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L125A En-masse Scraper Chain (FU200 Conveyor Professional Industry Introduction)
1. Industry Background & Product Positioning
En-masse scraper conveying systems have long been recognized as one of the most reliable, environmentally friendly, and cost-effective bulk material handling solutions in the global powder and granular material processing industry. Unlike belt conveyors and screw conveyors that are limited by structural defects such as poor sealing, large material residue, and unsuitability for long-distance continuous transportation, enclosed en-masse conveyors adopt a fully sealed trough body and chain scraper traction structure, which enables stable, dust-free, and low-loss transportation of various bulk materials. The entire conveying process is completed inside a closed metal casing, which effectively avoids material waste, airborne dust pollution, and material moisture changes caused by external environmental interference.
The L125A scraper chain is the standard core traction component specially developed and matched for the classic FU200 series horizontal and low-inclination en-masse conveyors. It belongs to the heavy-duty welded bent-plate scraper chain category and occupies a mainstream core position in medium and light-duty bulk material conveying equipment worldwide. As the key moving part that bears tensile force, impact force, friction load and cyclic operation load throughout the entire conveyor system, the performance, material technology, heat treatment level and structural stability of the L125A chain directly determine the overall operating efficiency, failure rate, service life and maintenance cycle of the FU200 conveyor. Therefore, it is widely regarded as the “heart component” of the FU200 en-masse conveyor in the material handling industry.
2. Detailed Product Overview & Working Principle
The L125A welded bent-plate scraper chain is a customized circulating traction chain designed for continuous en-masse conveying working conditions. Different from ordinary standard transmission chains, this scraper chain is optimized and upgraded in structural design specifically for long-term friction, material impact and cyclic tension in bulk material conveying scenarios. The chain operates in a double-strand parallel layout inside the sealed conveyor trough, with special wear-resistant scrapers fixed across the double chains through high-strength bolts. When the driving sprocket drives the chain to circulate continuously, the rigid scrapers push and drag the stacked powder and granular materials forward in a layered and orderly manner, realizing continuous, quantitative and stable material transportation.
The working principle of en-masse conveying is based on the internal friction and pressure characteristics of bulk materials. Under the slow and stable traction of the scraper chain, the internal friction force between materials is greater than the friction resistance between materials and the trough wall, so the materials move forward as a whole mass instead of being scattered or rolling. This working principle ensures extremely low material breakage rate and stable conveying capacity, which is very suitable for bulk materials that require complete particle shape and stable conveying volume. The L125A chain is perfectly adapted to this working mode through precise pitch design, high-strength alloy material configuration and anti-fatigue structural technology, ensuring long-term stable operation under 24-hour continuous industrial working conditions.
3. Complete Technical Parameters & Manufacturing Standards
The L125A scraper chain is manufactured in strict accordance with international conveyor chain industry standards and national heavy machinery manufacturing specifications, with standardized and precise parameter indicators to ensure universal compatibility and interchangeability with all brand FU200 en-masse conveyors in the market.
- Model Specification: L125A Standard Bent-plate En-masse Scraper Chain
- Standard Pitch: 125mm (uniform pitch ensures precise sprocket meshing and stable operation)
- Ultimate Breaking Load: 113kN (super high tensile strength, effectively prevents chain breakage under overload and impact conditions)
- Chain Linear Weight: Approximately 18.5kg per meter, with stable load-bearing per unit length
- Roller Outer Diameter: 31.8mm, thickened and wear-resistant roller design to reduce sliding friction
- Pin Shaft Diameter: 14.5mm, thickened high-strength pin shaft to enhance shear resistance and fatigue resistance
- Main Material: High-grade 40Cr / 42CrMo alloy steel, which has far better toughness, hardness and wear resistance than ordinary carbon steel
- Professional Heat Treatment Process: Integral quenching and tempering treatment is adopted for the entire chain plate and pin shaft to ensure overall structural toughness; meanwhile, high-frequency surface quenching is carried out on the contact and friction parts, achieving the dual performance of tough core and hard surface
- Surface Anti-corrosion Treatment: Standard process is black oxide finishing and anti-rust oil immersion to prevent oxidation and rust during storage and operation. Customized surface treatments such as hot-dip galvanizing, electric galvanizing and Dacromet coating are available for humid, outdoor and corrosive working environments
- Supporting Equipment: Fully compatible with FU200 horizontal and inclined en-masse conveyors, suitable for standard and modified models
4. Professional Structural Composition & Design Advantages
The L125A scraper chain adopts an integrated welded bent-plate structure, which is composed of inner link assemblies, outer link assemblies, high-strength pin shafts, thickened wear-resistant sleeves, integral bent link plates and integrated scraper mounting bases. All structural parts are precisely processed by CNC machine tools, with tight assembly clearance and strong overall structural consistency. Different from traditional assembled chains, the sleeves of the L125A chain are firmly welded to the bent link plates as a whole, which greatly improves the structural rigidity and impact resistance of the chain and avoids sleeve loosening, falling off and displacement faults that are easy to occur in ordinary chains during long-term vibration and impact operation.
