Hyundai part no. 31N9-60111 cylinder ROD , JDF hydraulic cylilnder Hyundai excavator parts seal kits

We manufacture high quality hydraulic cylinder at lower cost.

We maintain quick response for various market.

Our quality control:

We focus on every part's quality and material:

Rod seal:

Superior quality named-brand seals improve a longer life and seal effect.

Tube:

skived&burnished or vertical honing tube assures the concentricity and straightness.

Rod:

Induction hardened prior to chrome plating enhances the surface hardness. Enhanced chrome plating improve corrosion resistence and anti-scratch performance.

Piston:High pressure piston sealing material.

Making cylinder that are worthy of your equipment.

You will be without worry, when the cylinder willinterchange completely with the originalon your equipment.

The cylinder that are worthy of your equipment mean higher work efficency and less downtime won't let you down.

Our packing for exportation:

We have drawing size for you to check, pls email me , i will send to you if you want to order:

JDF is completely in-house manufacturing by ourself, we have a big factory with 215000 square meters.

The machine include Skive Roller Burnishing Machines, Honing Machines, CNC Centers, Automatic welding machines, Grinders machine, Cylinder assembly& test benches, paining line.

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CYLINDERS STORAGE:

► Always store indoors fully retracted in a clean dry area.

► Chrome plated rod protruding from the cylinder must be protected against potential corrosive damage. Treat the entire

surface with a rust inhibitor such as grease.

► Smear the internal surfaces of eye/clevis bushes or bearings with grease to avoid corrosion.

► We recommend that single-acting cylinders be protected against corrosion by directly adding a rust inhibitor oil to the unpressurized chamber.

► Hydraulic cylinders may be stored full of oil however a relief valve shall be installed on the cylinder port to allow for

fluid expansion caused by variations in ambient temperature.

► Under these conditions, cylinders can be stored up to 12 months provided that they have not yet been extended and retracted.

► After 12 months, cylinders must be inspected and commercially available preservative agents reapplied