Oem Front and Rear 50ES Are Equipped with Buffer Displacement Sensors 100 70-80 Hydraulic Cylinders 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 gentle giant who never slams the door. 50ES buffers at both ends catch the piston like a mum’s soft hands, so there’s no clang, no spilled coffee—just a sigh of relief. Whisper-quiet sensors track every millimeter, telling the brain exactly where the load lives, so the arm stops on a dime instead of on your nerves. OEM fit means she slides straight into the frame like she’s always belonged, no shims, no drama. From sunrise to overtime, she hums, “Relax, I feel every move,” and suddenly the operator’s heartbeat slows. Application scenes :
Picture a city sunrise: a glass-panel lifter glides up a tower, each pane kissing the wall without a shudder. Or a logging truck’s knuckle-boom stacking timber by a misty river, the arm folding away like a polite guest. From surgical tables that cradle patients like babies to stage rigs floating starlight over concert crowds, this cylinder is the quiet choreographer. Wherever grace under pressure matters more than brute force, she’s already there, counting every quiet millimeter so people can breathe easier.

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