Coupling Chains and Chain Couplings

Coupling Chains and Chain Couplings 4012, 4014, 4016, 5014, 5016, 5018, 6018, 6020 Coupling Chain

A coupling chain is a type of chain used to connect two shafts that are not perfectly aligned. It is made up of two sprockets, a double-strand roller chain, and a coupling cover. The sprockets are attached to the shafts, and the chain runs between them. The coupling cover helps to keep the chain in place and protects it from damage.

What is a Chain Coupling?

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, having excellent durability, safe and smart, simple installation, and easy alignment. Chain coupling is suitable for a wide range of coupling applications.

Here are some of the types of chain couplings:

• Rigid chain couplings: These couplings are designed to connect two shafts that are perfectly aligned. They are made up of two sprockets and a chain. The sprockets are attached to the shafts, and the chain runs between them. The chain is held in place by the sprockets and the coupling cover.
• Flexible chain couplings: These couplings are designed to connect two shafts that are not perfectly aligned. They are made up of two sprockets, a chain, and a coupling cover. The sprockets are attached to the shafts, and the chain runs between them. The chain is held in place by the sprockets and the coupling cover. The coupling cover is made of a flexible material that allows the chain to move slightly, which helps to accommodate misalignments between the shafts.
• Universal joint chain couplings: These couplings are designed to connect two shafts that are at an angle to each other. They are made up of two sprockets, a chain, and a coupling cover. The sprockets are attached to the shafts, and the chain runs between them. The chain is held in place by the sprockets and the coupling cover. The coupling cover is made of a flexible material that allows the chain to move slightly, which helps to accommodate misalignments between the shafts.

Chain Coupling Size Chart

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

Coupling Chain Size Chart

Chain No.	Pitch	Roller diameter	Width between inner plates	Pin diameter	Pin length		Inner plate depth	Plate thickness	Transverse pitch	Tensile strength	Average tensile strength	Weight per piece
	P	d1 max	b1 min	d2 max	L max	Lc max	h2 max	T max	Pt	Q min	Q0	q
	mm	mm	mm	mm	mm	mm	mm	mm	mm	kN/lbf	kN	kg/pc
4012 Coupling Chain	12.700	7.95	7.85	3.96	31.0	32.2	12.00	1.50	14.38	28.2/6409	35.9	0.20
4014 Coupling Chain	12.700	7.95	7.85	3.96	31.0	32.2	12.00	1.50	14.38	28.2/6409	35.9	0.23
4016 Coupling Chain	12.700	7.95	7.85	3.96	31.0	32.2	12.00	1.50	14.38	28.2/6409	35.9	0.26
5014 Coupling Chain	15.875	10.16	9.40	5.08	38.9	40.4	15.09	2.03	18.11	44.4/10091	58.1	0.49
5016 Coupling Chain	15.875	10.16	9.40	5.08	38.9	40.4	15.09	2.03	18.11	44.4/10091	58.1	0.56
5018 Coupling Chain	15.875	10.16	9.40	5.08	38.9	40.4	15.09	2.03	18.11	44.4/10091	58.1	0.63
6018 Coupling Chain	19.050	11.91	12.57	5.94	48.8	50.5	18.00	2.42	22.78	63.6/14455	82.1	1.06
6020 Coupling Chain	19.050	11.91	12.57	5.94	48.8	50.5	18.00	2.42	22.78	63.6/14455	82.1	1.18
6022 Coupling Chain	19.050	11.91	12.57	5.94	48.8	50.5	18.00	2.42	22.78	63.6/14455	82.1	1.30
8018 Coupling Chain	25.400	15.88	15.75	7.92	62.7	64.3	24.00	3.25	29.29	113.4/25773	141.8	2.38
8020 Coupling Chain	25.400	15.88	15.75	7.92	62.7	64.3	24.00	3.25	29.29	113.4/25773	141.8	2.65
8022 Coupling Chain	25.400	15.88	15.75	7.92	62.7	64.3	24.00	3.25	29.29	113.4/25773	141.8	2.91
10018 Coupling Chain	31.750	19.05	18.90	9.53	76.4	80.5	30.00	4.00	35.76	177.0/40227	219.4	4.51
10022 Coupling Chain	31.750	19.05	18.90	9.53	76.4	80.5	30.00	4.00	35.76	177.0/40227	219.4	5.51
12018 Coupling Chain	38.100	22.23	25.22	11.10	95.8	99.7	35.70	4.80	45.44	254.0/57727	314.9	8.14
12022 Coupling Chain	38.100	22.23	25.22	11.10	95.8	99.7	35.70	4.80	45.44	254.0/57727	314.9	9.95

