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Forged Chain & Cardan Chain

HomeForged Chain & Cardan ChainX348 X458 X678 Drop Forged Chain

X348 X458 X678 Drop Forged Chain

Chain Type: Heavy-duty Drop Forged Chain (for rivetless & conveyor applications)

Chain Sizes: X348, X458, X678 and other standard formats

Material: Alloy steel forged links with case-hardened pins & sidebars

Heat Treatment: Surface hardened + core tempered for wear & fatigue resistance

Application: Overhead, trolley & bulk conveyor systems in industrial material handling

Model: X348 X458 X678
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The Drop Forged Chain is a premium industrial chain crafted through precision forging and heat-treatment processes to deliver exceptional strength, durability, and wear resistance. Engineered for the most demanding conveyor systems, this chain adapts to heavy-duty material handling tasks across mining, bulk logistics, automotive assembly, and other industrial sectors.

Available in popular sizes such as X348, X458, and X678, the Drop Forged Chain provides reliable load-bearing performance with excellent fatigue life and serviceability. Its robust forged construction ensures consistent operation, minimal elongation under load, and ease of installation or maintenance—making it a trusted solution for overhead conveyors, trolley lines, and custom power transmission systems.

Characteristics of DCC Drop Forged Chain

High Tensile Strength: Each Drop Forged Chain link is made from specially alloyed steel with case-hardened surfaces and ductile cores, providing exceptional tensile strength and resistance to breakage under heavy loads.

Superior Wear Resistance: Precision heat treatment delivers a hard exterior surface that withstands high abrasion and long wear life, reducing the frequency of replacements and maintenance.

Shock & Impact Durability: The balance of surface hardness and ductile core increases shock resistance, ensuring reliable chain performance in systems with frequent starts/stops or high dynamic loads.

4B Components

Flexible Assembly: Designs like X348, X458, and X678 include features such as loose-link or rivetless construction, enabling easier chain disassembly/assembly when needed, reducing downtime.

Versatile Sizes & Attachments: Available in multiple sizes and attachment options, this Drop Forged Chain can be adapted for specific conveyor designs and material handling requirements.


Specification Parameters of DCC Drop Forged Chains


Drop Forged Chain Structure diagram


Standard

Chain No.

Reference pitch P (mm)

Diameter of pin d2 (mm)

Length of pin L (mm)

Standard length (min/max) (mm)

Number of pitch within standard length

Sideward bending angle α (°)

Width of sidebar h2 (mm)

Tensile strength (KN)

Weight per meter (kg/m)

British system series

X348

76.6

12.7

47

3050.5/3095.2

40

9

27

98

2.7

X458

102.4

16

58

3063.1/3090.2

30

9

35

187

5.2

468H

102.4

19.5

84.1

3063.1/3090.2

30

9

47.8

311.7

11.5

X678

153.2

22.3

77

3055.1/3082.8

20

7

51.6

318

9.5

698

153.2

28

95.3

3055.1/3082.8

20

7

60

515

17

698H

152.4

39

154

3039.2/3066.6

20

7

72

1078

37.7

Metric system series

F100X16

100

15.5

77

2991.3/3018.3

30

9

35

187

4.7

F100X17

100

17

77

2991.3/3018.3

30

9

35

187

4

F160X24

160

23.5

96

3190.7/3219.5

20

7

51.6

318

10.3

British system series

X348

76.6

12.7

47

3050.5/3095.2

40

9

27

98

2.7

X458

102.4

16

58

3063.1/3090.2

30

9

35

187

5.2

468H

102.4

19.5

84.1

3063.1/3090.2

30

9

47.8

311.7

11.5

X678

153.2

22.3

77

3055.1/3082.8

20

7

51.6

318

9.5

698

153.2

28

95.3

3055.1/3082.8

20

7

60

515

17

698H

152.4

39

154

3039.2/3066.6

20

7

72

1078

37.7

Metric system series

F100X16

100

15.5

77

2991.3/3018.3

30

9

35

187

4.7

F100X17

100

17

77

2991.3/3018.3

30

9

35

187

4

F160X24

160

23.5

96

3190.7/3219.5

20

7

51.6

318

10.3


Performance Indicators of DCC Drop Forged Chains

Service Life

Our drop forged chains utilize automatic welding technology, high-frequency heating treatment, and corrosion-resistant surface processes, have a longer lifespan compared to ordinary chains, especially in environments with severe wear and harsh conditions.

Operating Speed Range

Suitable for various operating speed ranges, it can run stably whether at low speeds for precise conveyance or at medium to high speeds for grain processing, thus avoiding chain damage or reduced transmission efficiency due to mismatched speeds.

Temperature Adaptation Range

Designed for extreme environments, our drop forged chains can operate across a wide temperature range, from -40°C to +300°C.

Anti-corrosion Performance

Thanks to precise surface treatment processes, our drop forged chainss have excellent corrosion resistance, making them particularly suitable for environments with high humidity and strong corrosive conditions.

Wear Resistance

Using high-frequency heating and surface reinforcement, long-term use ensures no significant wear or performance degradation.

Noise Level

Precise welding techniques and stable structural design reduce friction and collisions between chains, thereby lowering mechanical noise and improving the working environment in factories.



Applications of Forged Chains

Overhead & Trolley Conveyors: Ideal for automotive lines, assembly systems, and enclosed track conveyors with complex routing.

Drag & Bulk Material Conveyors: Handles coal, ash, cement, minerals and other bulk materials in en-masse or trough conveyors.

Steel, Mining & Heavy Industry: Suited for rugged environments requiring high strength and wear tolerance.

Manufacturing & Assembly Lines: Efficient for product transfer and material movement in industrial production systems.


Certification and Standards

As leading drop forged chains manufacturer, DONGCHUAN has obtained multiple international quality certifications, including ISO 9001 and CE certification. Each batch of products undergoes rigorous quality control and testing to ensure compliance with industry standards and provide reliable quality assurance to customers.


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Why choose us?

Excellent Quality Assurance System

Our company has successfully obtained API and ISO 9001 certifications, ensuring that all products meet international standards.

Efficient Service and Superior Cost-effectiveness

DONGCHUAN drop forged chainss establish extensive collaboration with Changzhou University, for Digital Design and Production Engineering of Chain Transmission. we have significantly improved production efficiency and effectively reduced production costs.

International Service and Global Customer Support

In the course of more than 10 years of operation, we have provided consistent quality and cost-effective products to more than 40 countries and regions around the world, and won a wide range of trust and praise.

Innovation and Continuous Improvement

Committed to technological innovation and continuous improvement, we consistently stay at the forefront of industry technology development.

After-sales Service

We focus not only on short-term cooperation but also on establishing long-term, stable partnerships with our clients.Our products come with a warranty period of up to 24 months.


FAQ

Q1: What defines a Drop Forged Chain compared to welded chain?

A1: A Drop Forged Chain is manufactured by forging alloy steel links and heat treating them for superior strength, wear resistance, and durability compared with conventional welded conveyor chains.

4B Components


Q2: What do X348, X458, and X678 mean?

A2: These codes represent standard chain sizes/pitch formats of Drop Forged Chain, with increasing pitch and load capacity — X348 for lighter to medium loads, X458 for medium to heavy, X678 for heavy industrial conveyor use.

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Q3: Can this chain be used in curved or vertical conveyor sections?

A3: Yes, versions like rivetless X-type designs support multidirectional flexibility, suitable for horizontal, incline, and vertical runs.

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Q4: How should I maintain a Drop Forged Chain?

A4: Regular lubrication, tension checks, and inspection for wear or fatigue on links and pins help ensure long service life and reliable operation.


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