Soosan SB43 Concrete Breaker Attachment 68mm Chisel Hammer for 6-9T Excavator

Soosan SB43 Concrete Breaker Attachment | 68mm Moil Point Hydraulic Rock Hammer for 6–9 Ton Excavators & Skid Steers

• Triangular box-section housing: Three-sided box frame spreads impact and side loads uniformly, resisting bending and cracking better than open-type designs.
• Hydraulic-nitrogen combined system: Nitrogen accumulator recovers return-stroke energy, raising per-strike impact force while lowering oil consumption.
• Induction-hardened piston: Surface hardness HRC 55–60 resists deformation under repeated high-energy strikes.
• 68mm forged alloy tool: Through-hardened moil point concentrates force for rapid penetration of reinforced concrete and medium-hard rock.
• Anti-blank firing protection: Automatically halts the piston when the tool loses contact with material, preventing dry-fire damage to the piston face and front head.
• Low recoil & vibration: Nitrogen cushion absorbs rebound energy, protecting the carrier's front attachment and reducing operator fatigue.
• High duty cycle: Designed for continuous demolition and quarry work; tool bushings reach 800–1,000 hour service intervals.
• Easy field maintenance: Side-accessible bolts and standard seals allow on-site tool and bushing changes with basic hand tools.
• Grease lubrication points: Dedicated nipples on tool bushings; compatible with auto-lube systems for consistent lubrication.

The SB43 runs on a hydraulic-nitrogen combined impact principle:

1. Power stroke: Pressurized oil from the excavator's auxiliary circuit enters the cylinder chamber, driving the piston forward to strike the tool shank at high velocity.
2. Nitrogen energy recovery: The nitrogen accumulator compresses during the return stroke, storing kinetic energy and releasing it on the next forward stroke — amplifying impact energy while cutting required flow.
3. Auto-frequency regulation: Impact rate self-adjusts to material resistance — higher BPM in softer material, lower BPM with greater per-strike energy in hard rock.
4. Anti-blank firing valve: A mechanical sensing system detects loss of contact and stops the piston, eliminating destructive dry firing.
5. Precision piston fit: Piston-to-cylinder clearance held within ±0.015 mm minimizes internal leakage and keeps power consistent over long shifts.
6. Low back-pressure tolerance: Reliable operation with return-line back pressure ≤10 bar, compatible with standard 6–9T auxiliary circuits without extra valves.

1. High single-strike energy: 75mm tool plus nitrogen-assisted design breaks reinforced concrete and medium-hard rock faster than smaller-class breakers.
2. Triangular body durability: Box-section frame cuts stress concentration and housing cracks, extending structural life by up to 20%.
3. Carrier-matched performance: 60–100 L/min flow and ~650–700 kg weight suit 6–9T machines without overloading pumps or structures.
4. Fuel efficient: Lower flow demand reduces carrier fuel consumption during extended breaking cycles.
5. Low maintenance cost: Simple box-body structure, accessible seals, and standard 75mm tools keep running costs down.
6. Versatile tooling: Moil, flat, wedge, and blunt tools cover rock, concrete, asphalt, and prying applications.
7. Cost-effective: 35–40% lower total cost versus premium brands while maintaining comparable impact performance.

1. Material selection: Cylinder body in high-strength alloy steel (42CrMo); piston and tool in alloy tool steel — verified by spectrometry and ultrasonic testing.
2. Forging: Hot forging at 1,100–1,200 °C creates uniform grain flow in the triangular body, eliminating internal porosity.
3. CNC machining: Precision boring and turning hold cylinder bore and mounting tolerances within ±0.01 mm.
4. Heat treatment: Piston induction-hardened to HRC 55–60; tool tip hardened to HRC 58–62 for maximum wear resistance.
5. Nitrogen chamber fabrication: Sealed accumulator formed by precision welding, then pressure-tested to 2× operating pressure.
6. Surface treatment: Shot blasting plus anti-corrosion epoxy coating for harsh job-site environments.
7. Assembly: Clean-room assembly with torque-controlled fasteners and imported NOKKKKK/Nachi seals.
8. 100% testing: Impact consistency check, leakage test, noise test (≤105 dB at 1 m), nitrogen hold test, and 500-cycle endurance run before dispatch.