Dozer Cylinder

Bore diameter: Φ55mm – Φ145mm

Rod diameter: Φ30mm – Φ85mm

Stroke: ≤260mm

Operating pressure: continuous 25MPa, max 30MPa

Max push force: 480kN (at 30MPa)

Max pull force: 220kN (at 30MPa)

Breakaway pressure: ≤0.4MPa

Piston velocity: 0.08 – 0.6 m/s (dependent on system flow)

Operating frequency: up to 15 cycles/min (continuous dozing)

Internal leakage: ≤0.04 ml/min (at rated pressure, throughout seal life)

Temperature range: -30℃ to +120℃ (standard); customizable -50℃ to +200℃

Suitable for: 1.5–10 ton mini excavators

Impact-Resistant Durability

High-strength quenched and tempered alloy steel barrel, double-inspected welds (UT+MT), and hard chrome plated/polished piston rod. Fatigue life exceeds 2 million dozing cycles under frequent reversing shocks.

Ultra-Low Breakaway

Low-friction polyurethane/NBR seal combination ensures breakaway under 0.4MPa, delivering smooth blade touchdown and zero stick-slip, which improves machine stability during fine grading.

All-Round Corrosion Protection

Multiple rod surface finishes available: hard chrome, Ni/Cr plating, ceramic thermal spray, laser cladding, QPQ nitriding — keeping the rod free from rust and pitting in mud, de-icing salt, and coastal salt spray.

Built-In End Cushioning

Progressive cushion rings at both ends absorb shock during blade raise and lower, reducing stress on the blade linkage and frame, noise levels, and vibration, while maintaining fast response.

Smart Sensing Ready

Prepared for embedded linear displacement sensors for closed-loop blade height control with ±0.2mm accuracy, providing position feedback for assist grading and autonomous operation.

Integrated Hydraulic Valves

Easy integration of counterbalance valves, dual pilot-operated check valves, and orifice throttles. The blade holds position safely even in the event of hose burst. Pre-plumbed hose/tube assemblies available for plug-and-play.

Maintenance-Free Pivots

Standard self-lubricating composite bushings in both rod-end and base-end forgings eliminate grease fittings, resist wear and corrosion. Optional spherical bearings or hydrostatic bushings for misalignment and larger articulation.

Ultra-low temperature seals (-50℃ to +100℃)

Full stainless steel body + ceramic piston rod (extreme corrosion)

Built-in displacement sensor (analog/digital output)

Explosion-proof and mining certifications

Special mounting dimensions and port configurations

High-frequency duty upgrade (up to 25 cycles/min)