Ⅰ. General 
XY**4A  Core 
Drill,  a 
new 
XY**4A CORE DRILLING RIG 
type  of  product  with 
enhanced 
capa city,  is  a 
kind 
of  hydraulic-driven, 

spindle,  diamond-bit,  small-diameter  core  drill  with 
fairly  powerful  drilling  force.  It  is  mainly s uitable for 
exploration of metal or non-metal s olid mineral ore bed. 
It  is  widely  a pplied  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 ventilati on and water discharge 
tunnel  drilling  a s  well  as  founda tion  pile  construction 
in large diameter. It is in reasonable structure, light weight, powerful capacity, multiuse, steady performance, high 
responsibility and high standardization and generalization. 


Ⅱ. Main Features of XY**4A drill 
1.    There are  more  speed  grade (8  grades),  reasonable speed range  and  high  torque  while low speed.  Max. 
torque  is  up  to  ***0  N·m  (***8  lbf·ft).  The  drill  is  adapted  on  core  drilling  with  tungalloy-carbid-tipped  
and diamond oil as well a s engineering geology exploration, hydrology well drilling and basic pile engineering. 
2.    With  large  spindle  I.D.  *3mm(3.*6  inch),  the  drill  is  fed  with  double  hydraulic  cylinders  with  much longer stroke up to **0mm(*3 .*2 inch). With strong  technological adaptability,  the rig  can be a dapted  on  many field, especially on large  diameter drill rod drilling, (upper part coring) extracting core with wire line.  Thus  it is more effective in i mproving dri lling effici ency with less faulty in hole. 
3.    With powerful drilling capacity, the rated drilling depth comes up to 1,**0m(3 9.*7 inch) with *1mm(2.*0 
inch) wire-line coring drill rod. 
4.    Light in  weight, and  in fine dismountability, the  rig can be dismantled  into  ten parts easily, the  biggest 
apparatus  is  in  **0  kg   (**1.5   lb).  The  whole  drill  is  in  ***0kg(*7 *1  lb),  it  can  be  moved  easily  especially  
in mountain area. 

5.    Clamped with belleville spring  and loosened with hydraulic cylinder, the hydraulic chuck is ado pted with 
three-jaws self centering. It is in strong and steady clamping force. 
6.    Equipped with a water brake for steady a nd smooth deep hole drilling . 
7.    Supplying oil with a simplex gear pump, it is easy for installation  and  operation; lower in energy consumption and in low oil temperature of hydraulic system; the rig is for sure in steady drilling.  The hand-operated oil pump can be put in use to hoist the drilling tools in hole upon the power engine failing to operate. 
8.    With compact structure and  reasonable layout,  with  all components exposed, and  with  non overlapped ones, it is convenient for maintenance. 
9.    With low  center of  gravity  and long travelling distance  up  to **0mm(*8.1  inch), the  rig is reliable  and 
stable in high speed drilling. 
*0.   It is easy to get to know the conditions in hole with an antivibration  meter. Less in operating handles, the 
rig can be operated credibly and flexibly. 


Ⅲ. Specifications
1.   Drill Capacity 
1)   Core Drilling 
 

Thickened Inner 


Extracting Core with 


Manufacturer 


Extracting Core with 

2) 
 
Hydrogeology Well Drilling



Drill Rod Type    Drilling Hole Dia.    Drilling Depth
6 0mm(2.*6  inch)
(Thickened outer)    **0 mm (7.*7 inch)    **0 m (***4 feet)
7 3mm(2.*7  inch)
(Thickened outer)    **0 mm (*3.*8 inch)    **0 m (***0 feet)
*9mm(3.5 inch)
(Thickened outer)    **0 mm (*9.*9 inch)    **0 m (**4 feet)




3) 
Foundation Pile Drilling 


Drilling hole dia. with *9 mm(3.*0 inch) outer thickened drill rod. 
Loose formation ***********************************************0 mm (*9.*7 inch) 
Hard formation   ********************************************0 mm (*3.*2 inch) 
Drilling Depth   **********************************************0 m (**8 feet) 
2. Drilling Angel ************************************************0°﹣3 *0° 
3. Power Engine 
Electromotor       Y**5S*4                    *7KW(*9.*2HP)     ***0  r/min 
Diesel engine       YC4E *****1         **0KW(**0HP)     ***0 r/min 


4. Rotator 


Type: Feeding with double oil cylinders hydraulic pressure, rotating mechanically. 
Spindle I.D****3 mm (3.*6 inch) 
Speed of spindle: 



Speed of Power eng. (r/min)    ***0 (for core drilling)
Positive Low Speed (r/min)    *3, **2, **7, **6
Positive High Speed (r/min)    **4, **8, **7, **0
Negative Speed (r/min)    *7, **6



Max. Torque of spindle *****************************************3.2 KN·m (***8 lbf·ft) 
Spindle stroke******************************************************0 mm (*3.*2 inch) 
Max. lifting force of spindle   **********************************0 KN (****6 lbf) 
Max. thrust of spindle********************************************0 KN (****2 lbf) 
5. Hoist 
Form planetary gearing 
Wire rope dia. ********7.5 mm(0.*9 inch) or *8.5 mm(0 .*3 inch) 
Drum capacity for rope(**0 kg/mm  equivalent to ***8 *9 lb/inch ) ******- 
(*7.5mm steel wire rope)  **0m(**0.8 feet) 
(*8.5mm steel wire rope)   *0m(2 *5.2 feet) 
Max. lifting force (single rope) *****************5 KN (****6 lbf) 
Lifting speed of the wire rope 
Power eng speed ***0r/min       0.*7; 0.*6; 1.*2; 1.*8  m/s (1.*4; 2.*2; 4.*0; 5.*4 feet/s) 
Power eng speed ***0r/min       0.*0; 1.*9; 1.*4; 2.*8  m/s (2.*0; 4.*3; 5.*0; 8.*9 feet/s)
Power eng speed ***0r/min       0.**5; 1.**5; 2.1 2; 3.*8 m/s (2.*4; 4.*7; 6.*5; *0.*0 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 *************************************2**2 L/min (8.5 *3.2 US Gallons/min) 
Working pressure *******************************0—8 MPa (*****0 psi) 
Max. pressure *************************************2 MPa (***0 psi) 
9. Water Brake 
Working speed (r/min) *************************************0—**0 
Single rope compensational speed**********************3—8 m/s (9.****6.2 feet/s)
Single rope compensational load************************5 KN (****6 lbf) 
*0. Drill Frame 
Form sliding skids type (with sliding base) 
Drill backward stroke *******************************0 mm (*8.*1 inch) 
*1. Dimensions (L×W×H) ********************************0×***0×***0 mm (**9.3×*3.3×*4.4 inch) 
*2. Weight of drill (without power unit) ***************-about ***0 kg(***1 lb) 
*3. Max. weight of dischargeable apparatus *************0 kg (6 *2 lb)