En
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)
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.
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.
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
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)
– Tunneling projects
– Construction sites
– Mining operations
– Quarrying activities
| 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.
