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TND-2.5N DTH Hammer Product Features
WOOKE brand TND-2.5N DTH Hammer class hammer, suitable for CWG76N drill bit diameters of approximately 78-80 mm.
The “N” indicates that this model uses a non-footvalve (no inner tube) design, meaning the hammer and bit are valveless-type, which simplifies the structure and improves reliability in certain drilling conditions.
TND-2.5N DTH Hammer Working Performance

Explanation:
The connection thread of the driver sub is classified into three-start(standard), two-start/single-start (customized).
The three-start connecting thread is suitable for drilling homogeneous rocks and can be easily disassembled manually or mechanically.
The two-start connecting thread is suitable for drilling cracks, holes, and complex rocks that are easy to getting stuck. It has better self-locking properties than the three-start thread. It is tighter to disassemble and assemble, and can be disassembled manually or mechanically.
The single-start connecting thread is suitable for deep hole foundations, water wells, and other complex rock formations. It has good self-locking properties and is not eay to fall off and can be disassembled manually or mechanically.
TND-2.5N DTH Hammer Part Details

TND-2.5N DTH Hammer Overall Information
