sales@superdrill.com.cn

Extension Rod

  • Extension Drill Rod - 副本
  • Extension Drill Rod - 副本
  • Extension Drill Rod - 副本
Extension Drill Rod - 副本Extension Drill Rod - 副本Extension Drill Rod - 副本

Extension Drill Rod - 副本

  • Thread: R22, R25, R28, R32, R35, R38, T38, T45, T51;
  • Effective lengths:600mm ~ 6400mm;
  • Type:Thread extention Rod and MF rod
  • Body Type:Round shape and hexagonal type
  • Product description: Super drifting and extension drill rods are for in drifting, tunneling, long-hole drilling, bench and production drilling industries. These rods are produced with round or hexagonal sections in all co
  • INQUIRY Email Whatsapp

Extension Drill Rod

Extension rods are one major spare part in terms of drill application area, there are two shapes of extension rods, one is round type, another one is hexagonal type.

But all extension rods are threaded and made by hollow drill steels, this means usually extension rods are hollow.This hollow hole are usually named flushing hole, used for transmitting water or air during drilling. Two ends threads can be used for connecting couplings, shanks, couplings or bits. Typically two ends of extension rods are male, while sometime one end is male and another one is female, then we call it M/F rod. We need couplings to connect extension rods, while for M/F rods, because one end is female, so couplings are not necessary.
Specifications:
Thread sizes: R22, R25, R28, R32, R35, R38, T38, T45, T51;

Rods diameter: round 32mm, round 39mm, round 46mm, round 52mm, Hex.22mm, Hex.25mm, Hex.28mm, Hex. 32mm, Hex. 35mm;
Effective lengths:600mm ~ 6400mm;

Extension Drill Rod

Rods Dimension

Length

Driven Thread

Suitable Bits Thread

Drilling Hole Range

M-M

M-F

mm

foot

mm

foot

mm

inch

Hex.25

915 ~ 3700

3 ~ 12

610 ~ 1220

2 ~ 4

R25, R28, R32

R25

33 ~ 51

1 19/64 ~ 2

Hex.28

2100 ~ 4920

6 3/4 ~ 16

1220 ~ 3050

4 ~ 10

R28, R32, R38

R28

37 ~ 51

1 29/64 ~ 2

Hex.32

2400 ~ 5530

7 7/8 ~ 18

R28, R32, R38, T38

R32

40 ~ 64

1 37/64 ~ 2 1/2

Round32

915 ~ 4310

3 ~ 14

915 ~ 4270

3 ~ 14

R32, R38, T38

R32

45 ~ 64

1 3/4 ~ 2 1/2

Hex.35

2670 ~ 6100

8 5/8 ~ 20

3700 ~ 6400

12 ~ 21

R32, R38, T38

R32

45 ~ 76

1 3/4 ~ 3

Round38

610 ~ 6095

2 ~ 20

610 ~ 6095

2 ~ 20

R38, T38, T45

T38, T45

57 ~ 89

2 1/4 ~ 3 1/2

Round45

1830 ~ 6095

6 ~ 20

1525 ~ 6095

5 ~ 20

T38, T45, T51

T45, T51

70 ~ 102

2 3/4 ~ 4

Round51

3050 ~ 6095

10 ~ 20

1525 ~ 6095

5 ~ 20

T45, T51

T45, T51

76 ~ 127

3 ~ 5

Extension Drill Rod

Extension Drill Rod

Extension Drill Rod