Bearing 550 350 50 – What Is It?
The Bearing 550 350 50 is an internal component of the rock drill. Manufactured from high-quality bronze, it is mounted as a ring on top of the damping piston. Its main function is to act as a bearing interface between the drill’s middle housing and the damping piston. This prevents damage to the primary body and ensures smoother operation, ultimately extending the working life of the drill.
Key Functions & Benefits
- Protects main housing: Serves as a buffer between the damping piston and drill body.
- Durable bronze construction: Offers excellent wear resistance and reliability under high stress.
- Improved efficiency: Maintains smooth piston movement for consistent drilling performance.
- Extended service life: Prevents costly breakdowns and lengthens operational lifespan.
Where It’s Installed
The bearing is placed inside the rock drill, specifically positioned around the damping piston within the drill’s middle housing.
Compatible Equipment
Rock Drills (Sandvik HL Series)
HL 500, HL 538, HL 600, HL 700, HL 780, HL 800, HLX5, HLX5T, HL 1000, HL 1500
Drill Rigs
Sandvik DD321, DX 600, DX 680, DX 700, DX 780, DX 800, Ranger series, DD 322
Typical Use Cases
- Hard rock drilling where shock absorption and housing protection are critical.
- Projects requiring long-term reliability in abrasive conditions.
- Applications where maintaining smooth piston operation improves penetration efficiency.
Basic Maintenance Notes
- Inspect regularly for wear and scoring on the bronze surface.
- Ensure proper lubrication is maintained to prevent premature failure.
- Replace if excessive clearance or deformation is observed during service checks.
Specifications (At a Glance)
| Part Number | 550 350 50 |
| Also Searched As | 55035050, 550-350-50 |
| Category | Bearing / Internal Rock Drill Component |
| Material | Bronze |
| Primary Function | Provides piston-to-body bearing support, protects main housing |
Related Parts & Search Terms
- Bearing 550 350 50, 55035050, 550-350-50
- Rock drill bearing, bronze piston bearing, damping piston support
- Associated with bushings, base plates, and accumulator components
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