Soosan SB50 Straight-Type Hydraulic Breaker 100mm Rock Chisel for 10-12T Excavator

🔧 Key Specifications

⚠️ Note: Dimensions, weight, and performance data vary by production batch and mounting configuration. Confirm your machine's auxiliary flow/pressure and arm pin spacing before ordering.

🔍 Technology & Principle

The SB50 operates on a hydraulic-nitrogen combined impact principle:

1. Power stroke: Auxiliary-circuit pressure oil enters the cylinder, driving the piston forward to strike the tool shank at high velocity.
2. Nitrogen energy recovery: The accumulator compresses on the return stroke, storing and releasing energy on the next forward stroke — amplifying impact while lowering flow needs.
3. Self-adjusting frequency: Impact rate adapts to material resistance — higher BPM in soft material, lower BPM with greater per-strike energy in hard rock.
4. Anti-blank firing valve: Mechanical sensing halts the piston when contact is lost, eliminating destructive dry firing.
5. Precision piston fit: Piston-to-cylinder clearance held within ±0.015 mm minimizes internal leakage and keeps power steady.
6. Low back-pressure tolerance: Runs reliably at return-line back pressure ≤10 bar, matching standard 11–16T auxiliary circuits without extra valves.

🏗️ Applications

• Quarry & mine secondary breaking: Reducing oversize blasted rock at the face and near primary crushers.
• Heavy concrete demolition: Foundations, bridge piers, dams, and thick reinforced slabs.
• Road & highway work: Concrete pavement breaking, asphalt removal, tunnel invert demolition.
• Utility & pipeline trenching: Fracturing rock strata and hardpan for water, gas, electric, and fiber lines.
• Port & industrial demolition: Old docks, furnace foundations, machine bases, industrial floors.
• Frozen ground & permafrost: Breaking frozen soil in cold-region construction.
• Underground & tunnel work: Scaling, profile trimming, and localized rock removal.

🚀 Advantages

1. High single-strike energy: 100mm tool plus nitrogen assist breaks hard rock and heavily reinforced concrete faster than smaller-class breakers.
2. Cylindrical body durability: Uniform stress distribution reduces housing cracks, extending structural life by up to 20%.
3. Carrier-matched performance: 90–140 L/min and ~1,040 kg suit 11–16T machines without overloading pumps or structures.
4. Fuel efficient: Lower flow demand cuts carrier fuel use during long breaking cycles.
5. Low maintenance cost: Simple straight-body design, accessible seals, and standard 100mm tools keep running costs down.
6. Versatile tooling: Moil, flat, wedge, and blunt tools cover rock, concrete, asphalt, and prying.
7. Cost-effective: 35–40% lower total cost vs. premium brands with comparable impact performance.

⚙️ Manufacturing Process

1. Material selection: Cylinder body in high-strength alloy steel (42CrMo); piston and tool in alloy tool steel — spectrometry and ultrasonic verified.
2. Forging: Hot forging at 1,100–1,200 °C produces uniform grain flow in the cylindrical body, eliminating internal porosity.
3. CNC machining: Precision boring and turning hold 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 conditions.
7. Assembly: Clean-room assembly with torque-controlled fasteners and imported NOKKKK/Nachi seals.
8. 100% testing: Impact consistency, leakage, noise (≤105 dB at 1 m), nitrogen hold, and 500-cycle endurance run before dispatch.

❓ FAQ

Q: Will the SB50 fit my 13-ton excavator?
A: NO — it's designed for 10–12 ton machines. Confirm auxiliary flow of 90–140 L/min and pressure of 130–160 kgf/cm², then provide your arm pin spacing for bracket matching.

Q: Straight-type vs. triangular (box) type — which should I choose?
A: Straight (cylindrical) types distribute axial loads more evenly and excel at continuous heavy rock breaking. Triangular (box) types resist side-load bending better and suit prying/edge work. Choose by your primary application.

Q: Which tool for hard granite?
A: Use a moil point for general hard-rock breaking; choose a blunt or wedge tip for highly abrasive granite or splitting along natural planes. Flat chisels are best for concrete and asphalt.

Q: How often should I grease the tool bushing?
A: Every 2–3 working hours with NLGI #2 lithium grease; every 1–2 hours in dusty or wet conditions. Never run dry — it rapidly destroys the bushing, tool shank, and front head.

Q: Correct nitrogen charging pressure?
A: Standard is 8–12 kgf/cm² (0.8–1.2 MPa); check every 250 hours. Too high = weak impact; too low = excessive recoil and seal damage.

Q: Can I use it on a wheeled excavator?
A: Yes, provided auxiliary flow/pressure meet spec and the machine's lift capacity supports ~1,040 kg. We can supply a matching bracket and hose kit.

Q: What's the lead time?
A: In-stock units ship in 3–5 business days. Custom brackets or bulk orders take 10–15 business days.