Anhui Huihuang Chain Transmission Co., Ltd. is one of the leading manufacturers and suppliers of fu series alloy steel scraper conveyor chain in China, featured by quality products and good service. If you're going to wholesale advanced fu series alloy steel scraper conveyor chain made in China, welcome to get pricelist and free sample from our factory. We also accept customized orders.
Product Overview
intended for continuous, high-capacity bulk materials transportation in the mining, grain processing, coal power, and cement sectors. To reduce operational downtime under high shock loads, HHChains' FU Series Scraper Conveyor Chains have precision-forged alloy steel links, sophisticated continuous heat treatment, and adjustable scraper flights (U-type, V-type, and O-type).
The essential part of FU type en-masse scraper conveyors is the FU series scraper chain. Solid steel link plates and welded U-shaped scraper hooks make up its construction. The scrapers force granular and powdery materials into the sealed conveyor housing while they are operating. extensively used for material transportation that is both horizontal and slightly sloped. FU150, FU200, FU270, FU350, FU410, FU500, FU600, and FU800 are examples of standard models. The standard material is alloy steel that has been heat-treated to improve wear resistance. For corrosive settings, stainless steel versions are offered.
Complete FU Series Technical Specification Table
|
Chain Model |
Pitch P (mm) | Inner Width b1 (mm) | Pin Dia d (mm) | Ultimate Tensile Strength (kN) | Recommended Max Length (m) | Material Handling Capacity (m³/h) |
| FU150 | 63.5 / 100 | 35 | 14 | ≥ 120 | 40 | 6 – 15 |
| FU200 | 100 / 125 | 45 | 18 | ≥ 220 | 50 | 15 – 35 |
| FU270 | 125 / 160 | 55 | 22 | ≥ 340 | 60 | 35 – 70 |
| FU350 | 160 / 200 | 70 | 26 | ≥ 500 | 70 | 70 – 130 |
| FU410 | 200 | 80 | 30 | ≥ 670 | 80 | 120 – 210 |
| FU500 | 200 / 250 | 95 | 34 | ≥ 850 | 90 | 200 – 340 |
| FU600 | 250 | 110 | 38 | ≥ 1100 | 100 | 320 – 500 |
Custom scraper attachments (U-type, V-type, O-type flights) and stainless steel / high-temp alloy materials are available upon request.
Advantages
Robust welded U-type scrapers, strong pulling force, anti-deformation
Heat-treated alloy steel links, excellent wear & impact resistance
Closed conveying reduces dust pollution, eco-friendly
Complete standard FU sizes, non-custom scraper dimensions supported
Suitable for powder, particle bulk material transportation
High-Performance Metallurgy & Precision Heat Treatment
HHChains chooses premium alloy steel (20CrMnTi, 40Cr, or 42CrMo) with multi-stage heat treatment to endure extreme friction and tension during bulk material handling:
Controlled Atmosphere Carburizing & Quenching :
1 Case Hardness Depth : Controlled within 1.8 mm – 3.2 mm (customizable up to 4.5 mm for extra pitch sizes).
2 Surface Hardness : 58 – 62 HRC, providing outstanding resistance against abrasive wear from clinker, quartz sand, and coal dust.
3 Core Hardness: Maintains a tough, ductile core at 32 – 40 HRC to absorb continuous impact loads and prevent sudden brittle breakage.
Induction Hardening for Pins & Bushings : Pins undergo high-frequency induction hardening and precision cylindrical grinding, reducing pitch elongation and extending total chain service life by up to 40%.
Pre-Stretching & Proof Loading: Chains are pre-stretched in production to eliminate early elongation and ensure exact pitch matching across parallel chain strands.
Limitations
It operates based on sliding friction, so low & medium speed is required. Abrasive materials will accelerate component wear. Sticky materials need regular cleaning maintenance.
Typical Application
En-Masse Conveyor Chains: Dust-tight, fully enclosed horizontal and inclined bulk powder conveying.
Chain Bucket Elevator Systems: Vertical continuous heavy-duty elevation for mining and aggregate processing.
Cement & Power Generation Plants: Boiler ash removal, raw meal, and clinker conveying systems.
Application Selection Matrix
Fine Powder & Small Granules (Cement, Ash, Coal Powder): Recommend FU150 to FU270 at speed $V = 0.25 – 0.40 \text{ m/s}$.
Abrasive & Heavy Lump Materials (Clinker, Ores, Crushed Stone): Recommend FU350 to FU600 at speed $V = 0.15 – 0.28 \text{ m/s}$ equipped with reinforced flight scrapers.
Maintenance & Lubrication for FU Scraper Conveyor Chain
- Daily Inspection Check link plates, U-scrapers and pins for crack, deformation or welding falling off. Remove hard foreign materials to avoid chain jamming. Listen for abnormal noise during operation.
- Lubrication Use extreme pressure lithium grease. Lubricate hinge joints every 8–12 working hours. Avoid excessive thin oil, which mixes with dust and accelerates abrasion. Apply lubricant on the return side of the chain.
- Tension Adjustment Retension new chains after 72-hour running-in. Synchronously adjust tension bolts on both sides. Proper sag of the return chain: 30–50 mm for horizontal conveyors.
- Wear Inspection Replace the whole chain when elongation reaches 2.5%~3%. Do not mix new and old chains. Repair or replace damaged scrapers in time.
- Regular Cleaning Clean accumulated powder inside the housing weekly to reduce operating load. For long-term shutdown, coat chain with anti-rust grease.
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