Chain No.	Pitch	Roller diameter	Width between inner plates	Pin diameter	Pin length		Inner plate depth	Plate thickness	Tensile strength	Average tensile strength	Weight per meter
	P	d1 max	b1 min	d2 max	L max	Lc max	h2 max	T max	Q min	Q0	q
	mm	mm	mm	mm	mm	mm	mm	mm	kN/lbf	kN	kg/m
08AF36	12.700	7.95	21.70	3.96	30.8	32.1	12.00	1.50	13.8/3135	16.20	1.070
10AF13	15.875	10.16	16.31	5.08	27.6	29.1	15.09	2.03	22.2/5045	27.50	1.350
10AF71	15.875	10.16	19.00	5.08	30.5	32.2	15.09	2.03	21.8/4901	24.40	1.480
*10AF75	15.875	10.16	45.60	5.08	57.0	58.5	15.09	2.03	21.8/4901	24.40	2.540
12AF2	19.050	11.91	19.10	5.94	32.6	34.4	18.00	2.42	31.8/7227	38.20	1.900
12AF6	19.050	11.91	18.80	5.94	31.9	33.5	18.00	2.42	31.8/7227	38.20	1.870
12AF26	19.050	11.91	19.36	5.94	31.9	33.5	18.00	2.42	31.8/7227	38.20	1.940
12AF34	19.050	11.91	19.00	5.94	31.9	31.9	18.00	2.42	31.1/7066	38.20	1.860
12AF54	19.050	11.91	19.50	5.84	31.9	31.9	18.00	2.29	31.1/7066	38.20	1.607
*12AF97	19.050	11.91	35.35	5.94	48.8	50.5	18.00	2.42	31.8/7149	38.20	2.630
*12AF101	19.050	11.91	37.64	5.94	51.2	52.9	18.00	2.42	31.8/7149	38.20	1.990
*12AF124	19.050	11.91	20.57	5.94	33.9	35.7	18.00	2.42	31.8/7149	38.20	1.910
16AF25	25.400	15.88	25.58	7.92	42.4	43.9	24.00	3.25	56.7/12886	63.50	3.260
*16AF40	25.400	15.88	70.00	7.92	87.6	91.1	24.00	3.25	56.7/12886	63.50	5.780
*16AF46	25.400	15.88	36.00	7.92	53.3	56.8	24.00	3.25	56.7/12886	63.50	3.880
*16AF75	25.400	15.88	56.00	7.92	73.5	76.9	24.00	3.25	56.7/12746	63.50	5.110
*16AF111	25.400	15.88	45.00	7.92	62.7	65.8	24.00	3.25	56.7/12746	63.50	4.480
*16AF121	25.400	15.88	73.50	7.92	91.3	94.7	24.00	3.25	56.7/12746	63.50	6.000

