JIS Standard Belt upana wa aina ya mwelekeo φd L1 M m HNBT β = 20 ° β = 30 ° β = 35 ° β = 45 ° BHBHBHBH 400 CRS -400 89.1 145 640 690 125 140 190 6 465 223 450 CRS-450 165 690 740 522 230 481 256 - - - - 500 CRS-500 180 740 790 565 235 522 264 - - - - 600 CRS-600002 6 10 14 52 261 604 294 - - - - L60xt6 650 CRS-650 225 890 940 695 266 640 302 - - - - 600 CRS-600-2 114.3 210 840 890 150 643 282 35 6 6 5 9 CRS