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SB81A Hydraulic Breaker Rock Breaker Box Type for 18-26 Ton Excavator With 140mm Chisel

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SB81A Hydraulic Breaker Rock Breaker Box Type for 18-26 Ton Excavator With 140mm Chisel

Brand Name:	SEWOOMIC
Model Number:	SB81 / GCB220
MOQ:	1
Price:	Negotiable
Packaging Details:	Wooden Box
Payment Terms:	L/C,T/T

Detail Information

Product Description

Detail Information

Place of Origin:

China

Certification:

CE / ISO9001

Suitable Excavator:

18-26 Ton

Operating Weight:

1978kg

Working Flow:

120-180 L/min

Setting Pressure:

210-230 Bar

Operating Pressure:

160-180 Bar

Impact Energy:

4067J

Impact Rate:

350-500

Hose Diameter:

1 Inch

Noise Level:

118 DB

Tool Diameter:

140mm

Warranty:

1 Year

Supply Ability:

100 units/month

Product Description

SB81A Silent Box Type Nitrogen Hydraulic Breaker – Professional Product Introduction for 18–26 Ton Excavators

About Guchuan Machinery Co., Ltd.

Established in 2010 and based in Changzhou, Jiangsu, China, Guchuan Machinery Co., Ltd. is a professional manufacturer and supplier focused on high‑quality hydraulic breakers, hydraulic hammers, rock breakers, and demolition attachments for construction machinery. As an experienced B2B enterprise serving the global market, we maintain long‑term, stable strategic cooperation with many world‑famous brands of construction machinery manufacturers and hydraulic breaker producers. Our core competitiveness lies in independent R&D, precision manufacturing, stable quality control, and customized solutions for global distributors, rental companies, construction contractors, and engineering enterprises.

We provide a complete product lineup covering small, medium, heavy‑duty, and ultra‑heavy‑duty hydraulic breakers. Our standard models include:

SB10 / GCB30, SB20 / GCB40, SB30 / GCB50, SB35 / GCB53, SB40 / GCB60, SB43 / GCB75, SB45 / GCB85, SB50 / GCB100, SB60 / GCB190, SB70 / GCB210, SB81 / GCB220, SB100 / GCB280, SB121 / GCB320, SB131 / GCB350, SB140 / GCB360, SB151 / GCB400;

MS550 / GHB120, MS600 / GHB130, MS700 / GHB140, MS800 / GHB160;

HB15G / GCB180, HB20G / GCB200, HB30G / GCB300, HB40G / GCB330;

MB1500 / NB1500.

We also produce customized ultra‑heavy‑duty breakers with tool diameters of 175 mm, 195 mm, 200 mm, 205 mm, and 210 mm for large‑scale mining, quarrying, and heavy demolition projects.

Guchuan Machinery owns independent intellectual property rights and strong capabilities in developing auto‑variable frequency pure hydraulic breakers and nitrogen‑assisted hydraulic breakers. All products are manufactured under strict quality management systems to ensure high performance, reliability, durability, and cost‑effectiveness for global customers.

Product Overview: SB81A Silent Box Type Nitrogen Hydraulic Breaker

The SB81A silent box type nitrogen hydraulic breaker is a mid‑to‑heavy‑class hydraulic hammer designed for 18–26 ton excavators. It integrates advanced hydraulic technology, nitrogen energy storage technology, fully enclosed silent box structure, anti‑vibration design, and precision machining. This product is engineered for urban construction, municipal maintenance, building renovation, landscaping, farmland water conservancy, road & traffic engineering, and industrial site reconstruction.

As a professional hydraulic breaker manufacturer, Guchuan Machinery designed the SB81A to solve common pain points in construction: high noise, strong vibration, limited working space, insufficient impact energy, low working efficiency, high failure rate, and difficult maintenance. The SB81A delivers stable power, low noise, strong adaptability, easy operation, and long service life, making it a top choice for global construction customers.

SB81A Hydraulic Breaker Rock Breaker Box Type for 18-26 Ton Excavator With 140mm Chisel 0

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

Working Principle & Technical Features

The SB81A adopts a nitrogen‑hydraulic composite power system, which is the core technical advantage of Guchuan Machinery.

