{"id":1026,"date":"2026-07-17T05:35:15","date_gmt":"2026-07-17T05:35:15","guid":{"rendered":"https:\/\/plastic-modular-belt.com\/?post_type=product&p=1026"},"modified":"2026-07-17T06:28:12","modified_gmt":"2026-07-17T06:28:12","slug":"820-conveyor-chain-drive-sprocket-and-idler-wheel","status":"publish","type":"product","link":"https:\/\/plastic-modular-belt.com\/el\/product\/820-conveyor-chain-drive-sprocket-and-idler-wheel\/","title":{"rendered":"820 Conveyor Chain Drive Sprocket and Idler Wheel"},"content":{"rendered":"
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EP Series \u00b7 Industrial Drive Components<\/p>\n

820 Conveyor Chain Drive Sprocket
\nand Idler Wheel<\/h2>\n

Engineered for high-load plastic modular belt conveyor systems \u00b7 Trusted by UK food, beverage & logistics industries<\/p>\n

Series 820 \u00b7 Machining & Injection Moulding<\/span><\/p>\n<\/div>\n

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\"Sprocket\"The 820 conveyor chain drive sprocket and idler wheel is a purpose-built drive component designed specifically for use with 820-series plastic modular belts. Whether you are running a continuous production line in a UK food processing facility, a bottling plant in the Midlands, or a logistics sortation centre in Greater Manchester, the performance of your conveyor system depends directly on the mechanical integrity of your sprockets. These components are manufactured to exacting tolerances, delivering reliable belt engagement, extended operational life, and minimal downtime across demanding 24\/7 environments.<\/p>\n

Available in both machined and injection-moulded standards, the 820 series sprocket range covers tooth configurations from 19T through 25T, with bore options accommodating shaft diameters of 25, 30, 35 and 40 mm. This flexibility allows system integrators and maintenance engineers across the UK to source the correct drive sprocket without compromise \u2014 matching shaft specifications exactly and eliminating costly adaptor arrangements. Each unit is produced under strict quality protocols consistent with international industrial manufacturing standards.<\/p>\n<\/div>\n

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Why the 820 Sprocket Outperforms Standard Drive Components<\/h2>\n

When conveyor engineers in the UK compare drive sprocket options for modular belt systems, several performance differentiators consistently place the 820 series above generic alternatives. The tooth geometry is calibrated to the exact pitch and drive rod diameter of the 820 modular belt, ensuring smooth belt engagement with minimal vibration and noise \u2014 a critical factor in food production environments where hygiene audits are carried out regularly and mechanical noise affects operator wellbeing. Unlike metallic sprockets, the engineering polymer construction resists corrosion from cleaning agents, saline atmospheres and product residues without any surface coating that could chip or contaminate product lines.<\/p>\n

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Precision Tooth Profile<\/p>\n

Matched to 820-belt pitch for consistent engagement and reduced belt wear across high-cycle operations.<\/p>\n<\/div>\n

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Food-Safe Engineering Polymer<\/p>\n

Non-corroding material suitable for wash-down environments and direct food contact applications common in UK production sites.<\/p>\n<\/div>\n

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Multiple Bore Configurations<\/p>\n

25 \/ 30 \/ 35 \/ 40 mm round bore options accommodate most standard drive shaft sizes without custom machining.<\/p>\n<\/div>\n

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Dual Manufacture Standards<\/p>\n

Machined versions offer tighter tolerances; injection-moulded variants provide cost efficiency for high-volume replacements.<\/p>\n<\/div>\n

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Drive + Idler Compatibility<\/p>\n

Both drive and idler variants share dimensional compatibility, simplifying stock management and reducing warehousing cost.<\/p>\n<\/div>\n

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UK Stock & Fast Despatch<\/p>\n

Standard configurations held in inventory for prompt supply to UK conveyor OEMs and maintenance teams.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Technical Drawing \u2014 EP 820 Series Sprocket<\/h2>\n

\"Sprocket\"<\/p>\n<\/div>\n

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Technical Specifications<\/h2>\n

All dimensions in millimetres. Round bore configurations shown below. Non-standard models are available \u2014 contact our technical sales team for custom bore sizes, keyway arrangements, or special materials.<\/p>\n

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Sprocket Type<\/th>\nNumber of Teeth<\/th>\nBore RB (mm)<\/th>\nOutside Diameter OD (mm)<\/th>\nPitch Diameter PD (mm)<\/th>\nStandard<\/th>\n<\/tr>\n<\/thead>\n
Round Bore Configuration<\/td>\n<\/tr>\n
820-19T-CD<\/td>\n19<\/td>\n25 \/ 30 \/ 35 \/ 40<\/td>\n117<\/td>\n\u2014<\/td>\nMachining \/ Injection<\/td>\n<\/tr>\n
820-21T-CD<\/td>\n21<\/td>\n25 \/ 30 \/ 35 \/ 40<\/td>\n130<\/td>\n\u2014<\/td>\n<\/tr>\n
820-23T-CD<\/td>\n23<\/td>\n25 \/ 30 \/ 35 \/ 40<\/td>\n141.9<\/td>\n\u2014<\/td>\n<\/tr>\n
820-25T-CD<\/td>\n25<\/td>\n25 \/ 30 \/ 35 \/ 40<\/td>\n154.2<\/td>\n\u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* If the sprocket requires a non-standard model, please contact our technical sales team directly.<\/p>\n<\/div>\n

