New addition to product line delivers 3,692 Joules of impact energy for building demolition, quarry operations, and road construction

CHANGZHOU, China – March 26, 2026 – Jiangsu Guchuan Machinery Co., Ltd., a leading manufacturer of hydraulic breakers based in Changzhou, today announced the launch of its HB20G Open Type Hydraulic Breaker, designed for excavators in the 18-25 ton class. The new model delivers 3,692 Joules of impact energy and features an open type design optimized for heavy-duty applications including building demolition, road construction, mining operations, and industrial maintenance.

The HB20G represents the latest addition to Guchuan Machinery’s comprehensive product line, which includes SB series, MS series, HB series, and MB series hydraulic breakers serving excavators from 1.5 to 70 tons. With the company’s proprietary auto-frequency variable technology—developed in-house in 2019—the HB20G automatically adjusts impact frequency based on material resistance, optimizing performance while protecting both the breaker and carrier machine.

Technical Specifications

The HB20G is engineered for excavators in the 18-25 ton range and operates with the following specifications:

The 135mm tool diameter makes the HB20G particularly effective for breaking medium-hard rocks such as granite and limestone, as well as C30–C50 grade reinforced concrete and thick asphalt pavement—the materials most commonly encountered in heavy demolition and construction applications.

Open Type Design: Built for Durability and Serviceability

The HB20G features an open type construction that offers distinct advantages for heavy-duty applications:

• Superior heat dissipation: The open frame design allows maximum airflow around the breaker body, preventing overheating during extended operation periods essential for mining and continuous demolition work.

• Enhanced serviceability: Critical components are readily accessible, enabling maintenance crews to perform routine inspections and repairs with minimal disassembly, reducing downtime and service costs.

• Robust structural integrity: Heavy-duty wear plates and reinforced brackets withstand the extreme forces encountered in primary rock breaking and reinforced concrete demolition.

• Cost-effective operation: The simplified design translates to lower maintenance requirements and reduced parts replacement costs over the breaker’s service life.

Nitrogen-Assisted Hydraulic Technology

The HB20G operates on a proven hydraulic-assisted nitrogen gas return mechanism. During operation, hydraulic oil drives the piston upward against a nitrogen gas chamber. When the piston reaches the top of its stroke, the compressed nitrogen accelerates it downward to strike the tool, delivering 3,692 Joules of kinetic energy to the material being broken. This cycle repeats at rates up to 600 blows per minute.

Key benefits of the nitrogen-assisted design include:

• Consistent impact energy: Nitrogen maintains stable pressure across varying temperatures and operating conditions

• Reduced hydraulic demand: Gas-assisted return reduces required hydraulic flow, improving overall system efficiency

• Lower operating temperatures: Efficient energy transfer minimizes heat generation during extended operation

Applications Across Multiple Industries

The HB20G is designed to serve a wide range of heavy-duty applications:

Building Demolition

The HB20G delivers the power needed for structural demolition of reinforced concrete beams, columns, slabs, and walls. It is equally effective for industrial building demolition, bridge removal, and urban renewal projects where controlled, efficient breaking is essential.

Road and Transportation Infrastructure

Road construction and maintenance crews will find the HB20G effective for breaking asphalt and concrete pavement, road widening excavation, bridge approach slab removal, and tunnel excavation for railway and metro projects. The model is also suitable for airport runway repair and port facility maintenance.

Mining and Quarry Operations

As a core heavy-duty application, mining and quarry operations benefit from the HB20G’s continuous operation capability. The model serves primary and secondary rock breaking in open-pit mines, stone extraction in quarries, overburden removal, and underground mining support.

Municipal and Utility Engineering

Utility contractors can deploy the HB20G for rock trenching during water, sewer, gas, and electric line installation, as well as manhole and vault demolition, flood control structure repair, and underground utility tunnel construction.

Industrial and Metallurgical Applications

The HB20G is well-suited for steel mill slag breaking, furnace lining demolition, cement plant maintenance, smelter operations, and equipment foundation removal across heavy industrial facilities.

Specialized Applications

Additional applications include hydraulic engineering for dam spillway repair and canal rehabilitation, emergency response for disaster recovery, and frozen ground excavation in cold climates.

Manufacturing Excellence and Quality Control

Guchuan Machinery manufactures the HB20G at its Changzhou facility, which houses professional horizontal machining centers, advanced heat treatment equipment, and Japanese vertical grinders capable of achieving micron-level precision. The company’s manufacturing processes result in products with 2-3 times the durability of conventional alternatives.

Each HB20G hydraulic breaker undergoes comprehensive quality control including material certification, heat treatment verification, machinery test reporting, outgoing inspection, and performance testing to verify impact energy, impact rate, and operating parameters.

Warranty and Support

Guchuan Machinery provides a 12-month warranty on hydraulic breakers and a 6-month warranty on spare parts. The company offers technical support for installation and commissioning, operator training for frontline workers, and after-sales support throughout the product lifecycle.

OEM and Global Distribution Capabilities

As a B2B-focused manufacturer established in 2010, Guchuan Machinery offers comprehensive OEM and ODM services, manufacturing breakers to customer specifications with custom branding and packaging. The company has exported products to markets including Saudi Arabia, Korea, Thailand, India, Canada, Australia, Peru, Egypt, Brazil, Mexico, and South Africa.

About Guchuan Machinery

Jiangsu Guchuan Machinery Co., Ltd. is a high-tech enterprise based in Changzhou, Jiangsu Province, specializing in the manufacture of hydraulic breakers since 2010. The company holds 3 invention patents, 23 utility model patents, and 15 intellectual property rights. In 2019, Guchuan Machinery successfully developed proprietary auto-frequency variable hydraulic breaker technology. The company’s product line includes SB series, MS series, HB series, and MB series hydraulic breakers serving excavators from 1.5 to 70 tons, with additional capability to manufacture super-heavy models with tool diameters from 175mm to 210mm.