*The number of roller depends upon the specific application

Chain No.	Pitch	Roller diameter	Width between inner plates	Pin diameter	Pin length		Inner plate depth	Plate thickness	Tensile strength	Average tensile strength	Weight per meter
	P	d1 max	b1 min	d2 max	L max	Lc max	h2 max	T max	Q min	Q0	q
	mm	mm	mm	mm	mm	mm	mm	mm	kN/lbf	kN	kg/m
*20AF44	31.750	19.05	32.00	9.53	53.5	57.8	30.00	4.00	86.7/19490	99.70	4.820
*24AF27	38.100	22.23	75.92	11.10	101.0	105.0	35.70	4.80	124.6/28010	143.20	9.810
*06BF27	9.525	6.35	18.80	3.28	26.5	28.2	8.20	1.30	9.0/2045	9.63	0.770
*06BF31	9.525	6.35	16.40	3.28	23.4	24.4	8.20	1.30	9.0/2045	9.63	0.660
*06BF71	9.525	6.35	16.50	3.28	24.5	25.6	8.20	1.30	9.0/2023	9.63	0.830
08BF97	12.700	8.51	15.50	4.45	24.8	26.2	11.80	1.60	18.0/4989.6	19.20	0.980
*08BF129	12.700	8.51	35.80	4.45	45.1	46.1	11.80	1.60	18.0/4989.6	19.02	1.500
10BF21	15.875	10.16	42.83	5.08	52.7	54.1	14.70	1.70	22.0/5000	25.30	2.260
10BF43	15.875	7.03	27.80	5.08	39.0	40.6	14.70	2.03	22.4/5090	25.76	1.140
*10BF43-S	15.875	10.00	27.80	5.08	39.0	40.6	14.70	2.03	22.4/5090	25.76	1.800
*16BF75	25.400	15.88	27.50	8.28	47.4	50.5	21.00	4.15/3.10	60.0/13488	66.00	3.420
*16BF87	25.400	15.88	35.00	8.28	54.1	55.6	21.00	4.15/3.10	60.0/13488	66.00	3.840
*16BF114	25.400	15.88	49.90	8.28	69.0	72.0	21.00	4.15/3.10	60.0/13488	66.00	4.740
*20BF45	31.750	19.05	55.01	10.19	76.8	80.5	26.40	4.50/3.50	95.0/21356	104.50	6.350
*24BF33	38.100	25.40	73.16	14.63	101.7	106.2	33.20	6.00/4.80	160.0/35968	176.00	11.840

*The number of rollers depends upon the specific application

Coupling Chain Design Features

A coupling chain is a special chain for couplings, which is characterized by the use of a common chain, which is simultaneously meshed with two parallel sprockets with the same number of teeth. In high-speed and heavy-duty power transmission, some couplings also have buffers and reductions. The role of vibration and improving the dynamic performance of the shaft system. The coupling consists of two halves, which are respectively connected with the driving shaft and the driven shaft. Most power machines are mostly connected to working machines by means of couplings. Here are some design features of coupling chains:

1. Pitch: The pitch of the coupling chain is the distance between the centers of two adjacent pins. It is an important design feature as it determines the length of the chain and the amount of power it can transmit.

2. Roller diameter: The roller diameter is the diameter of the rollers that are used to connect the links of the coupling chain. The roller diameter is important as it affects the smoothness of the chain's operation and its ability to transmit power.

3. Plate thickness: The plate thickness is the thickness of the plates that connect the rollers. The plate thickness is important as it affects the strength and durability of the coupling chain.

4. Tensile strength: The tensile strength of the coupling chain is the maximum amount of force that it can withstand before breaking. It is an important design feature as it determines the amount of power that the coupling chain can transmit.

5. Material: Coupling chains are typically made of high-strength steel or stainless steel. The material used is important as it affects the strength, durability, and corrosion resistance of the chain.

6. Lubrication: Coupling chains require regular lubrication to reduce wear and tear and prevent corrosion. The design of the chain should allow for easy lubrication and maintenance.

7. Attachment method: Coupling chains are typically attached to the shafts using sprockets or gears. The attachment method is important as it affects the alignment and operation of the coupling chain.

Benefits of Using a Coupling Chain

There are many benefits to using a coupling chain, including the following:

• Flexibility: Coupling chains are flexible and can accommodate misalignments between the shafts. This makes them ideal for applications where the shafts are not perfectly aligned.
• Strength: Coupling chains are strong and can transmit high torques. This makes them ideal for applications where high power needs to be transmitted.
• Durability: Coupling chains are durable and can withstand a lot of wear and tear. This makes them ideal for applications where the chains will be used in harsh environments.
• Easy to install and maintain: Coupling chains are easy to install and maintain. This makes them a cost-effective solution for many applications.

Coupling Chain Common Applications

Coupling chains are used in a variety of applications where power transmission is required between two shafts that are not in line with each other. Some common applications of coupling chains include:

1. Conveyor systems: Coupling chains are used in conveyor systems to transfer materials from one point to another.

2. Agricultural equipment: Coupling chains are used in agricultural equipment such as combines, harvesters, and tractors to transmit power between the engine and the wheels.

