Specifications

HF-44 Core Sampling Drilling
1.hydraulic
2.strong torque
3.with BQ,NQ,HQ,PQ drill tools
4.high drilling efficiency

HF-44 Core Sampling Drilling 

I.  General

HF-44  Core  Drill,  a  new  type  of  product  with enhanced  capacity,  is  a  kind  of  hydraulic-driven, spindle, diamond-bit, small-diameter core drill with fairly powerful  drilling  force. It is mainly  suitable for exploration  of metal or non-metal solid mineral ore  bed.  It  is  widely  applied  in  core  drill  with diamond  bit  or  hard  tungsten-carbide-tipped   bit and diamond bit in the field of geology, metallurgy, coal mine, hydrological  and engineering  drilling. It can  also  be  used  in  the  fields  of  superficial-zone

petroleum  and  natural  gas  mining,  mine  workings  ventilation  and  water  discharge  tunnel  drilling  as  well  as foundation  pile  construction  in  large  diameter.  It  is  in  reasonable  structure,  light  weight,  powerful  capacity, multiuse, steady performance, high responsibility and high standardization and generalization.

1)   Core Drilling 

Drill Rod Varieties		Drill Rod Type	Drill Depth
Drill Rod Made in China	Planer in and out	dia43×6mm(1.69×0.24  inch)	1400 m (4592feet)
		dia54×6 mm(2.13×0.24 inch)	1000 m (3280feet)
		dia67×6 mm(2.64×0.24 inch)	830 m (2722feet)
	Thickened Inner	dia50×5.5 mm(1.97×0.22 inch)	1300 m (4264feet)
		dia60×6 mm(2.36×0.24 inch)	950 m (3116feet)
	Extracting Core with   Wire Line	dia55.5×4.73mm(2.19×0.19inch)	1400 m (4592feet)
		dia71×5 mm(2.80×0.20 inch)	1000 m (3280feet)
		dia89×5 mm(3.50×0.20 inch)	800 m (2624feet)
DCDMA (Diamond Core Drill Manufacturer Association)  made  Drill Rod	Thickened Inner	BW	1250 m (4100feet)
		NW	1000 m (3280feet)
		HW	660 m (2165feet)
	Extracting Core with Wire Line	BQ	1400 m (4592feet)
		NQ	1100 m (3608feet)
		HQ	750 m (2460feet)

2. Drilling Angel ~0 to 360°

3. Power Engine
Electromotor	Y225S~4	37KW(49.62HP)	1480 r/min
Diesel engine	Deutz F6L 912	82KW(110HP)	1500 r/min

4. Rotator Type: Feeding with double oil cylinders hydraulic pressure, rotating mechanically. Spindle I.D~93   mm (3.66 inch)

Speed of spindle

Speed of Power eng. (r/min)	1480 (for core drilling)
Positive Low Speed (r/min)	83, 152, 217, 316
Positive High Speed (r/min)	254, 468, 667, 970
Negative Speed (r/min)	67, 206

Max. torque of spindle~3.2  KN·m (2358 lbf·ft)

Spindle stroke~600   mm (23.62 inch)

Max. lifting force of spindle ~120  KN (26976 lbf)

Max. thrust of spindle~90   KN (20232 lbf)

5. Hoist Form :planetary gearing

Wire rope dia~17.5 mm(0.69 inch) or 18.5 mm(0.73 inch)

Drum capacity for rope(170 kg/mm2  equivalent to 241839 lb/inch2) ~ (17.5mm steel wire rope)    110m(360.8 feet)

(18.5mm steel wire rope)     90m(295.2 feet) Max. lifting force (single rope)~45 KN (10116 lbf)

Lifting speed of the wire rope

Power eng speed 1000r/min 0.47; 0.86; 1.22; 1.78 m/s (1.54; 2.82; 4.00; 5.84 feet/s) Power eng speed 1500r/min     0.70; 1.29; 1.84; 2.68 m/s (2.30; 4.23; 5.90; 8.79 feet/s) Power eng speed 1700r/min       0.805; 1.485; 2.12; 3.08 m/s (2.64; 4.87; 6.95; 10.10 feet/s) 

6. Clutch Form: Dry single chip friction clutch

7. Gearbox Form: sliding gearbox (4 speeds are positive and 1 is negative).

8. Oil Pump Form: Single Gear Pump

Displacement ~32+12  L/min (8.5+3.2 US Gallons/min)

Working pressure~0 to 8  MPa (0~1160 psi)

Max. pressure~12  MPa (1740 psi)

9. Water Brake

Working speed (r/min) ~700-800

Single rope compensational speed~3--8  m/s (9.84--26.2 feet/s)

Single rope compensational load~45  KN (10116 lbf)