Oem Front and Rear 30ES Equipped with Buffer 50 28-100 Cylinder Hydraulic Double Acting Cylinder Hydraulic Bidirectional hydraulic control for precision applications Advantages:
She’s the calm handshake between brute force and fingertip finesse. Double-acting muscles push and pull with equal grace, while the 30ES buffers at both ends kiss away the jolt—no clang, no spilled coffee, just velvet stops. Bidirectional control lets you feather the load into place as if you’re nudging a sleeping child. OEM fit means she arrives ready to marry your machine, no dowry of shims or swear words. From first shift to the thousandth, she keeps whispering, “Easy does it,” saving nerves, metal, and money in one sweet breath. Application scenes:
Imagine a glass-panel installer on a windy city street: the manipulator’s arm swings forward, kisses the pane, then retreats a hair’s breadth—no cracks, no heart attacks. Or picture a foundry robot flipping scorching castings; the buffers let it stop on a dime without shaking the molten river inside. CNC press brakes, surgical lifting tables, even theme-park animatronics rely on this gentle giant. Anywhere a load must dance in tight shoes—stop, go, breathe—this cylinder is already humming the tune. 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

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