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DTH Hammers

MDS DTH hammers are designed to achieve high penetration rates with long lasting feature and low operational cost. These DTH hammers are manufactured with best quality Alloy Steel, machined to high precision and are heat-treated in the most modern, fully process controlled heat treatment furnace.

Low Pressure (Valve Type)

Model	Bit Sizes	Outside Dia(mm)	Hammer Length (mm)	Weight (Kgs)	Spanner Acoss Flats (mm)	Thread Size (Apireg)	Equivalent Bit shank Type (*)	Operating Pressure [PSI]	Consumption		Normal Lub Dosage Ltrs./Hrs
									At operating Pressure
CHEETA	3" to 4 1/4"	65	800	30	50	2 3/8" API REG BOX THD.(*)	MDS	150 to 250	@150 PSI	180 CFM	1.2 Lts/hr. to 1.5 Lts/hr
									@10.55 Kg/CM²	5.1M³/MIN
									@200 PSI	244 CFM
									@14.0 Kg/CM²	6.9M³/MIN
									@250 PSI	294 CFM
									@17.58 Kg/CM²	8.3 M³/MIN
PANTHER	4 1/2" to 6 1/4"	98	1078	45	75	2 3/8" APIREG BOX THD.(*)	MDS	150 to 250	@150 PSI	190 CFM	1.2 Lts/hr. to 1.5 Lts/hr
									@10.55 Kg/CM²	5.4M³/MIN

									@200 PSI	270 CFM
									@14.0 Kg/CM²	7.7 M³/MIN
									@250 PSI	330 CFM
									@17.58 Kg/CM²	9.3 M³/MIN

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High Pressure (Valve less)

Model	Bit Sizes	Outside Dia(mm)	Hammer Length (mm)	Weight (Kgs)	Spanner Acoss Flats (mm)	Thread Size (Apireg)	Equivalent Bit shank Type (*)	Operating Pressure [PSI]	Consumption		Normal Lub Dosage Ltrs./Hrs.
									At operating Pressure
TIGER -2	6" to 8 1/4"	137	1338	100	90	2 7/8" API IF PIN THD. (*)	SD-6 MDS DHD-360	150 to 350	@150 PSI	350 CFM	2.0 to 2.5
									@10.55 Kg/CM²	9.9 M³/MIN
									@200 PSI	490 CFM
									@14.0 Kg/CM²	13.9 M³/MIN
									@250 PSI	650 CFM
									@17.58 Kg/CM²	18.4 M³/MIN
									@300 PSI	810 CFM
									@21.09 Kg/CM²	23.0 M³/MIN
									@350 PSI	940 CFM
									@ Kg/CM²	26.7 M³/MIN

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Mr. Amit Miharia (Asst Manager - Marketing)
No. 50/ C/ 1 A, K. G. Bose Sarani
Kolkata, West Bengal - 700 085, India
Telephone: +(91)-(33)-23510226/ 26539638

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