Fluid Couplings

A fluid coupling is referred to as a hydraulic fluid coupling which seems to be a hydrodynamic device that is used to transmit the rotating mechanical power through the acceleration as well as the deceleration of the hydraulic fluid.

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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.

China Fluid Power Coupling

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 Power Coupling

Fluid Coupling Specifications

 Selection power table (KW)

Technical Data Sheet of Constant Filling Fluid Couplings YOX-Series

Item no. 600 (r/min) 750 (r/min) 1000 (r/min) 1500 (r/min) 3000 (r/min) Lquid(L) Weight(KG)
YOX-190 0.6-1.1 4.5-9.0 0.4-0.8 8.0
YOX-200 0.75-1.5 5.5-11 0.5-1.0 9.5
YOX-220 0.4-0.8 1.1-2.2 10-18.5 0.8-1.6 14
YOX-250 0.7-1.5 2.5-5.0 15-30 1.1-2.2 15
YOX-280 1.5-3.0 4.0-7.5 37-60 1.5-3.0 18
YOX-320 1.1-2.2 2.7-5.0 7.5-15 45-0 2.5-5.0 28
YOX-340 1.6-3.0 3.0-7.0 11-22 45-80 3.0-6.0 30
YOX-360 2.0-3.8 4.5-9.0 15-30 50-100 3.5-7.0 46
YOX-400 3.0-6.0 7.5-15 22-45 80-145 4.6-9.0 65
YOX-420 3.5-7 11-18.5 37-60 6.5-12 66
YOX-450 6.1-11 14-28 40-75 6.5-13 70
YOX-500 10-19 26-50 75-132 10-19 133
YOX-560 19-30 45-90 132-250 14-27 158
YOX-600 12-24 25-50 60-120 200-375 24-40 170
YOX-650 23-45 40-80 90-185 280-500 25-46 210
YOX-710 30-60 60-115 150-280 37-60 310
YOX-750 40-80 80-160 200-360 40-80 348
YOX-800 45-90 110-220 280-500 50-95 420
YOX-1000 140-280 270-550 70-140 510
λ=f(i) curve for fluid couplings

SELECTION:

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 the motor,e, i, the input of the fluid coupling.
When ordering, please specify the dimensions of the shaft ends of the motor and driven machine(or reducer), including diameter, 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 pulley or other special requirements, please state the technical data in detail.YOXz is a coincidence machine with a moving wheel which is in the output point of the coincidence machine and is connected with an 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 a tight structure and the smallest axle size. The fittings of YOXz have a wide usage and simple structure and the size of it has basically been 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 demolishing the weak pillar, and connected spiral bolt can unload the coincidence machine, so it is extremely convenient. The customer must offer the size of the 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

Item D Dz/Lz C d1 L1 d2 L2 L L L M
YOX-280 328 200/85 10 35 80 45 90 300 245 230 20
YOX-320 380 200/85 10 40 110 50 110 310 245 280 30?.5
YOX-360 422 250/105 10 55 110 55 110 360 260 300 30?.5
YOX-400 465 315/135 10 60 140 65 140 450 260 350 36?
YOX-450 522 315/135 10 70 140 70 140 505 280 390 42?
YOX-500 572 400/170 10 85 170 90 170 575 302 410 42?
YOX-560 642 400/170 10 100 170 110 170 600 366 440 42?
YOX-600 695 500/210 15 100 170 130 180 670 380 470 48?
YOX-650 745 500/210 15 120 210 130 250 725 390 440 48?
YOX-710 815 630/265 15 120 210 130 250 760 460 560 48?
YOX-750 850 630/265 20 140 250 150 250 800 520 580 56?

Automatic Transmission Fluid Coupling

Select Table of YOXp Type Fluid Couplings Size and Specification

规格 D L d1(max) L1 Dp(min) M
YOXp-190 235 102 25 60 78 16
YOXp-200 240 112 25 70 80 16
YOXp-220 260 175 30 80 80 16
YOXp-250 300 155 38 80 110 16
YOXp-280 328 160 38 100 120 20
YOXp-320 380 170 48 110 130 30?/font>1.5
YOXp-360 422 190 55 120 150 30?/font>1.5
YOXp-400 465 225 65 130 150 36?
YOXp-450 522 240 70 140 200 42?
YOXp-500 572 250 85 170 200 42?
YOXp-560 642 285 100 180 250 42?
YOXp-600 695 330 100 180 250 48?
YOXp-650 745 345 120 210 300 48?

 

Attentionthe 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.

Fluid Coupler

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.
China Fluid Coupling China Fluid Coupling

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.

China Fluid Coupling

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.
China Fluid Coupling

China Fluid Coupling

 

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.

Fluid Coupling Uses

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.

China Fluid Coupling

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.

Fluid Couplings

Additional information

Edited

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