All You Need To Know About Flexible Gear Couplings

A gear coupling is a mechanical device that you can apply for power transmission and also use as a hub with gear teeth on the outer diameter of the input shaft. The output’s hub shaft is connected by a flange or sleeve with the teeth inserted in the inside diameter. Gear coupling from a China forgings and flanges supplier helps in transferring the torque and house shaft misalignment.

Usually, gear couplings are manufactured of metals. Thus, they need flawless lubrication for problem-free running. These couplings are quite rigid and can transfer high-level torque through small packages.

Components of coupling

Gear couplings comprise a clutch, an input connection to power take-off, and output to transfer power input from the trailer unit. The tension generated when the coupling connects the trailer units and the tractor remains under monitoring, and clutch slippage is also controlled in response to the monitored tension. This monitoring is a must to regulate the trailer unit’s speed, which is the same as the tractor unit’s speed.

About flexible coupling

Flexible coupling links rotating members like motors and drive shafts as well as permits misalignment in either angular or parallel offset orientation. These types of coupling can be block, roller, or silent chain.

If you are searching for flexible couplings, below are mechanical considerations that you ought to look for:

– Rated torque

– Rated speed

– Torsional stiffness

– Backlash

  • Rated torque is the maximum service torque, which rates the coupling.
  • The rated speed is the coupling’s maximum rated rotational speed.
  • Backlash is coupling’s lost rotational position due to a change in direction.
  • Torsional stiffness is torque per unit angular deformation.

The flexibility of such couplings prevents misalignment by moving the various parts of the coupling with negligible resistance.

A flexible gear coupling is able to pass on torques from 2,500 in-pound (208 ft-lb or 282 NM) to 47,269,000 in-pound (393,908 ft-lb or 533,462 NM) with an angular misalignment capacity of 3°.

Qualities of flexible gear couplings

Following are a few of the normal features you get in the flexible gear couplings:

Gear couplings comprise a clutch, an input connection to power take-off, and output to transfer power input from the trailer unit.

The tension generated when the coupling connects the trailer units and the tractor is generally monitored, and clutch slippage is also controlled in response to the monitored tension. This monitoring is required to regulate the trailer unit’s speed, which is the same as the tractor unit’s speed.

Hastelloy Alloys

Applications and Characteristics of Hastelloy and Its Types

Hastelloy is a representation of a family of corrosion-resistant alloys. It is a rare metal that is used when a project requires exceptional strength and corrosion resistance. You can easily get this from any renowned China Hastelloy alloy supplier. It is a nickel alloy with chromium, iron, copper, cobalt, and manganese added to it.


There are several types of Hastelloy alloys. These are used in a wide variety of industries. Nickel is one of the major ingredients of Hastelloy alloys. There are other ingredients used here that are:

  • Carbon
  • Cobalt
  • Aluminum
  • Titanium
  • Molybdenum
  • Manganese
  • Tungsten
  • Iron
  • Chromium
  • Copper
  • Zirconium


Characteristics of Hastelloy:

  • High resistance
  • Localized corrosion resistance
  • Stress corrosion cracking resistance
  • Excellent resistance to acids including sulfuric, hydrochloric, chromic, nitric, and hydrofluoric
  • Welding and fabrication are done easily.
  • High oxidation resistance.


Applications in which Hastelloy Alloy is used:

  • Chemical industry
  • Pharmaceutical
  • Aerospace
  • Items where exposure to high mechanical stress and seawater is required
  • Items exposed to flue gas or flue gas desulfurization plants.
  • Marine industries
  • Industrial gas turbine
  • Health and environmental
  • Oil and gas


Different Hastelloy Alloys:

China Hastelloy Alloy

Hastelloy B-2 Alloy:

  • Good resistance to hydrochloric acid and other reducing chemicals of B-3 alloys.
  • Great thermal stability
  • Fabric ability
  • Stress corrosion cracking resistance.


Hastelloy HYBRID- BC1 alloy:

  • An advanced Ni-Cr-Mo alloy
  • Excellent resistance to hydrochloric and sulfuric acids
  • High resistance to pitting and crevice attack in chloride salt solutions
  • It contains high levels of oxidizing impurities.


Hastelloy C-4 alloy:

  • High-temperature stability in the 1200-1900°F (650-1040°C) range
  • Good ductility
  • Corrosion resistance
  • Almost same corrosion resistance as alloy C-276.


Hastelloy C-22 alloy:

  • Better corrosion resistance in oxidizing corrosives as compared to C-4, C-276, and 625 alloys.
  • Excellent resistance to localized corrosion
  • Best resistance to stress corrosion cracking
  • This is the best alloy to use as a universal weld filler metal to resist corrosion of weldments.


Hastelloy C-22HS alloy:

  • Exhibit corrosion resistance as compared to other C-type alloys.
  • These can be heat treated to get approximately double the yield strength.


Hastelloy C-276 alloy:

  • Versatile
  • Corrosion-resistant alloy
  • Excellent resistance to reducing and mildly oxidizing corrosives.
  • Better stress corrosion cracking resistance.
  • Excellent resistance to localized attack.

Hastelloy C-2000 alloy:

  • Most versatile
  • Corrosion-resistant alloy
  • Outstanding resistance to uniform corrosion in oxidizing or reducing environments
  • Better resistance to stress corrosion cracking
  • Excellent resistance to localized corrosion as compared to C-276 alloy.
China Nickel Alloy Bar

Six Industries in Which Nickel Alloy Bars are used widely

Nickel alloys are the metals with the best corrosion resistance, strength, toughness, fabric ability, weldability, and metallurgical stability. With these properties, China nickel alloy bar serves several industries. These are used to manufacture different components in several industries.

