMC has minimized the influences of unlocking air quality such as moisture and condensation.


  • Mounting brackets
  • Bore sizes: 125~250mm
  • Type: flange, foot, single & double clevis

CLS, Accessory, Knuckle Joints

CLS, Accessory, Knuckle Joints

The CLS series cylinder with lock is ideal for applications requiring intermediate and emergency stop and drop prevention. The compact lock unit is lightweight and saves space. A switch is optional on the brake cylinder so the operating state of the lock unit (brake piston) can be detected using the switch signal. By separating the lock mechanism and the brake cylinder, SMC has minimized the influences of unlocking air quality such as moisture and condensation.

  • Single and double knuckle joints
  • Applicable to 125mm, 140mm, 160mm, 180mm, 200mm and 250mm bore sizes

CLS, Accessory, Rod End Nut

CLS, Accessory, Rod End Nut

The CLS series cylinder with lock is ideal for applications requiring intermediate and emergency stop and drop prevention. The compact lock unit is lightweight and saves space. A switch is optional on the brake cylinder so the operating state of the lock unit (brake piston) can be detected using the switch signal. By separating the lock mechanism and the brake cylinder, SMC has minimized the influences of unlocking air quality such as moisture and condensation.

  • Rod end nuts
  • Applicable to 125mm, 140mm, 160mm, 180mm, 200mm, and 250mm bore sizes

CLS, Accessory, Clevis Pin/Knuckle Pin

CLS, Accessory, Clevis Pin/Knuckle Pin

The CLS series cylinder with lock is ideal for applications requiring intermediate and emergency stop and drop prevention. The compact lock unit is lightweight and saves space. A switch is optional on the brake cylinder so the operating state of the lock unit (brake piston) can be detected using the switch signal. By separating the lock mechanism and the brake cylinder, SMC has minimized the influences of unlocking air quality such as moisture and condensation.

  • Clevis pin/knuckle pin
  • Applicable to 125mm, 140mm, 160mm, 180mm, 200mm and 250mm bore sizes