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How the 820 Sprocket System Works<\/h2>\n

The 820 conveyor chain sprocket operates on a positive-drive engagement principle. Each tooth on the sprocket body slots precisely into the drive rods moulded into the cross-section of the 820-series modular belt. As the drive shaft rotates \u2014 powered by a geared motor \u2014 the sprocket teeth mesh with the belt rods and pull the belt surface forward at a controlled, slip-free speed. At the return end of the conveyor, the idler wheel fulfils a complementary function: it guides the belt back through its return path without applying any motorised driving force, maintaining belt tension and preventing lateral drift. The result is a mechanically efficient, low-maintenance drive arrangement that handles both straight-running and curved conveyor layouts.<\/p>\n

Material selection is central to the performance of the 820 series sprocket. The standard engineering polymer used in these components \u2014 typically acetal (POM) or high-density polyethylene (HDPE) depending on the application \u2014 offers an excellent combination of stiffness, impact resistance and low coefficient of friction. In food and beverage processing plants throughout England, Scotland and Wales, this material choice means sprockets do not require lubrication, eliminating any risk of lubricant contamination reaching product lines. The polymer also tolerates repeated exposure to high-pressure hot-water wash-down cycles without dimensional change or surface degradation.<\/p>\n

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Application Sectors<\/p>\n

Food & beverage processing \u00b7 Meat and poultry handling \u00b7 Bottling & packaging \u00b7 E-commerce parcel sortation \u00b7 Pharmaceutical distribution<\/p>\n<\/div>\n

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Standard: Engineering-grade POM (acetal) \u00b7 HDPE variant available \u00b7 Custom PA66 (nylon) on request for elevated temperature environments<\/p>\n<\/div>\n

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Operating Environment<\/p>\n

Temperature range: -20\u00b0C to +80\u00b0C (standard) \u00b7 Wet, dry, and hygienic environments \u00b7 Chemical resistance to common cleaning agents<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Customer Success: Real-World Results<\/h2>\n

Across the UK, our 820 series sprocket and idler wheels have been integrated into production lines where reliability is non-negotiable. Below is one detailed deployment case alongside direct feedback from customers in different sectors.<\/p>\n

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Case Study \u00b7 UK Food Processing \u00b7 Yorkshire<\/p>\n

Poultry Processing Plant Cuts Sprocket Replacement by 68%<\/h3>\n

A mid-sized poultry processing facility in North Yorkshire was running two continuous deboning lines using stainless-steel drive sprockets on their existing 820-series modular belt conveyors. Although the metal sprockets met load requirements, the plant maintenance team was replacing them every four to five months due to accelerated corrosion from the high-chlorine wash-down regime used to comply with UK Food Standards Agency hygiene requirements. Each unplanned replacement caused approximately six hours of downtime per line and involved specialist maintenance staff.<\/p>\n

After switching to the EP 820 engineering polymer sprocket range \u2014 specifically the 820-21T-CD with 35 mm bore across eight drive positions per line \u2014 the facility reported zero corrosion-related failures over a 14-month follow-up period. Annual maintenance cost on sprocket components was reduced by approximately 68%. The polymer material also eliminated the need for separate corrosion-inhibiting sprays, simplifying the cleaning protocol and removing a potential contamination vector identified during a BRC audit.<\/p>\n<\/div>\n

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“We’ve been using the 820-23T-CD sprockets on our bottling line for over a year now. Lead times are short, the dimensional accuracy is excellent, and our line efficiency has genuinely improved since switching.”<\/p>\n

James H. \u00b7 Conveyor Systems Engineer
\nBeverage Manufacturer, West Midlands, UK<\/span><\/p>\n<\/div>\n

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“We needed a custom bore size for an older drive shaft and the technical team turned around a solution within two days. The quality of the finished sprocket was outstanding \u2014 tight tolerances throughout.”<\/p>\n

Sarah M. \u00b7 Maintenance Manager
\nLogistics & E-commerce Fulfilment, Manchester, UK<\/span><\/p>\n<\/div>\n

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“Our pharmaceutical packaging line runs at elevated speeds continuously. Since fitting the 820-19T-CD sprockets with 30 mm bore, we’ve had no tracking issues and belt wear has reduced noticeably. Genuinely impressed.”<\/p>\n

Dr. P. Whitmore \u00b7 Engineering Director
\nPharma Packaging OEM, Cambridge, UK<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Manufacturing Capability & Custom Sprocket Solutions<\/h2>\n

