Rock Breaker Store

BB3301A2 HARD ROCK CHISEL

High-Performance Hydraulic Breaker Tool for Severe Rock Fragmentation and Continuous Heavy-Duty

Operation

MERIT – Precision-Engineered Solutions for Hydraulic Breakers1. Product Overview & Engineering Concept

The MERIT BB3301A2 Hard Rock Chisel is a heavy-duty hydraulic breaker tool specifically engineered for

high-impact energy transmission in extremely hard and abrasive rock formations. The design philosophy

focuses on structural strength, fatigue resistance, and dimensional stability under prolonged operating cycles.

With a diameter of 8.46 in and an overall length of 69.29 in, the BB3301A2 is dimensionally optimized to

maintain a balanced mass distribution, ensuring efficient energy flow from the piston to the working tip while

reducing internal stress concentration along the tool body.

MERIT applies OEM-equivalent engineering standards, combining precision CNC machining with controlled

multi-stage heat treatment processes. This results in a hardened surface layer for wear resistance while

preserving a tough core structure capable of absorbing repeated shock loads without brittle failure.2. Technical Specifications & Material Properties

Product Code BB3301A2

Tool Type Hard Rock Chisel

Diameter (D1) 8.46 in

Overall Length (L1) 69.29 in

Material Grade High-strength heat-treated alloy steel

Heat Treatment Multi-stage controlled process

Surface Hardness Optimized for impact and wear resistance

Application Hydraulic Rock Breakers – Heavy Class

The alloy steel composition is carefully selected to provide high tensile strength and resistance to plastic

deformation. MERIT’s heat treatment parameters are tightly controlled to ensure consistent mechanical

properties throughout the cross-section of the tool.3. Performance Characteristics, Applications & Quality Control

The BB3301A2 Hard Rock Chisel delivers stable and predictable performance under continuous high-impact

conditions. Its optimized working-end geometry ensures effective penetration into hard rock surfaces while

minimizing rebound forces transmitted back to the hydraulic breaker.

Typical applications include quarry operations, mining excavation, reinforced rock demolition, and large-scale

infrastructure projects where tool reliability directly affects productivity and operating costs.

Each MERIT chisel undergoes a comprehensive quality assurance process including dimensional inspection,

material verification, and visual surface checks. This ensures that every BB3301A2 meets MERIT’s strict

internal standards and delivers long service life with reduced downtime.

MERIT – Precision-Engineered Solutions for Hydraulic Breakers