Large diameter DTH Hammers & Bits
 
- Hammers to be made upon customer's demand
 
- We make big size hammers and bits to meet job site demands case by case. So please feel free to contact us to make your hammers and bits to know more of our products.
 

Large Diameter DTH Hammers & Bits

HAMMER SIZE

HI-TOP MODEL

HAMMER O/D

LENGTH

WEIGHT

RECMMENDED BIT SIZE (O/D)

BIT SHANK TYPE

CONNECTION

24”

HT-520

520mm

20.47”

2,321mm

91.37”

3,016kg

6,632lb

610~830mm

15 1/2~32 3/4”

K520, N240

API 8 5/8 Reg Pin

or 240 HEX Joint

26”

HT-550”

550mm

20.47”

2,200mm

91.37”

3,216kg

6,632lb

610~830mm

15 1/2~32 3/4”

HT-550

API 8 5/8 Reg Pin

or 240 HEX Joint

32”

       HT-640

640mm

25.19”

1,839mm

72.40”

3,570kg

7,854lb

775~975mm

30 1/2~38 2/5”

HT-640

 

240 HEX Joint or

300 HEX Joint

42”

       HT-800

800mm

31.49”

1,900mm

74.80”

5,540kg

12,188lb

975~1,200mm

38 2/5~47 1/5”

HT-820

 

300 HEX Join
 
The performance of these big size hammers and bits were proved in Korea, Japan, Hong Kong and Singaopre jobsites.   
If you want to see the working jobsites, you are welcome to contact us.
 
Drilling Speed Per Hour (For Reference Only)
- Condition : Rock Strength : 1200-1400kg/CM²
- Compressor : 350PSI/900CFM Compressors are used.
 

HAMMER SIZE

BIT SIZE

USED COMP. NO.

DRILLING SPEED / HOUR

HT-520

775MM

3

3-4

HT-550

775MM

3

4

HT640

775MM

3

4.5

975MM

4

3

HT800

975MM

4

4

1175MM

5

5
Bit Shank Connection Joint : Customer's Demand
#160, GAEGOK-RI, WOLGOT-MEON, KIMPO-SI, GYEONGGI-DO, THE REPUBLIC OF KOREA
TEL : 82 70 7116 6012    FAX : 82 70 7016 1673   E-MAIL : esonkorea@gmail.com