Guchuan High Quality 20CrMo Hydraulic Breaker Main Body for SB40 SB50 SB70

Powering Productivity: An Expert Guide to Guchuan’s SB Series Breaker Hammer Main Bodies (SB40/GCB60, SB50/GCB100, SB70/GCB210)

Today, we delve into the core of three exceptional models from our flagship SB series: the SB40 / GCB60, SB50 / GCB100, and SB70 / GCB210 breaker main bodies.

Understanding the Heart of the Hammer: The Main Body

The main body of a hydraulic breaker is its powerhouse. It houses the critical mechanism that converts hydraulic energy into powerful, percussive force. At Guchuan, we engineer this core component to exacting standards, ensuring unmatched durability, efficiency, and performance in the most demanding applications, from construction and demolition to mining and quarrying.

Featured Models: SB40 / GCB60, SB50 / GCB100, SB70 / GCB210

These three models represent a versatile range designed for medium to heavy-duty tasks, catering to a wide array of carrier machines and job site requirements.

1. Model: SB40 / GCB60

• Ideal For: Small excavators (typically 4-7 tons). Perfect for general demolition, secondary rock breaking, trench work, and asphalt paving break-up.

• Key Applications: Construction site preparation, concrete slab demolition, boulder breaking in quarries.

2. Model: SB50 / GCB100

• Ideal For: Mid-sized excavators (typically 10-15 tons). A true heavy-duty workhorse for intensive demolition and challenging rock breaking.

• Key Applications: Primary rock breaking in quarries, foundation demolition, large-scale concrete structure demolition, mining operations.

3. Model: SB70 / GCB210

• Ideal For: Mid-sized excavators (typically 18-26 tons). Engineered for maximum impact power in the most severe conditions.

• Key Applications: High-production quarrying, massive rock and boulder breaking, mining, heavy industrial demolition, trenching in hard rock.

• Engineering Excellence: Core Materials & Technology

  The superior performance of Guchuan breaker bodies stems from our meticulous material selection and proprietary manufacturing technology.

  • Body Material: 20CrMo Alloy Steel – This chromium-molybdenum alloy steel is renowned for its high strength, excellent toughness, and superior fatigue resistance. It provides the main chamber with exceptional structural integrity to withstand immense internal pressures and external shocks over prolonged periods, significantly extending service life.

  • Piston Material: 616V – The piston is the hammer's kinetic heart. We utilize 616V, a specially treated, high-grade alloy steel known for its extreme hardness, wear resistance, and ability to maintain its shape under repeated high-impact stress. This minimizes deformation and wear, ensuring consistent impact energy transfer and long-term reliability.

  • Guchuan’s Proprietary Technology: Our in-house R&D capability shines through our auto-frequency modulation and hydraulic system. Unlike simpler designs, our system intelligently adjusts the impact frequency based on material hardness, optimizing energy use and preventing damage from blank firing. The pure hydraulic design ensures smoother operation, higher efficiency, and reduced stress on both the breaker and the carrier's hydraulic system.

  ---

  Why Choose Guchuan SB Series Breaker Main Bodies?

  1. Unmatched Durability: The combination of 20CrMo body and 616V piston creates a wear-resistant, shock-absorbing core that stands up to relentless daily abuse.

  2. High Efficiency & Productivity: Optimized hydraulic flow design and auto-frequency modulation deliver maximum impact energy per liter of hydraulic oil, translating to faster breaking cycles and lower fuel consumption for your carrier.

  3. Enhanced Reliability & Lower Downtime: Precision engineering and premium materials reduce the risk of catastrophic failure. Their robust construction means fewer stoppages for maintenance and repairs, maximizing your equipment's uptime.

  4. Carrier Protection: Our pure hydraulic system with built-in safeguards minimizes harmful vibrations and hydraulic shock, protecting your valuable excavator from excessive wear and tear.

  5. Versatility & Compatibility: These models are designed for seamless integration with a wide range of carrier sizes and brands. Furthermore, Guchuan can produce super-heavy-duty hammers to fit tool diameters of 175mm, 195mm, 200mm, 205mm, 210mm, and beyond, showcasing our custom engineering prowess.

     Parameter

      

     Light Weight Range Hydraulic Breaker
     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
     Medium Weight Range Hydraulic Breaker
     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
     Large Weight Range Hydraulic Breaker
     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

     Partner with a Trusted Expert

     Selecting the right breaker is critical to your project's profitability and timeline. The SB40, SB50, and SB70 main bodies embody Guchuan's dedication to quality, innovation, and partnership in the B2B landscape.

     As your expert manufacturing partner, we don't just sell products; we deliver engineered solutions backed by over a decade of specialized experience. We invite OEMs, distributors, and large-scale contractors to connect with us for detailed technical specifications, competitive pricing, and discussions on custom solutions.

     Explore our full range of breaker hammers and discover the Guchuan difference – where power meets precision engineering.

     Company Profile

     Jiangsu Guchuan Machinery Co., Ltd. is a leading manufacturer based in Changzhou, Jiangsu Province, China. Established in 2010, our company occupies over 18,000 square meters and employs more than 120 skilled professionals. We specialize in the research, development, manufacturing, sales, and service of hydraulic breaker hammers and other Construction Attachments, offering comprehensive solutions for the construction and demolition industries.