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 :She’s the door-lock guardian who never slams. A slim 90 mm bore and 45-75R2 stroke snap the gate shut with the soft finality of a well-worn car door. Hard-chrome skin laughs off salt spray and grit, while synchronized twins move in perfect lockstep—no rattle, no twist. OEM fit means she bolts straight in like the missing puzzle piece, no shims, no midnight swearing. Day after day, she whispers, “I’ve got the latch,” and the whole rig sleeps tight.
Application scenes:Picture a riverside floodgate at dusk: twin cylinders breathe the doors closed, holding back the swollen river so townsfolk sleep dry. Or a bulk carrier’s hatch sealing tight before a storm, salt spray hissing on chrome. From mine shaft cages locking for the night to metallurgy ladles clicking shut over white-hot steel, she’s the quiet click that keeps danger outside and peace inside.
| Application | Engineering machinery, mine, shipping, metallurgy, water conservancy, offshore, agriculture, etc. |
| Seal | Parker, Merkel, NOK, Hallite,etc. |
| Paint | Red, Grey, Yellow, Black, etc. |
| Material | St52, CK45, 4140, Duplex2205, Stainless Steel 304/316, etc. |
| Certificate | ABS, Lloyds, SGS, etc. |
| Package | Bubble-wrap packing, then in wooden case. |
| Color | choose the color according to customer requirement |
| Core components | Bearing,Pressure vessel,Pump |
| Is it a standard part? | Nonstandard |
| Structure | Piston Type, Plunger Type, Telescopic Type, |
| Power | Hydraulic & Pneumatic |
| Brand | Guoyue |
| Sample | Available |
