For reduced dust generation, the Type CKR actuator incorporates a unique sealing mechanism that achieves cleanliness of Class 4 under the ISO 14644-1: 1999, which is equivalent to Class 10 under Fed. Std. 209E (internal suction, under down flow environment). The CKR has externally mounted suction couplings for particle collection. AFE grease is utilized to generate an extremely low level of particles. To resist corrosion, the LM rail and ball screw of the Type CKR are surface treated.