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Drill Rod Coupling Sleeve

Drill Rod Coupling Sleeve

Thread type: R25, R32, R35, R38, T38, T45, T51

Diameter: 35mm, 40mm, 45mm, 55mm, 63mm, 66mm, 72mm, 76mm

Length: 150mm, 155mm, 170mm, 180mm , 180mm, 190mm, 210mm , 235mm

Coupling Type: Standard Couplings (Semi bridge Couplings),Full bridge Couplings,Crossover Couplings (Adapter Couplings, Reduction Couplings, Reducer Coupling)

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Product Details
Parameters
Product Details

Drill Rod Coupling Sleeve Technical Specifications

Drill rod coupling sleeves are tubular drilling components with internal threading designed for secure connections between shank adapters and drill rods, or between drill rods. Our product range includes three specialized types to accommodate diverse drilling requirements.

Drill Rod Coupling Sleeve

1. Standard Coupling Sleeve (Semi-Bridge Type)

Featuring a non-threaded bridge section at mid-body, this design prevents over-insertion of drill rod threads. The thread termination tightly interfaces with the sleeve’s bridge zone, making it ideal for high-torque drilling rigs. As the most widely adopted solution, it primarily serves R-thread (rope thread) and T-thread (trapezoidal thread) systems.
Drill Rod Coupling Sleeve

2. Full-Bridge Coupling Sleeve

Incorporating continuous threading architecture, this variant eliminates connection loosening risks. Particularly effective in surface mining operations, it offers:
– Enhanced disassembly efficiency
– Superior connection rigidity
– Anti-jamming performance
Drill Rod Coupling Sleeve

3. Crossover Coupling Sleeves

Engineered for reliable transitions between different threading systems or dimensional specifications:
– Thread type conversion (e.g., R-thread to T-thread)
– Diameter adaptation (e.g., 38mm to 42mm)
Drill Rod Coupling Sleeve

ApplicationsEssential for blast hole drilling operations in:

– Tunneling projects
– Construction sites
– Mining operations
– Quarrying activities
Drill Rod Coupling Sleeve

Parameters
Coupling Sleeve
Thread Diameter Length
mm inch mm inch
R25 35 1 19/50 150 5 9/10
R28 40 1 29/50 155 6 1/10
R32 45 1 3/4 170 6 57/64
R38 55 2 5/32 170 6 57/64
T38 55 2 5/32 190 7 33/64
T45 63 2 15/32 210 8 17/64
T45 66 2 19/32 210 8 17/64
T51 72 2 7/8 235 9 1/4
T51 76 3 235 9 1/4
Adapter Coupling / Crossover Coupling
Thread Diameter Length
A B mm inch mm inch
R25 R32 45 1 3/4 170 6 57/64
R28 R32 45 1 3/4 170 6 57/64
R32 R38 55 2 5/32 180 7 1/8
R32 T38 55 2 5/32 180 7 1/8
R38 T38 55 2 5/32 190 7 33/64

Notice: There is a chance that SHANDIKE may make changes on above-mentioned information. Product pictures and parameters about models, data, performances and specifications on this website are for reference only.

SHANDIKE
Jianxi District, Luoyang, China
+8619937978951
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