Custom Hydraulic Cylinder 340mm Bore 125mm Rod 686mm Stroke

Oem Install Hydraulic Cylinder Dust Cover Mast Move Hydraulic Cylinder 340 125-686 Hydraulic Cylinder Good Hydraulic Cylinders – We Make Sure Inside Parts
The tube follows GUOYUE CD250 style.
Tube steel can be 45#, 42CrMo, or 27SiMn.
Hole is ground to H8 and feels smooth, Ra under 0.4 μm.
Head, base, ears, and piston are only 45# steel.
We do not use cast iron or cast steel. Slow-Down Parts
You can pick fixed bumpers or floating bumpers so the rod slows down safe at any speed or load. Welds
We hit every heavy-load weld with ultrasound.
This takes away most of the stress and makes the weld last longer. Seals
We only use top seals from NOK (Japan), Trelleborg (Sweden), Merkel and GP (Germany).
We do not use local seals. Checks
Each cylinder is tested to GB/T15622-2005 and our own Q/GAKY014-2023.
You get a test sheet and a pass paper. Promise
We give one year cover from ship date.
If it breaks because of how we made it, we fix or swap it for free.
This cylinder is strong. It uses thick steel and hard rod. It does not bend. The seal keeps oil in, no leak. It has many tubes that slide out one by one. It lifts high but stays short Advantages:
It slips into the mast like it was born there, no shims, no drama. OEM fit means the bolts hug the flanges on the first try, saving your knuckles and your mood. That sneaky little dust cover is the umbrella that keeps grit from scratching the chrome, so every sunrise shift feels smooth instead of crunchy. Built tough with the same steel that rides inside mining shovels made-in-china.com , it just keeps shrugging off overloads and bad weather. In short, it’s the quiet teammate that lets you clock out early and still sleep like a baby. Application scenes:
Picture a rental yard at 5 a.m.: forklifts yawning awake, masts climbing to grab pallets before coffee even brews. Or a snowy logging road where a telehandler stacks timber while ice pings off the hood. This cylinder lives for those everyday heroics—mobile cranes folding their booms between city blocks, grain loaders filling silos under harvest moons, even ship-to-shore lifts kissing the dock. Anywhere the mast must rise, twist, and come home clean, it’s already there, keeping dirt out and dreams up.

item	value
Warranty	1 Year
Showroom Location	not have
Brand Name	Guoyue
Place of Origin	China
	Jiangsu
Pressure	1MPa
Structure	Y
Weight	500
Power	25MPa
Dimension(L*W*H)	950*406*406mm
Rod Diameter	125mm
Maximum Stroke	686mm
Outer Tube Diameter	406mm
Inner Tube Diameter	340mm
Product name	Hydraulic Cylinder
Material	Customized
Usage	Machinery