Chain Couplings

Chain couplings are mechanical devices for connecting two shafts. They consist of two rows of roller chains with sprockets that engage them. The shafts are then cranked to move the coupling. Chain couplings are available in a range of sizes and torque capacities.

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Chain Couplings

The chain coupling is composed of a duplex roller chain and a pair of coupling sprockets. The function of connection and detachment is done by the joint of the chain. It has the characteristic of being compact and powerful, excellent durability, safe and smart, simple installation and easy alignment. The chain coupling is suitable for a wide range of coupling applications.

Chain Couplings

Parameters of Chain Couplings

 

Chain Couplings

Chain Coupling No. Chain No. Bore Dia Dimension Inertia Approx Weight Casing
Min Max L I S d1 d2 C ×10-3 Dimension Approx Weight
A B
mm mm mm mm mm mm mm mm kgf·m2 kg mm mm kg
3012 06B-2X12 12 16 64.8 29.8 5.2 25 45 10.2 0.233 0.4 69 63 0.3
4012 40-2X12 12 22 79.4 36.0 7.4 35 61 14.4 1.020 0.8 77 72 0.3
4014 40-2X14 12 28 79.4 36.0 7.4 43 69 14.4 1.924 1.1 84 75 0.4
4016 40-2X16 14 32 87.4 40.0 7.4 50 77 14.4 3.285 1.4 92 75 0.4
5014 50-2X14 16 35 99.7 45.0 9.7 53 86 18.1 6.010 2.2 101 85 0.5
5016 50-2X16 16 40 99.7 45.0 9.7 60 96 18.1 9.720 2.7 111 85 0.6
5018 50-2X18 16 45 99.7 45.0 9.7 70 106 18.1 15.420 3.8 122 85 0.8
6018 60-2X18 20 56 123.5 56.0 11.5 85 128 22.8 40.210 6.2 142 106 1.2
6020 60-2X20 20 60 123.5 56.0 11.5 98 140 22.8 62.870 7.8 158 105 1.6
6022 60-2X22 20 71 123.5 56.0 11.5 110 152 22.8 93.450 10.4 168 117 1.8
8018 80-2X18 20 80 141.2 63.0 15.2 110 170 29.3 142.030 12.7 190 129 2.5
8020 80-2X20 20 90 145.2 65.0 15.2 120 186 29.3 204.900 16.0 210 137 2.9
8022 80-2X22 20 100 157.2 71.0 15.2 140 202 29.3 341.170 20.2 226 137 3.6
10020 100-2X20 25 110 178.8 80.0 18.8 160 233 35.8 646.290 33.0 281 153 4.6
12018 120-2X18 35 125 202.7 90.0 22.7 170 256 45.4 1075.710 47.0 307 181 6.2
12022 120-2X22 35 140 222.7 100.0 22.7 210 304 45.4 2454.500 72.0 357 181 8.0

 

What Are Chain Couplings?

Chain couplings are mechanical devices for connecting two shafts. They consist of two rows of roller chains with sprockets that engage them. The shafts are then cranked to move the coupling. Chain couplings are available in a range of sizes and torque capacities.

Chain couplings are all steel and compact for space-constrained applications. They transmit high torques and offer positive power transmission. Unlike conventional couplings, chain couplings require less space and are easily installed and dismantled. They also provide a balanced unit operation, which is essential for high torques. Chain couplings are typically used in low-speed, high torque applications. They also offer a high degree of flexibility and allow for misalignment of up to 2 degrees between the shafts.

Advantages of a Chain Coupling

A chain coupling is a type of transmission system that uses a single common chain, meshing with two parallel sprockets to transfer power from one shaft to the other. A chain coupling comes in various varieties, including roller chain coupling, toothed chain coupling, and nylon chain coupling. The benefits of a chain coupling include its simplicity, reliability, and low installation accuracy. A chain coupling is a common option for shafting transmission applications, especially in low-speed, high-torque applications.

One of the most important advantages of chain couplings is their high-torque capability. Because they are made of two flanges linked by a duplex roller chain, they are ideal for high-torque applications. They can accommodate up to 2 degrees of misalignment, which makes them a common choice for applications that require high torque. Another advantage of chain couplings is their ease of installation and low-maintenance requirements.

Besides being easy to assemble, a chain coupling also keeps the two shafts perfectly aligned. It also minimizes shock and vibrations during power transmission. It should also have a low-profile design and be easy to fit between two shafts. And, of course, it should be able to transmit power from one shaft to the other. These features are essential for high-speed applications.

Chain Couplings

HZPT, one of the professional coupling manufacturers that you can rely on, can offer high-durability China chain couplings at reasonable prices! Feel free to contact us!

Applications of Chain Couplings

Chain couplings are usually employed in low to moderate-speed, high-torque applications and are not often found in higher-speed applications where grid, gear, and other more sophisticated couplings predominate. They are considered to be fairly rugged and easy to install. Typical applications include line-shaft couplings on live-roller conveyors. Here, the plastic chain provides a lubrication-free coupling solution that requires neither covers for lubricant retention nor coupling guards because the smooth outer surface of the chain presents no catch hazards.

For standard power transmission applications, chain couplings can be purchased in a range of shaft sizes and torque capacities, with typical bore diameters up to 4-1/2 in. and torque capacities up to 220,000 in.-lbs. available. Allowable angular misalignment is usually a maximum of 1° and parallel misalignment is usually limited to 2% of the chain pitch. Sometimes these allowances are decreased for installations that operate at higher speeds.

Sprockets are sized in two-tooth intervals to correspond to the roller chain links, with pitches based on ANSI standards (i.e., #40, #60, #80). Ordinarily, the manufacturer will select the appropriate sprocket size and pitch for the given torque requirements, but knowing the pitch of the sprocket makes it possible to select an appropriate replacement chain.

China Chain Coupling

How to Install a Roller Chain Coupling?

Ever-power chain couplings feature a unique single-pin design that greatly simplifies the installation process. Simply follow these simple steps.

  • Install the oil seal on each hub
  • Adjust the alignment of the shaft and coupling assembly
  • Adjust the distance between the sprocket faces
  • Thoroughly lubricate the coupling chain
  • Install the chain to the coupling using the single pin coupling ring
  • Firmly close and secure the coupling cover (optional, depending on operating conditions)

The chain coupling installation process is simpler and faster than conventional rigid couplings.

Chain Coupling

Additional information

Edited

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