Accessories

Drill Rods and Extension Equipments

Integral Drill Steel Series
Integral Drill Steels are normally produced from 19mm (3/4" ), 22mm ( 7/8") or 25mm (1") Hexagon Drill Steel, where the dimensions given are measured across the flat of the hexagon.

Integral Drill Steels are a fixed length with a shank at one end and a bit at the other, and are able to drill to a depth equivalent to their effective length. The bit may consist of a single chisel shaped tungsten carbide insert or three such inserts.

To drill deep holes, the rods are designed to be used in a series where the length of any rod used is longer than the one used just before it. To do this, a series of rods must be produced so that the bit diameter is reduced for each increase in length of rod to prevent jamming of the bit in the hole.

 

 

 

 

 

7/8" Drill Steels

Series 1

Effective Length
(mm)

Bit Dia
(mm)

Order
Code

800

34

834

1600

33

1633

2400

32

2432

3200

31

3231

4000

30

4030

4800

29

4829

5600

28

5628

6400

27

6427

Series 2

Effective Length
(mm)

Bit Dia
(mm)

Order
Code

800

40

840

1600

39

1639

2400

38

2438

3200

37

3237

4000

36

4036

4800

35

4835

5600

34

5634

6400

33

6433

Series 3

Effective Length
(mm)

Bit Dia
(mm)

Order
Code

400

34

434

800

33

833

1200

32

1232

1600

31

1631

2000

30

2030

Series 4

Effective Length
(mm)

Bit Dia
(mm)

Order
Code

600

35

635

1200

34

1234

1800

33

1833

2400

32

2432

 

 

 

Series 5

Effective Length
(mm)

Bit Dia
(mm)

Order
Code

600

41

641

1200

40

1240

1800

39

1839

2400

38

2438

 

 

 

Series 6

Effective Length
(mm)

Bit Dia
(mm)

Order
Code

800

36

836

1600

35

1635

2400

34

2439

3200

33

3233

4000

32

4032