Engineering Insights & Technical Updates

SD SWIVELES Engineering NEWS

Expert insights on rotary joint manufacturing, fluid sealing technology, industrial automation trends, and engineering innovations — helping you optimize production processes and reduce downtime.

Reason for rotating joint failure
Reason for rotating joint failure

Rotary Union/Swivel Joint is a 360 ° rotating fluid dynamic sealing device, whose core function is to transport media such as gas, liquid, oil, etc. from fixed pipelines to rotating or reciprocating parts without leakage, preventing pipeline entanglement and ensuring continuous operation.

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Discussion on the Differences in Quality of Central Rotary Joints
Discussion on the Differences in Quality of Central Rotary Joints

Central rotary joint is a sealing device that connects rotating components and fixed pipelines, and transmits hydraulic oil, water, air or electrical signals during relative rotation. It is mainly used for construction machinery such as excavators and shield machines that can rotate continuously 360 degrees

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Rotating joint extension shaft and motor connection
Rotating joint extension shaft and motor connection

Extension shaft of rotary joint is a special structural form of rotary joint, which refers to a section of shaft body extending from the standard rotary joint, used to directly connect the motor spindle or transmission components, achieve sealed transmission of medium (gas/liquid/vacuum, etc.) in the rotating state, and adapt to axial force and installation space limitations

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Hydraulic pipe joint of excavator leaks oil
Hydraulic pipe joint of excavator leaks oil

Oil leakage often occurs at the hydraulic pipe joints of excavators, and the reasons are as follow

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Structure of heat transfer oil rotary joint
Structure of heat transfer oil rotary joint

The installation of heat transfer oil rotary joint is composed of non rotating parts and rotatable shaft or flange. Firstly, a flexible hose or straight pipe is inserted into the non rotating parts. The non rotating connection part and the upper part formed by the casting are composed of external threads and concave internal threads

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Why does the rotary joint swing left and right
Why does the rotary joint swing left and right

Rotary joints are mostly composed of connecting shafts and bearings. If there is swinging, we need to first confirm whether there is clearance in the bearings. Sometimes, at high speeds, the steel beans will rub and become smaller

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Reasons for leakage of hydraulic rotary joints
Reasons for leakage of hydraulic rotary joints

Hydraulic rotary joints are suitable for high torque working environments and are widely used in industries such as machine tool fixtures, automation, metallurgy, wind power, and construction machinery. Because of its high pressure, it is usually called a high-pressure rotary joint, and some special equipment can reach a maximum pressure of 45MPa

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Specification and model of rotary joint
Specification and model of rotary joint

Specification and model of rotary joints

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The working principle of hydraulic rotary joints
The working principle of hydraulic rotary joints

In the current definition, the operation of multiple pipelines independently designed inside the same joint without interfering with each other is called a multi-path rotary joint

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High end rotary joint design
High end rotary joint design

The part that can rotate 360 ° in daily life is called a rotary joint, which is characterized by the ability to input fluid and gas mechanisms from a stationary pipeline into rotating or reciprocating equipment

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Batch leakage of thermal oil rotary joints
Batch leakage of thermal oil rotary joints

In industrial production lines, the stable operation of thermal oil systems relies on reliable rotary joints. Once a company encounters a rotary joint leakage fault, shutdown for maintenance can cause production capacity loss, skyrocketing maintenance costs, and even serious safety accidents

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Photovoltaic tracking system rotary joints
Photovoltaic tracking system rotary joints

The rotating joint may seem to have a sophisticated structure, but it actually contains exquisite engineering wisdom. Its core lies in cleverly solving the sealing problem between "motion and stillness"

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