Excavator bucket cylinder , arm cylinder and boom cylinder used on Kobelco excavator SK200/SK210/SK230/SK250/SK330/SK350/SK450

  • >=1 Pieces
    $10,000.00
Model Number:
SK200/SK210/SK230/SK250/SK330/SK350/SK450
Lead Time:
Quantity(Pieces) 1 - 1 >1
Est. Time(days) 45 Negotiable
Customization:
Customized packaging (Min. Order: 1 Pieces)
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Overview
Quick Details
Warranty:
1 Year
After Warranty Service:
Video technical support, Spare parts, Online support
Local Service Location:
None
Showroom Location:
None
Brand Name:
ETERNAL
Place of Origin:
China
Pressure:
Hydraulic
Structure:
Flange type
Certification:
CE
After-sales Service Provided:
Online support, Video technical support
Rod Diameter:
200
Maximum Stroke:
8000mm
Outer Tube Diameter:
630mm
Inner Tube Diameter:
500mm
Rod surface hardness:
HRC55-60
Rod chromating thickness:
35-50um
Work pressure:
25MPA
Test pressure:
31.5MPA
Supply Ability
Supply Ability:
1000 Piece/Pieces per Month
Packaging & Delivery
Packaging Details
seaworthy packing
Port
Shanghai Port
Lead Time :
Quantity(Pieces) 1 - 1 >1
Est. Time(days) 45 To be negotiated

 Hydraulic Cylinder used on Kobelco excavator 

Our hydraulic cylinder has been applicated on many kinds of excavators 

 

1.Main Description

 

ETERNAL company design and manufacture hydraulic cylinders for different excavators

 Including 

Bucket cylinder 

Arm cylinder 

Boom cylinder 

 

 

 

 

3. Manufacturing capability and cylinder size range 

 

1.Cylinder bore diameter :max Ø500mm 
2.Max stroke :8000mm
3.Max lifting capability :500 Tons 

 

 

4.Manufacturing and inspection 

 

4.1.Cylinder tube size and choice  

 

4.1.1   According to the cylinder pressure and inside diameter size ,different steel tube Would be choosed .

 

1.  ID ≤200mm , cold rolled precision seamless tube would be choosed 

2.  200mm≤ID ≤500mm , hot rolled seamless tube would be choosed 

 

 

4.1.2 Cylinder tube steel grade : SAE1020 , SAE1045 ,27SiMn , S355JR ,S355J2G3

St52-3 ,SUS304 ,SUS316L etc .  

4.1.3 Cylinder tube inside boring and honing , roughness R0.2-R0.3,

 

4.1.4 Cylinder tube inside chromating : if necessary ,tube inside chromating could be applied 

.

4.2  Piston rod  is a very important part for hydraulic cylinder .

 

4.2.1 Piston rod steel grade : SAE1045, 42CrMo4, SUS410 ,SUS420, SUS304, SUS316L 

 

4.2.2 Piston rod chromating and surface hardness .

        Eternal company ensure that every piece piston rod would be surface hardened before chromating ,

surface hardness is HRC55~60 , Chromating film thickness is 0.03~0.04mm if there is no other specific 

requirements .

 

4.3 Seal ring and O ring 

 

According to the customers requirements and working condition , eternal company would choose suitable 

seal ring kit , seal ring brand include :Parker , Merkel , NOK , Guangzhou Rubber institute , Taiwan brand etc . Eternal company would supply suitable seal solution for their customer so that hydraulic cylinder has more

 lifetime , easy maintenance and simple repairing .

 

4.4 Tube and flange welding 

 

 The welding on cylinder tube and flange would be Ultrasonic tested every time , the welding seam would be 

cleaned before machining .Eternal company ensure that every welding seam has no any leak during lifetime 

 

4.5 Assembly and pressure test

 

 

 

 4.6 Painting and storage 

  

Patents for our Hydraulic Cylinder