Hydraulic Cylinder Components & Accessories


Product Gallery


Our company supplies a complete range of hydraulic cylinder components and accessories.
All products are available in standard sizes and customized designs, ensuring the right fit for your application.
We recommend the best materials and processes based on your operating conditions, helping you achieve reliable performance and long service life.

Product Categories

CategoryProduct ItemCommon MaterialsManufacturing ProcessFunction & Application
Cylinder ComponentsHoned Tube45# Steel, 27SiMn, ST52Precision honing (Ra 0.2–0.4 μm), stress relief, grindingPre-finished raw tube with accurate inner diameter and surface finish, ready for cylinder assembly
Cylinder BarrelHoned Tube, 45# Steel, Stainless SteelPort machining, threading, welding, external machiningFinished barrel assembly with ports, mounting features, and honed inner bore for piston sealing
End Cap45# Steel, QT500, Forged SteelCNC machining, port threading, welding, dynamic balancingCloses the non-rod end, provides port connections, and withstands hydraulic pressure loads
Head Cap45# Steel, QT500, Stainless SteelPrecision boring, seal groove machining, guide mountingGuides and supports the piston rod, holds rod seals and wipers, ensures rod alignment
Piston Rod SeriesPiston Rod Blank45# Steel, 42CrMo, Stainless SteelTurning, grinding, stress relievingBase rod material before surface treatment
Hard Chrome Plated Piston Rod45# Steel, 42CrMoChrome plating (20–40 μm), polishing (Ra 0.1–0.2 μm), grindingCorrosion-resistant piston rod with high hardness (800–1000 HV), ready for assembly
Sealing SystemMain Seal KitNBR, PU, FKMPrecision molding, inspectionComplete kit ensuring leak-free operation
Piston SealNBR, PU, FKMCompression moldingPrevents internal fluid leakage between piston chambers
Rod SealNBR, PU, FKMPrecision molding, lip cuttingPrevents fluid leakage along piston rod
Wiper SealNBR, PUInjection molding, trimmingKeeps contaminants out of the cylinder
Guide Band / Support RingPTFE, Nylon, BronzeCNC machining, sinteringPrevents metal-to-metal contact, provides rod/piston support
Static Seal RingNBR, FKM, EPDMCompression molding, dimensional inspectionPrevents leakage in static sealing surfaces
Mounting PartsFlange45# Steel, Q235BLaser cutting, machining, weldingProvides rigid mounting interface
Clevis45# Steel, Forged SteelCNC machining, heat treatmentArticulated mounting connection for dynamic loads
Pin Shaft40Cr, 42CrMoTurning, heat treatment, grindingConnects clevis to equipment, withstands shear forces
Mounting BaseQ235B, 45# SteelLaser cutting, welding, machiningFixed mounting interface for hydraulic cylinder
Functional PartsCushioning / Buffer DeviceBronze, 45# SteelCNC turning, grindingProvides hydraulic buffering to ensure smooth deceleration at stroke ends, reduces impact, vibration, and protects equipment
Air Bleed ValveBrass, Stainless SteelCNC machining, threadingRemoves trapped air from cylinder or system
Exhaust DeviceBrass, Stainless Steel, Carbon SteelCNC machining, threading, heat treatmentReleases residual air or excess pressure, ensuring safe cylinder operation and preventing overload
Rod Protective CoverOil-Resistant Rubber, PUInjection molding, sewingProtects piston rod from dust, dirt, and corrosion
Position SensorStainless Steel HousingMachining, electrical testingNon-contact rod position measurement for smart control
Special ComponentsSensor-Integrated Piston Rod42CrMo, Stainless SteelPrecision machining, sensor embeddingEnables real-time rod position monitoring
High-Temperature SealsFKM, FFKM, MetalMolding, high-temp curingDesigned for applications above 200°C
Corrosion-Resistant Plated RodStainless Steel, Duplex SteelSpecial plating, polishingIdeal for marine and chemical environments

Key Features & Benefits

  • Precision Manufacturing
    • Honed tubes with H8–H9 tolerance and Ra 0.2–0.4 μm finish
    • Chrome-plated rods with high hardness (800–1000 HV)
    • End and head caps with CNC machining, port threading, and seal grooves
  • Quality Assurance
    • 100% pressure-tested end caps and head caps
    • Dimensional inspection for all sealing surfaces
    • Material certification available upon request
  • Customization Service
    • Standard and custom components available
    • Built-to-print production based on drawings and specifications
  • Engineering Support
    • Expert recommendations on materials, seals, and finishes
    • Technical consultation for application-specific requirements

JW Hydraulic

JW HYDRAULIC is a leading Asia-based manufacturer of hydraulic cylinders and precision components, delivers 
custom-engineered solutions for maritime, offshore, metallurgy, mining, and construction sectors. Renowned for rigorous quality control, their products undergo extensive testing to meet stringent international certifications (ABS, Lloyd’s, DNV), ensuring exceptional durability and performance in the most demanding operating conditions. With a strong focus on innovation and engineering excellence, we continues to advance our expertise in hydraulic systems, providing high-performance, reliability-driven solutions for global industrial applications.

Question

Contact Us

  • Mobile: +86 15021927761
  • Tel: +86 21 6266 1492 | 6266 1496 | 6266 6697
  • Headquarters: info@jwgroup.cc
  • Sales manager: jane.wang@jwgroup.cc
  • Add: No. 2299, Xiangjiang Road, Shanghai 201804, China

Office Hour

  • Monday – Friday: 9:00 AM – 6:00PM

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