Fluid Couplings

Fluid Couplings

A fluid coupling consists of two parts: the turbine and the pump. There are also blades inside, which are placed at an angle. The pump is mounted on the drive shaft end, while the turbine is on the driven shaft. When fluid enters the pump, the drive shaft rotates under the action of centrifugal force. When you add a reactor, it becomes a torque converter. Its main uses are industrial and marine applications.

Fluid Coupling Characteristics

Improve the starting capability of electric motor, protect motor against overloading, damp shock, load fluctuation and torsional vibration, and balance and load distribution in case of multi motor drives.

Types of Fluid Couplings

Several fluid coupling types are available on the market. They are used in the automobile industry, marine and railroad industry, oil and gas industry, water and waste treatment, construction, and industrial applications.

These couplings are used to transfer torque between two shafts. These couplings are based on the hydro-kinetic principles. They are made up of parts such as a runner, casing, impeller, and a seal. They are also referred to as "rotor" or "spindle."

There are two types of fluid coupling: constant fill and variable fill. A constant fill fluid coupling has a fixed torque, and a variable fill fluid coupling has a variable torque.

The constant fill fluid coupling is user-friendly and offers maintenance-free operation. It can also be used to control slip. It is also available in variable speed versions. The constant fill type is used in a wide variety of applications. It is also used to control torque during acceleration.

There are several fluid coupling manufacturers, and you can choose the one that meets your needs. HZPT is one if the fluid coupling manufacturers in China. We have high-durability with low prices fluid couplings for sale. Contact us now if you are interested.

Fluid Coupling Specifications

　Selection power table (KW)

Select Table of YOXz YOXzⅡ YOXzⅢ Fluid Couplings Size and Specification

Select Table of YOXp Type Fluid Couplings Size and Specification

Attention： the smallest size Dp belt tray can do the largest 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 for equipment transported by belt.The customer must supply the connection size of the electromotive machine axle (d1 L1) and the detailed specification and size of the belt tray.

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.
Select Table of YOXm Type Fluid Couplings Specification and Size Item no. D L（min） d1（max） L1 d2（max） L2 M（拆卸螺孔） M YOXm-190 235 180 30 60 25 60 16 MT4 YOXm-200 240 180 30 60 30 70 16 MT4 YOXm-220 260 200 36 70 35 70 16 MT5 YOXm-250 300 210 36 70 40 80 16 MT6 YOXm-280 328 240 40 80 45 100 20 MT7 YOXm-320 380 276 48 110 50 110 30?/font>1.5 MT7 YOXm-340 392 282 48 110 42 110 30?/font>1.5 MT8 YOXm-360 422 287 55 110 55 110 30?/font>1.5 MT8 YOXm-400 465 352 60 140 60 130 36?/font>2 MT10 YOXm-420 480 345 65 140 60 140 36?/font>2 MT10 YOXm-450 522 384 75 140 70 140 42?/font>2 MT10 YOXm-500 572 426 80 170 90 170 42?/font>2 MT11 YOXm-560 642 487 100 210 100 175 42?/font>2 MT11 YOXm-600 695 540 100 210 100 180 48?/font>2 MT12 YOXm-650 755 522 130 210 120 210 48?/font>2 MT12 YOXm-710 815 580 130 210 130 210 48?/font>2 MT12 YOXm-750 850 603 140 250 140 250 56?/font>2 MT12 YOXm-1000 1130 735 150 250 150 250 56?/font>2 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 YOXe YOXf Fluid Couplings Specification and Size Item no. D L（min） d1（max） L1（max） d2（max） L2（max） 联轴器规格 Le Lf YOXf-250 300 210 210 35 80 35 80 TL4 HL2 YOXf-280 328 230 230 35 80 35 80 TL4 HL2 YOXf-320 380 300 280 48 110 48 110 TL6 HL3 YOXf-360 422 350 300 55 110 48 110 TL6 HL3 YOXf-400 465 390 350 60 140 60 140 TL7 HL4 YOXf-450 522 415 390 75 140 65 140 TL8 HL5 YOXf-500 572 450 410 85 170 85 170 TL9 HL6 YOXf-560 642 525 440 90 170 85 170 TL10 HL6 YOXf-600 695 550 470 100 170 110 210 TL10 HL7 YOXf-650 745 600 440 110 210 110 210 TL11 HL7 YOXf-710 815 600 560 120 210 125 210 TL11 HL8 YOXf-750 850 650 580 140 250 140 250 TL12 HL9 YOXf-800 908 700 580 150 250 160 300 TL12 HL10 YOXf-1000 1130 750 750 180 300 180 300 TL13 HL11
YOXf is a type 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.

Applications of Fluid Couplings

Fluid Coupling uses in belt conveyors, scraper conveyors, and conveyors of all kinds Bucket elevators, ball mills, hoisters, crushers, excavators, mixers, straighteners, cranes, etc.

Using fluid couplings for power transmission offers several advantages. These include energy savings, overload protection, smooth acceleration, and torsional isolation. These advantages are useful for a variety of applications. In particular, they are used in heavy industry.

Fluid couplings are also used in marine applications. They are also found in large ventilators, mixers, and boiler feed pumps. Using these devices can increase the life of your equipment. They are also helpful for reducing downtime.

Advantages and Disadvantages of Fluid Couplings

Several advantages and disadvantages of hydrodynamic fluid couplings can be discussed. For one, the fluid drive coupling may limit the torque transmitted by the motor. This is because the output torque of a motor will be limited when the input and output angular velocities are the same.

The other advantage of fluid coupling is that it offers mechanical shock absorption. This is especially important in applications where shock loads are present. For example, conveyors used in mines move hundreds of tons of material per day. If the load becomes too high, there may be increased wear and tear on the drive assembly.

Another advantage of the fluid coupling is that it offers soft starting. This can reduce the stress on the machine, as well as prevent it from breaking. A fluid coupling can also be used to transmit the maximum torque possible.

However, the disadvantage of the fluid coupling is that it may require more maintenance. This includes checking the fluid in the coupling and the parts. The manufacturer may also recommend adjusting the viscosity. The fluid used in a fluid coupling may vary depending on the load, the operating condition, and the fluid casing.

Fluid Coupling VS Torque Converter

Whether a fluid coupling or torque converter is the right choice depends on many factors. For example, if a torque converter is under-filled, it will not be able to transmit the full torque to the wheels.

Another factor that affects the efficiency of a fluid coupling is the slippage that it experiences under load. This slippage is a significant loss of efficiency. During stop-and-go driving, for instance, a torque converter will usually operate in the least efficient range. This can be damaging to fuel economy.

A torque converter, on the other hand, is more efficient at low speeds. Its efficiency increases as the input and output shaft speeds increase. However, it is not efficient at highway speeds. It cannot achieve the same efficiency as a fluid coupling.

The efficiency of a fluid coupling will also be affected by the shape of the turbine blades. Minor variations in the shape of the blades can cause a significant change in the converter's performance.

The torque converter also produces a mechanical advantage that is similar to gear multiplication. However, the torque converter cannot achieve a 100% power transmission efficiency. It also has an extra element, known as a stator. The stator is an additional part that helps direct the flow of fluid.

Torque converters are usually used in light vehicles. They are also used in automatic power systems. They are usually bolted onto the input shaft of a transmission. They are also used in combination with a gear unit.