Extended Pin Chains
Extended pin chains are developed from standard chains, featuring pins extended on one or both sides to provide dual functions of power transmission and attachment support. They are specifically designed for applications such as overhead conveying, waste handling systems, automotive assembly lines, painting lines, brick production, and wood processing equipment. Suitable for high-dust, high-humidity, heavy-load, and frequent start-stop conditions, these chains meet the demands for quick attachment mounting, bulky material conveying, and enhanced torsional resistance.
Product Overview
Thickened high-strength link plates, combined with optimized pitch and extended pins, enhance torsional rigidity, making the chain ideal for long spans, multiple curves, and frequent start-stop heavy-duty applications.
Standardized extended pins enable quick installation of pushers, hooks, or scrapers without welding or drilling, improving assembly efficiency.
Equipped with cotter pins or retaining rings to prevent loosening of attachments, ensuring safe operation under high-speed or vibration conditions.
High-quality alloy steel pins undergo carburizing, quenching, and surface hardening treatments to resist wear and extend service life.
Resistant to dust, moisture, and corrosion. Special-grade steel prevents brittle fracture at low temperatures, maintaining high toughness even in sub-zero environments.
Manufactured in accordance with ISO 9001 standards, with third-party inspection reports (e.g., SGS, BV) available to ensure consistency and reliability.
Application Scenarios
Used in waste conveying, sorting, and processing systems. Resistant to high humidity, corrosion, and impact loads. Extended pins facilitate the installation of scrapers or pushers, while the anti-detachment design ensures continuous and safe material handling.
Suitable for overhead conveyor lines in automotive and appliance industries. Extended pins allow quick installation of hooks or hangers, enabling efficient in-line painting, drying, and assembly with smooth, jam-free operation.
Designed for vehicle and component assembly lines. High-strength link plates with torsion-resistant design handle frequent start-stop and heavy loads. Extended pins enable quick installation of dedicated tooling to support flexible manufacturing.
Applied in powder coating and electrophoretic painting systems. Resistant to high temperatures and chemical corrosion. Extended pins support quick fixture replacement, while optional self-lubrication reduces paint adhesion and ensures surface quality.
Suitable for brick forming machines and woodworking conveying equipment. Hardened wear-resistant pins withstand abrasion from sand and wood debris. Extended pins allow installation of scrapers or pushers for smooth handling of bulky materials.
Used in multi-level shuttle systems and loop sorting lines. Low-noise, low-wear design ensures reliable operation at high speeds and along multiple curves. Extended pins allow easy installation of stops or push plates, improving sorting efficiency and system flexibility.
Full Series Specifications
Common specifications for Extended Pin Chains are listed below. Custom sizes and non-standard options are available upon request. Please contact us for more details.
