Crane Hydraulic Cylinder
Product Overview
Crane Hydraulic Cylinder is a heavy‑duty customized Hydraulic Cylinder, the core executive power component for all types of lifting Machine. It is an indispensable part of the complete crane hydraulic system, responsible for boom luffing, boom telescoping, outrigger stretching and counterweight locking. This heavy‑load Hydraulic Cylinder bears alternating huge load, frequent impact and outdoor complex working conditions for a long time. With high‑strength structural design and heavy‑duty sealing configuration, it ensures stable load holding and operation safety. It is widely used for original equipment matching, equipment renovation and aftermarket spare‑parts replacement of lifting construction Machine.
Technical Specifications
- Model: Crane Hydraulic Cylinder
- Product Category: Heavy‑duty engineering Hydraulic Cylinder, including luffing cylinder, telescopic cylinder, outrigger cylinder, counterweight cylinder
- Structure: Double‑acting piston cylinder, multi‑stage telescopic optional
- Rated working pressure: 16 ~ 35 MPa, test pressure 1.5 times rated pressure
- Bore range: 80 mm ~ 500 mm; Rod diameter: 50 mm ~ 360 mm
- Stroke: Customized 200 mm ~ 12000 mm
- Working medium: Anti‑wear hydraulic oil for engineering hydraulic system
- Working temperature: -30℃ ~ +90℃
- Cylinder barrel: 27SiMn high‑strength seamless alloy steel tube
- Piston rod: High‑frequency quenched + thick hard chrome plating, optional QPQ anti‑corrosion treatment
- Feature: Strong anti‑buckling & anti‑fatigue capacity, built‑in stroke end buffer, heavy‑dustproof sealing, excellent pressure holding, low internal leakage, perfectly matched with the hydraulic system of lifting Machine
- Applicable equipment: Truck crane, crawler crane, all‑terrain crane, tower crane and other lifting Machine
Working Principle
High‑pressure hydraulic oil output from the crane main hydraulic system enters the rod chamber and rodless chamber of this Hydraulic Cylinder. Under hydraulic thrust, the piston rod extends or retracts to complete boom lifting & lowering, boom extension & retraction, outrigger expansion and retraction of lifting Machine. Matched with balance valve and hydraulic lock, the cylinder locks the oil circuit reliably to prevent load falling accidentally. This Hydraulic Cylinder converts hydraulic energy into powerful mechanical force, guarantees stable hoisting operation, and effectively avoids overload damage to the whole hydraulic system of construction Machine.
Core Advantages
1. Optimized heavy‑load mechanical structure, outstanding anti‑impact and anti‑fatigue performance, adapts to long‑term cyclic heavy‑load operation of crane Machine.
2. Multi‑layer combined heavy‑duty sealing system greatly reduces internal and external leakage, maintains stable pressure holding performance of the hydraulic system under static hoisting condition.
3. Thick chrome‑plated piston rod with anti‑rust coating, good wear resistance and outdoor corrosion resistance, prolongs service life of the Hydraulic Cylinder.
4. Built‑in buffer structure eliminates stroke‑end impact, reduces vibration of the whole crane and protects the service life of the complete hydraulic system.
5. Support full customization of installation dimensions, bore, stroke and interface; standard mounting size for mainstream crane brands, convenient for on‑site maintenance and spare‑parts replacement.
Application Range
Crane Hydraulic Cylinder is the key driving component of lifting Machine. It undertakes core hoisting and stabilizing functions inside the crane hydraulic system. Widely supplied for crane OEM manufacturers, engineering machinery repair yards and global aftermarket spare‑parts business for construction hoisting industry.
