{"id":1024,"date":"2026-07-17T05:36:32","date_gmt":"2026-07-17T05:36:32","guid":{"rendered":"https:\/\/plastic-modular-belt.com\/?post_type=product&p=1024"},"modified":"2026-07-17T06:30:21","modified_gmt":"2026-07-17T06:30:21","slug":"820-chain-wheel-driving-sprocket-idler-wheel","status":"publish","type":"product","link":"https:\/\/plastic-modular-belt.com\/el\/product\/820-chain-wheel-driving-sprocket-idler-wheel\/","title":{"rendered":"820 Chain Wheel \u2013 Driving Sprocket Idler Wheel"},"content":{"rendered":"
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Industrial Conveyor Components<\/span><\/div>\n

820 Chain Wheel \u2013 Driving Sprocket & Idler Wheel<\/h2>\n

Precision-engineered plastic modular belt sprockets for food processing, packaging, and material handling \u2014 trusted by UK manufacturers and global OEMs alike.<\/p>\n<\/div>\n

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\"sprocket\"The 820 Chain Wheel \u2014 available as both a Driving Sprocket and an Idler Wheel \u2014 is a cornerstone component in plastic modular conveyor belt systems. Designed to mesh seamlessly with 820-series modular belts, these sprockets deliver precise, low-noise power transmission across a wide range of industrial applications. Whether you are operating high-throughput food-grade lines in Yorkshire or automated packaging facilities in the Midlands, the 820 series offers the mechanical reliability and dimensional accuracy your operation demands. The tooth geometry is engineered to minimise belt wear and reduce chain articulation stress, translating into longer service intervals and lower total cost of ownership for UK procurement teams sourcing replacement conveyor parts.<\/p>\n

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\u2709 \u039b\u03ac\u03b2\u03b5\u03c4\u03b5 \u03bc\u03b9\u03b1 \u03c0\u03c1\u03bf\u03c3\u03c6\u03bf\u03c1\u03ac \u03c4\u03ce\u03c1\u03b1<\/a><\/div>\n<\/div>\n<\/div>\n

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Why UK Procurement Engineers Choose the 820 Sprocket<\/h2>\n

From food-grade hygiene compliance to heavy-duty throughput, this sprocket range covers the full spectrum.<\/p>\n

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Precision Tooth Form
\nCNC-machined or injection-moulded tooth profiles ensure consistent belt engagement, reducing lateral drift and premature wear even at high conveyor speeds.<\/span><\/p>\n<\/div>\n

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Food-Grade Materials
\nManufactured from FDA-compliant engineering polymers, the 820 sprocket is safe for direct and indirect food contact, meeting hygiene standards demanded across British food processing facilities.<\/span><\/p>\n<\/div>\n

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Multiple Bore Options
\nWith bore sizes of 25 mm, 30 mm, 35 mm, and 40 mm available across all tooth variants, retrofitting to existing shafts is straightforward \u2014 no custom machining required on site.<\/span><\/p>\n<\/div>\n

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Drive & Idler Variants
\nThe range includes dedicated Driving Sprocket and Idler Wheel configurations, allowing complete system assembly from a single supplier and simplifying your procurement and spares inventory.<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Technical Specifications<\/h2>\n

\"sprocket\"<\/p>\n

All dimensions in millimetres (mm). For non-standard models, please contact our sales team directly.<\/p>\n

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Sprocket Type<\/th>\nNumber of Teeth<\/th>\nBore (RB) mm<\/th>\nOut Side Diameter (OD) mm<\/th>\nPitch Diameter (PD) mm<\/th>\nStandard<\/th>\n<\/tr>\n<\/thead>\n
Round Bore<\/td>\n<\/tr>\n
820-19T-CD<\/td>\n19<\/td>\n25 \/ 30 \/ 35 \/ 40<\/td>\n117<\/td>\n117.3<\/td>\nMachining \/ Injection<\/td>\n<\/tr>\n
820-21T-CD<\/td>\n21<\/td>\n25 \/ 30 \/ 35 \/ 40<\/td>\n130<\/td>\n129.3<\/td>\n<\/tr>\n
820-23T-CD<\/td>\n23<\/td>\n25 \/ 30 \/ 35 \/ 40<\/td>\n141.9<\/td>\n141.2<\/td>\n<\/tr>\n
820-25T-CD<\/td>\n25<\/td>\n25 \/ 30 \/ 35 \/ 40<\/td>\n154.2<\/td>\n153.2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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

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How It Works \u2014 Principle, Material & Application<\/h2>\n
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Working Principle<\/p>\n

The 820 Chain Wheel operates on a positive-drive principle. The sprocket teeth interlock with the drive rods of the modular plastic belt, converting rotational shaft energy into linear belt motion. The Driving Sprocket is connected directly to the motor shaft and provides the primary motive force. The Idler Wheel, positioned at the return end of the conveyor, maintains belt tension and ensures smooth tracking without load-driving responsibility. Together, these two components define the belt’s travel path and guarantee consistent throughput across the full width of the conveyor frame \u2014 a critical requirement in high-speed sorting and accumulation systems commonly found across UK logistics and food processing operations.<\/p>\n<\/div>\n

