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| Place of Origin | CHINA |
| Brand Name | ROSCHEN |
| Certification | ISO |
| Model Number | T38 T45 T51 GT60 |
Rock Drilling Rig T38 T45 T51 GT60 Coupling Sleeves for Mining Rock Drilling Coupling sleeve
Thread R38 T38 T45 T51 Coupling Sleeves for Bench Drilling , High Wear Resistance
Coupling sleeves, other name is Coupling, when using rock drills with male shank adapters and a conventional drifter rod, a coupling is required to join the adapter to the rod, ensuring the ends touch for efficient energy transmission. Couplings are also used to connect several rods to each other in the same way. Couplings have a middle stop to prevent over-threading on to the drill rod. We can manufactures semi-bridge, full bridge coupling sleeves for the percussive tools.
Couplings sleeve are used to well connect the shank adapter to the drill rods or well contact two extensionrods for transmitting energy. It has standard type coupling and crossover coupling.
| Product Name: | Thread coupling sleeve |
| Thread | R25,R28,R32,R38,T38,T45,T51 |
| Diameter | 35mm-77mm (or 1 3/8 inch to 3 inch) |
| Length | 150mm-235mm (or 6 inch to 9 1/4 inch) |
| Material: | High strength alloy steel bar |
| Type | full-bridge, semi-bridge etc. |
| Color | Green, Gold, Black or based on customer requirements. |
| MOQ: | No MOQ required for testing and trial order |
Applications:
1. R25, R28, R32, R38
Used in drifting and tunneling.
2. T38, T45, T51
Used in benching and long hole drilling.
Processing
CNC milling and proprietary heat treatment process
Competitive Advantage
High strength chromium-molybdenum steel with high fatigue strength and excellent wear resistance
Specifications:
| Coupling Sleeve | ||||||
| Length | Diameter | Thread | Weight | Part Number | ||
| mm | inch | mm | inch | kg | ||
| R25 Coupling Sleeve | ||||||
| 150 | 6 | 35 | 1 3/8 | R25 | 0.7 | 4148300429 |
| 155 | 6 1/9 | 44 | 1 3/4 | R25 | 1 | 4148300430 |
| 160 | 6 2/7 | 38 | 1 1/2 | R25 | 1.3 | 4148300431 |
| R28 Coupling Sleeve | ||||||
| 150 | 6 | 40 | 1 4/7 | R28 | 0.9 | 4148300483 |
| 170 | 6 2/3 | 55 | 2 1/6 | R28 | 2 | 4148300484 |
| R32 Coupling Sleeve | ||||||
| 150 | 6 | 44 | 1 3/4 | R32 | 1 | 4148300646 |
| 160 | 6 2/7 | 44 | 1 3/4 | R32 | 1.1 | 4148300647 |
| R38 Coupling Sleeve | ||||||
| 170 | 6 2/3 | 55 | 2 1/6 | R38 | 1.9 | 4148300703 |
| 190 | 7 1/2 | 55 | 2 1/6 | R38 | 2.1 | 4148300704 |
| T38 Coupling Sleeve | ||||||
| 190 | 7 1/2 | 55 | 2 1/6 | T38 | 2.1 | 4148300803 |
| T45 Coupling Sleeve | ||||||
| 210 | 8 1/4 | 63 | 2 1/2 | T45 | 3 | 4148300881 |
| 210 | 8 1/4 | 66 | 2 3/5 | T45 | 3.3 | 4148300882 |
| T51 Coupling Sleeve | ||||||
| 225 | 8 6/7 | 71 | 2 4/5 | T51 | 4.6 | 4148300961 |
| 225 | 8 6/7 | 76 | 3 | T51 | 4.8 | 4148300962 |
| 235 | 9 1/4 | 72 | 2 5/6 | T51 | 4.7 | 4148300963 |
| 235 | 9 1/4 | 77 | 3 | T51 | 4.9 | 4148300964 |
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