Guchuan Piston for SB40 SB50 SB81 SB121 SB151 High Alloy Steel Excavator Hydraulic Rock Breaker Hammer
Meta Description: Discover Guchuan’s high-performance pistons for hydraulic breakers (SB40/GCB60, SB50/GCB100, SB81/GCB220, SB121/GCB320, SB151/GCB400). Made from durable materials like 616V and Gr15, with 1-year warranty. Engineered for precision, durability, and peak breaker efficiency.
Premium Piston for Hydraulic Breakers: The Heart of Reliability for SB/GCB Series | Guchuan Machinery
Why the Piston is Critical to Your Breaker’s Performance
The piston operates under extreme pressure and impact within the breaker, transferring hydraulic energy into powerful striking force. A poorly designed or manufactured piston can lead to reduced efficiency, frequent downtime, and increased operational costs. Guchuan’s pistons are precision-engineered to ensure optimal energy transfer, smoother operation, and extended service life—keeping your equipment running efficiently in demanding applications such as mining, quarrying, demolition, and construction.
Product Overview: High-Performance Pistons for SB/GCB Series Breakers
Our pistons are specifically designed for compatibility with popular SB/GCB series models, ensuring perfect fit and superior performance. Each piston is manufactured with meticulous attention to detail, from material selection to heat treatment and finishing.
Parameter
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Light Weight Range Hydraulic Breaker
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| Model No. | Chisel Diameter (mm) | Excavator Weight (ton) | Body Weight (kg) | Working Flow Rate (L/min) | Working Pressure (Bar) | Impact Rate (bpm) |
| SB10/GCB40 | 40 | 0.8-2.5 | 73 | 15-30 | 90-120 | 800-1400 |
| SB20/GCB45 | 45 | 1.2-3.0 | 100 | 20-40 | 90-120 | 700-1200 |
| SB30/GCB50 | 53 | 2.5-4.5 | 120 | 20-50 | 90-120 | 500-900 |
| SB40/GCB60 | 68 | 4.0-7.0 | 298 | 40-70 | 110-140 | 400-800 |
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Medium Weight Range Hydraulic Breaker
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| SB43/GCB75 | 75 | 6.0-9.0 | 375 | 50-90 | 120-150 | 400-800 |
| SB50/GCB100 | 100 | 11-16 | 890 | 80-110 | 150-170 | 350-700 |
| SB81/GCB22O | 140 | 18-26 | 1754 | 120-180 | 160-180 | 350-500 |
| SB81A/GCB220 | 140 | 18-26 | 1773 | 120-180 | 160-180 | 350-500 |
| HB20G/GCB200 | 135 | 18-25 | 1680 | 125-150 | 160-180 | 400-800 |
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Large Weight Range Hydraulic Breaker
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| SB121/GCB320 | 155 | 28-35 | 2555 | 180-240 | 160-180 | 300-450 |
| SB131/GCB350 | 165 | 35-43 | 3065 | 200-260 | 160-180 | 250-400 |
| HB30G/GCB300 | 150 | 25-30 | 2305 | 160-190 | 160-180 | 350-700 |
| GCB500 | 195 | 50-60 | 5350 | 245-290 | 230-250 | 100-150 |
| GCB650 | 210 | 65-100 | 7200 | 290-340 | 250-270 | 90-130 |
Advanced Material Technology
We use premium materials selected for their strength, toughness, and wear resistance:
616V & 20cr2ni4: Offers excellent fatigue strength and impact toughness, ideal for high-stress, high-cycle operations
GCr15: Provides superior surface hardness and core durability, reducing wear and extending component life.
Our material selection ensures the piston withstands repeated high-impact loads without deformation or premature failure.
Engineering & Manufacturing Excellence
Guchuan’s pistons are produced using state-of-the-art CNC machining and controlled heat-treatment processes. This results in:
Optimal Hardness Profile: Balanced surface hardness and inner toughness to resist cracking.
Precision Dimensional Accuracy: Ensures perfect fit and smooth operation within the breaker cylinder.
Advanced Surface Finishing: Minimizes friction and reduces wear on seals and cylinder walls.
Product Benefits & Advantages
1. Enhanced Durability: Resists wear, deformation, and fatigue even under continuous heavy-duty use
2. Improved Breaker Efficiency: Optimized design ensures maximum energy transfer for higher impact power and faster breaking.
3. Reduced Downtime: Longer service life means fewer replacements and lower maintenance costs.
4. Seamless Compatibility: Precision-engineered to match OEM specifications for a perfect fit and reliable performance.
5. Cost-Effective Solution: Superior quality extends breaker lifespan, providing better ROI over time.
Applications
These pistons are ideal for hydraulic breakers used in:
1. Rock breaking in mining and quarries
2. Demolition of concrete structures
3. Trenching and foundation work
4. Road construction and maintenance
Company Profile
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.