Brand：	none
Address：	China
Min.Order：	none
Supply：	none
Valid until：	Long Term
Branch：	Array
Type：	Array
Size：	280X180X90 cm

Product Details

Product Description

YYT28 Hydraulic Rock Drill

The YYT28 is made for general excavations,quarrying and bolting with hexagonal shank rods with a shank size of 108mm(41/2”)*22mm(7/8”).

The YYT28 can use water flushing or air flushing.

YYT28 is a hydraulic rock drill to drill diameter 32mm(1 1/4”) to 50mm(2”) hole.

Powerful drilling
The powerful combination of percussion and rotation originates in a very efficient impact structure .
YYT29 is also equipped with a powerful flushing mechanism which enables efficient removal of cuttings during drill deep holes.

High durability
The external parts have a sturdy design, and the internal parts, subjected to severe working conditions, which are either heat-treated or chromium plated. And all components are precisely finished as well. The drill internal parts all work in the hydraulic oil assures trouble-free and economical operation.

Easy and safe operation
Perfection of balance and convenient portability have been main concern in the design of YYT29.The hydraulic leg patent design makes the drill can be used for long periods due to the minimum recoil. The patent brake-chuck assures the broken rod will not hurt drillman and the drill rig will not fall when the bit shank is broken. YYT29 guarantees dependable and efficient drilling with a minimum of operator fatigue.

Technology Parameters

Specifications
shank	Water	Air	Weight	Length	Piston	Piston Dia	Oil flow
	flushing	flushing	kg	Overall	Stroke	mm	L/ min
				mm	mm
22×108	√	√	26	600	24	30	32-35

Hydraulic	Impact	Impact	Torque	Spin	Drilling	WaterPressure
Pressure	Energy	Frequency	Nm	Speed	Hole dia	Mpa
Mpa	J	J		r/min	mm
15-17.5	55-65	55-60	50-55	250-300	φ32-46	0.1-0.3