Engineering Case Study:HWX1400 Hydraulic Breaker Deployed on Heavy Quarry Project
Field Case Overview: Overcoming High-Hardness Rock Breakdown in Hard Quarry Conditions
Secondary rock breaking in open-pit quarrying demands consistent impact force and high attachment durability. During a recent high-capacity limestone extraction project, a quarry operator faced severe downtime caused by rapid tool wear and excessive vibration fatigue on their primary 20-ton carrier fleet.
To eliminate performance bottlenecks and control site noise emissions, the contractor retrofitted their Hyundai 20-ton excavator with the Jinan Changhao HWX1400 Box-Type Silent Hydraulic Breaker.
1. Product Description & Engineering Architecture
The Jinan Changhao HWX1400 is a medium-to-heavy class, fully enclosed box-type silent hydraulic breaker engineered specifically for 19–26 ton excavators.
Unlike conventional open-frame or side-type breakers, the HWX1400 housing fully encases the internal power cell within a reinforced, noise-dampening shell. Equipped with shock-absorbing polyurethane cushions and a precision-machined GCr15 piston and 20CrMo forged cylinder, the HWX1400 balances high kinetic impact force with effective vibration damping.
2. Technical Specifications (HWX1400)
| Parameter | Specification |
|---|---|
| Model | HWX1400 (Box-Type) |
| Suitable Excavator | 19–26 ton |
| Weight | 1855 kg |
| Oil Flow | 120–180 L/min |
| Working Pressure | 160–180 bar |
| Frequency | 350–500 bpm |
| Chisel Dia. | 140 mm |
| Hose Size | 1 inch |
3. Core Engineering Selling Points
Heavy-Duty Fully Enclosed Silent Box
The fully sealed box structure significantly dampens acoustic output, making it suitable for noise-sensitive civil projects while protecting internal components from falling rock and debris.
Precision-Machined Anti-Scuffing Power Cell
The GCr15 alloy steel piston and 20CrMo forged cylinder are precision-finished to exact tolerances, preventing piston scuffing and oil leakage under high operating oil temperatures.
Multi-Stage Heat-Treated Chisel Tool
Forged from high-tensile 42CrMo alloy steel, each 140 mm chisel undergoes three distinct cold heat-treatment cycles to ensure maximum fatigue strength and prevent tip breakage.
Excavator Boom & Arm Shock Absorption
High-density polyurethane dampening buffers inside the box housing absorb recoil energy, reducing stress on the excavator’s boom, pins, and hydraulic system during long breaking shifts.
4. Primary Applications
The HWX1400 hydraulic breaker is optimized for heavy construction and material handling:
Quarrying & Mining: Secondary boulder breaking, bench clearance, and oversize reduction.
Heavy Demolition: Breaking reinforced concrete structures, foundations, and bridge abutments.
Civil Infrastructure: Bedrock trenching, utility excavation, and road surface demolition.
5. Field Performance & On-Site Feedback
Throughout 500 continuous operation hours at the test site, the HWX1400 delivered sustained hitting power without oil temperature spikes or mechanical failures.
“The Jinan Changhao HWX1400 hydraulic hammer integrated seamlessly with our 20-ton Hyundai excavator. The impact power on high-hardness rock is excellent, and the noise and cab vibration reductions are noticeable compared to standard side-type hammers.”
— Site Equipment Operations Supervisor
6. Contact Jinan Changhao Machinery
Jinan Changhao Machinery Equipment Co., Ltd. supplies high-performance hydraulic breakers, quick couplers, and spare parts (pistons, chisels, seal kits) tailored for all major excavator brands.
To request detailed specifications, pricing, or customized mounting options for the HWX1400 hydraulic breaker, contact our engineering sales team directly.