55077477
CHUCK
The 550 774 77 CHUCK is a critical replacement part for the drifter's rotation unit. It securely grips the drill steel shank, ensuring efficient transfer of torque and impact energy for consistent drilling performance and reduced wear on related components.
Description
550 774 77 CHUCK Located at the front of the rock drill, the CHUCK is responsible for holding the drill steel and transferring rotational force from the motor. It works directly with the shank adapter to turn the drill string. A proper fit is…
Full Technical Description
550 774 77 CHUCK Located at the front of the rock drill, the CHUCK is responsible for holding the drill steel and transferring rotational force from the motor. It works directly with the shank adapter to turn the drill string. A proper fit is essential for straight holes and effective energy transmission to the rock.
When a CHUCK wears out, the drill steel can become loose. This play leads to inefficient drilling, as impact energy is lost and not fully transferred to the bit. It also causes accelerated wear on the drill steel shank and the drifter's internal rotation components, increasing the risk of premature failure.
Check the CHUCK for excessive wear or damage whenever you change the drill steel. If you notice the shank adapter is loose or shows signs of uneven wear, it's a strong indicator the CHUCK needs replacement. Always consider replacing the driver bushing at the same time for best results.
Applications
- Underground drilling jumbos
- Mining and tunneling
- Hydraulic control systems
- Rock drilling spare parts
Specifications
| Brand | Sandvik |
|---|---|
| Machine Type | DT821-C |
| Assembly | JACK |
Brand
All Sandvik parts
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