In actual industrial operation, the chain adopts double-strand parallel synchronous operation, and the customized scraper is installed across the two chains through high-strength anti-loosening bolts. The cross-span structural design of the scraper ensures uniform stress, stable material pushing and no material leakage or missing conveying. At the same time, the modular assembly design realizes independent replacement of single chain links and single damaged parts. When individual links are worn or damaged, there is no need to replace the entire chain, which greatly reduces equipment maintenance time, spare parts cost and production downtime loss for industrial enterprises.
5. Core Performance Advantages & Industrial Value
As a mainstream medium-duty conveyor chain in the bulk material handling industry, the L125A scraper chain has multiple core performance advantages that meet high-standard industrial production requirements, and its comprehensive performance is far superior to ordinary carbon steel chains and ordinary transmission chains.
First, excellent wear resistance and ultra-low elongation performance. Made of high-quality alloy steel and matched with professional integral heat treatment and surface hardening technology, the chain has extremely strong friction resistance and tensile fatigue resistance. During long-term 24-hour continuous operation, the permanent elongation rate is extremely low, which can effectively avoid chain loosening, sprocket jumping, chain derailment and unstable conveying capacity caused by chain stretching. It greatly improves the continuous operation stability of the conveyor equipment.
Second, ultra-stable operation and low noise design. The chain pitch is strictly controlled within international standard tolerance ranges, and the meshing fit with the driving and driven sprockets is precise and smooth. The overall operation vibration is small, the running noise is low, and there is no jamming or impact noise. It is very suitable for factory continuous production lines that require low noise and stable operation.
Third, fully enclosed environmental protection conveying capability. Cooperating with the fully sealed shell of the FU200 conveyor, the L125A scraper chain realizes fully enclosed material transportation. There is no dust overflow, no material scattering and no environmental pollution during the entire conveying process. It fully meets the environmental protection production standards of modern factories and solves the dust pollution problem prevalent in traditional open-type conveying equipment.
Fourth, strong personalized customization adaptability. According to different material characteristics and working conditions, we can customize the thickness, width and material of the scraper. Optional scraper materials include ordinary carbon steel, anti-rust stainless steel SS304, and high-wear-resistant polymer plastic plates. For special corrosive materials, humid environments and food-grade conveying scenarios, we can provide full stainless steel L125A chain solutions to meet diversified industrial application needs.
Applicable mainstream materials include: grain wheat, corn granules, rice grains, various feed granules and feed powder, power plant fly ash, cement raw meal, cement clinker fine powder, wood chips, wood powder, biomass fuel particles, chemical industrial powder and other similar bulk materials. In these working conditions, the chain operates stably with low wear, long service life and extremely low failure rate.
First, regular tension detection and adjustment are required. After long-term cyclic operation, the chain will have slight normal elongation. When the overall elongation rate exceeds 3% of the original standard length, it is necessary to timely adjust the conveyor tensioning device to eliminate chain slack, prevent chain jumping, derailment and uneven material conveying, and ensure synchronous and stable operation of the double-strand chain.
Pub Time : 2026-10-09 09:36:39
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Contact Details
Hangzhou Ocean Industry Co.,Ltd
Contact Person: Mrs. Lily Mao
Tel: 008613588811830
Fax: 86-571-88844378