Hydraulic cylinder

with piston roddouble-actingsteel

Product Overview
The Double-Acting Plunger Cylinder delivers controlled bidirectional linear force for heavy-duty push and pull operations. Designed for frequent cycles under high loads, it features honed seamless tubes, induction-hardened and hard chrome-plated rods for wear resistance and long service life.

Model and Brand

• Model: Plunger Type
• Brand: EAST AI

Key Advantages

• Bidirectional Force: Provides power in both extension and retraction for efficient push/pull tasks.
• Durable Construction: High-grade steels and precision honing ensure structural integrity and low friction.
• High Load Capacity: Suitable for heavy vertical and horizontal loads.
• Smooth Operation: Fine tube surface finish improves sealing and reduces wear.
• Low Maintenance: Simple, robust design reduces component failure and downtime.
• Corrosion Resistance: Hard chrome plating protects rods against abrasion and rust.
• Customizable: Multiple bore sizes, strokes and mounting options for tailored installations.
• Energy Efficient: Optimized internal clearances to minimize hydraulic losses.

Production Process

• Raw Material Selection: ST52, CK45, 42CrMo or 20MnV6 steels used for components.
• Tube Honing: Seamless tubes honed to Ra ≤ 0.2 μm for superior sealing.
• Rod Processing: Machining, induction hardening and hard chrome plating of rods.
• Precision Machining: CNC machining for accurate dimensions and tolerances.
• Assembly: End caps, seals and rods assembled to ensure structural integrity.
• Seal Installation: Premium seals (Parker, Hallite, NOK) fitted to prevent leakage.
• Pressure Testing: Each cylinder tested at 1.5× rated working pressure.
• Surface Treatment: Painting, phosphating or powder coating for corrosion protection.
• Final Inspection: Dimensional checks, hardness tests and surface finish control.

Applications

• Construction machinery: excavators, loaders, concrete equipment, lifting platforms.
• Material handling: hoists, elevators, hydraulic lift systems.
• Hydraulic presses: metal forming, stamping, forging and molding machines.
• Marine & offshore: deck machinery, lifting devices and platform equipment.
• Agricultural machinery: tractors, harvesters and tipping systems.
• Mining: heavy pushing and lifting in surface and underground operations.
• Industrial machinery: assembly lines, compactors and automated systems.

Product Details

• Product Name: Double Acting Plunger Cylinder
• Bore Size Range: 50 mm – 400 mm
• Stroke Length: Up to 6000 mm (customized)
• Working Pressure: Up to 300 bar
• Materials: ST52 / CK45 / 42CrMo / 20MnV6
• Rod Surface: Induction hardened, hard chrome plated
• Seals: Parker / Hallite / NOK
• Temperature Range: -30°C to +120°C
• Mounting Options: Flange, trunnion, clevis, eye mount
• Standards: ISO 6022 / DIN / custom options

Factory Inventory

• Honed tubes in multiple diameters stocked.
• Chrome-plated rods available in various lengths and hardness levels.
• Semi-finished cylinders for customized production.
• Popular models kept in ready-to-ship inventory.
• Monthly capacity exceeding 12,000 hydraulic cylinders for large-volume supply.

Quality Inspection

• Dimensional testing for bore, rod and overall length accuracy.
• Surface roughness checks to Ra ≤ 0.2 μm.
• Hardness tests for chrome-plated rods per HRC specifications.
• Hydraulic pressure test at 1.5× working pressure for every unit.
• Welding inspection including non-destructive ultrasonic testing.
• Corrosion testing such as salt spray to verify chrome plating resistance.

Certificates

• ISO 9001:2015
• ISO 14001
• CE Certification
• RoHS Compliance
• DNV / GL / BV approvals for marine/offshore applications

Technical Specifications

• Bore size range: 50 mm – 400 mm
• Maximum stroke: Up to 6000 mm (customized)
• Working pressure: Up to 300 bar
• Materials: ST52, CK45, 42CrMo, 20MnV6
• Rod surface: Hard chrome plated, induction hardened
• Seals: Parker, Hallite or NOK
• Operating temperature: -30°C to +120°C
• Mounting: Flange, trunnion, clevis, eye mount
• Standards: ISO 6022, DIN and custom options