Hydraulic cylinder

with piston roddouble-actingsteel

Product Overview
The Welded Type Double Acting Hydraulic Cylinder is a compact hydraulic solution designed for heavy-duty applications. Manufactured with welded end caps and a seamless barrel, this cylinder offers increased structural strength, reduced leakage risk and longer service life compared to tie-rod designs. Its double-acting configuration transmits force on both extension and retraction strokes, with optimized sealing systems, hardened chrome-plated rods and controlled production processes. Common uses include construction machinery, material handling, agricultural equipment and industrial installations.

Model / Brand

• Model: Welded Type
• Brand: EAST AI

Advantages

• Compact design: welded construction reduces overall dimensions while maximizing strength.
• High pressure capacity: suitable for demanding environments with pressures up to 300 bar.
• Durability: seamless honed tubes and chrome-plated rods resist wear and corrosion.
• Leak-free performance: welded end caps eliminate potential leakage paths.
• Efficiency: double-acting function enables full power in both strokes.
• Low maintenance: long-lasting seals and quality components reduce service intervals.
• Customization: bore sizes, stroke lengths, mounting styles and ports can be tailored to requirements.

Production Process

• Raw Material Selection: high-grade seamless steel tubes and alloy steel rods are sourced.
• Tube Processing: cold-drawn and honed tubes provide accurate internal surface finish.
• Rod Processing: precision-machined rods are chrome plated for hardness and corrosion protection.
• Welding of End Caps: cylinder ends are welded for maximum strength and leak resistance.
• Machining: precision boring and threading ensure exact tolerances.
• Seal Assembly: high-performance seals are installed for long-lasting operation.
• Pressure Testing: each cylinder is tested under working conditions to ensure zero leakage.
• Surface Treatment: painting, phosphating or powder coating for enhanced corrosion resistance.
• Final Inspection: dimension checks, hardness tests and performance validation before shipment.

Applications

• Construction Equipment: excavators, bulldozers, loaders, backhoes.
• Agricultural Machinery: harvesters, tractors, seeders, sprayers.
• Material Handling: forklifts, cranes, lifts, presses.
• Mining & Tunneling: drilling machines and underground transport equipment.
• Industrial Equipment: press machines, steel mills, automation systems.
• Marine & Offshore: deck machinery, winches, ship steering systems.

Product Details
Specification — Details
Product Name: Welded Type Double Acting Hydraulic Cylinder
Bore Size Range: 25 mm – 500 mm
Stroke Length: Up to 6000 mm (customizable)
Rod Diameter: 12 mm – 300 mm
Working Pressure: Up to 300 bar
Material: ST52 / CK45 / 42CrMo4
Surface Finish: Chrome plated rod + painted cylinder body
Seal Brand: Hallite / Parker / NOK (optional)
Temperature Range: -30°C to +120°C
Mounting Options: Clevis, Trunnion, Flange, Lug, Eye, Foot Mounting
Standard: ISO 6020/6022, DIN, or Custom

Factory Inventory

• Ready-to-ship cylinders in standard bore sizes and strokes.
• Stock of honed tubes and chrome-plated rods for rapid assembly.
• Dedicated warehouse for finished cylinders with protective packaging.
• Production capacity of 10,000+ cylinders per month for bulk orders.

Quality Inspection

• Dimensional Inspection: bore, rod and stroke accuracy checked with calibrated instruments.
• Surface Roughness Testing: ensuring smooth honed tube finish for optimal seal life.
• Hardness Testing: rod hardness (HRC) and tube strength verified after heat treatment.
• Welding Inspection: ultrasonic and X-ray tests to detect internal welding defects.
• Pressure & Leakage Test: cylinders tested under full load for sealing performance.
• Salt Spray Test: corrosion resistance of chrome-plated rod is validated.

Certificates

• ISO 9001:2015 (Quality management system)
• ISO 14001 (Environmental management)
• CE Certification (Compliance with European safety standards)
• RoHS Compliance (Environmental and safety compliance)
• DNV / GL / BV Approvals (optional for marine and offshore applications)

Caractéristiques / Spécifications techniques

• Bore size range: 25 mm – 500 mm
• Stroke length: Up to 6000 mm (customizable)
• Rod diameter: 12 mm – 300 mm
• Working pressure: Up to 300 bar
• Materials: ST52 / CK45 / 42CrMo4
• Surface finish: Chrome plated rod and painted cylinder body
• Seal options: Hallite / Parker / NOK (optional)
• Operating temperature: -30°C to +120°C
• Mounting options: Clevis, Trunnion, Flange, Lug, Eye, Foot
• Standards: ISO 6020/6022, DIN or custom