SB40 Triangular Hydraulic Breaker 68mm Chisel – Side Type Hammer for Mini Excavator

Parameters / Specifications

All values are nominal. Custom configurations available for specific carrier models and working conditions.

Product Technology

The SB40 is manufactured using advanced CNC machining and precision heat treatment. The cylinder bore is diamond-honed to a mirror finish, reducing internal leakage and friction. The piston is forged from high-grade alloy steel and induction hardened to HRC 58–62, providing exceptional wear resistance and fatigue strength. The accumulator diaphragm is made from high-temperature resistant elastomer, tested for millions of cycles. All critical seals are sourced from premium brands to guarantee leak-free operation.

Product Applications

• Construction Demolition: Breaking concrete foundations, walls, and slabs.

• Road & Pavement Works: Opening asphalt and concrete surfaces for repair.

• Quarry & Mining: Secondary breaking of oversize boulders.

• Trenching & Excavation: Cutting through hardpan, frozen ground, and light rock.

• Landscaping & Site Prep: Removing boulders, tree stumps, and old concrete structures.

• Ideal Carriers: Bobcatttttt E45/E50, Kubota KX040/KX057, Yanmar ViO55, Takeuchi TB250, and similar 4–7 ton excavators.

Company Service

• Global Delivery: Fast, insured shipping via air, sea, or express courier to any job site or warehouse worldwide.

• OEM & Custom Branding: Laser-engraved logos, custom paint colors, and private-label packaging available.

• 24/7 Technical Support: Real-time installation guidance, troubleshooting, and maintenance advice via phone, email, or video call.

• Complete Spare Parts Inventory: Seal kits, chisels, retainer pins, bushings, and accumulator diaphragms stocked for immediate dispatch.

• 12-Month Warranty: Every SB40 breaker is covered by a one-year warranty against manufacturing defects.

• Bulk Discounts: Special pricing for fleet owners, distributors, and rental companies ordering multiple units.

FAQ – SB40 Triangular Hydraulic Breaker 68mm Chisel

Q1: Will the SB40 fit my mini excavator?
The SB40 is designed for excavators weighing 4.0–7.0 tons with auxiliary hydraulic flow of 40–70 L/min and working pressure between 110–150 bar. If your machine falls within this range and uses a standard pin-on coupler, it should be a direct fit. Contact us with your excavator make and model for a confirmed compatibility check.
Q2: What type of chisel should I use?
For penetrating hard rock and reinforced concrete, use a moil point chisel. For breaking softer, layered materials like asphalt, brick, or concrete slabs, choose a flat (blunt) chisel. Both types are available in 68mm diameter for the SB40.
Q3: How often should I grease the chisel?
Apply high-quality chisel paste every 2 hours of breaker operation, or every hour in dusty or abrasive conditions. Always press the chisel firmly against the ground while greasing to force fresh lubricant into the bushing contact area.
Q4: What nitrogen pressure should I maintain?
The correct nitrogen pre-charge for the SB40 is 14–16 bar. Check the accumulator pressure weekly using a dedicated nitrogen gauge. Low nitrogen pressure causes weak impact and slow blow frequency; high pressure can cause erratic operation and damage internal components.
Q5: Can the SB40 be used underwater?
The chisel tip may work in shallow water, but the breaker body must never be submerged. Water ingress will immediately damage seals and internal components. For continuous underwater demolition, a specialized submersible hammer is required.
Q6: What causes oil overheating when using the breaker?
Overheating typically results from operating the breaker at hydraulic flow or pressure higher than specified, a clogged filter in the excavator’s hydraulic system, or a stuck valve in the breaker circuit. Always match the excavator’s auxiliary settings to the SB40’s rated range and replace filters regularly.
Q7: How do I store the breaker when not in use?
Store the breaker upright with the chisel lightly pressed against a wooden block. Release all hydraulic pressure, cap the hoses, and apply a generous coat of grease to the chisel to prevent rust. If outdoor storage is necessary, cover with a waterproof tarp and ensure the breaker is not sitting in water.