Series CHN Head flange style: CHNG oIA oD �ｮI MM Width across flats B1 Air release Air release H1 GA1 W GA2 GB1 NN Rc P Rc P GB2 Rc P Width across flats B2 Cushion valve Cushion valve Cushion valve FY B V T FZ FX 3 GA3 A K H F NA S + Stroke ZZ + Stroke GB3 NB FT H2 Bore size (mm) Stroke range (mm) 25 to 300 25 to 400 25 to 500 25 to 500 Effective thread length (mm) 15.5 19.5 21 21 20 25 32 40 A 18 22 24 24 B1 13 17 22 24 B2 26 32 38 41 D 10 12 16 18 B 38 44 50 60 E 8 10 14 16 F 16 16 19 21 FD 7 7 7 9 FT 6 9 9 9 FX 51 53 55 66 FY 21 27 33 36 FZ 68 70 72 84 GA1 10 10 11 12 GA2 12 12 13 17 GA3 12 12 13 17 GB1 8 8 8 11 GB2 10 10 10 16 (mm) Bore size (mm) 20 25 32 40 K 5 5.5 7.5 7.5 H2 8 8 9 11 I 31 34 40 48 MM M8 x 1.25 M10 x 1.25 M14 x 1.5 M16 x 1.5 NA 17 17 18 22 NB 15 15 15 21 NN M22 x 1.5 M24 x 1.5 M30 x 1.5 M33 x 2 P 1/8 1/8 1/8 1/4 S 81 81 87 108 T 9.5 11 13 16 W 6.5 5.5 4 0 V 4.5 3.5 3 5 ZZ 138 143 159 183 (mm) 23f8 25f8 31f8 34f8 .0.020 .0.053 .0.020 .0.053 .0.025 .0.064 .0.025 .0.064 H1 5 6 8 10 GB3 10 10 10 16 H 41 46 53 54 Dimensions 4 x oFD Width across flats E Effective thread IA 1324