Our manufacturing facility operates CNC machining centres and dedicated injection-moulding production lines for sprocket and idler wheel production. With in-house tooling design and a fully equipped quality laboratory, we offer a product customisation capability that extends far beyond adjusting bore diameters. UK buyers working on OEM conveyor designs, system upgrades, or bespoke hygienic plant layouts can request modifications including non-standard tooth counts, alternative polymer grades for elevated temperature or chemical resistance environments, split-hub designs for retrofit installation without shaft disassembly, and custom flange arrangements for lateral belt guidance.<\/p>\n

Our engineering team works directly with customers’ design specifications. Whether you supply a drawing, a sample component, or a CAD file, we can reverse-engineer, prototype, and validate a solution before committing to volume production. Minimum order quantities are flexible for custom profiles, and prototype lead times are typically under two weeks for standard polymer grades. For UK conveyor OEMs managing multiple product variants, we also offer dedicated part numbering and Kanban stock arrangements to keep your production schedules on track.<\/p>\n

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Related Drive Components<\/h2>\n

Engineers specifying drive components for modular belt conveyors should also consider the 1775 series sprocket range, which covers larger belt pitch applications and higher load-capacity systems. Both components listed below are compatible with the broader EP modular belt ecosystem:<\/p>\n

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Drive Sprocket<\/p>\n

1775 Sprocket Drive Wheel<\/a><\/h3>\n

Positive-drive sprocket wheel engineered for 1775-series plastic modular belts. Suitable for heavy-duty conveying in meat processing and industrial sortation environments.<\/p>\n<\/div>\n

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Idler Wheel<\/p>\n

1775 Sprocket Idler Wheel<\/a><\/h3>\n

Return-end idler wheel for the 1775-series belt system, maintaining belt tension and alignment without driving force. Low-friction polymer construction reduces energy consumption.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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What is the price of an 820 conveyor chain sprocket for a UK food processing line, and can I get a bulk discount?<\/div>\n
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Pricing for the 820 sprocket range depends on the tooth configuration, bore size, and manufacturing method selected (machined vs injection-moulded). Volume discounts are available and are structured around annual or single-order quantities. Contact our UK sales team at sales@plastic-modular-belt.com<\/a> for a detailed quote with your specific configuration and quantity requirements.<\/p>\n<\/div>\n<\/div>\n

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Which 820 series sprocket should I choose for a UK bottling plant conveyor running at high speed continuously?<\/div>\n
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For high-speed continuous operation, we typically recommend the 820-21T-CD or 820-23T-CD configurations. A higher tooth count distributes belt load across more engagement points, reducing individual tooth stress and extending component life at elevated belt speeds. The machined variant offers tighter dimensional tolerances than injection-moulded parts, which can be advantageous in precision-speed applications. Share your line speed (m\/min), belt width, and shaft diameter with our engineers for a specific recommendation.<\/p>\n<\/div>\n<\/div>\n

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How long does it take to get a quote for a custom bore 820 sprocket from a UK supplier?<\/div>\n
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For standard configurations, quotations are typically returned within 24 hours of enquiry. Custom bore sizes or modified designs requiring engineering review usually receive a preliminary quote within 48 hours, with a full technical proposal and lead-time confirmation within two to three working days. Prototype samples for custom models are available with typical lead times of 10 to 14 days from drawing approval.<\/p>\n<\/div>\n<\/div>\n

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Where can I find a reliable 820 plastic modular belt sprocket supplier in the UK that offers both drive and idler wheel options?<\/div>\n
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We supply both 820 drive sprockets and idler wheels directly to UK conveyor OEMs, system integrators, and end-user maintenance teams. Our stock covers the full standard tooth range (19T through 25T) with all four bore configurations available for immediate despatch. We serve customers across England, Scotland, Wales and Northern Ireland, with export documentation available for international orders placed from within the UK.<\/p>\n<\/div>\n<\/div>\n

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What is the difference between an 820 drive sprocket and an idler wheel, and when do I need both on the same conveyor?<\/div>\n
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The drive sprocket is mounted on the motorised head shaft of the conveyor and transmits torque from the drive motor into the modular belt. The idler wheel sits on the tail shaft and has no driving function \u2014 it simply guides the returning belt around the end of the conveyor frame and maintains belt tension. On a standard conveyor you need at minimum one drive sprocket set and one idler wheel set. On longer conveyors or those with intermediate drive arrangements, additional drive sprocket sets may be required at intermediate positions.<\/p>\n<\/div>\n<\/div>\n

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How do I know when it is time to replace the 820 sprocket on my UK production line conveyor?<\/div>\n
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The most common indicators of sprocket wear include increased belt vibration or noise during operation, visible tooth rounding or chipping on the sprocket body, belt tracking issues that cannot be resolved through tension adjustment, and unusual heat generation at the drive end of the conveyor. In food processing facilities where conveyor lines operate 16 to 24 hours per day, a scheduled inspection interval of every three to six months is a practical maintenance benchmark. Contact our technical team for wear assessment support if you are unsure.<\/p>\n<\/div>\n<\/div>\n<\/div>\n


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