1. Nitrogen Energy Storage & Recovery System

The rear chamber is filled with high‑pressure nitrogen. During the piston recoil stroke, nitrogen is compressed and stores energy. During the downward stroke, hydraulic pressure and nitrogen expansion energy act on the piston simultaneously, greatly improving impact energy and impact frequency. This design reduces hydraulic oil demand, lowers energy consumption, reduces heat generation, and protects the excavator hydraulic system.

2. Fully Enclosed Silent Box Structure

The fully enclosed box shell with built‑in sound‑absorbing and shock‑absorbing materials effectively isolates noise and absorbs vibration. The noise level is controlled at 118 dB, meeting urban environmental protection standards and allowing daytime and nighttime construction in noise‑sensitive areas.

3. Pure Hydraulic & Auto‑Variable Frequency Control

With independent R&D of auto‑variable frequency technology, the breaker automatically adjusts impact frequency according to material hardness (soft soil, concrete, rock). It maintains stable impact energy, avoids empty firing, reduces component wear, and improves construction safety.

4. High‑Strength Material & Precision Machining

Key components such as piston, cylinder, front head, tool bushing, and control valve are made of high‑strength alloy steel (40CrMo, 42CrMo) through precision forging, heat treatment, and grinding. This ensures high wear resistance, pressure resistance, and long service life under heavy load.

5. Anti‑Blank Firing & Overload Protection

The built‑in anti‑blank firing system prevents piston damage when the tool is not in contact with the material. Overload pressure protection avoids breakdowns caused by excessive system pressure, improving stability and reducing maintenance costs.

6. Easy Maintenance & Long Service Life

The modular design simplifies seal replacement, tool changes, and daily inspections. High‑quality oil seals and wear components extend service intervals and reduce downtime.

Product Advantages Compared to Ordinary Hydraulic Breakers

1. Ultra‑Low Noise & Vibration

Fully enclosed silent box reduces noise by 15–25 dB compared with open‑type breakers. Low vibration protects the excavator arm and improves operator comfort.

2. Strong & Stable Impact Energy

At 4067 J, the SB81A efficiently breaks reinforced concrete, medium‑hard rock, asphalt, and hardened soil. Nitrogen assistance ensures consistent power without hydraulic fluctuations.

3. Wide Adaptability to 18–26 Ton Excavators

Matches most brands: CAT, Komatsu, Hitachi, Kobelco, Doosan, Hyundai, LiuGong, XCMG, SANY, etc. Simple installation and debugging.

4. Energy Saving & High Efficiency

120–180 l/min oil flow matches medium excavators, reducing fuel consumption. 350–500 Bpm impact rate improves efficiency by 20–30% in municipal and renovation projects.

5. Heavy‑Duty Durability & Low Failure Rate

High‑strength components, advanced heat treatment, and strict assembly ensure stable performance in harsh conditions.

6. Safe & User‑Friendly Design

Anti‑blank firing, overload protection, and low vibration enhance safety for indoor, underground, and urban worksites.

Main Application Fields & Scenarios

The SB81A silent box type nitrogen hydraulic breaker is widely used in many fields with strict requirements for noise, space, vibration, and construction precision.

1. Municipal & Public Facility Maintenance

Sidewalk & Small‑Area Road Repair: Break concrete sidewalks, curbs, and damaged asphalt for patch repair.

Pipeline & Cable Trench Excavation: Break hardened soil and shallow rock for utility trenches.

Pipeline & Drainage Construction: Demolish concrete drainage ditches, pipe wells, and septic tanks; clear hardened blockages.

Urban Greening & Landscape Renovation: Break old flower beds, retaining walls, and small concrete foundations (light poles, billboards).

2. Building Decoration & Renovation

Interior & Exterior Wall Reconstruction: Demolish non‑bearing walls, concrete partitions, and widen door/window openings.

Floor & Tile Removal: Break bathroom/kitchen floor layers and old terraces without structural damage.

Small Foundation Demolition: Break equipment bases, steps, and canopy foundations.

Basement Local Demolition: Suitable for confined underground spaces.

Decoration Grooving & Drilling: Wall chases for pipelines with controlled vibration.

3. Landscaping & Farmland Water Conservancy

Rock Breaking & Land Leveling: Break field boulders and weathered rock for land preparation.

Tree Pit Excavation: Suitable for hard soil and soft rock.

