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زنجیر غلتکی دوبلکس گام کوتاه با مقاومت بالا سری EP-SP

The EP-SP Series High Strength Short Pitch Duplex Roller Chains are heavy-duty, two-strand models built to YHK specifications. They feature pitches from 25.40mm to 63.50mm, with tensile strengths ranging from 155.0kN to 1091.0kN. Their weights vary from 5.68kg/m to 38.50kg/m. With reinforced pins and thicker plates, these chains deliver exceptional load capacity and durability, making them ideal for demanding industrial transmission applications.

توضیحات

زنجیر غلتکی دوبلکس گام کوتاه با مقاومت بالا سری EP-SP

Advanced duplex roller chain engineered for precision applications requiring compact design and exceptional load-bearing performance in demanding industrial environments

1. Technical Specifications and Performance Data

مدل زنجیره‌ای Pitch (mm) Roller Diameter (mm) Chain Width (mm) Pin Diameter (mm) Chain Length (mm) Inner Plate Depth (mm) Plate Thickness (mm) Tensile Strength (kN) Weight/meter (kg)
80SPE-2 25.40 15.88 15.75 7.94 62.7 24.1 3.2 155.0 5.68
100SPE-2 31.75 19.05 18.95 9.54 76.4 30.1 4.0 231.0 8.34
120SPE-2 38.10 22.23 25.22 11.11 95.8 36.2 4.8 339.0 12.63
140SPE-2 44.45 25.40 25.22 12.71 103.3 42.2 5.6 445.5 15.92
160SPE-2 50.80 28.58 31.55 14.29 123.3 48.2 6.4 571.0 21.43
200SPE-2 63.50 39.68 37.85 19.85 151.9 60.3 8.0 892.0 35.00
80HSE-2 25.40 15.88 15.75 7.94 68.8 24.1 4.0 178.4 6.65
100HSE-2 31.75 19.05 18.95 9.54 82.7 30.1 4.8 263.6 9.71
120HSE-2 38.10 22.23 25.22 11.11 102.4 36.2 5.6 356.4 14.12
140HSE-2 44.45 25.40 25.22 12.71 109.8 42.2 6.4 463.6 17.38
160HSE-2 50.80 28.58 31.55 14.29 130.1 48.2 7.2 588.0 23.00
200HSE-2 63.50 39.68 37.85 19.85 164.9 60.3 9.5 1091.0 38.50

Note: All technical specifications conform to international roller chain standards. Central plates are press-fit assemblies. Tensile strength values represent average ultimate load capacity. SP Series variants incorporate short pitch geometry optimizing compact machinery design while maintaining structural integrity.

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2. Five Essential Advantages

Compact Design Excellence

The short pitch duplex roller chains feature a reduced pitch dimension that enables equipment designers to minimize machinery footprints while maintaining robust power transmission capabilities. This compact geometry proves invaluable in space-constrained facilities where equipment density optimization directly impacts production efficiency and facility utilization.

Dual Row Load Distribution

The double row roller chain configuration distributes mechanical loads across two parallel rows, creating redundancy that enhances reliability and extends operational intervals. This short pitch duplex roller chain design ensures that the failure of a single row does not immediately compromise system functionality, providing critical safety margins in essential applications.

High Strength Performance

High strength short pitch roller chains achieve exceptional tensile strength ratings through advanced metallurgical processes and precision engineering, delivering load capacity exceeding standard duplex roller chain specifications. The short pitch configuration maintains superior mechanical properties while minimizing component mass, optimizing power-to-weight ratios essential for dynamic applications.

Precision Synchronization

The shortened pitch dimensions of replacement short pitch duplex roller chains enable tighter synchronization with sprocket systems, reducing vibration and improving positional accuracy critical for precision machinery applications. This capability makes double row roller chain systems ideal for conveying systems requiring consistent speed maintenance and minimal oscillation.

Cost-Effective Durability

Short pitch duplex roller chains for sale deliver exceptional value through extended service intervals and reduced maintenance requirements compared to commodity alternatives. The investment in high-quality new short pitch duplex roller chains yields measurable returns through decreased downtime and lower replacement frequency over extended operational periods.

3. Duplex Roller Chain Technology

The EP-SP Series duplex roller chain represents a sophisticated engineering solution for applications demanding compact footprints combined with substantial load-carrying capacity. The term duplex roller chain refers to a two-row chain architecture where parallel rows of rollers engage simultaneously with sprocket systems, doubling the contact points and distributing loads more evenly than single-row alternatives. This short pitch duplex roller chain design achieves dimensional efficiency through reduced pitch distances while maintaining the mechanical advantages inherent to double row roller chain configurations.

