Rectangular Flat Base Cylinder Earring Bearing

GF...DO Series Cylinder Earring | Compact & Space-Saving, High Load-Bearing & Leak-Proof, Preferred Accessory for Multi-Field Hydraulic Systems

The GF...DO series cylinder earring is an integrated connecting component specially designed for the piston rod end of hydraulic cylinders, belonging to the earring oil inlet and outlet structure. It is mainly suitable for multi-stage telescopic cylinders and various hydraulic executive systems that require flexible connection and compact installation. Strictly complying with the national standard GB/T 14036-93 and industry precision manufacturing specifications, it has become a core supporting component in fields such as construction machinery and mining equipment, relying on its compact and space-saving integrated structure, excellent mechanical properties and wide adaptability. It effectively solves the industry pain points of traditional cylinder earrings, such as large volume, easy leakage and high pressure loss.

Core Product Structure

The GF...DO series cylinder earring adopts an integrated mountain-shaped structure design of "base + boss + circular ring". The extremely compact shape ensures structural stability. The length of the base is consistent with the maximum diameter of the circular ring, and the width of the base is greater than the length of the circular ring, which maximizes space utilization and perfectly adapts to working conditions with narrow installation space. The details of its core structure are as follows:

● Base: As the core bearing component, it is provided with two parallel stepped through holes (through hole A and through hole B) perpendicular to the axis of the boss. The aperture is of a structure with one end large and the other end small. The large-diameter hole is used as the oil inlet and outlet, and the small-diameter holes are used as the pressure measuring hole and the exhaust hole respectively, realizing the integrated integration of oil passage, pressure measurement and exhaust. It eliminates the need for additional process plug welding and greatly reduces the risk of high-pressure oil leakage.

● Boss: It is cylindrical and fixed at the lower end of the base, used for connecting with the piston rod body. A circular counterbore is opened at the center of the end face, which can provide accurate positioning for the core tube to be welded later; a main inclined hole leading to the through hole A is opened at the bottom end of the counterbore, with an inclination angle controlled between 10° and 30°. The inclined transition oil circuit design is adopted to reduce the impact and pressure loss of high-pressure oil; three branch side holes distributed in a straight line are also opened on the end face of the boss, all of which are connected with the through hole B, which not only increases the oil passage area, but also saves the weld space and enhances the welding connection strength.

● Circular Ring: Fixed at the upper end of the base, used for connecting with external components. Two grooves are arranged on the inner surface to facilitate the fixation of external components; a radial threaded hole is opened on the outer surface, through which grease can be injected to improve the lubrication performance of the connection part, reduce wear and extend the service life.

Core Advantages and Features

1. Compact Structure and High Integration: Adopting the mountain-shaped integrated structure, it integrates the functions of bidirectional oil passage, pressure measurement and exhaust of the front and rear chambers into one, without the need for additional accessories. It greatly reduces the volume of the earring, maximizes space utilization, perfectly adapts to narrow installation scenarios, and at the same time makes the overall structure of the hydraulic cylinder more compact, reducing the equipment space occupation rate and production and manufacturing costs.

2. Safe and Reliable, Low Leakage Risk: The stepped through hole design connects the pressure measuring hole, exhaust hole with the oil inlet and outlet, eliminating the process plug welding process, optimizing the oil circuit arrangement, and avoiding problems such as reduced wall thickness and perforation leakage caused by deep hole processing deviation; the combination of the main inclined hole and the branch side holes not only increases the oil passage safety, but also reduces the along-path pressure loss, meeting the flow demand of the main engine for rapid lifting.

3. Excellent Mechanical Properties and Strong Load-Bearing Capacity: Processed by forging technology, the internal grain structure of the metal is optimized through high-pressure plastic deformation, making the product have high toughness and strong fatigue resistance. It can bear strong impact and heavy load, and is suitable for various medium and high pressure working conditions.

4. Convenient Installation and Wide Adaptability: The circular ring structure is convenient for connecting with external components through pins, which can swing flexibly within a certain angle range, compensate for installation errors and reduce the damage of lateral force to the oil cylinder; it is suitable for earring oil inlet and outlet type multi-stage cylinders, especially for scenarios with narrow installation space and inverted installation, without the need for additional external high-pressure hoses, facilitating the installation and fixation of hoses.

5. Strong Durability and Convenient Maintenance: The surface anti-corrosion treatment can effectively resist the erosion of harsh environments and extend the service life; the grease injection threaded hole on the circular ring is convenient for regular supplementary lubrication, reducing the wear of the connection part; the overall structure is simple, and no complex procedures are required for later maintenance, which can greatly reduce the equipment maintenance cost.

Application Scenarios

The GF...DO series cylinder earring is mainly suitable for earring oil inlet and outlet type multi-stage telescopic cylinders, and is mainly applied to equipment and fields that have narrow installation space, require inverted installation and have high requirements for structural compactness and load-bearing capacity, which accurately echoes the core selling points of the title. The specific applications include:

● Construction Machinery: Steering cylinders and lifting cylinders of equipment such as loaders, excavators and cranes, which can meet the requirements of flexible swing and high load of equipment under complex working conditions.

● Mining Equipment: Hydraulic executive systems of mining machinery such as mining trucks, which are suitable for the harsh working environment of mines and can resist the impact of dust, impact and other factors on components.

● Tooling Fixtures and Automation Equipment: Push-pull rod cylinders of various precision tooling fixtures and automatic production lines, which can compensate for installation errors and ensure motion accuracy and stability.

● Other Fields: Hydraulic systems of equipment such as presses and injection molding machines, as well as various hydraulic executive mechanisms in fields such as navigation, energy and electric power, can all select the corresponding model of GF...DO series cylinder earring according to specific working conditions.

Product Standards and After-Sales Service

The product strictly complies with the national standard GB/T 14036-93 "Mounting Dimensions of Earring with Spherical Plain Bearing at Piston Rod End of Hydraulic Cylinders" and the international standard ISO 6982. All products have passed strict pressure tests, leakage tests and precision inspections to ensure that each product meets quality requirements. At the same time, perfect after-sales support is provided, including professional technical guidance for questions during product installation and use, as well as free maintenance or replacement services for quality issues, helping customers improve equipment operational stability and reduce operation and maintenance costs.