Hydraulic Rock Breaker Hammer Chisel Tool 40Cr 42CrMo Drill Rod

Q1: Why is my breaker chisel tip softening or "mushrooming"?

A: This is usually caused by excessive heat. If you strike the same hard rock for more than 30 seconds, the temperature can exceed 400°C, causing the steel to soften. Always change your striking point frequently and never exceed 30 seconds per spot.

Q2: What causes the shank of the drill rod to chip or snap at the pin slot?

A: This is typically the result of Blank Firing. When the chisel is not in firm contact with the rock, the energy is absorbed by the flat pins and the shank rather than the target. Regular lubrication and ensuring firm contact can prevent this.

Q3: Is it okay to use the chisel to pry or pull heavy objects?

A: No. Hydraulic breaker chisels are designed for vertical impact, not side stress. Using the chisel as a lever or pulling with the excavator arm will cause a fatigue fracture. You can identify this by a 90-degree snap on the rod.

Q4: How should I "warm up" a brand-new chisel?

A: Like an athlete, a new chisel needs a warm-up. Start with low power and frequency on relatively soft material. This allows the heat-treated steel to adapt to the vibration before you move to heavy-duty rock breaking.

Q5: When can I claim a warranty for a broken chisel?

A: Claims are generally accepted for Material Defects (evidenced by internal air bubbles or radial cracks from a central point) or Bending (caused by insufficient heat treatment). Damage from prying, blank firing, or off-center striking is considered improper operation.

Q6: Why is the top of my chisel (the striking face) chipping?

A: This is often caused by Off-center Striking or Contamination. If your bushings are worn, the piston hits the chisel at an angle. Also, if dirt or metal chips get between the piston and chisel, they act as "stress points" that cause fragmentation.