| ISO Chain No. | DIN Chain No. | P | b1 | d2 | L3 | L | Lc | |||
| mm | mm | mm | mm | mm | mm | |||||
| 120 | 24A | 38.100 | 25.22 | 11.10 | 28.6 | 76.4 | 80.4 | |||
| 140 | 28A | 44.450 | 25.22 | 12.70 | 33.3 | 84.8 | 89.4 | |||
| 160 | 32A | 50.800 | 31.55 | 14.27 | 38.1 | 99.6 | 104.4 | |||
| 24B | 24B | 38.100 | 25.40 | 14.63 | 50.7 | 101.4 | 105.8 | |||
| 28B | 28B | 44.450 | 30.99 | 15.90 | 61.9 | 124.0 | 128.4 | |||
| 32B | 32B | 50.800 | 30.99 | 17.81 | 64.8 | 126.8 | 131.8 | |||
| Matech Chain No. | P | b1 | d2 | d3 | L3 | L | Lc | d4 |
| mm | mm | mm | mm | mm | mm | mm | mm | |
| 38×89×25 | 38.100 | 25.22 | 11.10 | 11.10 | 42.00 | 89.80 | - | 4.00 |
| 38×156×25 | 38.100 | 25.40 | 14.63 | 14.63 | 99.60 | 156.60 | - | 4.00 |
| 50×106×31 | 50.800 | 31.55 | 14.27 | 18.00 | 45.00 | 106.80 | - | - |
| Matech Chain No. | P | b1 | d3 | L2 | L3 | L | ||
| mm | mm | mm | mm | mm | mm | |||
| 38×81×25 | 38.100 | 25.40 | 14.63 | 16.70 | 16.70 | 81.00 | ||
| 44×98×30 | 44.450 | 30.99 | 15.90 | 20.00 | 20.00 | 98.70 | ||
| 50×134×31 | 50.800 | 31.55 | 14.27 | 38.10 | 38.10 | 134.50 | ||
| 63×180×38 | 63.500 | 38.10 | 22.89 | 21.56 | 21.56 | 180.00 | ||
| Matech Chain No. | P | b1 | d2 | d4 | L2 | L | |||||||
| mm | mm | mm | mm | mm | mm | ||||||||
| 38×130×25 | 38.100 | 25.22 | 11.10 | 2.50 | 42.35 | 130.00 | |||||||
| Matech Chain No. | P | b1 | d2 | d3 | d4 | L3 | L | Pt | |||||
| mm | mm | mm | mm | mm | mm | mm | mm | ||||||
| 50×197×31 | 50.800 | 31.55 | 14.27 | 14.27 | 4.00 | 77.89 | 197.00 | 58.55 | |||||
| Matech Chain No. | P | b1 | d2 | d4 | L2 | L | Pt | ||||||
| mm | mm | mm | mm | mm | mm | mm | |||||||
| 38×176×25 | 38.100 | 25.22 | 11.10 | 2.40 | 42.60 | 176.00 | 45.44 | ||||||
| Matech Chain No. | P | b1 | d2 | d3 | L | L2 | L3 | ||
| mm | mm | mm | mm | mm | mm | mm | |||
| 38×149×25 | 38.100 | 25.40 | 14.63 | 14.63 | 149.20 | 50.80 | 47.65 | ||
| 38×143×25 | 38.100 | 25.40 | 14.63 | 14.63 | 143.20 | 47.65 | 43.55 | ||
| 44×106×25 | 44.450 | 25.22 | 12.70 | 12.60 | 106.00 | 28.70 | 25.70 | ||
| Matech Chain No. | P | b1 | d2 | d3 | L3 | L | d6 | ||
| mm | mm | mm | mm | mm | mm | mm | |||
| 38×101×25 | 38.100 | 25.22 | 11.10 | 25.00 | 50.00 | 101.80 | 18.00 | ||
| 38×151×25 | 38.100 | 25.22 | 11.10 | 25.00 | 100.00 | 151.80 | 18.00 | ||
| 38×102×25 | 38.100 | 25.22 | 11.10 | 25.00 | 50.00 | 102.00 | 18.20 | ||
| 38×152×25 | 38.100 | 25.22 | 11.10 | 25.00 | 100.00 | 152.00 | 18.20 | ||
| Matech Chain No. | P | b1 | L | L3 | L4 | d2 | d3 | d4 | d5 | ||
| mm | mm | mm | mm | mm | mm | mm | mm | mm | |||
| 38×77×25 | 38.100 | 25.30 | 77.00 | 25.00 | 3.00 | 11.10 | 11.00 | 3.00 | 14.00 | ||
| Matech Chain No. | P | b1 | L | L2 | d3 | Pt | |||||||
| mm | mm | mm | mm | mm | mm | ||||||||
| 44×172×30 | 44.450 | 30.99 | 172.20 | 27.00 | 15.90 | 59.56 | |||||||
| 76×208×48 | 76.200 | 48.20 | 208.00 | 16.60 | 23.81 | 87.83 | |||||||
Customized Services
Need something beyond standard models? We offer complete custom solutions—from bore diameter and materials to attachments and pitch—designed for your application. All dimensions can be customized. Contact us for special requirements.
