Bulroc Hyper 31 DTH Hammer

Hyper 31 Valveless Hammer - 3 1/2" to 4" diameter holes

The Hyper 31 is a valveless DTH Hammer designed for drilling 3 1/2" to 4" diameter holes over a wide range of operating air pressures. The Hyper 31 is supplied with a 2 3/8" API regular pin backhead as standard, but other connections are available on request. A positive fitting water check valve guards against ingress of ground water when the air is shut off.

The Hyper 31 accepts as standard the Mach 33 Button Bit, although bits with Mission A3015, Sandvik XL3, and Ingersoll Rand 3.5 shanks can also be used by simply making a few minor component changes. Alternatively, the Hyper 31 can be supplied initially to suit any of these bits.

Technical Specifications

		Component Parts
		Ref.	Description
		1	Backhead
		2	Backhead 'O' Ring
		3	Check Valve
		4	Check Valve Spring
		5	Diverter
		6	Compression Buffer
		7	Tube Holder
		8	Tube Buffers (2)
		9	Control Tube
		10	Piston
		11	Piston Retaining Ring
		12	Bit Retainer Ring
		13	Bit Retainer 'O' Ring
		14	Chuck
		15	Chuck Release Washer
		16	Wearsleeve
		Hammer Specifications
		Weight (less bit)	52.8 lbs.
		Length (less bit)	34.56"
		Outside diameter	3.12"
		Piston weight	11.0 lbs.
		Air Consumption
		PSI	CFM
		150	96
		200	148
		250	206
		300	271

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