Interlocking Kelly Bar for ZOOMLION ZR220

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Technical Parameter of Kellyway Inter-Locking Kelly Bars

Diameter (MM)	Elements	Length (M)	Torque (KN·M)	Max Drilling Depth(M)
355	3&4	8-12	180	42
377/368	3&4	8-13	220	46
406/394	3&4	8-14	230	50
419/426	3&4	8-15	250	54
440/445	3&4	8-15	259	54
470	3&4	8-17	280	62
508	3&4	10-17	320	62
530	3&4	10-20	380	71
575	3&4	10-21	420	75
630	3&4	10-21	460	75
All specifications can be tailored as per customers’ special requirements.