Length 210mm T45 Semi-bidge Type Top Hammer Drilling Tools Coupling Sleeve for T45 Extension Drill Rod
There are 3 types of Coupling Sleeve Full Bridge; Semi-Bridge; Cross over adapter
Product Description:
Semi-bridge type coupling sleeve has a small non-threaded bridge in the centre. The drill rod cannot thread past the centre of the couplings, and the smaller diameter rods portions butt together in the centre bridge area of the coupling. Semi-bridge couplings are most suited to high torque machines. Most rope (R) andTrapezoidal (T) threaded couplings are semi-bridged.
Full bridge type coupling sleeve has a great advantage that it positively eliminates the potential for the coupling to creep along the threaded joints. These couplings, are typically used in a Trapezoidal thread, in surface drilling application, have better uncoupling characteristics and tend to maintain tighter joints. Full-bridge couplings have less chance of jamming and are best suited to machines equipped with independent rotation.
Adapter coupling sleeves are used when changing from one thread type, or size, to another and are typically required only in special circumstances.
Semi-Bridge Type Coupling Sleeve <span font-size:14px;"="" style="box-sizing: border-box; margin: 0px; padding: 0px; overflow-wrap: break-word;">is a most use for Coupling Sleeves in market, product features as follow:
• Small non-threaded bridge in the center
• Steel cannot thread past bridge area
• Smaller diameter steel end portions fit together in the center bridge area of the coupling
• Semi-bridged couplings are most suited to high torque machines
Products Parameters:
| Product Name | Coupling Sleeves |
| Description | Couplings sleeve are used to connect several rods to each other |
| Material | Alloy steel bar |
| MOQ | 10 pieces |
| Type | Full-bridge, semi-bridge, same diameter etc. |
| Thread type | R22,R25,R28,R32,R38,T38,T45,T51 |
| Diameter | 33mm-76mm |
| Length | 140mm-250mm |
| Color | Gold, Black or Customize |
Packaging:
Specification of other Couplings:
| | Length | Dia.(mm) | Thread | Weight
(Kg) |
| mm | in |
| Coupling sleeves | 210 | 8 1/4 | 63 | T45 | 3.0 |
| 210 | 8 1/4 | 66 | | 3.3 |
| 210 | 8 1/4 | 68 | | 3.6 |
| 210 | 8 1/4 | 66 | | 3.3 |
| Coupling sleeves of different diameters | 190 | 7 1/2 | 63 | R32-T45 | 3.2 |
| 190 | 7 1/2 | 63 | T38-T45 | 2.9 |
| 210 | 8 1/4 | 63 | T38-T45 | 2.8 |
Special specification may be available upon request.
Company Information:
The MIROC® Rock Drilling Tools product line by KSQ Technologies (Beijing) Co.Ltd. is the result of years of advanced engineering, precision manufacturing, and dedication to the use of high-quality materials.
MIROC® Rock Drilling Tools are used by many drilling professionals related to mining, construction, tunneling, and quarrying projects around the globe.
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Semi - Bidge Type Top Hammer Drilling Tools Length 210mm T45 63-66 Mm Diameter Images
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