JUCON  -  Under-Reaming System
for Φ273.1mm to Φ1,362mm Casings
Model No. of Wings  Wing Gauge Applicable Casing Guide Shank Type
Extended D1(mm). Retracted (mm). Max. O.D. D2(mm). Min. I.D.
D3(mm).
Nominal Size(in.) O.D.
D4(mm)
#240 4 290 238 273.1 254.0 10" 240 SD8, DHD380
#280 4 336 275 318.5 295.3 12" 277 SD10,N100,QL80
#315 4 373 318 355.6 336.6 14" 320 SD12, DHD112, N120
#365 4 425 363 406.4 387.4 16" 365 SD12, DHD112, N120
#410 4 478 412 457.2 435.0 18" 414 SD15
#460 4 530 461 508.0 482.6 20" 463 SD15, SD18, N180
#510 4 580 509 558.8 533.4 22" 511 SD18, N180
#560 4 630 559 609.6 584.2 24" 561 SD18, N180
#600 4 685 600 660.4 631.8 26" 603 N240
#745 4 840 746 812.8 784.8 32" 748 N240
#800 4 886 797 858.0 826.0 34" 799 JT520, N240
#810 4 930 808 900.0 850.0 36" 810 JT700, N240
#1300 6 1422 1300 1362.0 1332.0 54" 1304 JT900
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