DTH hammer

4 inch Numa DTH hammers

Hammer Size: 3.5” to33”
Product description: 4 inch Numa DTH hammers has a policy of continuous improvement of DTH technology and engineering, which is achieved through a proactive research and development program. Their performance driven Patr
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Numa 4" Hammer Series

Hammer	Patriot 40	Patriot 40HD	Champion 40
Bit Shank	340A	340A	340A
Recommended Bit Size (inches)	41⁄4 - 51⁄8"	41⁄4 - 51⁄8"	41⁄4 - 51⁄8"
Outside Diameter (inches)	33⁄4"	37⁄8"	33⁄4"
Hammer Weight (pounds)	78	89	80
Hammer Length Shoulder to Shoulder (inches)	39 1⁄4"	39 1⁄4"	35 3⁄4"
Backhead Connection	2 3⁄8 API Reg Pin	2 3⁄8 API Reg Pin	2 3⁄8 API Reg Pin
Blows/Min @ psi	1960 @ 350	1960 @ 350	1850 @ 350

Numa DTH Hammer has a policy of continuous improvement of DTH technology and engineering, which is achieved through a proactive research and development program. Their performance driven Patriot, Champion, and Challenger hammer models offer one of the largest ranges of hammers available in the industry, capable of drilling holes from 3 1/2" to 43" in diameter.