Bulroc Hyper 181 DTH Hammer

Hyper 181 Valveless Hammer - 18" to 24" diameter holes

The Bulroc Hyper 181 hammer is a valveless DTH hammer designed to operate efficiently at pressures ranging from 100 to 225 psi. The Hyper 181 is supplied with a 8 5/8" API regular pin backhead as standard, but an 8 5/8" API regular box backhead can be supplied.

In addition to the standard Hyper 181 Button Bits the Hyper 181 can easily be modified to accept bits with Mission SD18 shank design by simply replacing the chuck, piston, and bit retainers.

Technical Specifications

		Component Parts
		Ref.	Description
		1	Backhead 8 5/8" Regular Pin
		2	Backhead 'O' Ring
		3	Check Valve
		4	Check Valve Spring
		5	Valve Chest
		6	Compression Buffer
		7	Buffer Cover
		8	Tube Holder
		9	Tube Buffers (2)
		10	Tube 'O' Ring
		11	Control Tube
		12	Piston
		13	Wearsleeve
		14	Bit Retaining Ring
		15	Chuck
		16	Chuck Bearing
		17	Breakout Washers (2)
		Hammer Specifications
		Weight (less bit)	3545 lbs.
		Length (less bit)	86"
		Outside diameter	16"
		Bore diameter	12.25"
		Piston weight	730 lbs.
		Stroke	5.75"
		Air Consumption
		PSI	CFM
		100	1097
		150	2016
		175	2541
		200	3105
		225	3705

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