China Nickel Alloy BarAerospace Industry:

The major market for nickel alloys is in the aerospace industry. They are mostly used for high-temperature applications. With its properties such as great mechanical strength, surface stability, corrosion, creep resistance at high temperature, and oxidation, the use of this has been increased in the aerospace industry. With the increasing air traffic and demand for fuel-efficient aircraft, the aerospace industry has grown. This growth has been predicted to increase the use of nickel alloys.

Chemical Industry:

Nickel alloys along with nickel alloy plate N08800/N08825, due to their wide usage, are in severe demand. The manufacturing of chemicals often shows the equipment that is processed to highly corrosive fluids. These fluids come in contact with the inside surface of the equipment. To corrosive fluids, nickel alloys give the best corrosion-resistant properties.

The strength of nickel alloys permits great design flexibility and lighter fabrication. With the growth of the chemical industry, the nickel alloys market is also growing.

Oil and Gas Industry:

Nickel alloy-based equipment and components are widely used by the oil and gas industry. Nickel alloys, compared to other types of materials such as stainless steel and iron, have high corrosion resistance and great mechanical and physical properties. Different grades of nickel alloys are used in this industry. With the growth in the oil and gas industry, nickel alloys are also growing with different grades.

Electronics Industry:

With the high strength, changing temperatures, corrosion resistance, toughness, workability, controlled thermal expansion, and many other properties, nickel alloy-based strips and wires are widely used in the electronics industry. This industry needs alloys that are used at high temperatures. Anode plates, passive cathode, and plater bars are manufactured with nickel alloys as they provide stability, workability, and strength at changing temperatures.

Power Industry:

Nickel alloys are used in boiler applications for their strength and hot corrosion resistance at high temperatures. These are commonly used for coal nozzles with th

e presence of chlorine. With this, they are also used in other internal boiler parts, such as tube supports, tube shields, and temperature probes. Some properties such as super resistance corrosion and mechanical features of extremely low and high temperatures make nickel alloys to be widely used in this industry.

Automotive Industry:

Depending on the vehicle type and application, nickel alloys are used in the automotive industry. Depending on the area of application and its operational requirements, the material is selected accordingly. These are mostly used in brake fluid lines, pistons and cylinder inserts, ignition systems, sensors, actuators and connectors, safety devices, and electrical switchgear.

head and expansion joint

Characteristics and Types of Expansion Joints

Characteristics and Types of Expansion Joints

Every head and expansion joint supplier has made expansion joints in a way that they are used to prevent broad cracks. Expansive cracks are formed because of temperature changes. They are usually placed in solid materials.

The solid materials undergo growth because of high temperature when in a restricted boundary, which leads to cracks. Expansion joints are provided in slabs, pavements, buildings, bridges, sidewalks, railway tracks, piping systems, ships, and other structures.

Characteristics of Expansion Joints:

  • Expansion joints allow for thermal contraction and expansion without putting a load on the surrounding elements.
  • An expansion joint is used to absorb safely the expansion and contraction of a variety of construction materials, as well as to absorb vibrations and allow for soil movement because of earthquakes or ground settlement.
  • Expansion joints are typically found between bridge sections, asphalt slabs, railroad tracks, and plumbing systems.
  • Expansion joints are used to withstand the load.
  • A separation between pieces of the same material is all that an expansion joint is.
  • In the construction of a solid block, the expansion joints are declared as control joints.

Types of Expansion Joint:

Bridge Expansion Joints:

These expansion joints allow for continuous traffic between structures while obliging movement, shrinkage, and temperature variations on strengthening and pre-load solid materials, complex, and steel structures.

head and expansion joint supplier

Masonry Expansion Joints:

The heat and moisture absorbed by clay bricks expand. This will put a load of compression on the bricks and motor uplifting swelling and flaking. A joint replacing cement which is adhesive to elastomeric will absorb a load of compression without damage.

Railway Expansion Joints:

Expansion joints are not usually provided in railway tracks. If the track is set on a bridge, having an expansion joint, then it is mandatory to provide an expansion joint to ease the expansion in a solid material structure.

Pipe Expansion Joints:

The systems that bring high-temperature substances such as steam and exhaust gases, pipe expansion joints are used. They are also used to absorb movement and vibration.

Metallic Expansion Joints:

To prevent damage caused by thermal growth, vibration, pressure thrust, and mechanical loads in pipework or duct system, metallic expansion joints are used.

Rubber Expansion Joints:

They are malleable connectors. They comprise natural or synthetic elastomers and fabrics with metallic reinforcements. These provide load comfort in piping systems because of thermal changes. Rubber expansion joints reward lateral, torsional, and angular movements preventing damage.


China Forgings and Flanges

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Shanghai Yigang Supply Chain Co.,Ltd, located in No.101 West Youyi road, Baoshan district, Shanghai, China as headquarter is a comprehensive company integrating trade from Nanjing, Dalian, Chengdu and Wuxi branch office and Suzhou factory offer steel parts.

Contact Us

  • Shanghai Yigang Supply Chain Co., Ltd

  • Ms. Helen Tang

  • +86-21-66013827/28/29, +86-13761706386

  • 25th Floor, Building 1, Building Science and Technology Park, 101 Youyi West Road, Baoshan District, Shanghai

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