Restore the maximum impact energy of your hydraulic breaker with the Merit Premium Striking Piston, specifically designed for Rammer models (compatible with the 162721 part number). The piston is the most critical moving component of the hammer, responsible for converting hydraulic pressure into the massive kinetic energy required to break rock and concrete. Engineered for extreme durability, Merit pistons are built to withstand millions of cycles without cracking or losing performance.
Product Specifications
| Feature | Details |
|---|---|
| Product Name | Striking Piston / Piston / Боёк |
| Part Number | 162721 |
| Compatible Brand | Rammer |
| Material | High-Nickel Chrome-Moly Alloy Steel |
| Processing | Precision Honing & Multi-Stage Heat Treatment |
Export to Sheets
Why Choose the Merit 162721 Piston?
The 162721 piston operates at high speeds and under immense pressure. A low-quality piston can lead to catastrophic failure, damaging the cylinder and seal carrier. Merit pistons offer:
1. Advanced Metallurgical Composition
Our pistons are forged from premium alloy steel with a high nickel and chromium content. This ensures the part can handle the extreme “rebound” shocks of heavy-duty breaking without developing internal fatigue cracks.
2. Precision Mirror Finish
The surface of the 162721 piston is ground and polished to a mirror finish. This reduces friction against the seal kit, preventing heat buildup and extending the life of your hydraulic seals. It also ensures a perfect oil film is maintained, preventing metal-to-metal contact with the cylinder.
3. Optimized Impact Face
The striking face (the bottom of the piston that hits the tool) is specially hardened to prevent “mushrooming” or chipping. This ensures that 100% of the energy is transferred squarely into the chisel, maximizing your productivity on the job site.
Key Benefits
- Maximum Hit Power: Perfectly balanced weight-to-length ratio ensures the highest joules per blow.
- Extended Seal Life: Ultra-smooth surface prevents premature wear on the seal kit.
- OEM Compatibility: 100% dimensional match for Rammer part number 162721, allowing for a seamless “drop-in” replacement.
Maintenance Tip: Protecting Your Piston
To ensure the longest possible life for your Rammer 162721 piston:
- Lubrication: Always keep the tool shank well-greased. If the bushings wear out, the tool will tilt, causing the piston to hit the tool at an angle (offset strike), which can chip the piston face.
- Hydraulic Cleanliness: Ensure your excavator’s hydraulic oil is filtered and clean. Contaminants in the oil can score the surface of the piston, leading to leaks and loss of power.
- Warm-up: In cold climates, always warm up the hammer by cycling it slowly before starting full-power demolition.
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