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T45 210mm Mining Threaded Drill Rod Coupling Sleeve Adapter
Semi-bridge coupling, by far is the most popular, 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) and Trapezoidal (T) threaded couplings are semi-bridged.
Full bridge coupling 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 couplings are used when changing from one thread type, or
size, to another and are typically required only in special
circumstances.
Product name | T45 Coupling Sleeve |
Connect type | Threaded |
Thread type | T45 |
Face type | Flat/Drop center/Concave/Convex/Kavex |
Body type | Round/Retrac/Hex |
Button type | Dome/Semi-spherical/Ballistic/Conical |
Length | 210mm |
Diameter | 63mm |
Weight | 3-3.3KG |