Three-stage Telescopic Cylinder
The Three-Stage Telescopic Cylinder is a high-performance hydraulic cylinder specifically engineered for applications requiring long stroke within a compact installation space. Its telescopic design features three nested stages that extend sequentially, providing significantly longer extension than a conventional single-stage cylinder. Manufactured from seamless honed tubes and induction-hardened chrome-plated rods, the cylinder delivers exceptional strength, wear resistance, and durability. With double-acting or single-acting configurations available, the Three-Stage Telescopic Cylinder ensures smooth operation, high load capacity, and reliable performance in industries such as construction, mining, material handling, and transportation.
Model:Telescopic Type
Brand:EAST AI
Product Description
Advantages of Three-Stage Telescopic Cylinder
Choosing a Three-Stage Telescopic Cylinder brings several operational and economic benefits:
Compact retracted length
Ideal for equipment with limited space.
Extended stroke capability
Up to 3–4 times longer stroke compared to single-stage cylinders.
High load handling
Designed for heavy lifting and high-pressure environments.
Durability
Chrome-plated rods and precision seals extend service life.
Versatility
Available in both single-acting and double-acting configurations.
Leak-free design
Advanced sealing systems reduce leakage risks.
Customization
Tailored bore sizes, stroke lengths, and mounting styles to fit specific equipment.
Production Process of Three-Stage Telescopic Cylinder
The Three-Stage Telescopic Cylinder is manufactured through a precise and controlled process:
Raw Material Selection
Premium ST52, CK45, or alloy steels are used.
Tube Processing
Seamless tubes undergo cold drawing and honing for smooth internal finish.
Rod Processing
Chrome-plated rods are induction-hardened for corrosion and wear resistance.
Stage Assembly
Multiple telescopic stages are machined with precision to ensure smooth extension.
Seal Installation
High-performance seals from brands such as Parker, Hallite, or NOK.
Welding and Machining
End caps and mounting features are welded and machined to specifications.
Pressure Testing
Cylinders undergo hydrostatic pressure tests to ensure strength and leak-free operation.
Surface Treatment
Powder coating, phosphating, or painting for enhanced durability.
Final Inspection
Dimensional checks, hardness tests, and surface roughness validation.
Applications of Three-Stage Telescopic Cylinder
The Three-Stage Telescopic Cylinder is widely applied in industries requiring compact yet long-stroke hydraulic power:
Construction Machinery
Dump trucks, tippers, and loaders.
Mining Equipment
Underground transport, drilling rigs, and rock breakers.
Agricultural Machinery
Trailers, harvesters, and sprayers.
Material Handling
Cranes, forklifts, and lifting platforms.
Transport & Logistics
Garbage trucks, cargo lifts, and telescopic booms.
Industrial Systems
Press machines, automated systems, and marine equipment.
Product Details of Three-Stage Telescopic Cylinder
Specification | Details |
Product Name | Three-Stage Telescopic Cylinder |
Bore Size Range | 50 mm – 400 mm |
Stroke Length | Up to 7000 mm |
Number of Stages | Three (customizable design available) |
Working Pressure | Up to 300 bar |
Material | ST52 / CK45 / 42CrMo4 |
Rod Surface | Hard Chrome Plated, Induction Hardened |
Seal Brand | Parker / Hallite / NOK (optional) |
Temperature Range | -30°C to +120°C |
Mounting Options | Trunnion, Clevis, Flange, Eye, Lug Mounting |
Standard | ISO 6022 / DIN or Custom |
Factory Inventory of Three-Stage Telescopic Cylinder
We maintain a large inventory of Three-Stage Telescopic Cylinder components and semi-finished products to ensure quick assembly and shipment:
Ready stock of honed tubes and chrome rods in standard sizes.
Semi-finished telescopic cylinder stages for fast customization.
Finished cylinders in popular models for immediate delivery.
Monthly production capacity of over 8,000 hydraulic cylinders.
Special packaging to protect cylinders during storage and transit.
This ensures distributors, stockists, and engineers receive fast deliveries and reliable supply.
Quality Inspection of Three-Stage Telescopic Cylinder
Each Three-Stage Telescopic Cylinder undergoes strict inspection to ensure compliance with international standards:
Dimensional Tolerance Check
Bore, rod, and stroke dimensions validated.
Surface Roughness Test
Honed tubes tested for seal compatibility.
Hardness Test
Rods tested after heat treatment to confirm wear resistance.
Welding Inspection
Ultrasonic and X-ray examination for welding strength.
Hydraulic Pressure Test
Each cylinder is tested at rated pressure to ensure no leakage.
Salt Spray Test
Chrome-plated rod tested for corrosion resistance.
Certificates of Three-Stage Telescopic Cylinder
Our Three-Stage Telescopic Cylinders are certified by leading international standards:
ISO 9001:2015
Quality management certification.
ISO 14001
Environmental compliance.
CE Certification
Ensures compliance with EU safety directives.
RoHS Compliance
Non-toxic and environmentally safe production.
DNV / GL / BV Approvals
Marine and offshore use certifications.
