Hydraulic cylinder

pistonsingle-rodsteel

Product Overview The Single Rod Plunger Cylinder is a hydraulic actuator designed for high-capacity linear pushing and vertical lifting. The plunger rod slides directly in the cylinder barrel without an internal piston, providing a compact, robust design suited to heavy-duty vertical load applications. Constructed from seamless honed tubes and induction-hardened, hard chrome-plated rods, it delivers high wear resistance and a long service life. Typical uses include lifting platforms, hydraulic presses, metallurgical and construction machinery.

Model & Brand Model: Plunger Type. Brand: EAST AI.

Advantages

• Simple construction — fewer components reduce failure points and simplify maintenance.
• High load capacity — optimized for vertical heavy-duty lifting and pushing.
• Durability — induction-hardened, hard chrome-plated rods resist wear and corrosion.
• Cost-effective — lower production and maintenance costs versus piston cylinders.
• Compact footprint — suitable for installations with limited space requiring strong linear force.
• Customizable — available in multiple bore sizes, strokes, and mounting options.
• Leak-resistant seals — advanced sealing solutions minimize hydraulic fluid loss.
• Long service life — precision honed surfaces reduce friction and wear.

Production Process

• Material selection — high-grade steels such as ST52, CK45, or 42CrMo4.
• Tube processing — barrels honed to Ra ≤ 0.2 μm for optimal sealing.
• Rod processing — rods machined, induction-hardened, and hard chrome-plated.
• CNC machining — precision turning and milling for tight tolerances.
• Welding & end fittings — structural welding ensures mechanical strength.
• Seal installation — imported seals (Parker, Hallite, NOK) for reliability.
• Hydraulic testing — each unit tested at rated and overload pressures.
• Surface treatment — painting, phosphating, or powder coating as required.
• Final inspection — dimensional, surface roughness, and hardness checks before shipment.

Applications

• Construction machinery — lifts, scaffolding, concrete equipment.
• Metallurgical equipment — steel mills, smelting, foundries.
• Hydraulic presses — forging, stamping, metal forming.
• Material handling — lifting platforms, elevators, hydraulic lifts.
• Agricultural machinery — loaders, tipping mechanisms.
• Mining equipment — heavy-duty underground and surface lifting systems.
• Marine & offshore — ship lifting devices and offshore platforms.

Factory Inventory & Production Capacity

• Large stock of honed tubes across multiple bores.
• Extensive inventory of chrome-plated, hardened rods.
• Semi-finished plunger cylinders available for customization.
• Ready-to-ship units in common specifications.
• Monthly production capacity exceeding 10,000 hydraulic cylinders.
• Global logistics support for timely delivery.

Quality Inspection & Testing

• Dimensional inspection — bore, rod, and overall length verified for precision.
• Surface roughness check — honed finish measured to Ra ≤ 0.2 μm.
• Hardness testing — rod surface hardness checked to required HRC range.
• Hydraulic pressure testing — units tested at 1.5× working pressure.
• Welding inspection — ultrasonic checks for weld integrity.
• Corrosion resistance testing — chrome plating verified in salt spray chamber.

Certifications

• ISO 9001:2015 — quality management system.
• ISO 14001 — environmental management.
• CE — conformity with EU machinery directives.
• RoHS — compliance for materials and processes.
• DNV/GL/BV approvals — applicable for marine and offshore use.

Product Details (table) Product Name: Single Rod Plunger Cylinder
Bore Size Range: 40 mm – 400 mm
Stroke Length: Up to 6000 mm (customized)
Working Pressure: Up to 250 bar
Material: ST52 / CK45 / 42CrMo4
Rod Surface: Hard chrome plated, induction hardened
Seal Brand: Parker / Hallite / NOK
Temperature Range: -30°C to +120°C
Mounting Options: Flange, Clevis, Trunnion, Eye Mount
Application Type: Vertical load lifting / pushing
Standards: ISO 6022 / DIN / Custom Options

Technical Characteristics / Specifications

• Product Name: Single Rod Plunger Cylinder
• Model: Plunger Type
• Brand: EAST AI
• Bore Size Range: 40 mm – 400 mm
• Stroke Length: Up to 6000 mm (customized)
• Working Pressure: Up to 250 bar
• Materials: ST52 / CK45 / 42CrMo4
• Rod Surface: Hard chrome plated, induction hardened
• Seals: Parker / Hallite / NOK
• Temperature Range: -30°C to +120°C
• Mounting Options: Flange, Clevis, Trunnion, Eye Mount
• Standards: ISO 6022 / DIN / Custom Options