Guaranteed Quality Proper Price Union-G Hydraulic Fittings For Hydraulic Cylinder Manufacturers

What Are The Hydraulic Fittings?

Hydraulic fittings are components used in hydraulic systems to connect, control, and direct the flow of hydraulic fluid. They are essential for creating leak-free connections between various hydraulic parts, such as hoses, tubes, pipes, and hydraulic cylinders.

The primary function of hydraulic fittings is to ensure a secure and reliable connection while allowing the transfer of hydraulic fluid under high pressure. These fittings are designed to withstand the demanding conditions of hydraulic systems, which involve high pressures, vibrations, and fluctuations in temperature.

	G Part NO.	Series Working Pressure (bar/psi)	Tube O.D.	l1	L1	S1	S2
	-G04LL	LL very light 100 bar 1450psi	4	12	31	9	10
	-G06LL		6	9	32	11	12
	-G08LL		8	12	35	12	14
	-G10LL		10	12	35	14	17
	-G12LL		12	11	35	17	19
	-G06L	L light 315 bar 4560psi	6	10	39	12	14
	-G08L		8	11	40	14	17
	-G10L		10	13	42	17	19
	-G12L		12	14	43	19	22
	-G15L		15	16	46	24	27
	-G18L		18	16	48	27	32
	-G22L	160 bar 2320psi	22	20	52	32	36
	-G28L		28	21	54	41	41
	-G35L		35	20	63	46	50
	-G42L		42	21	66	55	60
	-G06S	S heavy 630 bar 9130psi	6	16	45	14	17
	-G08S		8	18	47	17	19
	-G10S		10	17	49	19	22
	-G12S		12	19	51	22	24
	-G14S		14	22	57	24	27
	-G16S	400 bar 5800psi	16	21	57	27	30
	-G20S		20	23	66	32	36
	-G25S		25	26	74	41	46
	-G30S		30	27	80	46	50
	-G38S	315 bar 4560psi	38	29	90	55	60

Installation Instructions

The nuts of ROKE hydraulic fittings are all silver plated, and spray nano lubricating layer with our patent. This way, the installation torque can be controlled within a reasonable range.

Especially in the case of narrow space or suspended operation, it makes installation very easy.

For proper assembly, assembly instructions shall be followed. Improper assembly may lead to malfunctions or impair safety.

Assembly in the fitting body

1. Cut the tube：1/2˚ angle tolerance to the tube axis is permissible. A tube cutter is not recommended.

2. Lightly remove chips and particles from the inside and outside cut edges of the tube. Bevel up to 0.2mm × 45˚ is permissible.

3. For tube bend, the minimum height from the straight pipe end to the bending radius must be at least twice the height of the nut.

4. Lubricate the thread and cone of the fitting body, ring, and thread of the nut.

Assembly

5. Slip nut and then ring onto the tube end. Ensure that the ring is placed correctly.
6. Screw nut manually onto fitting body until finger tight. Hold the tube against the shoulder in the cone of the fitting body.

7. Mark nut and tube to measure the prescribed turns of the nut.
8. Tighten the nut 1 1/4 turns. Tube must not turn with tube. Stop edge of the ring limits over-tightening by increasing tightening torque.

Check & Final Assembly

9. Loosen nut and remove the ring-mounted tube from the fitting. Check if a visible collar has formed on the pipe before the first cutting edge. If not, tighten slightly more.

10. Insert the pre-assembled tube into the fitting. While holding the fitting body with a wrench, tighten nut approx. 1/4 revolution beyond the point of a clearly perceptible resistance.

The Importance Of The Hydraulic Fittings In Hydraulic Cylinder

Hydraulic fittings are crucial in hydraulic cylinders, essential components in hydraulic systems. Here are some of the key reasons why hydraulic fittings are important in hydraulic cylinders:

1. Secure Connection: Hydraulic fittings provide a secure and leak-free connection between the hydraulic cylinder and other components, such as hoses, tubes, or valves. The fittings ensure that hydraulic fluid flows smoothly and efficiently through the system without any loss of pressure or leakage.

2. Flexibility and Adaptability: Hydraulic fittings allow for flexibility and adaptability in the design and installation of hydraulic cylinders. They enable the connection of different types and sizes of hydraulic components, making it possible to create customized hydraulic systems to meet specific application requirements.

3. Pressure Containment: Hydraulic cylinders operate under high pressure, and the fittings help contain and withstand these pressures. They are designed to handle the hydraulic fluid's force and ensure the connection remains intact and leak-free, even under extreme pressure conditions.

