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Industrial Chain Solutions · UK Supplier
820 Single Row Sideflex Run
Single Hinge Chain
Precision-engineered modular plastic chain for sideflex conveyor systems — trusted by food processing, beverage, and pharmaceutical plants across the United Kingdom.
What Is the 820 Single Row Sideflex Run Single Hinge Chain?
The 820 Single Row Sideflex Run Single Hinge Chain is a high-performance modular plastic conveyor chain engineered specifically for curved and sideflex conveyor layouts. Unlike conventional straight-running chains, this design incorporates a single-hinge pivot architecture that allows the belt to navigate horizontal bends smoothly — without sacrificing load integrity or surface contact. With a pitch of 38.1 mm and a minimum backflex radius of just 40 mm, it handles tight conveyor curves that would defeat conventional flat-top chains. The 820 series is a widely adopted standard in UK manufacturing facilities, food production lines, and packaging plants where layout space is limited and product transfer must remain stable throughout every curve and transition.
Built from XLG (Extra Low Gravity polypropylene) or PS (polystyrene-based compound), the chain combines chemical resistance with dimensional stability under both dry and wet working conditions. Its open-hinge construction promotes thorough drainage and hygiene cleaning — a critical factor for UK food manufacturers operating under Food Standards Agency (FSA) guidelines. The maximum working load of 1,230 N at 21°C makes it suitable for medium-duty product lines, from poultry processing conveyors in Yorkshire to bottling lines in the Midlands.
Why Buyers Across the UK Choose the 820 Sideflex Hinge Chain
True Sideflex Performance
The single-hinge joint allows lateral flexing along a minimum radius of 40 mm — enabling compact curved conveyor layouts without product spillage or belt misalignment.
Hygienic Open Structure
Open-hinge geometry encourages water drainage and allows CIP (clean-in-place) wash-down procedures — compliant with UK food safety and hygiene standards for wet processing environments.
Dual Material Options
Available in XLG polypropylene for general-purpose and cold-chain applications, and PS compound for enhanced stiffness in ambient dry environments. Both variants cover a working temperature range of 4°C to 64°C.
Consistent Load Distribution
With a maximum working load of 1,230 N, the chain distributes product weight evenly through each hinge link — reducing stress concentrations and extending service life in continuous-duty UK production environments.
Three Standard Widths
The 820 series is stocked in 82.6 mm (K325), 114.8 mm (K450), and 152.4 mm (K600) chain widths — covering single-lane, dual-lane, and wide-format conveyor systems without custom tooling.
Αντικατάσταση μονάδας χωρίς εργαλεία
Individual modules can be removed and replaced without dismantling the entire belt run — dramatically reducing conveyor downtime during routine maintenance or unexpected damage incidents on the production floor.
Technical Specifications
| Belt Type | Chain Width (mm) | Pitch (mm) | Backflex Radius Min (mm) | Working Load Max N (21°C) | Temp °C Dry / Wet | Weight (Kg/m) | Υλικό |
|---|---|---|---|---|---|---|---|
| 820-K325 | 82.6 | 38.1 | 40 | 1230 | 4–64 / 4–64 | 0.83 | XLG |
| 82.6 | 38.1 | 40 | 1230 | 4–64 / 4–64 | 0.83 | PS | |
| 820-K450 | 114.8 | 38.1 | 40 | 1230 | 4–64 / 4–64 | 1.03 | XLG |
| 114.8 | 38.1 | 40 | 1230 | 4–64 / 4–64 | 1.03 | PS | |
| 820-K600 | 152.4 | 38.1 | 40 | 1230 | 4–64 / 4–64 | 1.25 | XLG |
| 152.4 | 38.1 | 40 | 1230 | 4–64 / 4–64 | 1.25 | PS |
* Working load values measured at 21°C. Temperature range applies equally to dry and wet environments.
Materials, Working Principle & Application Scenarios
▶ How It Works
Each module of the 820 sideflex hinge chain is connected through a single transverse hinge rod. When the chain enters a horizontal curve, individual modules pivot slightly relative to each other around this rod, enabling the belt to track along the inside radius of the curve without binding. The single-hinge design concentrates articulation at a defined pivot point, which distributes wear evenly and ensures consistent tracking performance throughout the chain’s service life. This is fundamentally different from straight-running chains, where lateral movement is constrained — here, the geometry is deliberately designed to encourage controlled sideways flex while maintaining longitudinal tension and surface planarity.
