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Double Acting Plunger Cylinder

The Double Acting Plunger Cylinder is a robust hydraulic cylinder designed to deliver linear force in both extension and retraction strokes. Unlike single-acting plunger cylinders, the Double Acting Plunger Cylinder uses hydraulic pressure alternately on both sides of the plunger rod, providing controlled bidirectional motion. This feature makes it highly suitable for applications that require frequent pushing and pulling under heavy loads.

Manufactured from seamless honed tubes and chrome-plated rods, the Double Acting Plunger Cylinder provides excellent wear resistance, high strength, and extended service life. Its simple yet durable design reduces the risk of failure and minimizes maintenance downtime, making it a preferred choice for distributors, stockists, and engineering contractors in industries such as construction machinery, hydraulic presses, marine equipment, and material handling systems.

  • Model:Plunger Type

  • Brand:EAST AI

Product Description

Advantages of Double Acting Plunger Cylinder

The Double Acting Plunger Cylinder offers numerous benefits compared to single-acting or piston-type cylinders:


Bidirectional Force


Provides power in both directions, improving efficiency.


Durable Structure


Built with high-quality steel, honed tubes, and chrome-plated rods.


High Load Capacity


Withstands heavy-duty vertical and horizontal loads.


Smooth Operation


Precision honing ensures excellent sealing and low friction.


Reduced Maintenance


Fewer components minimize wear and breakdown risk.


Corrosion Resistance


Hard chrome plating protects against rust and abrasion.


Customizable Design


Available in multiple bore sizes, strokes, and mountings.


Energy Efficiency


Optimized design reduces hydraulic power loss.


Production Process of Double Acting Plunger Cylinder

The Double Acting Plunger Cylinder is manufactured under strict quality control standards. The production steps include:


  1. Raw Material Selection


    High-grade steels such as ST52, CK45, 42CrMo, or 20MnV6.


  2. Tube Honing


    Seamless tubes are honed to Ra ≤ 0.2 μm for superior sealing.


  3. Rod Processing


    Plunger rods undergo machining, induction hardening, and chrome plating.


  4. Precision Machining


    CNC machining ensures accurate dimensions and tolerances.


  5. Assembly


    End caps, seals, and rods are assembled to ensure structural integrity.


  6. Seal Installation


    Premium sealing systems (Parker, Hallite, NOK) prevent leakage.


  7. Pressure Testing


    Every cylinder is tested at 1.5 times its rated working pressure.


  8. Surface Treatment


    Painting, phosphating, or powder coating for corrosion resistance.


  9. Final Inspection


    Dimensional checks, hardness tests, and surface finish evaluations.



Applications of Double Acting Plunger Cylinder

The Double Acting Plunger Cylinder is widely used across various industries due to its high performance and bidirectional force capability:


Construction Machinery


Excavators, loaders, concrete machinery, and lifting platforms.


Material Handling


Elevators, hoists, and hydraulic lift systems.


Hydraulic Presses


Metal forming, stamping, forging, and injection molding machines.


Marine Applications


Ship deck machinery, offshore platforms, and lifting devices.


Agriculture Equipment


Tractors, harvesters, and tipping systems.


Mining Industry


Heavy-duty lifting and pushing in underground and surface operations.


Industrial Equipment


Assembly lines, compacting machines, and automation systems.


Product Details of Double Acting Plunger Cylinder

Specification

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

Material

ST52 / CK45 / 42CrMo / 20MnV6

Rod Surface

Hard Chrome Plated, Induction Hardened

Seal Brand

Parker / Hallite / NOK

Temperature Range

-30°C to +120°C

Mounting Options

Flange, Trunnion, Clevis, Eye Mount

Application Type

Bidirectional load pushing and pulling

Standards

ISO 6022 / DIN / Custom Options


Factory Inventory of Double Acting Plunger Cylinder

Our factory maintains a strong inventory of Double Acting Plunger Cylinder components to ensure quick delivery and large-volume supply:


Stock of honed tubes in multiple diameters.

Chrome-plated rods available in various lengths and hardness levels.

Semi-finished cylinders for customized production.

Popular models kept in ready-to-ship stock.

Monthly production capacity exceeding 12,000 hydraulic cylinders.

Fast logistics solutions for global distributors and engineering firms.


This guarantees our partners stable supply chains and competitive advantages in their local markets.


Quality Inspection of Double Acting Plunger Cylinder

Each Double Acting Plunger Cylinder undergoes multiple inspections to guarantee performance and safety:


Dimensional Testing


Accuracy of bore, rod, and length.


Surface Roughness Check


Honed finish measured to Ra ≤ 0.2 μm.


Hardness Test


Chrome rod hardness verified according to HRC standards.


Hydraulic Pressure Test


Every unit tested under 1.5x working pressure.


Welding Inspection


Non-destructive ultrasonic testing for joint integrity.


Corrosion Testing


Salt spray chamber tests to confirm chrome plating resistance.


Certificates of Double Acting Plunger Cylinder

The Double Acting Plunger Cylinder meets international quality and safety standards:


ISO 9001:2015


Quality management system.


ISO 14001


Environmental compliance certification.


CE Certification


Compliance with EU machinery safety requirements.


RoHS Compliance


Use of environmentally friendly materials.


DNV / GL / BV Approvals


Certification for marine and offshore applications.


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