4. Alignment and Orientation: Hydraulic fittings enable proper alignment and orientation of hydraulic cylinders. They allow for the correct cylinder positioning in the hydraulic system, ensuring smooth operation and optimal performance.

5. Ease of Maintenance: Hydraulic fittings make maintaining and repairing hydraulic cylinders more convenient. With fittings, components can be easily disconnected and reconnected, allowing for efficient inspection, replacement, or repair of the cylinder or other system elements.

6. Compatibility and Interchangeability: Hydraulic fittings are available in various sizes and configurations. This allows for compatibility and interchangeability between different hydraulic components from different manufacturers. It simplifies the process of assembling, modifying, or expanding hydraulic systems.

7. Safety and Reliability: The proper selection and installation of hydraulic fittings are critical for the safety and reliability of hydraulic cylinders. Well-designed fittings ensure a secure connection, minimizing the risk of leaks, pressure drops, or sudden failures that could lead to accidents or system malfunctions.

In summary, hydraulic fittings are vital in hydraulic cylinders, providing secure connections, pressure containment, adaptability, and ease of maintenance. They contribute to hydraulic systems' overall performance, efficiency, and safety by ensuring leak-free operation and proper fluid flow.

Application of Hydraulic Fittings

Hydraulic fittings have a wide range of applications across various industries where hydraulic systems are used. Here are some common applications of hydraulic fittings:

1. Construction Machinery: Hydraulic fittings are extensively used in construction machinery such as excavators, loaders, bulldozers, and cranes. They connect hydraulic hoses, cylinders, valves, and other components within the hydraulic systems of these machines.

2. Agriculture Equipment: Hydraulic fittings are crucial in agricultural machinery like tractors, combines, and sprayers. They are used to connect hydraulic cylinders, hoses, and valves, enabling the operation of implements and controlling hydraulic functions.

3. Industrial Machinery: Hydraulic systems are prevalent in industrial machinery, including presses, machine tools, material handling equipment, and manufacturing processes. Hydraulic fittings are vital in connecting hydraulic components and facilitating fluid flow for powering and controlling these machines.

4. Automotive Industry: Hydraulic fittings find applications in the automotive industry, particularly in hydraulic braking systems. They are used to connect brake lines, brake hoses, and calipers, enabling the transmission of hydraulic pressure for effective braking.

5. Aerospace and Aviation: Hydraulic systems are critical in aerospace and aviation applications, such as aircraft landing gear, flight control systems, and hydraulic actuators. Hydraulic fittings are used to connect hydraulic lines, valves, and cylinders, enabling precise control and operation of various aircraft systems.

6. Marine and Offshore Applications: Hydraulic fittings are used in marine and offshore equipment, including ships, oil rigs, and underwater vehicles. They connect hydraulic components, such as steering systems, winches, and hydraulic cylinders, to enable maneuvering, lifting, and other operations.

7. Material Handling Equipment: Hydraulic fittings are essential in material handling equipment like forklifts, cranes, and conveyors. They connect hydraulic cylinders, hoses, and valves, allowing the precise control of lifting, lowering, and movement of heavy loads.

8. Mobile Equipment: Hydraulic fittings are found in various mobile equipment, including cherry pickers, scissor lifts, elevating platforms, and utility vehicles. They connect hydraulic components, enabling hydraulic cylinders' extension, retraction, and control to achieve desired movements and functions.

These are just a few examples of the many applications where hydraulic fittings play a crucial role in hydraulic systems. The versatility and reliability of hydraulic fittings make them essential in industries that rely on hydraulic power for efficient and precise control of machinery and equipment.

Our Factory

Ever power, the main products of various domestic and international standards of high-pressure ball valves, needle valves, valve manifolds, flange, pipe fittings, tube fittings, and other products, widely used in nuclear power, petroleum, chemical, shipbuilding, sea engineering, metallurgy, machinery, electric power industries, measuring instrument pipeline and the high temperature and high pressure, high corrosion resistance and other harsh conditions of the site.

Our company is approved by the China Classification Society quality certification, with import and export certificates. The company covers an area of 7200 square meters, a construction area of 5400 square meters, and an existing technical staff of more than 60 people. Company production equipment, product manufacturing product design, mold development, mold making material forging, CNC precision machining, metal surface treatment, finished testing a full set of production technology, the production of high precision products, pressure resistant. Products are exported to Japan, Germany, America, South America, Southeast Asia, and many others.