|
Coupling Sleeves:
Sai Deepa Rock Drills (pvt) ltd over the years developed Extension equipment of different sizes SDRD offers a variety of tools which are used in the surface mining .The items offered by SDRD includes shank adapters, coupling sleeve, extension rod &threaded cross bit or button bit. Our extension drilling system offers several rod, coupling &shank adapter designs and specifications as required by drilling industry.
COUPLING SLEEVES
|
S.NO
|
Type of Threading
|
Diameter
(All in mm)
|
Length L
In mm
|
|
1
|
R22
|
40 mm
|
140 mm
|
|
2
|
R25
|
40 mm
|
140 mm
|
|
3
|
R28
|
40 mm
|
150 mm
|
|
4
|
R32
|
40 mm
|
150 mm
|
|
5
|
R38
|
55 mm
|
170 mm
|
|
6
|
T38
|
55 mm
|
190 mm
|
|
7
|
T45
|
63/66 mm
|
210 mm
|
|
8
|
T51
|
72/76 mm
|
225 mm
|
|
