4436678 4418067 4418068 EX2500-5 -6 arm EX2600 bucket hydraulic cylinder komatsu

Komatsu hydraulic cylinder

Part no.

EX2500  EX2600  

boom cylinder  4436678

arm cylinder  4418067

bucket cylinder  4418068

 hydraulic cylinder

Our warranty policy:

1 Complete Hydraulic Cylinder Rebuild – Guaranteed for 3000 workmanship hours or 6 months, whichever comes first.

2 Any exchanged component or new cylinder –

Guaranteed for 5000 hours or 1 year, whichever comes first.

3 Claims must be submitted within 30 days of failure, or they will be subject to rejection.

we will test every cylinders before sending out :

any failure below will be find out  :

1) excessive vibration

2) high fluid temperature

3) control loss

4) noisy

5) leakage

6) low pressure

7) unoperative

8) over heat 

we use high quality raw materials  as  below :

rod eye---CK45

rod  shaft---AISI 4140    55-60 HRC  induction and chrome

barrel eye---ck45

flange---st52

tube---st52   roughness ra0.25

piston---AISI4140

gland-----AISI 4140

cushion sleeve---AISI4140

lock nut----AISI4140

we control  every processure of production very strictly.

for example : rod as quality control :

check the rod visually :

check for damages, cracks, and scratches on the chrome surface.