SB40 Hydraulic Hammer For Mini Excavator 68mm Compact Rock Breaker

Our premium SB40 hydraulic hammer for mini excavator is a durable SB40 small excavator rock breaker and compact SB40 side type hydraulic breaker. Engineered as a reliable mini excavator concrete demolition hammer, versatile SB40 excavator breaker attachment, efficient compact hydraulic breaker for 4-7 ton excavator and genuine OEM SB40 breaker assembly, this lightweight breaker is designed for 4–7 ton mini excavators and skid steer loaders, delivering high-frequency impact for tight-space construction and demolition projects. It features an open triangular side frame with reinforced steel plates, offering easy maintenance access, excellent heat dissipation and strong lateral force resistance. Adopting an advanced hydraulic-gas combined power system with a built-in nitrogen accumulator, it maximizes impact energy while minimizing hydraulic load on compact carriers. This OEM SB40 breaker assembly matches all mainstream 4–7 ton mini excavator mounting brackets, supporting quick hitch installation and plug-and-play hydraulic connection. Equipped with a 68mm high-strength 42CrMo chisel and precision-honed cylinder body, it delivers consistent breaking performance in municipal repair, landscaping, indoor demolition and rural construction sites. Every unit undergoes 100% full-load testing and pressure inspection before delivery, ensuring long-term reliability and low maintenance costs.

Technical Specifications

Manufacturing Process

• Frame Fabrication: CNC cutting of Q345B thick steel plates, automatic welding of triangular side plates, post-weld stress relief treatment.
• Cylinder Forging: High-strength alloy steel billet forged by 2000-ton hydraulic press to form cylinder blanks.
• Precision Machining: Deep hole boring, honing and grinding to achieve high-precision inner hole and matching dimensions.
• Heat Treatment: Quenching and tempering of cylinder and piston to achieve optimal hardness and toughness.
• Seal Assembly: Installation of imported high-performance seals, piston and accumulator components.
• Complete Assembly: Assembly of frame, cylinder, chisel and hydraulic pipeline components.
• No-Load Debugging: Hydraulic system debugging and no-load test run.
• Full-Load Testing: 100% 2-hour continuous full-load impact test to ensure stable performance.

FAQ

Guangzhou Liantuo Machinery Trading Company is a professional cross-border supplier specializing in full-series excavator and construction machinery spare parts. We cover a complete product range, including hydraulic parts, undercarriage components, engine core parts, electrical control parts, slewing and traveling parts, repair kits, attachments and wear-resistant parts. Adhering to strict quality control principles, we cooperate with certified domestic original manufacturers, implementing full-process quality inspection from raw material selection to finished product testing. All products comply with international standards, featuring strong compatibility and long service life. With original-quality and cost-effective products, we help global clients reduce equipment maintenance costs and downtime losses.

Equipped with a professional technical team and complete model database, our products fully support mainstream brands including CAT, Komatsu, Hitachi, Kobelco, Doosan, Hyundai, Sany, XCMG and LiuGong. We efficiently meet diverse procurement needs for daily maintenance parts, overhaul kits, emergency spare parts and custom parts for special working conditions, providing accurate model matching and professional technical guidance. We solve common cross-border procurement pain points such as mismatched parts and long delivery cycles, ensuring stable operation of client equipment.

Upholding the philosophy of "Quality First, Customer Oriented, Integrity Management, Long-term Win-win", we export products to more than 60 countries and regions across Southeast Asia, the Middle East, Africa, South America, Europe and Oceania. We provide one-stop cross-border services including timely quotation, efficient logistics, customs clearance guidance and after-sales technical support. We aim to be a reliable global construction machinery spare parts partner, helping clients cut procurement costs and achieve win-win cooperation.