Soosan SB121 Hydraulic Breaker 155mm Chisel for 20–30T Excavator Rock Hammer

🌟 Product Features

• High single-strike energy: 155mm tool plus nitrogen accumulator delivers hard-rock breaking power that smaller-class hammers can't match.
• Hydraulic-nitrogen combined system: Return-stroke energy recovery boosts impact force while reducing carrier fuel consumption.
• Induction-hardened piston: HRC 55–60 surface resists deformation and peening under repeated heavy strikes.
• Forged alloy front head & body: High-strength 42CrMo construction withstands prying, edge work and side loads without cracking.
• Anti-blank firing protection: Piston auto-stops when contact is lost, preventing dry-fire damage to the piston face and front head bushing.
• Low recoil design: Nitrogen cushion absorbs rebound, protecting the excavator's front structure, pins and boom.
• Frequency adapts to material: Higher BPM in soft material; lower BPM with maximum per-strike energy in hard rock.
• Field-serviceable: Side-accessible fasteners and standard seal kits allow on-site tool, bushing and seal changes.
• Multiple tool options: Moil point, flat chisel, wedge and blunt tips for rock, concrete, asphalt and slag.
• Auto-lube compatible: Dedicated grease nipples on tool bushings; works with central lubrication systems.

🔍 Technology & Principle

1. Power stroke: Auxiliary-circuit pressure oil drives the piston forward; kinetic energy is transferred through the tool shank into the rock.
2. Nitrogen energy recovery: The accumulator compresses during the return stroke and releases stored energy on the next forward stroke — amplifying impact while lowering flow demand.
3. Self-regulating frequency: Impact rate automatically follows material resistance, preventing power waste and overheating in easy material.
4. Anti-blank firing valve: Mechanical sensing halts the piston when the tool loses contact, eliminating destructive dry firing.
5. Optimized load path: Box or cylindrical housing distributes axial and lateral loads through a continuous section, reducing stress concentration at the front head and side plates.
6. Low back-pressure tolerance: Reliable operation at return-line back pressure ≤10 bar matches standard 30–45T auxiliary circuits without extra valves.
7. Failure cascade prevention: Proper nitrogen charge, lubrication and clamping force keep blow-by, oil leakage and bushing wear from escalating into piston or cylinder failure.

🏗️ Applications

• Quarry & mine primary/secondary breaking: Reducing blasted oversize at the face and feeding primary crushers.
• Hard rock excavation: Granite, basalt, quartzite and limestone where blasting is restricted.
• Heavy demolition: Bridge piers, thick foundation mats, dams, dock walls and industrial structures.
• Tunnel & underground work: Face scaling, profile trimming and localized rock removal.
• Slag & steel mill breaking: Breaking slag skulls, ladle buildup and hardened spillage.
• Road & civil engineering: Concrete pavement removal, rock trenching and subgrade clearing.
• Dredging & marine work: Underwater-ready configurations for reef and rock clearance (specify).

🚀 Advantages

1. Breaks more tons per hour: High per-strike energy reduces pass count and cycle time on hard rock.
2. Carrier-matched: 200–300 L/min and ~3,200 kg suit 20–30T machines without overloading pumps or structures.
3. Lower fuel cost: Energy-recovery accumulator cuts flow demand vs. non-accumulator designs.
4. Longer component life: Hardened piston, forged head and quality seals extend rebuild intervals.
5. Less downtime: Field-serviceable design and stocked spare parts keep the machine working.
6. Versatile tooling: One breaker handles rock, concrete, asphalt and slag with tool swaps.
7. Cost-effective: 35–40% lower total cost vs. premium brands with comparable impact performance.

⚙️ Manufacturing Process

1. Material selection: Body, side plates and front head in high-strength alloy steel (42CrMo); piston and tool in alloy tool steel — spectrometry and ultrasonic verified.
2. Forging & fabrication: Hot-forged front head; precision-cut side plates; full-penetration welding of the housing.
3. Stress relief: Post-weld heat treatment removes residual stress to prevent frame cracking under cyclic impact.
4. CNC machining: Precision boring and turning hold bore, bushing seat and mounting tolerances within ±0.01 mm.
5. Heat treatment: Piston induction-hardened to HRC 55–60; tool tip hardened to HRC 58–62 for maximum wear resistance.
6. Surface treatment: Shot blasting plus anti-corrosion epoxy coating; optional sound-dampening pads for silenced versions.
7. Assembly: Clean-room assembly with torque-controlled fasteners and imported NOKKKKKKK/Nachi seals; nitrogen charging to spec.
8. 100% testing: Impact consistency, leakage, noise at 1 m, nitrogen hold pressure and endurance run before dispatch.

🤝 Company Services

• Global shipping: Air freight (3–5 days) or sea freight (15–25 days); export wooden crates with rust protection.
• 12-month warranty: Covers manufacturing defects and premature wear of piston, cylinder, housing, front head and nitrogen chamber.
• Technical support: 24/7 remote assistance for installation, hydraulic parameter setting, nitrogen charging and troubleshooting.
• Bracket customization: Pin spacing, ear width and bushing bore made to your arm dimensions; long-reach configurations available.
• Bulk & dealer pricing: Competitive rates for dealers, rental fleets, quarries and large-quantity orders.
• Spare parts supply: Seal kits, pistons, cylinders, front heads, tool bushings, accumulators, dampening pads, hoses and couplers.
• Core exchange & rebuild: Worn breaker cores accepted for cost-effective remanufacturing; on-site wear audits available.

❓ FAQ