Understanding what is a roller chain fundamentally requires appreciating how the duplex roller chain architecture differs from traditional single-row chains. Each roller rotates independently on precision-ground pins while the side plates provide structural integrity and load distribution pathways. The double roller chain configuration enables load sharing that reduces stress concentrations and extends component service life. In examining what is double pitch roller chain compared to short pitch variants, the distinction centers on the distance between consecutive chain pins—shorter pitch allows tighter machinery geometry and enhanced synchronization accuracy critical for precision applications across Colombian manufacturing sectors.

The replacement short pitch duplex roller chains serve as superior alternatives to inferior commodity chains through enhanced material quality and precision manufacturing. When evaluating chain double row systems, understanding what is the difference between a silent chain and a roller chain clarifies positioning—roller chains transmit power through rolling contact offering superior efficiency, while silent chains use friction-based mechanisms generating less audible noise. High strength short pitch roller chains exceed standard specifications in tensile capacity, making them suitable for applications where conventional chains experience premature degradation. The custom high strength short pitch roller chains can be engineered for specialized applications requiring dimensions beyond standard catalog offerings, providing flexibility for sophisticated machinery configurations throughout Latin America.

4. Advanced Material Technology and Composition

The EP-SP Series duplex roller chain employs sophisticated material science and precision engineering to achieve exceptional performance within compact dimensional constraints. The rollers, which bear primary load during power transmission, are manufactured from hardened carbon steel containing carefully controlled percentages of chromium and molybdenum to maximize wear resistance and fatigue strength. The short pitch duplex roller chains benefit from enhanced surface finishing processes that reduce friction and improve rolling efficiency, critical factors in applications where speed precision matters significantly.

The side plates of our double row roller chain products undergo heat treatment processes that create a complex microstructure delivering both strength and impact resistance. High strength short pitch roller chains incorporate alloy compositions specifically optimized to withstand the stress concentrations inherent in compact configurations where component masses are reduced. The pins, connecting the two rows of the duplex design, are manufactured from premium alloy steel and undergo shot peening to induce compressive residual stresses that dramatically improve fatigue resistance and extend operational lifespan under continuous duty cycles.

Surface treatments applied to new short pitch duplex roller chains include protective coatings that resist corrosion from humidity, chemicals, and salt air prevalent in diverse Colombian manufacturing environments. The material specifications for size short pitch duplex roller chains maintain consistency across the product range, enabling predictable performance characteristics whether operating in controlled indoor facilities or exposed industrial environments. Roller surface finishing achieves dimensional tolerances within micrometers, ensuring that every roller maintains a perfectly cylindrical profile essential for smooth engagement with sprocket teeth and vibration minimization. The replacement short pitch duplex roller chains incorporate the same advanced materials as original equipment, ensuring that refurbished machinery restores to its original performance specifications.

The metallurgical precision distinguishing our white short pitch duplex roller chains and black variants from inferior alternatives reflects our commitment to material quality verification. Every production batch undergoes chemical composition analysis confirming that alloy percentages meet specification requirements. The custom high strength short pitch roller chains engineered for specialized applications benefit from our ability to modify material compositions slightly to optimize performance for unique stress profiles or environmental factors. This material engineering expertise, combined with precision manufacturing processes, explains why chain double row systems from premium manufacturers achieve reliability levels significantly exceeding commodity alternatives operating in similar conditions.

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5. Mechanical Operation and Performance Principles

The operational mechanics of the EP-SP Series duplex roller chain depend on the precise synchronization between rotating rollers, fixed pins, and the reciprocating side plates that define the chain’s skeletal structure. When a drive sprocket rotates, it engages the chain rollers on the tight side of the loop, lifting them upward while the slack side descends in a continuous cycle. Unlike what is the difference between a silent chain and a roller chain mechanisms that employ sliding friction, the roller chain conveyor systems utilizing our duplex design achieve power transmission through pure rolling contact, minimizing heat generation and mechanical losses associated with friction-based alternatives.

The short pitch duplex roller chains achieve enhanced performance through their dual-row architecture where two parallel chains simultaneously engage identical sprocket teeth. This parallel engagement distributes loads more evenly than single-row alternatives, reducing stress concentrations that cause premature component failure. The double roller vs single roller comparison clarifies this mechanical advantage—each row carries approximately fifty percent of the total load rather than concentrating all load on a single chain path. The roller chain single row configurations concentrate stress on individual pins and rollers, while the duplex arrangement provides redundancy ensuring that minor wear on one row does not immediately compromise system functionality.