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820 sprockets are produced from high-performance engineering thermoplastics \u2014 primarily acetal (POM) and polyamide (nylon PA6\/PA66) \u2014 which deliver outstanding strength-to-weight ratios, self-lubricating surfaces, and excellent resistance to moisture, cleaning chemicals, and mild acids. Unlike steel alternatives, plastic sprockets are corrosion-free, significantly lighter, and dramatically quieter during operation. For extreme duty cycles, glass-fibre-reinforced variants are available upon request, offering superior dimensional stability under cyclic load conditions. All materials conform to EU food-contact regulations and RoHS directives.<\/p>\n<\/div>\n

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Industry Applications<\/p>\n

The 820 sprocket is widely deployed across sectors where hygienic, reliable conveying is non-negotiable. In UK meat-processing plants, it handles wet, high-pressure washdown environments without corroding. Bakeries use it for dough and biscuit lines where oil contamination from metal sprockets would be a contamination risk. Automotive component manufacturers in the West Midlands rely on it for precise part orientation in assembly conveyors. Beverage bottling lines, pharmaceutical blister-pack systems, and e-commerce parcel sortation hubs across Britain all benefit from the low-maintenance, high-uptime performance of the 820 chain wheel.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Compatible System Components<\/h2>\n

Complete your conveyor build with matched sprocket accessories from our 1775 series, designed for seamless interoperability.<\/p>\n

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\ud83d\udd27 1775 Sprocket Drive Wheel<\/p>\n

A high-torque driving sprocket designed for the 1775 belt series, ideal for heavy-load applications requiring robust belt engagement and minimal shaft deflection.<\/p>\n

View Product \u2192<\/a><\/p>\n<\/div>\n

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\u2699\ufe0f 1775 Sprocket Idler Wheel<\/p>\n

The return-end companion to the 1775 Drive Wheel, maintaining belt tension and alignment with low rolling resistance across wide-width conveyor installations.<\/p>\n

View Product \u2192<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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

Proven performance across UK and European industrial operations.<\/p>\n

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\n\ud83c\uddec\ud83c\udde7 UK Poultry Processing \u2014 West Yorkshire<\/span><\/div>\n

A large-scale poultry processing facility in Wakefield was experiencing unacceptable downtime caused by corrosion on their steel sprockets, which were failing within 6\u20138 months under continuous washdown cycles using caustic cleaning agents. After switching to our 820-23T-CD sprockets \u2014 selected specifically for the 35 mm bore to match their existing driveshafts \u2014 the facility has now operated for over 26 months without a single sprocket replacement. Estimated annual maintenance savings exceeded \u00a318,000 per production line, and the engineering team reported a measurable reduction in belt noise during night-shift operations. The procurement manager noted the ease of ordering non-standard bore variants as a decisive advantage over their previous domestic supplier.<\/p>\n

“The transition was straightforward and the technical support from the supplier’s engineering team was excellent. We’ve standardised on the 820 series across all six of our processing lines.” \u2014 Engineering Manager, Wakefield Poultry Ltd.<\/div>\n<\/div>\n

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“We source the 820-19T-CD for our biscuit line in Manchester. The injection-moulded option arrived dimensionally perfect \u2014 no additional fitting required. Lead times are consistent and the quality is noticeably better than our previous European supplier.”<\/p>\n

\u2014 Head of Engineering, Manchester Bakery Group<\/p>\n<\/div>\n

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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“Our pharmaceutical packaging line runs 24\/7. We’ve been running 820-21T-CD idler wheels for 18 months. Zero failures, no belt tracking issues, and our maintenance team is very pleased with the simplified bolt-in replacement process.”<\/p>\n

\u2014 Production Director, MedPack Solutions, Stevenage, UK<\/p>\n<\/div>\n

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“As a conveyor OEM based in the Netherlands supplying UK fulfilment centres, we stock the full 820 sprocket range. Our clients in the logistics sector have specifically requested these by name after seeing them in competitor installations.”<\/p>\n

\u2014 Sales Director, ConveyTech BV, Rotterdam (UK market supplier)<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Factory Capabilities & Custom Sprocket Solutions<\/h2>\n

Behind every 820 Chain Wheel is a vertically integrated manufacturing operation with over 18 years of specialised experience.<\/p>\n

