Coupling Sleeves
Both semi-bridge and full-bridge coupling sleeves are manufactured by SINODRILLS
SINODRILLS Coupling Sleeves
Coupling is used for connecting shank adapter and extension drill rod together, or for connecting two extension rods together. Besides normal equal couplings, we also offer reducing couplings that are able for changing thread type and size. The couplings we offer can be applied for our top hammer drilling system, suitable for drilling duties in tunneling, construction, mining, quarrying, etc.
Parameters
• Thread type: R25, R28, R32, R38, T38, T45, T51
• Diameter: 35mm, 40mm, 45mm, 55mm, 63mm, 66mm, 72mm, 76mm
• Length: 150mm, 155mm, 170mm, 180mm , 180mm, 190mm, 210mm , 235mm
• Coupling type: Semi-bridge, Full bridge, Adapter Coupling
Features
• Premium steel as material, precision CNC for manufacturing, accuracy and reliability assured;
• High transmission efficiency grants high drilling efficiency for the drilling system.
Applications
Drilling works for blasting duties in tunneling, construction, mining, quarrying, etc.
Coupling Sleeve
Thread
mm
R25
R28
R32
R38
T38
T45
T45
T51
T51
Adapter Coupling / Crossover Coupling
Thread
A
R25
R28
R32
R32
R38
Diameter
Length
inch
mm
inch
35
1 19/50
150
5 9/10
40
1 29/50
155
6 1/10
45
1 3/4
170
6 57/64
55
2 5/32
170
6 57/64
55
2 5/32
190
7 33/64
63
2 15/32
210
8 17/64
66
2 19/32
210
8 17/64
72
2 7/8
235
9 1/4
76
3
235
9 1/4
Diameter
Length
B
mm
inch
mm
inch
R32
45
1 3/4
170
6 57/64
R32
45
1 3/4
170
6 57/64
R38
55
2 5/32
180
7 1/8
T38
55
2 5/32
180
7 1/8
T38
55
2 5/32
190
7 33/64
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