Understanding the mechanics requires appreciating how roller chain parts function interdependently. Each roller rotates independently on its pin shaft, distributing loads across the cylindrical roller surface rather than concentrating loads on linear contact points. The side plates remain stationary relative to the rollers while translating forward as the chain advances around the sprocket. The short pitch dimension, discussed when examining high strength short pitch roller chains specifications, refers to the center-to-center distance between consecutive pins—shorter pitches enable tighter machinery geometry while maintaining mechanical efficiency. Conveyors high strength short pitch roller chains excel in applications where space constraints demand compact equipment footprints without compromising load-carrying capacity.

The double row roller chain sprockets are specifically engineered to accommodate both chain rows simultaneously, with tooth spacing precisely matching the chain pitch dimension. The roller chain standards referenced throughout the industry establish specifications for pitch tolerances and sprocket compatibility ensuring that chains from different manufacturers provide interchangeability within defined tolerance bands. The double row roller chain replacement procedures require exact replacement with chains meeting the same pitch and width specifications as the original equipment to ensure proper engagement and load distribution. When examining roller chain parts failures, premature wear typically originates from sprocket tooth wear or misalignment rather than inherent chain deficiencies, emphasizing the importance of complete system inspection when replacing chains.

6. Industrial Applications and Operational Environments

Precision Assembly Lines

The short pitch duplex roller chains excel in automated assembly operations where consistent speed maintenance and minimal vibration are essential for product quality. The duplex design provides redundancy and reliability for uninterrupted production schedules. Colombian manufacturing facilities deploying assembly automation depend on the precision synchronization that our short pitch variants deliver, ensuring that positioning accuracy remains within tight tolerances despite extended operating periods.

Compact Machinery Systems

The compact geometry of replacement short pitch duplex roller chains enables equipment designers to minimize machinery footprints while maintaining robust power transmission. This capability proves invaluable in space-constrained facilities where floor area represents a premium asset. The high strength short pitch roller chains deliver substantial load capacity within reduced spatial dimensions, optimizing facility layout and production density.

Food and Beverage Processing

The new short pitch duplex roller chains operate reliably in food processing environments where hygiene requirements and frequent washdown procedures stress equipment. The stainless steel variants and enhanced corrosion resistance of our duplex designs maintain functionality despite repeated exposure to moisture and mild chemical cleaners. Food packaging and bottling operations depend on the reliable performance our chains deliver.

Textile and Printing Equipment

Textile machinery and printing equipment utilize short pitch duplex roller chains to transfer fabrics and paper through processing stations while maintaining precise positioning. The black short pitch duplex roller chains and colored alternatives provide visual distinction when multiple chains operate in proximity. The synchronization precision enables tight tolerances essential for pattern registration and fabric straightness.

Materials Handling and Distribution

Warehouse automation and order fulfillment systems depend on roller chain conveyor reliability to process thousands of packages daily. The duplex roller chain configuration provides the redundancy essential for uninterrupted distribution operations. Size short pitch duplex roller chains accommodate diverse conveyor configurations from light parcel handling to heavier pallet movement systems.

Automotive Component Manufacturing

Automotive production facilities utilize high strength short pitch roller chains in transfer systems, positioning devices, and parts handling equipment where load capacity and reliability directly impact production throughput. The compact dimensions enable tight equipment spacing while the robust construction withstands the continuous duty cycles characteristic of high-volume automotive manufacturing operations.

7. Regulatory Standards and Compliance Framework

The EP-SP Series duplex roller chain manufacturing adheres to international standards governing industrial chain design and performance. The production facilities maintain ISO 9001:2015 quality management system certifications, ISO 14001 environmental management standards, and ISO 45001 occupational health and safety certifications. These certifications demonstrate commitment to systematic quality control, environmental responsibility, and workplace safety across all manufacturing operations. The roller chain standards referenced throughout the industry establish minimum specifications that our products consistently exceed through enhanced material selection and precision manufacturing processes.

In Colombia specifically, industrial machinery and transmission components must comply with regulations administered by the Ministry of Commerce, Industry and Tourism regarding product safety, documentation, and technical specifications. Colombian workplace safety regulations, administered through the Colombian Occupational Health and Safety System, establish requirements for machinery guarding and operator protection. The short pitch duplex roller chains must be installed within machinery systems that provide adequate guarding to prevent operator contact with rotating chain components. Importers and equipment manufacturers utilizing these chains must ensure that complete machinery systems meet Colombian electrical safety standards and mechanical installation requirements before placing equipment into service.

