Bulroc Hyper 51 DTH Hammer

Hyper 51 Valveless Hammer - 5" to 6 1/2" diameter holes

The Hyper 51 is a valveless DTH Hammer designed for drilling 5" to 6 1/2" diameter holes over a wide range of operating air pressures. The Hyper 51 is supplied with a 3 1/2" 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 51 Hammer is designed to accept Button Bits with a shank and footvalve identical to the Ingersoll Rand DHD 350R. However, the Hyper 51 can also be supplied to accept the Mission SD5 type of Button Bit.

Technical Specifications

		Component Parts
		Ref.	Description
		1	Backhead
		2	Backhead 'O' Ring
		3	Check Valve
		4	Check Valve Spring
		5	Diverter
		6	Compression Ring
		7	Tube Holder
		8	Tube Buffer (2)
		9	Control Tube
		10	Piston
		11	Piston Retaining Ring
		12	Bit Retainer Rings
		13	Bit Retainer 'O' Ring
		14	Chuck
		15	Chuck Release Washers
		16	Wearsleeve
		Hammer Specifications
		Weight (less bit)	145.2 lbs.
		Length (less bit)	43.94"
		Outside diameter	4.50"
		Piston weight	34.3 lbs.
		Stroke	4.25"
		Air Consumption
		PSI	CFM
		150	189
		200	291
		250	406
		300	534

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