Ditch & Pond Renovation: Break hardened ditch linings and repair small dams.

4. Traffic & Road Auxiliary Engineering

Highway Local Maintenance: Break guardrail foundations and bridge deck damage.

Tunnel Minor Repair: Compact size for narrow tunnel spaces.

Railway Maintenance: Clear track bed hardened blocks and repair drainage ditches.

5. Industrial & Commercial Sites

Factory Floor Renovation: Break old workshop concrete floors for replacement or grooving.

Equipment Demolition & Cleaning: Break small production line foundations and storage tank bases.

In all these scenarios, the SB81A provides high efficiency, low noise, low vibration, and safe construction.

Why Choose Guchuan Machinery SB81A Hydraulic Breaker?

Professional Manufacturer Experience: Established 2010, focused on hydraulic breakers, deep industry expertise.
Complete Product Range: Full series from small to ultra‑heavy duty, one‑stop procurement.
Independent R&D Capability: Auto‑variable frequency pure hydraulic & nitrogen technology, stable performance.
Strict Quality Control: High‑strength materials, precision machining, reliable quality.
Global Cooperation & Recognition: Partner with world‑famous brands, products sold worldwide.
Professional B2B Service: Customization, technical support, after‑sales, spare parts supply.
Cost‑Effective Solution: High performance, long life, low maintenance, high return on investment.

Tags:

concrete breaker attachment excavator

hydraulic jack hammer

backhoe rock hammer

Products Details

Home > Products >

Hydraulic Breaker

SB81A Hydraulic Breaker Rock Breaker Box Type for 18-26 Ton Excavator With 140mm Chisel

All Category

Hydraulic Hammer

Hydraulic Breaker

Hydraulic Breaker Hammer

Excavator Breaker

Fully Hydraulic Breaker

Hydraulic Breaker Spare Parts

Excavator Quick Hitch

Excavator Hydraulic Shear

Hydraulic Grapple

Excavator Pulverizer

Excavator Screening Bucket

SB81A Hydraulic Breaker Rock Breaker Box Type for 18-26 Ton Excavator With 140mm Chisel

Brand Name:	SEWOOMIC
Model Number:	SB81 / GCB220
MOQ:	1
Price:	Negotiable
Packaging Details:	Wooden Box
Payment Terms:	L/C,T/T

Detail Information

Product Description

Detail Information

Place of Origin:

China

Brand Name:

SEWOOMIC

Certification:

CE / ISO9001

Model Number:

SB81 / GCB220

Suitable Excavator:

18-26 Ton

Operating Weight:

1978kg

Working Flow:

120-180 L/min

Setting Pressure:

210-230 Bar

Operating Pressure:

160-180 Bar

Impact Energy:

4067J

Impact Rate:

350-500

Hose Diameter:

1 Inch

Noise Level:

118 DB

Tool Diameter:

140mm

Warranty:

1 Year

Minimum Order Quantity:

Price:

Negotiable

Packaging Details:

Wooden Box

Delivery Time:

20-25 days

Payment Terms:

L/C,T/T

Supply Ability:

100 units/month

Product Description

SB81A Silent Box Type Nitrogen Hydraulic Breaker – Professional Product Introduction for 18–26 Ton Excavators

About Guchuan Machinery Co., Ltd.

We provide a complete product lineup covering small, medium, heavy‑duty, and ultra‑heavy‑duty hydraulic breakers. Our standard models include:

MS550 / GHB120, MS600 / GHB130, MS700 / GHB140, MS800 / GHB160;

HB15G / GCB180, HB20G / GCB200, HB30G / GCB300, HB40G / GCB330;

MB1500 / NB1500.

We also produce customized ultra‑heavy‑duty breakers with tool diameters of 175 mm, 195 mm, 200 mm, 205 mm, and 210 mm for large‑scale mining, quarrying, and heavy demolition projects.

Product Overview: SB81A Silent Box Type Nitrogen Hydraulic Breaker

SB81A Hydraulic Breaker Rock Breaker Box Type for 18-26 Ton Excavator With 140mm Chisel 0

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

Working Principle & Technical Features

The SB81A adopts a nitrogen‑hydraulic composite power system, which is the core technical advantage of Guchuan Machinery.

