SB50 Straight Type Hydraulic Breaker – 100mm Chisel for 10-12t Excavator Heavy Duty

Key Specifications

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

Technology & Principle

The SB50 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 11–16T auxiliary circuits without extra valves.

Advantages

1. High single-strike energy: 100mm tool plus nitrogen-assisted design breaks hard rock and heavily reinforced concrete faster than smaller-class breakers.
2. Cylindrical body durability: Uniform stress distribution cuts housing cracks and extends structural life by up to 20%.
3. Carrier-matched performance: 90–140 L/min flow and ~1,040 kg weight suit 11–16T 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 straight-body structure, 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 applications.
7. Cost-effective: 35–40% lower total cost versus premium brands while maintaining comparable impact performance.

Company Services

• Global shipping: Air freight (3–5 days) or sea freight (15–25 days); breakers packed in export wooden crates.
• 12-month warranty: Covers manufacturing defects and premature wear of piston, cylinder, housing, and nitrogen chamber.
• Technical support: 24/7 remote assistance for installation, hydraulic parameter setting, and troubleshooting.
• Bracket customization: Pin spacing, bushing bore, and ear width made to your machine's arm dimensions.
• Bulk & dealer pricing: Competitive rates for dealers, rental fleets, and large-quantity orders.
• Spare parts supply: Seal kits, tool bushings, pistons, tools (moil/flat/wedge/blunt), and accumulator charging kits.
• Core exchange & rebuild: Return worn breaker cores for cost-effective remanufacturing.

FAQ

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

Q: What's the difference between straight-type and triangular-type breakers?
A: Straight (cylindrical) types distribute axial impact loads more evenly and are best for continuous heavy-duty rock breaking. Triangular (box) types resist side-load bending better and are preferred for prying and edge work. Choose based on your primary application.

Q: What tool should I use for hard granite?
A: Use a moil point for general hard-rock breaking and 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: What nitrogen charging pressure is correct?
A: Standard charging pressure is 8–12 kgf/cm² (0.8–1.2 MPa). Check every 250 hours. Too high means weak impact; too low causes excessive recoil and seal damage.

Q: Can I use this breaker on a wheeled excavator?
A: Yes, as long as the machine's auxiliary flow and pressure meet spec and its lifting capacity supports ~1,040 kg. We can supply a matching bracket and hose kit.

Q: What is the lead time?
A: In-stock units ship in 3–5 business days. Custom brackets or large orders require 10–15 business days.