Maximize your breaking power in the toughest conditions with the Merit Flat Hard Rock Chisel (Part No. 991A2). Specifically engineered for Rammer hydraulic breakers, this heavy-duty tool is designed for high-density rock and reinforced concrete. When precision and durability are non-negotiable, the 991A2 chisel delivers consistent impact energy to get the job done faster.
Product Specifications
| Feature | Details |
|---|---|
| Product Name | Flat Hard Rock Chisel / Wedge |
| Part Number | 991A2 |
| Compatible Brand | Rammer |
| Tip Design | Flat (Wedge) Cross-Cut |
| Material | Forged 42CrMo Alloy Steel |
| Application | Hard Rock, Trenching, and Mass Excavation |
Export to Sheets
Why Choose the Merit 991A2 Chisel?
Breaking hard rock requires more than just force; it requires a tool that can withstand extreme thermal and mechanical stress. The Merit 991A2 offers several engineering advantages:
1. Optimized Wedge Geometry
The flat “wedge” design of the 991A2 is perfect for creating a splitting action. This makes it the ideal choice for trenching in layered rock or breaking up oversized hard rock boulders where a standard point might slip or blunt prematurely.
2. Advanced Forging & Heat Treatment
Each chisel is forged from high-alloy steel and undergoes a specialized vacuum heat treatment. This process creates a hardened outer skin for maximum abrasion resistance and a shock-absorbing core that prevents the tool from snapping under high-frequency impacts.
3. Precision Fit for Rammer Breakers
This tool is machined to exact tolerances to match Rammer specifications. A perfect fit in the bushings ensures that the piston strike is centered, which prevents “blank firing” damage and extends the life of your breaker’s internal components.
Key Benefits
- High Impact Energy: Designed to transfer 100% of the breaker’s power directly into the rock.
- Fracture Resistance: Superior grain structure in the steel prevents “mushrooming” and brittle fractures.
- Cost Efficiency: Longer wear life means fewer tool changes and lower cost-per-ton of material broken.
Operational Tip: Maximizing Tool Life
To get the most out of your 991A2 Flat Chisel:
- Avoid Prying: Never use the chisel as a lever; this is the leading cause of tool breakage.
- Lubrication is Key: Use high-quality molybdenum-based chisel paste every 2 hours to prevent friction heat.
- Reposition Frequently: If the rock doesn’t break within 15 seconds, reposition the tool to prevent heat buildup and “cold welding” to the bushing.
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