1. Nitrogen Energy Storage & Recovery System

2. Fully Enclosed Silent Box Structure

3. Pure Hydraulic & Auto‑Variable Frequency Control

4. High‑Strength Material & Precision Machining

5. Anti‑Blank Firing & Overload Protection

6. Easy Maintenance & Long Service Life

The modular design simplifies seal replacement, tool changes, and daily inspections. High‑quality oil seals and wear components extend service intervals and reduce downtime.

Product Advantages Compared to Ordinary Hydraulic Breakers

1. Ultra‑Low Noise & Vibration

Fully enclosed silent box reduces noise by 15–25 dB compared with open‑type breakers. Low vibration protects the excavator arm and improves operator comfort.

2. Strong & Stable Impact Energy

At 4067 J, the SB81A efficiently breaks reinforced concrete, medium‑hard rock, asphalt, and hardened soil. Nitrogen assistance ensures consistent power without hydraulic fluctuations.

3. Wide Adaptability to 18–26 Ton Excavators

Matches most brands: CAT, Komatsu, Hitachi, Kobelco, Doosan, Hyundai, LiuGong, XCMG, SANY, etc. Simple installation and debugging.

4. Energy Saving & High Efficiency

120–180 l/min oil flow matches medium excavators, reducing fuel consumption. 350–500 Bpm impact rate improves efficiency by 20–30% in municipal and renovation projects.

5. Heavy‑Duty Durability & Low Failure Rate

High‑strength components, advanced heat treatment, and strict assembly ensure stable performance in harsh conditions.

6. Safe & User‑Friendly Design

Anti‑blank firing, overload protection, and low vibration enhance safety for indoor, underground, and urban worksites.

Main Application Fields & Scenarios

The SB81A silent box type nitrogen hydraulic breaker is widely used in many fields with strict requirements for noise, space, vibration, and construction precision.

1. Municipal & Public Facility Maintenance

Sidewalk & Small‑Area Road Repair: Break concrete sidewalks, curbs, and damaged asphalt for patch repair.

Pipeline & Cable Trench Excavation: Break hardened soil and shallow rock for utility trenches.

Pipeline & Drainage Construction: Demolish concrete drainage ditches, pipe wells, and septic tanks; clear hardened blockages.

Urban Greening & Landscape Renovation: Break old flower beds, retaining walls, and small concrete foundations (light poles, billboards).

2. Building Decoration & Renovation

Interior & Exterior Wall Reconstruction: Demolish non‑bearing walls, concrete partitions, and widen door/window openings.

Floor & Tile Removal: Break bathroom/kitchen floor layers and old terraces without structural damage.

Small Foundation Demolition: Break equipment bases, steps, and canopy foundations.

Basement Local Demolition: Suitable for confined underground spaces.

Decoration Grooving & Drilling: Wall chases for pipelines with controlled vibration.

3. Landscaping & Farmland Water Conservancy

Rock Breaking & Land Leveling: Break field boulders and weathered rock for land preparation.

Tree Pit Excavation: Suitable for hard soil and soft rock.

Ditch & Pond Renovation: Break hardened ditch linings and repair small dams.

4. Traffic & Road Auxiliary Engineering

Highway Local Maintenance: Break guardrail foundations and bridge deck damage.

Tunnel Minor Repair: Compact size for narrow tunnel spaces.

Railway Maintenance: Clear track bed hardened blocks and repair drainage ditches.

5. Industrial & Commercial Sites

Factory Floor Renovation: Break old workshop concrete floors for replacement or grooving.

Equipment Demolition & Cleaning: Break small production line foundations and storage tank bases.

In all these scenarios, the SB81A provides high efficiency, low noise, low vibration, and safe construction.

Why Choose Guchuan Machinery SB81A Hydraulic Breaker?

Professional Manufacturer Experience: Established 2010, focused on hydraulic breakers, deep industry expertise.
Complete Product Range: Full series from small to ultra‑heavy duty, one‑stop procurement.
Independent R&D Capability: Auto‑variable frequency pure hydraulic & nitrogen technology, stable performance.
Strict Quality Control: High‑strength materials, precision machining, reliable quality.
Global Cooperation & Recognition: Partner with world‑famous brands, products sold worldwide.
Professional B2B Service: Customization, technical support, after‑sales, spare parts supply.
Cost‑Effective Solution: High performance, long life, low maintenance, high return on investment.

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