Maximize your secondary breaking efficiency with the Merit High-Performance Blunt Tool, a direct replacement for the Epiroc 3363 0914 25. With a massive 210 mm diameter and a total length of 1800 mm, this tool is specifically engineered for the HB 7000 series. Unlike pointed tools that penetrate, the blunt tool is designed to deliver massive impact shockwaves directly into the surface of oversized boulders and hard rock, causing them to shatter instantly.
Product Specifications
| Feature | Details |
|---|---|
| Product Name | Blunt Tool / Тупое долото |
| Part Number | 3363 0914 25 / 3363091425 |
| Compatible Model | Epiroc / Atlas Copco HB 7000 |
| Diameter | 210 mm |
| Length | 1800 mm |
| Material | Forged 42CrMo High-Alloy Steel |
Why the Blunt Tool (Ø210mm) is Essential for Hard Rock
The Epiroc HB 7000 is a 7-ton hammer designed for massive output. In specific applications, a pointed moil or chisel is less effective than a blunt face:
1. Maximum Energy Transfer
The flat surface of the 3363 0914 25 ensures 100% surface contact with the rock. Instead of the energy being used to “drill” into the material, the entire force of the piston strike is converted into a destructive shockwave. This is the fastest way to break down oversized granite or limestone boulders in a quarry.
2. Superior Durability in Hard Materials
Pointed tools often overheat and blunt quickly when used on extremely hard, non-stratified rock. The blunt tool maintains its shape and efficiency for much longer, providing a significantly lower cost-per-ton of broken material.
3. Reduced “Blank Firing” Damage
Because the blunt tool has a large contact area, it is easier for the operator to maintain firm down-pressure. This reduces the risk of the tool slipping off the rock, which prevents harmful blank firing and protects the hammer’s internal tie rods and piston.
Engineering Excellence by Merit
- Fully Forged Construction: Our 1800 mm tools are forged from a single piece of high-alloy steel to ensure structural integrity from the shank to the tip.
- Vacuum Heat Treatment: Specialized thermal processing ensures that the tool can absorb the extreme vibrations of the HB 7000 without developing fatigue cracks.
- Precision Shank Machining: Guarantees a perfect fit with the Epiroc HB 7000 bushings, ensuring the piston strikes the center of the tool every time.
Maintenance Tip: The Importance of Rotation
To prevent uneven wear on your 210 mm blunt tool:
- Rotate the Tool: Periodically rotate the tool within the front head to ensure even wear on the shank contact areas.
- Grease Every 2 Hours: The massive diameter of this tool creates significant friction. Always use premium molybdenum-disulfide chisel paste via the automatic ContiLube™ II system.
- Check the Bushings: If the lower bushing becomes worn, the blunt tool will start to strike at an angle, which can eventually chip the striking face of your piston.
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