Two-stage Telescopic Cylinder
The Two-stage Telescopic Cylinder is a specialized hydraulic cylinder designed with two telescoping stages, allowing it to achieve long strokes in a compact retracted length. Unlike conventional single-stage cylinders, the Two-stage Telescopic Cylinder extends sequentially, providing efficient lifting and pushing in limited space.
Built with seamless honed tubes and chrome-plated rods, the Two-stage Telescopic Cylinder ensures excellent durability, smooth extension, and high load-bearing capacity. Its unique design makes it ideal for dump trucks, trailers, cranes, and heavy machinery that require long extension but minimal mounting space. For distributors, stockists, and engineering contractors, this product offers a balance of strength, compactness, and cost-effectiveness.
Model:Telescopic Type
Brand:EAST AI
Product Description
Advantages of Two-stage Telescopic Cylinder
The Two-stage Telescopic Cylinder provides several key advantages over standard hydraulic cylinders:
Space-Saving Design
Achieves long strokes while maintaining a short retracted length.
Sequential Extension
Offers controlled, step-by-step movement for stable operation.
High Load Capacity
Built with strong materials to withstand heavy vertical and horizontal loads.
Versatility
Suitable for lifting, tilting, pushing, and compacting applications.
Durability
Manufactured from honed steel tubes and chrome rods for extended service life.
Reduced Maintenance
Fewer moving components reduce downtime and servicing costs.
Corrosion Resistance
Chrome-plated rods resist rust and wear in harsh environments.
Customizable Options
Available in various bore sizes, strokes, and mounting configurations.
Production Process of Two-stage Telescopic Cylinder
The Two-stage Telescopic Cylinder is manufactured through a strict, multi-step production process to ensure top performance:
Raw Material Selection
Premium ST52, CK45, 20MnV6, or 42CrMo steels.
Tube Honing
Internal honing of tubes ensures smooth surfaces with Ra ≤ 0.2 μm.
Rod Processing
Chrome-plated rods are machined, hardened, and ground for strength.
Stage Machining
Precision machining of each telescopic stage for seamless movement.
Welding & Assembly
Robotic welding guarantees strong, leak-free joints.
Seal Installation
High-performance seals (Parker, Hallite, NOK) prevent oil leakage.
Pressure Testing
Each cylinder is tested under 1.5 times the rated pressure.
Surface Coating
Painting, powder coating, or phosphating for corrosion protection.
Final Inspection
Dimensional checks, hardness tests, and cycle testing before shipment.
Applications of Two-stage Telescopic Cylinder
The Two-stage Telescopic Cylinder is widely used in industries requiring compact hydraulic lifting solutions:
Dump Trucks & Trailers
Lifting and tilting of heavy loads.
Cranes & Lifting Equipment
Long extension in limited mounting space.
Agricultural Machinery
Harvesters, sprayers, and grain handling systems.
Mining Equipment
Haul trucks, loaders, and underground lifting devices.
Marine Industry
Ship deck machinery and offshore hydraulic systems.
Industrial Equipment
Hydraulic presses, compactors, and material handling systems.
Product Details of Two-stage Telescopic Cylinder
Specification | Details |
Product Name | Two-stage Telescopic Cylinder |
Bore Size Range | 80 mm – 400 mm |
Stroke Length | Up to 6000 mm (customized) |
Working Pressure | Up to 300 bar |
Material | ST52 / CK45 / 20MnV6 / 42CrMo |
Rod Surface | Hard Chrome Plated, Induction Hardened |
Number of Stages | Two (sequential extension) |
Seal Brand | Parker / Hallite / NOK |
Temperature Range | -30°C to +120°C |
Mounting Options | Flange, Trunnion, Clevis, Eye Mount |
Standards | ISO 6022 / DIN / Custom |
Factory Inventory of Two-stage Telescopic Cylinder
To support global distributors and engineering firms, we maintain a strong inventory of Two-stage Telescopic Cylinder components:
Large stock of honed tubes and chrome rods in multiple sizes.
Pre-machined telescopic stages ready for final assembly.
Semi-finished cylinders available for custom orders.
Monthly output capacity of 12,000+ hydraulic cylinders.
Quick shipping solutions for urgent distributor demands.
This ensures steady supply and competitive delivery times for our partners worldwide.
Quality Inspection of Two-stage Telescopic Cylinder
Every Two-stage Telescopic Cylinder undergoes strict quality control:
Dimensional Accuracy
Bore size, rod diameter, and stage lengths are verified.
Surface Roughness
Honed finish inspected to Ra ≤ 0.2 μm.
Hardness Test
Rod hardness verified according to HRC requirements.
Pressure Testing
Each unit tested above its rated working pressure.
Welding Inspection
Ultrasonic and visual inspection for joint integrity.
Corrosion Resistance
Salt spray testing for chrome plating durability.
Cycle Testing
Simulated work cycles to ensure long service life.
Certificates of Two-stage Telescopic Cylinder
The Two-stage Telescopic Cylinder meets international standards and certifications:
ISO 9001:2015
Quality management system certification.
ISO 14001
Environmental compliance.
CE Certification
European machinery safety approval.
RoHS Compliance
Environmentally friendly material use.
DNV / GL / BV Approvals
Certifications for marine and offshore applications.