SMC's NCY3B cylinder series, when compared to the NCY2B, reduces minimum operating pressure by approximately 30% using a lubretainer.  Unnecessary body weight has been eliminated and the outer cylinder tube diameter has been reduced, making the NCY3B approximately 10% lighter. Mounting dimensions are identical to the NCY2B with the exception of the 1/4" bore, allowing easy replacement.  It is possible to order the 1/4" bore (NCY3B6) that is interchangeable with the NCY2B6 by adding the suffix X1468 to the end of the part number.