European Union regulations impact Colombian industrial sectors through international trade requirements and customer preferences. The duplex roller chain products may be manufactured to satisfy CE marking requirements established by the Machinery Directive 2006/42/EC when equipment will be exported to EU markets. Low Voltage Directive 2014/35/EU establishes electrical safety requirements for drive motors and control systems. When Colombian manufacturers import equipment featuring our chains for export to European markets, complete documentation demonstrating regulatory alignment must accompany the equipment. The roller chain standards compliance ensures compatibility with EU-manufactured sprockets and transmission components.

United States regulations establish requirements through ANSI standards for roller chain design and performance verification. ANSI B29.1 establishes minimum design safety factors and testing procedures that our products exceed. Colombian facilities utilizing American equipment must ensure that replacement chains meet ANSI specifications to maintain equipment warranty coverage and manufacturer support. Conveyors high strength short pitch roller chains designed for North American applications incorporate design features and load ratings meeting ANSI B29.1 requirements, facilitating seamless integration into imported equipment systems.

Environmental regulations in Colombia administered through the National Environmental Licensing Authority establish requirements for manufacturing processes, waste management, and emissions control. The production of short pitch duplex roller chains involves metal processing activities with associated environmental considerations. Our manufacturing facilities implement pollution prevention technologies and waste minimization protocols consistent with Colombian environmental standards, ensuring sustainable production practices aligned with national environmental policy objectives and international environmental leadership expectations.

8. Our Manufacturing Capabilities

Our organization represents extensive expertise in precision chain manufacturing, combining traditional mechanical engineering knowledge with contemporary manufacturing technologies and advanced material science. The development of the EP-SP Series duplex roller chain reflects our commitment to delivering high-strength short pitch roller chains that exceed industry expectations and international standards. Our engineering teams possess deep technical knowledge encompassing chain design optimization, materials science, mechanical precision manufacturing, and tribological analysis essential for developing products that deliver reliable performance across diverse industrial applications.

The manufacturing facilities house advanced precision equipment including CNC machining centers, automated grinding systems, and specialized heat treatment furnaces designed specifically for chain component production at scales ranging from prototype development to high-volume production. Quality control processes throughout the production cycle ensure that every duplex roller chain meets dimensional specifications and performance requirements. The inspection protocols verify that roller chain parts, from individual rollers to complete assembled chains, conform to international standards governing industrial transmission components. Our commitment to consistency ensures that replacement short pitch duplex roller chains perform identically to original equipment components.

Our technical team includes experienced engineers specialized in transmission system design, chain engineering, material science, and mechanical optimization. This expertise enables the development of custom high strength short pitch roller chains engineered for specialized applications requiring dimensions or performance characteristics beyond standard catalog offerings. The understanding of roller chain conveyor system requirements, combined with knowledge of double row roller chain performance advantages and roller chain standards compliance requirements, informs our product development strategies and continuous improvement initiatives focused on reliability enhancement and cost optimization.

کارگاه

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9. Compatible Transmission Components

The EP-SP Series duplex roller chain achieves optimal system performance when integrated with compatible sprockets and transmission components engineered specifically for short pitch duplex applications. We manufacture a comprehensive range of related products that work seamlessly with the duplex roller chain to create complete power transmission systems. This integrated approach ensures mechanical compatibility, eliminates dimensional mismatches, and provides the system reliability that Colombian industrial operators require for mission-critical applications. By sourcing duplex roller chain products alongside matched sprockets and gearbox components from a single supplier, industrial customers benefit from system-level optimization, coordinated technical support, and the assurance that all components have been engineered to work together reliably.

Precision-Cut Sprockets

Our sprockets are engineered to engage perfectly with the duplex roller chain configuration, featuring tooth profiles optimized for smooth engagement and minimal impact loading. The sprocket teeth maintain precise dimensional tolerances ensuring consistent chain velocity and reduced vibration. Every sprocket is manufactured from hardened steel and undergoes precision grinding to achieve the surface finish quality essential for extended chain life and smooth operation.

The sprocket design accommodates the pitch spacing and width dimensions of our short pitch duplex roller chains, ensuring compatibility across all product variants. Available in various tooth counts and bore configurations, our sprockets facilitate seamless integration into existing machinery systems or new equipment installations. The sprocket teeth engage the duplex chain rollers without slippage, maintaining the torque transmission efficiency that defines modern industrial power transmission systems.

Compatible Sprockets

Integrated Gearbox Solutions

We produce specialized gearbox and transmission housing systems designed to integrate with duplex roller chain systems, providing speed reduction, directional changes, and power distribution functions essential in sophisticated machinery applications. The gearbox designs accommodate the load ratings and speed profiles of our high strength short pitch roller chains, ensuring that the complete transmission system operates as a unified, optimized assembly.

