JIS Standard

Category

material-composition
NOMINAL PIPE SIZE OUTSIDE DIA.(MM) DIA. OF BOLT CIRCLE (MM) DIA. OF HOLES (MM) NUMBER OF HOLES DIA. OF BORE (MM) THICKNESS MIN. (MM) DIA. OF HUB AT SMALL END (MM) DIA. OF HUB AT LARGE END (MM) LENGTH THRU. HUB (MM) CHAMFERING (MM) RADIUS OF FILLET (MM) APPROX. WEIGHT (KG.)
A D C h   do t N M H X R  
3/8" 10 90 65 15 4 - 14 30 32 20 - 4 -
1/2" 15 95 70 15 4 23.4 14 34 36 20 3 4 0.68
3/4" 20 100 75 15 4 28.9 16 40 42 22 3 4 0.84
1" 25 125 90 19 4 35.6 16 48 50 24 3 4 1.33
1.1/4" 32 135 100 19 4 44.3 18 56 60 26 4 5 1.70
1.1/2" 40 140 105 19 4 50.4 18 62 66 26 4 5 1.80
2" 50 155 120 19 8 62.7 18 76 80 26 4 5 2.00
2.1/2" 65 175 140 19 8 78.7 20 100 104 30 5 5 2.89
3" 80 200 160 23 8 91.6 22 113 117 34 5 6 4.04
3.1/2" 90 210 170 23 8 104.1 24 126 130 36 5 6 4.67
4" 100 225 185 23 8 116.9 24 138 142 36 5 6 5.24
5" 125 270 225 25 8 143.0 26 166 170 40 6 6 8.24
6" 150 305 260 25 12 168.4 28 196 202 42 6 6 10.8
7" 200 350 305 25 12 219.5 30 244 252 46 6 6 13.6
8" 250 430 380 27 12 271.7 34 304 312 52 6 6 23.7
9" 300 480 430 27 16 322.8 36 354 364 56 9 8 28.1
10" 350 540 480 33 16 360.2 40 398 408 62 9 8 39.7
12" 400 605 540 33 16 411.2 46 446 456 70 9 10 55.6
14′ 450 675 605 33 20 462.3 48 504 514 78 9 10 73.1
16" 500 730 660 33 20 514.4 50 558 568 84 9 10 86.5
18" 550 795 720 39 20 565.2 52 612 622 90 9 10 104
20" 600 845 770 39 24 616.0 54 666 676 96 9 10 117