SMC's CQS clean room, compact air cylinder has 4 bore sizes. Standard strokes range from 5 to 50mm. 10/11-C(D)QS series, available for clean environment, prevents particle generation in a clean room. 21/22-C(D)QS series offers the same structure as the clean series, and are for the environment in which the use of copper, fluorine and silicon are restricted. The 
(mm) 12 16 20 25 5 to 30 32.2 25.2 6 6 25 M3 x 0.5 32 5 3.5 15.5 3.5 6.5 depth 3.5 10 5 to 30 33 26 8 8 29 M4 x 0.7 38 6 3.5 20 3.5 6.5 depth 3.5 10 10 5 to 50 35 26 7 10 36 M5 x 0.8 47 8 4.5 25.5 5.5 9 depth 7 9.5 10 5 to 50 39 29 12 12 40 M6 x 1.0 52 10 5 28 5.5 9 depth 7 11 10 Note 2) The external dimensions with rubber bumper are same as those of the standard, as shown above.
CQSB20-30D CQSB20-35D CQSB20-40D CQSB20-45D CQSB20-50D CQSB20-75DC CQSB20-100DC CQSB20-125DC CQSB20-150DC CQSB20-175DC CQSB20-200DC CQSB25-5D CQSB20-10D CQSB20-15D CQSB20-20D CQSB20-25D CQSB20-30D CQSB20-35D CQSB20-40D CQSB20-45D CQSB20-50D CQSB20-75DC CQSB20-100DC CQSB20-125DC CQSB20-150DC CQSB20-175DC CQSB20-200DC CQSB20-250DC CQSB20-300DC 50 55 60 65 70 25 30 35 40 45 50 M5 x 50l x 55l
-45D -50D D Non-rotating rod side mounting 10 10 CQSKWB25-5D -10D -15D -20D -25D -30D -35D -40D -45D -50D C' Mounting bolt D' 7 7 Note) When mounting a cylinder with through-hole, be sure to use the attached plain washer.
CQSWB125D 10D 15D 20D 25D 30D CQSWB165D 10D 15D 20D 25D 30D CQSWB205D 10D 15D 20D CQSWB2025D 30D 35D 40D 45D 50D CQSWB255D 10D 15D 20D 25D 30D 35D 40D 45D 50D 6.5 10 6.5 7 10 Note) Appropriate plain washer must be used for through-hole mounting.