Protect the structural integrity of your Epiroc HB 5800 with the Merit High-Performance Lower Tool Bushing. As a heavy-duty 5.8-ton breaker, the HB 5800 generates immense lateral forces during operation. The 3363 0949 98 bushing acts as the primary guide for the working tool, ensuring that the piston strikes the chisel with perfect axial alignment. By choosing Merit’s precision-engineered bushings, you prevent expensive damage to the front head and minimize the risk of piston scuffing.
Product Specifications
| Feature | Details |
|---|---|
| Product Name | Lower Tool Bushing / Букса (Втулка) |
| Part Number | 3363 0949 98 / 3363094998 |
| Compatible Model | Epiroc / Atlas Copco HB 5800 |
| Material | Forged Wear-Resistant Alloy Steel |
| Hardness | Induction Hardened (Surface 52-56 HRC) |
Why Choose the Merit 3363 0949 98 Bushing?
The HB 5800 is designed for the most demanding quarrying and demolition environments. Standard bushings often fail prematurely under such loads. Merit components offer:
1. Extreme Abrasion Resistance
Our bushings are manufactured from specialized alloy steel and undergo a multi-stage heat treatment. This results in a deep hardened layer that resists the abrasive “grinding” effect of rock dust and concrete particles, significantly extending the part’s service life.
2. Optimized Lubrication Flow
The 3363 0949 98 bushing features precision-machined internal grease grooves. These are specifically designed to work with the Epiroc automatic lubrication system, ensuring that chisel paste is distributed evenly across the entire surface of the tool shank to prevent heat-related seizing.
3. Precision Fitment
Every Merit bushing is machined to exact micron-level tolerances. This ensures a secure fit within the HB 5800 front head, preventing internal vibrations that can lead to housing fatigue and cracks.
Maintenance Tip: When to Replace Your HB 5800 Bushing?
To protect your piston and cylinder, you should inspect the bushing every 50 operating hours:
- The Wear Limit: Measure the gap between the tool and the bushing. If the clearance exceeds the factory limit (typically 8mm for a hammer of this size), the bushing must be replaced immediately.
- Vertical Strike Alignment: A worn bushing allows the tool to “wobble,” causing the piston to strike at an angle. This is the #1 cause of chipped pistons and broken tie rods.
- Check the Pins: Always inspect the Tool Retaining Pins when replacing the lower bushing to ensure the entire guide system is tight.
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