A fluid coupling or hydraulic coupling is a hydrodynamic or ‘hydrokinetic’ device used to transmit rotating mechanical power. It is employed in automotive transmissions in lieu of mechanical clutches. It is also used in industrial and marine machine drives in which it is possible to control the speed of operation and starting-up without shock loading of the transmission power system are vital.
Fluid Coupling Characteristics
-Improve the starting capability of the electric motor
-Protect the motor against overloading, damp shock, load fluctuation, and torsional vibration
-Balance and load distribution in case of multi-motor drives
Applications of Fluid Coupling
Fluid couplings have a wide range of applications in various fields such as
-Conveyors of all kinds Bucket elevators, ball mills, hoisters, crushers, excavators, mixers, straighteners, cranes, etc.
Check more about Fluid Coupling applications.
Technical Data Sheet of Constant Filling Fluid Couplings
|Item no.||600 (r/min)||750 (r/min)||1000 (r/min)||1500
Without special requirements the following technical data sheet and power chart are used to select the proper size of fluid coupling with oil medium according to the power transmitted and the speed of motor,e,i,the input of the fluid coupling.
When ordering, please specify the dimensions of the shaft ends of lmotor and driven machine(or reducer)including diamenter,tolerance or fit of the shafts (if no tolerance or fit is specified,the bores will be machined th H7),fit length of the shafts,width and depth of the keys (of notice the standard No.enforced). For ordering the fluid couplings with belt pulley,brake puley or othe special requirements please state the technical data in detail.
Types of Fluid Couplings for Sale
YOXz YOXzⅡ YOXzⅢ Fluid Couplings Size and Specification
YOXz is a coincidence machine with moving wheel which is in the output point of the coincidence machine and is connected with elastic axle connecting machine (plum blossom type elastic axle connecting machine or elastic pillar axle-connecting machine or even the axle-connecting machine designated by customers). Usually there are 3 connection types.
YOXz is inner wheel driver which has tight structure and the smallest axle size.The fittings of YOXz have a wide usage, simple structure and the size of it has basically be unified in the trade.The connection style of YOXz is that the axle size of it is longer but it is unnecessary to move the electromotive machine and decelerating machine. Only demolish the weak pillar and connected spiral bolt can unload the coincidence machine so it is extreme convenient. Customer must offer the size of electromotive machine axle (d1 L1) and decelerating machine axle (d2 L2). The wheel size (Dz Lz C) in the table is just for reference, the actual size is decided by customers.
Select Table of YOXz YOXzⅡ YOXzⅢ Fluid Couplings Size and Specification
YOXp Type Fluid Couplings Size and Specification
Select Table of YOXp Type Fluid Couplings Size and Specification
the smallest size Dp belt tray can do.the largeat size the dl axle hole can do YOXp type is a connection style of belt tray with hydraulic coincidence machine. The electromotive machine (or decelerating machine) axle directly inserts in the axle hole of the coincidence machine which is suitable in equipment transported by belt.Customer must supply the connection size of electromotive machine axle (d1 L1) and the detailed specification and size of belt tray.
YOXm Type Fluid Couplings Size and Specification
YOXm is one that the axle of decelerating machine directly inserts in the axle hole of coincidence machine and the electromotive machine point ML(GB5272-85) connects with plum blossom type elastic axle connecting machine. It is reliable connected and has simple structure, the smallest axle size which is a common connection type in current small coincidence machine.
Customer must supply the size of electromotive machine axle (d1 L1) and decerating machine axle (d2 L2) as shown in the picture, others if customer do not supply, we will manufacture according to the sizes in the table.
Attention: L in the table is the smallest axle size.If lengthen the L1,the total length of L will be added.d1,d2are the largest size that we can do.
Select Table of YOXm Type Fluid Couplings Size and Specification
YOXe YOXf Fluid Couplings Specification and Size
YOXf is a type of fluip coupling connected both sides, the axle size of which is longer. But it has simple structure and it is more easy and convenient for fixing and amending (unnecessary to move the electromotive machine and decelerating machine but only the elastic pillar and connecting spiral bolt can unload the coincidence machine).
The relevant elastic axle connecting machine, connecting size and outer size is basically the same with YOXe type.
Select Table of YOXe YOXf Fluid Couplings Specification and Size
|Item no.||D||L(min)||d1(max)||L1(max)||d2(max)||L2(max)||Coupling Specification|
Fluid Couplings Advantages and Disadvantages
There are a variety of advantages and disadvantages to hydrodynamic fluid couplings may be discussed. One of them is that the fluid drive coupling could restrict the amount of torque that is transmitted through the motor. This is due to the fact that motors’ output torque the motor will be restricted when the output and input speed are the same.
Another advantage in fluid coupling is it can provide an absorption mechanism for shock of a mechanical nature. This is particularly important in situations where shock loads are encountered. For example, conveyors in mines carry many tons of materials each day. If the load gets excessively heavy, there will be an increase in wear and wear and tear on the drive assembly.
Another benefit for the use of a fluid coupling system is the fact that it gives soft starting. This helps reduce stress on the machine and also stop the coupling from cracking. The fluid coupling may be utilized to transfer the greatest torque that is possible.
The disadvantage for the fluid coupling is it could need more maintenance. This could include inspecting the fluid in the coupling and in the components. The manufacturer could also suggest altering the viscosity. The fluid used for a fluid coupling may differ according to the load, operating conditions, and also the casing of the fluid.
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