| Customization Item | Options | Description |
| Material | Carbon steel, alloy steel, 304 stainless steel, 316 stainless steel | Select based on corrosion resistance and strength requirements. |
| Surface Treatment | Black oxide, blue-white zinc plating, yellow zinc plating, Dacromet coating, natural stainless steel finish, nickel plating | Improves corrosion resistance and extends service life |
| Link plate thickness, link plate height, inner width, widened/thickened link plates | Customizable | Enhanced load capacity |
| Length | Any length available (MOQ negotiable) | Available in cut-to-length or coil packaging |
| Pin Structure | Extended Plain Pin / Single-End Threaded Pin / Double-End Threaded Pin / Pin with Retaining Ring Groove / Stepped Pin | Designed to meet diverse conveying needs |
| Attachment Type | Single-Side Extended Pin / Double-Side Extended Pin / Interval Extended Pins (Every 2, 3, or 5 Pitches) | |
| Connection type | Spring Retaining Ring / Cotter Pin / Bolted Locking / Fully Riveted Structure | |
| Operating structure | Optional configurations include side guide rollers, support rollers, and double-deck conveying structures. | |
| Bent plate attachment | A1/K1 Single-Side Bent / A2/K2 Double-Side Bent / F-Type / Custom Designs | |
| Temperature Resistance | High-Temperature Type (≤300°C) / Low-Temperature Type | Special heat treatment or material selection |
| Matching Sprockets | Various tooth counts and materials available; tooth hardening available | Ensures perfect compatibility with the drive system |
Quality Inspection Equipment
At Matech, we have established a modern manufacturing facility dedicated to Extended Pin Chains for complex conveying systems. From precision blanking and induction hardening of pin ends to continuous controlled-atmosphere carburizing furnaces, fully automated attachment riveting lines, and pre-tensioning run-in test rigs, every process is specifically optimized for frequent start-stop operations, multi-curve layouts, and dusty environments. This ensures excellent torsional rigidity, reliable attachment connections, and long-term operational stability.
Our quality control system is equipped with spectrometers, metallographic microscopes, microhardness testers, and pin torsion testing machines, enabling comprehensive inspection of chemical composition, microstructure, case depth, and torsional performance. Attachment riveting machines monitor riveting force in real time, while anti-detachment validation rigs simulate retention performance under vibration. Multi-curve fatigue testing systems further simulate actual operating conditions.The synergy of advanced manufacturing processes and dedicated full-cycle testing establishes our leadership advantage in automated conveying systems.
Frequently Asked Questions
1
What is the main difference between extended pin chains and standard industrial chains?
① Extended pin chains feature pins extended significantly beyond the link plates on one or both sides, serving as direct mounting interfaces for attachments. Attachments such as pushers or hooks can be quickly installed on the extended pins without secondary processing. In contrast, standard industrial chains require additional welding, drilling, or intermediate connectors, resulting in more complex procedures and potential chain damage.
② Extended pin chains are specifically engineered to withstand bending moments and lateral forces, offering superior torsional rigidity. Standard industrial chains, however, are primarily designed to carry tensile loads between links, with limited resistance to torsion, lateral forces, and bending stresses.
② Extended pin chains are specifically engineered to withstand bending moments and lateral forces, offering superior torsional rigidity. Standard industrial chains, however, are primarily designed to carry tensile loads between links, with limited resistance to torsion, lateral forces, and bending stresses.
2
What materials are used in Matech’s extended pin chains?
Standard models are manufactured from high-strength alloy steel. For extreme conditions, manganese-alloy or stainless steel options are available to enhance impact resistance and corrosion protection. Pins and bushings are made from precision seamless steel, ensuring high dimensional accuracy and wear resistance. Custom material configurations can be provided upon request.
3
How does Matech ensure the quality and reliability of the chains?
We follow the ISO 9001 quality management system, controlling every stage from raw material selection to final assembly. Advanced testing equipment, including spectrometers, hardness testers, and torsion testing machines, is employed to verify mechanical properties and dimensional accuracy. Third-party inspection reports (e.g., SGS, BV) are available to certify compliance with international standards.
4
What maintenance or precautions are required for high-load or high-speed applications?
Chains are engineered for heavy-duty and high-speed conveying, but regular lubrication of pins and links is recommended to reduce wear and friction. Anti-detachment mechanisms and attachments such as pushers, hooks, or scrapers should be checked for secure installation. Continuous operation beyond rated load should be avoided, and periodic fatigue and wear inspections conducted to ensure smooth, reliable operation and extend service life.
5
What precautions should be taken when using extended pin chains in dusty or high-humidity environments?
It is recommended to use dust-resistant seals or self-lubricating bushings to minimize dust ingress. For humid or corrosive conditions, stainless steel materials or Dacromet/nickel-plated surface treatments are advised. Regular inspection of attachment locking and chain elongation is recommended to ensure long-term, stable operation.
Contact Us
To purchase or customize the Extended Pin Chains, please fill out the form below. Our team will get back to you within 24 hours.
Send E-Mail If You Need Any HelpProfessional Manufacturer of Precision Metal Parts & Conveyor Chains
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