▶ Material Science
The XLG grade is an engineering polypropylene compound with enhanced impact resistance and low friction coefficient. It performs well under refrigeration conditions (4°C minimum) without becoming brittle — ideal for chilled dairy or meat conveyor lines in UK cold-storage facilities. The PS variant offers greater rigidity and surface hardness, making it the preferred choice for dry goods packaging environments where belt deflection under load must be minimised. Both materials are non-toxic, non-porous, and free of heavy metal additives — supporting compliance with UK food contact material regulations derived from EU Regulation 10/2011, which remains referenced under UK retained law.
▶ Where It’s Used
The 820 sideflex chain is most commonly deployed in food & beverage processing plants, specifically in wet zones like fish filleting lines, poultry washdown areas, and fruit and vegetable washing conveyors. In the pharmaceutical sector, its clean-surface profile supports tablet and capsule transfer on curved sorter belts. Packaging facilities across the UK Midlands and North England use it to route product streams around tight corner transfers in space-constrained layouts. It also sees regular use in baking and confectionery environments where grease resistance and thermal stability between 4°C and 64°C are non-negotiable production requirements.
Customer Success: Poultry Processing Plant, Yorkshire, UK
Background: A mid-sized poultry processing facility in Harrogate, North Yorkshire, was running a 12-year-old stainless steel slat chain on its wet-zone inspection conveyor. The existing setup required weekly lubrication, experienced frequent jam events at its two 90-degree bends, and could not be wet-cleaned in place due to the chain design. Downtime from jams and cleaning averaged 4.5 hours per week.
Solution: The plant’s maintenance manager sourced 820-K450 sideflex hinge chains in XLG material across two conveyor runs. The 114.8 mm chain width matched existing guide rail spacing, eliminating the need for frame modification. Installation was completed over a single weekend shutdown — significantly less disruption than a full frame replacement would have required. The 40 mm minimum backflex radius easily accommodated both existing corner transfers.
Outcome: Over the following three months, unplanned conveyor downtime dropped by approximately 80%. CIP cleaning time per shift fell from 35 minutes to under 12 minutes. The XLG material’s lubrication-free running eliminated the previous contamination risk from chain lubricant migrating onto the product surface — a factor that had previously generated quality audit observations. The site has since retrofitted a third conveyor run with the same chain specification.
“We replaced our old steel chain with the 820-K450 XLG on our poultry inspection line. The sideflex performance through our tight curves is exactly what we needed — no tracking issues at all after six months of continuous running.”
— Production Manager, Poultry Processing, North Yorkshire
“We specified the 820-K600 PS variant for our dry biscuit packaging line in Birmingham. The chain tracks perfectly through two 90-degree corners without any guide adjustment. Cleaning between runs takes minutes — it’s transformed our shift changeover speed.”
— Engineering Lead, Biscuit Manufacturer, West Midlands
“Good communication throughout the quoting process. The team were able to confirm compatibility with our existing sprocket layout before we ordered. Delivery to our site in Manchester was faster than expected. The chain itself has been running without issue for four months.”
— Maintenance Supervisor, Pharmaceutical Packing, Greater Manchester
Compatible Drive & Idler Components
The 820 sideflex hinge chain is engineered to run with matching sprocket components. Using correctly profiled sprockets is critical to maintaining chain pitch engagement and preventing premature wear in sideflex applications. We supply two primary compatible components:
1775 Sprocket Drive Wheel
The powered drive sprocket for 1775-series conveyor systems. Precisely profiled tooth geometry ensures smooth chain engagement at the drive end, minimising noise and backlash in continuous-duty sideflex applications.
1775 Sprocket Idler Wheel
The unpowered return-end idler sprocket for 1775-series belt systems. Low-friction bearing bore and corrosion-resistant body material make it well suited to wet-zone and washdown environments common in UK food processing facilities.
Manufacturing Capability & Custom Orders
Our production facility operates precision injection moulding lines with full in-house tooling capability. Every batch of 820 sideflex hinge chain is moulded to consistent dimensional tolerances and undergoes post-production load and dimensional verification before dispatch. We hold ISO-compliant quality management procedures across all stages of production — from raw material intake testing through to finished goods inspection.
Beyond the three standard widths, we offer bespoke chain width manufacturing for UK customers with non-standard conveyor frame spacings. Whether you need a 95 mm intermediate width or a 170 mm wide-format chain for a specialist application, our engineering team can produce custom tooling and supply chains in minimum quantities suitable for retrofit or new-build projects. We also support custom hinge rod materials (stainless steel rod for aggressive wash-down environments) and colour-coded modules for allergen-separation conveyor protocols — a growing requirement among UK baked goods and nut-processing facilities. Speak to us about your specification and we’ll confirm feasibility within 48 hours.
Συχνές ερωτήσεις
Ready to Source the 820 Sideflex Hinge Chain for Your UK Operation?
Standard and custom widths · XLG and PS materials · Food, pharma & packaging sectors
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