Our engineering team designs custom gearbox configurations matching the specific performance requirements of diverse applications. The integrated design approach eliminates compatibility issues and ensures maximum system efficiency. Whether you require standard configurations or custom engineering for specialized applications, our gearbox solutions provide the versatility and performance that Colombian industrial operations demand.

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سوالات متداول


Selecting the correct duplex roller chain model requires evaluating three primary factors: the total load including machinery mass and processed materials, the operating speed determining torque requirements, and the pitch dimension needed for compatibility with existing equipment. Start by calculating maximum load, then identify the minimum tensile strength requirement from the technical specifications comparing different models. Choose a chain with tensile strength exceeding your calculated requirement by at least twenty-five percent to ensure adequate safety margins. The short pitch duplex roller chains require verification that your existing sprockets match the pitch dimensions—mismatched pitch creates inadequate engagement and rapid wear. If uncertain about selection, our technical team can provide engineering consultation reviewing your machinery specifications and recommending the optimal chain model for your specific application requirements.


The fundamental difference between a silent chain and a roller chain lies in their power transmission mechanisms. Silent chains use friction between laminated steel plates pressed against each other to transmit rotational force, while roller chains transmit power through rolling contact between rotating rollers and sprocket teeth. The roller chain design generates significantly less heat during operation, requiring simpler lubrication approaches and achieving higher mechanical efficiency. What is double pitch roller chain refers to chains with twice the standard pitch dimension, useful for very slow-speed applications. Silent chains operate more quietly, making them suitable for noise-sensitive environments, but roller chain conveyor systems deliver superior load capacity and extended service intervals. For high-volume industrial operations where reliability trumps noise considerations, duplex roller chain systems are the industry standard.


Purchasing quality new short pitch duplex roller chains requires working with suppliers who understand both technical specifications and Colombian regulatory requirements for industrial equipment. Direct sourcing from manufacturers eliminates intermediaries and provides access to technical expertise and engineering services. When evaluating suppliers, verify their certifications for quality management systems, experience with duplex roller chain applications in comparable industries, and capability to provide rapid delivery and technical support. Request sample chains or test units before placing large orders, and confirm the supplier provides complete technical documentation including material certifications and performance verification results. Reputable manufacturers offering short pitch duplex roller chains for sale will provide engineering consultation and assist with integration into your existing machinery systems. Building relationships with established suppliers ensures access to technical support when replacement situations arise unexpectedly.


The roller chain single row concentrates all load on a single chain path, creating stress concentrations on individual pins and rollers. Double roller vs single roller comparisons highlight how duplex configurations distribute load across parallel rows, with each row carrying approximately fifty percent of total load. This load sharing reduces component stress levels significantly, extending operational lifespan and improving system reliability. Single-row chains prove adequate for applications with moderate load requirements and intermittent operation. However, industrial operations requiring continuous duty cycles or handling substantial loads benefit substantially from the redundancy and load distribution that double row roller chain designs provide. The size short pitch duplex roller chains achieve load capacity equivalent to much larger single-row alternatives, enabling compact machinery designs without sacrificing strength.


Modifying replacement short pitch duplex roller chains to fit non-standard equipment generally produces unsatisfactory results and compromises safety and reliability. Modifications altering the duplex geometry—such as removing links to shorten chains or welding additional links for extension—eliminate the stress distribution that makes the design effective. Link removal concentrates stress at remaining connection points, causing premature failure. Rather than attempting modifications, work with engineers to identify standard high strength short pitch roller chains fitting your equipment requirements, or consider sprocket modifications allowing use of standard chains. For truly unique dimensions, contact manufacturers about custom engineering options where duplex roller chain products can be engineered specifically for your application, ensuring proper stress distribution and component compatibility. Field modifications typically result in poor performance, increased maintenance, and potential equipment failure.


The roller chain standards referenced throughout industrial sectors establish minimum requirements for dimensional accuracy, material composition, and performance verification that guide our manufacturing processes. International standards such as ISO 606 establish specifications for pitch dimensions, roller diameters, and tensile strength ratings ensuring interchangeability among manufacturers. Our engineering team incorporates these standards as minimum baselines, developing high strength short pitch roller chains that exceed standard requirements in critical performance areas including material purity, manufacturing tolerances, and fatigue resistance. Compliance with roller chain standards facilitates replacement chain sourcing when purchasing replacement short pitch duplex roller chains, allows customers to specify chains using standardized nomenclature, and ensures seamless integration into existing machinery systems. Understanding the regulatory framework established by these standards helps Colombian industrial operators make informed purchasing decisions and confirms that selected chains will perform reliably in their specific applications.

تدوینگر: PXY