3. Industrial machinery: Coupling chains are used in various types of industrial machinery, such as pumps, compressors, and generators, to transmit power between the motor and the driven equipment.

4. Mining equipment: Coupling chains are used in mining equipment such as crushers, conveyors, and hoists to transmit power between the motor and the driven equipment.

5. Marine applications: Coupling chains are used in marine applications such as ship propulsion systems to transmit power between the engine and the propeller.

6. Automotive applications: Coupling chains are used in automotive applications such as motorcycles and bicycles to transmit power between the engine and the wheels.

7. Power transmission systems: Coupling chains are used in power transmission systems such as wind turbines and hydroelectric generators to transmit power between the turbine and the generator.

Overall, the coupling chain can be used for shafting transmission of textile, agricultural machinery, lifting transportation, engineering, mining, light industry, chemical industry, and other machinery. It is suitable for high temperatures and humid and dusty working conditions. It is not suitable for high speed and severe impact load, and When transmitting axial force, the chain coupling should work under the condition of good lubrication and protective cover.

Coupling Chain Sprockets for Coupling Chains

Coupling chain sprockets are used in conjunction with coupling chains to transmit power between two shafts. The sprockets are attached to the shafts, and the chain runs between them. The sprockets have teeth that engage with the chain links, which allows the chain to turn the shafts.

Coupling chain sprockets are available in a variety of sizes and materials, depending on the application. The size of the sprocket is determined by the size of the chain that will be used. The material of the sprocket is determined by the environment in which it will be used. For example, sprockets that will be used in a wet environment will need to be made of a material that is resistant to corrosion.

Coupling chain sprockets are an important part of any coupling chain system. They ensure that the chain turns the shafts smoothly and efficiently.

Here are some of the factors to consider when choosing a coupling chain sprocket:

(1) The type of application: The type of application will determine the size and type of sprocket that is needed. For example, a sprocket for a conveyor system would need to be larger and more durable than a sprocket for a small motor.

(2) The amount of torque: The amount of torque that needs to be transmitted will determine the size of the sprocket that is needed. A larger sprocket will be able to transmit more torque than a smaller sprocket.

(3) The misalignment: The amount of misalignment between the shafts will determine the type of sprocket that is needed. For example, a sprocket for a system with a lot of misalignment would need to be flexible so that it can accommodate the misalignment.

(4) The environment: The environment in which the sprocket will be used will determine the material of the sprocket that is needed. For example, a sprocket that will be used in a wet environment would need to be made of a material that is resistant to corrosion.

When purchasing a coupling chain sprocket, it is important to make sure that the sprocket is the correct size and type for the application. It is also important to make sure that the sprocket is made of a material that is compatible with the environment in which it will be used.

Coupling Chain Manufacturers & Suppliers

WLY is committed to manufacturing each valued customer a full range of industrial chain and sprocket products, including roller chains, conveyor chains, agricultural chains, stainless steel chains, attachment chains, sugar mill chains, palm oil chains, leaf chains, 81X chains, steel pintle chain, agricultural CA550 chain, X458 chain, agricultural combine chain, rice harvester chains, steel detachable chain, welded steel drag chain, specialty chains, sprockets, chain tools, and other related parts. WLY has more than 20 years of experience in producing and exporting industrial chains and sprockets to worldwide customers and offers solutions for application with advanced engineering knowledge.

All supplied products in WLY are produced under strict quality control procedures in accordance with the ISO9001 quality management system. The chains we supply are commonly used in power transmission, material handling, conveying, packaging, agricultural machinery, wood processing, the food industry, and a variety of other applications. Our partners are from Italy, U.S.A, Australia, Spain, Chile, Poland, Russia, Slovenia, Indonesia, Britain, Argentina, Brazil, the Philippines, Columbia, Honduras, Canada, Mexico, Serbia, Singapore, etc., and more than 80 countries all over the world.  Please do not hesitate to contact us if you are in search of coupling chains and chain couplings!