55043381
CONTROL ARM
The genuine 550 433 81 CONTROL ARM is a critical linkage component for positioning the drill boom and feed. It translates hydraulic cylinder force into precise mechanical movement, ensuring your drill rig maintains its positioning integrity for safe and efficient operation.
Description
550 433 81 CONTROL ARM As a key part of the boom or feed positioning system, this CONTROL ARM acts as a rigid lever. It connects a hydraulic cylinder to the main structure, converting linear push and pull into the rotational movement needed to…
Full Technical Description
550 433 81 CONTROL ARM As a key part of the boom or feed positioning system, this CONTROL ARM acts as a rigid lever. It connects a hydraulic cylinder to the main structure, converting linear push and pull into the rotational movement needed to articulate the boom. Its correct geometry is essential for the rig's ability to reach the designed drilling pattern accurately.
Wear or damage to this arm directly impacts drilling precision and operator safety. For example, if the pivot points become worn, the entire feed beam can develop excessive play, making it difficult to collar a hole correctly. A bent or cracked arm can fail under load, leading to a sudden, uncontrolled movement of the boom.
Look for signs of fatigue, like cracks near the welds or pivot bores, during routine inspections. Any noticeable looseness or 'slop' in the boom's movement when changing direction can indicate worn-out bushings within the arm. Replacing a damaged CONTROL ARM promptly prevents further wear on connected pins and cylinders.
Applications
- Underground drilling jumbos
- Mining and tunneling
- Hydraulic control systems
- Rock drilling spare parts
Specifications
| Brand | Sandvik |
|---|---|
| Machine Type | DD321-40 |
| Assembly | CONTROL ARM |
Used on machines
Brand
All Sandvik parts
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