In the world of heavy-duty demolition, the Lower Bushing (3363 0894 80) is a silent hero. It serves as the primary guide for the working tool, ensuring that the piston strikes the chisel at a perfect 90-degree angle.
Merit manufactures premium-grade replacement lower hammer parts that meet or exceed OEM specifications for the Epiroc HB series, ensuring your breaker operates at peak efficiency while protecting your internal components.
Technical Specifications
| Feature | Details |
|---|---|
| Part Name | Lower Bushing / Wear Bushing / Alt Burç |
| Part Number | 3363 0894 80 |
| Compatible Models | Atlas Copco / Epiroc HB Series (HB 3000 / HB 3100 / HB 3600 / HB 4100 / HB 4700) |
| Material | High-Alloy Hardened Steel |
| Surface Treatment | Anti-Galling & Wear-Resistant Coating |
| Inside Finish | Precision-Honed for Low Friction |
Why the 3363 0894 80 Bushing is Critical for Your Breaker
The lower hammer part is more than just a sleeve; it is a sacrificial wear component designed to protect the Front Head. Using a Merit replacement part offers:
1. Superior Galling Resistance
The friction between a 210mm tool and the bushing creates extreme heat. Merit uses a specialized alloy steel that resists “cold welding” (galling), ensuring that the tool slides smoothly even under the high-frequency vibration of a 7-ton breaker.
2. Perfect Piston Alignment
If the 3363 0894 80 bushing wears down beyond its limit, the tool begins to tilt. This tilt leads to “offset strikes,” where the piston hits the edge of the tool instead of the center. Merit’s precise tolerances ensure that your tool stays centered, protecting your expensive striking piston from chipping.
3. Extended Service Life
Our bushings undergo deep-case induction hardening. This creates a diamond-hard inner surface to resist the abrasive dust of a quarry, while the outer body remains tough enough to absorb the structural vibrations of the hammer.
💡 Pro Tip: When to Replace Part 3363 0894 80?
Don’t wait for the bushing to crack. Measure the internal diameter regularly. If the gap between the tool and the bushing exceeds the manufacturer’s wear limit (usually around 8-10mm of play for large hammers), replace it immediately to prevent damaging the Front Head or Piston.
Merit: Your Global Partner for Epiroc Spare Parts
Based in Turkey, Merit provides high-quality, cost-effective alternatives to OEM parts. We ship the 3363 0894 80 lower bushing and other critical HB series components worldwide, ensuring minimal downtime for your fleet.
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