Our production facility operates a complete in-house capability from raw polymer compounding through to precision CNC machining and injection moulding \u2014 all under one roof. This vertical integration means we can offer bespoke tooth profiles, non-standard bore diameters, custom flange widths, and proprietary hub keyway configurations to meet exacting OEM requirements. For UK buyers working to BS EN standards or dealing with legacy conveyor frames, our engineering team provides full DXF\/STEP drawing review and tolerance matching as a standard pre-production service, at no additional cost. All outgoing components are inspected against first-article dimensional reports, and batch traceability is maintained throughout the production run. Minimum order quantities are kept deliberately low to support maintenance and spare-parts buyers as well as volume OEM customers. Whether you need 5 units for a line upgrade or 5,000 units for a new build, our production scheduling accommodates both with the same delivery commitment.<\/p>\n

Get a Quote \u2192<\/a><\/div>\n<\/div>\n<\/div>\n

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Answers to the questions UK buyers ask most often about the 820 sprocket series.<\/p>\n

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Where can I find a reliable supplier of 820 plastic modular belt sprockets in the UK that can ship quickly?<\/p>\n

We ship 820 Chain Wheel sprockets directly to UK addresses from stock, with standard lead times of 5\u201310 business days for catalogue models and 15\u201320 days for custom bore variants. Same-day quotation is available via email at sales@plastic-modular-belt.com.<\/span><\/div>\n<\/div>\n<\/div>\n
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What is the price of 820 series plastic sprockets and can I get a quote for a bulk order from a UK food processing plant?<\/p>\n

Pricing depends on tooth count, bore size, material grade, and order volume. We offer tiered pricing for bulk orders, and UK food processing buyers can request a formal quotation \u2014 including delivery cost \u2014 within 24 hours by contacting our sales team directly.<\/span><\/div>\n<\/div>\n<\/div>\n
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How do I choose between the Driving Sprocket and the Idler Wheel for my 820-series conveyor system?<\/p>\n

The Driving Sprocket is keyed or clamped directly onto the motor-driven shaft and transmits torque to the belt. The Idler Wheel sits on a passive (non-driven) shaft and is used at return ends or intermediate support points to maintain belt tension and tracking. Most conveyor designs use at least one of each.<\/span><\/div>\n<\/div>\n<\/div>\n
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Which 820 sprocket bore size should I order when replacing corroded steel sprockets on a UK meat-processing conveyor line?<\/p>\n

Measure your existing driveshaft diameter. The 820 series is stocked with round bores of 25 mm, 30 mm, 35 mm, and 40 mm. For shafts outside this range, we offer machined-to-order bore options. Non-standard sizes can be confirmed with a simple engineering drawing or shaft calliper measurement submitted alongside your enquiry.<\/span><\/div>\n<\/div>\n<\/div>\n
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When should a packaging facility in the UK consider upgrading from steel to plastic 820 chain wheel sprockets to reduce maintenance cost?<\/p>\n

If your facility uses frequent chemical washdown, operates in humid environments, or replaces steel sprockets more than once per year, switching to plastic 820 sprockets typically delivers a positive ROI within the first 12 months. The self-lubricating material also eliminates the need for sprocket greasing, further reducing scheduled maintenance time.<\/span><\/div>\n<\/div>\n<\/div>\n
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What materials are used in 820 plastic sprockets and are they approved for food-contact use under UK regulations?<\/p>\n

820 sprockets are manufactured from acetal (POM) or polyamide (nylon) engineering polymers. Both materials comply with FDA 21 CFR and EU 10\/2011 food-contact material regulations, making them suitable for direct or indirect contact with foodstuffs. Compliance documentation is available upon request for UK BRC and HACCP audits.<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Ready to upgrade your conveyor system with 820 Chain Wheel sprockets?<\/p>\n

\u2709 Contact Us: sales@plastic-modular-belt.com<\/a><\/p>\n

Plastic Modular Belt \u2014 UK B2B Industrial Conveyor Specialists \u00b7 edit by gzl<\/p>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

820 Chain Wheel \u2013 Driving Sprocket & Idler Wheel for plastic modular belt conveyors. Food-grade POM\/nylon, bore 25\u201340mm, 19\u201325 teeth. Trusted by UK food processing & packaging manufacturers. Request a quote today.<\/p>","protected":false},"featured_media":1034,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[600],"product_tag":[],"class_list":["post-1024","product","type-product","status-publish","has-post-thumbnail","product_cat-sprocket","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/plastic-modular-belt.com\/el\/wp-json\/wp\/v2\/product\/1024","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/plastic-modular-belt.com\/el\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/plastic-modular-belt.com\/el\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/plastic-modular-belt.com\/el\/wp-json\/wp\/v2\/comments?post=1024"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/plastic-modular-belt.com\/el\/wp-json\/wp\/v2\/media\/1034"}],"wp:attachment":[{"href":"https:\/\/plastic-modular-belt.com\/el\/wp-json\/wp\/v2\/media?parent=1024"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/plastic-modular-belt.com\/el\/wp-json\/wp\/v2\/product_brand?post=1024"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/plastic-modular-belt.com\/el\/wp-json\/wp\/v2\/product_cat?post=1024"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/plastic-modular-belt.com\/el\/wp-json\/wp\/v2\/product_tag?post=1024"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}