{"title":"Round Belts","description":"\u003ch2\u003eRound Belt Selection — Quick Reference\u003c\/h2\u003e\n\u003cp\u003eRound belts (O-ring belts) are circular-section drive belts used on light industrial conveyors, packaging, and small drives with V-pulleys (circular grooves). Their key advantage: they handle non-parallel shaft drives where flat\/V-belts can't track. Selection turns on diameter, length method (continuous vs weld-to-length stock), and construction.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBelt Type\u003c\/th\u003e\n\u003cth\u003eConstruction\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolid Polyurethane (PU) — Weldable Stock\u003c\/td\u003e\n\u003ctd\u003eSolid PU rod, melt-welded to length on-site\u003c\/td\u003e\n\u003ctd\u003eCustom-length conveyors, packaging, light industry\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReinforced PU (Cord Core)\u003c\/td\u003e\n\u003ctd\u003ePU with internal load-bearing cord\u003c\/td\u003e\n\u003ctd\u003eHigher load + tension capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHollow PU\u003c\/td\u003e\n\u003ctd\u003eHollow cross-section — very flexible\u003c\/td\u003e\n\u003ctd\u003eVery light loads — packaging, small product transport\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePre-Made Loop Belts\u003c\/td\u003e\n\u003ctd\u003eEndless, factory-welded\u003c\/td\u003e\n\u003ctd\u003eFixed-length applications, OEM replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eCommon diameters:\u003c\/strong\u003e 3mm, 5mm, 6mm, 8mm, 10mm, 12mm. \u003cstrong\u003eWelding stock:\u003c\/strong\u003e heat both ends with welding tool to ~190°C, press together while molten, hold until cool — bond strength ≥ original belt. \u003cstrong\u003ePulley match:\u003c\/strong\u003e circular groove diameter slightly smaller than belt OD (≈80% engagement). Brands: Gates, Habasit, Megadyne. Companion: \u003ca href=\"\/en-nz\/collections\/belts\"\u003eall belts\u003c\/a\u003e, \u003ca href=\"\/en-nz\/collections\/link-belts\"\u003elink belts\u003c\/a\u003e, \u003ca href=\"\/en-nz\/collections\/timing-belts\"\u003etiming belts\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eRound Belts for Australian Light Industrial and Conveyor Drives\u003c\/h2\u003e\n\u003cp\u003eRound belts (also called O-ring belts or round drive belts) are circular cross-section drive belts used in light industrial conveyors, packaging machinery, and small drive applications. They run on V-pulleys with circular grooves, suit non-parallel shaft drives where flat or V-belts can't track properly, and can be supplied in continuous loops or as weldable polyurethane stock for custom-length manufacture. AIMS Industrial supplies round belts across the diameters and constructions Australian light industrial users actually need.\u003c\/p\u003e\n\n\u003ch3\u003eThe round belt types we stock\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolid polyurethane (PU) round belt\u003c\/strong\u003e — the most common construction, weldable for custom lengths\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReinforced PU round belt\u003c\/strong\u003e — with internal cord for higher load capacity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHollow round belt\u003c\/strong\u003e — for very light loads where flexibility is the priority\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-made loops\u003c\/strong\u003e — endless construction for higher-load applications where joints can't be tolerated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeldable PU stock\u003c\/strong\u003e — sold by the metre for cutting and welding to length on site\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhere round belts earn their place\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConveyor drives\u003c\/strong\u003e — light-duty product handling where flat belts are over-engineering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging machinery\u003c\/strong\u003e — small drives in packaging lines, bag-making, and product feeding\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOffice equipment\u003c\/strong\u003e — printers, copiers, and document handling equipment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVending and dispensing machinery\u003c\/strong\u003e — small drives in commercial vending equipment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-parallel shaft drives\u003c\/strong\u003e — applications where the drive shafts aren't parallel; round belts handle the geometry\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSizing — diameter and length\u003c\/h3\u003e\n\u003cp\u003eRound belt sizing is by belt diameter (cross-section) and either length (for loops) or by quantity (for weldable stock sold by the metre). Common diameters range from 2mm through 20mm. Match diameter to the pulley groove size — undersized belts ride low in the groove and slip; oversized belts ride high and don't engage properly.\u003c\/p\u003e\n\n\u003ch3\u003eWelding round belts to length\u003c\/h3\u003e\n\u003cp\u003eSolid polyurethane round belts can be welded to custom length on site using a heated tool. The procedure: cut both ends square, heat the tool to the manufacturer-specified temperature, press both ends against the heated tool until softened, remove from the tool and quickly press the ends together. The weld cools and hardens within seconds. A properly-welded joint is typically 80-90% of the unwelded belt strength. Welding tools are stocked alongside the weldable belt stock.\u003c\/p\u003e\n\n\u003ch3\u003eWhy round belts over V-belts\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-parallel shaft drives\u003c\/strong\u003e — round belts can twist around their own axis, V-belts cannot\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet operation\u003c\/strong\u003e — no slap or chatter at the pulley engagement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom lengths\u003c\/strong\u003e — weldable stock allows on-site custom lengths without specialist equipment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLight loads\u003c\/strong\u003e — for drives where V-belts are over-engineered\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact installations\u003c\/strong\u003e — small pulley diameters that V-belts can't tolerate\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompanion ranges at AIMS\u003c\/h3\u003e\n\u003cp\u003eRound belts sit alongside our broader drive belt range — see \u003ca href=\"\/en-nz\/collections\/micro-v-belts\"\u003emicro V-belts\u003c\/a\u003e, \u003ca href=\"\/en-nz\/collections\/narrow-section-cogged-belts\"\u003enarrow section cogged belts\u003c\/a\u003e, \u003ca href=\"\/en-nz\/collections\/polyflex-belts\"\u003ePolyflex belts\u003c\/a\u003e, and \u003ca href=\"\/en-nz\/collections\/polychain-belts\"\u003ePolychain belts\u003c\/a\u003e for the broader drive belt range.\u003c\/p\u003e\n\n\u003cp\u003eNeed help speccing round belt or sourcing weldable stock for an existing drive? \u003ca href=\"\/en-nz\/pages\/contact-us\"\u003econtact our team\u003c\/a\u003e — we'll match by diameter, length, and load.\u003c\/p\u003e\n\u003ch2\u003ePeople Also Ask — Round Belts\u003c\/h2\u003e\n\u003ch3\u003eQ: What are round belts used for?\u003c\/h3\u003e\n\u003cp\u003eRound belts (also called O-ring belts or round drive belts) are used in light industrial conveyors, packaging machinery, office equipment, and small drives where non-parallel shaft layouts prevent flat or V-belts from tracking. Their circular cross-section allows them to run on crowned pulleys, twist through direction changes, and wrap over small radii that would crush conventional belt profiles.\u003c\/p\u003e\n\u003ch3\u003eQ: What is a weldable round belt and how is it joined?\u003c\/h3\u003e\n\u003cp\u003eWeldable round belts are supplied as polyurethane (PU) stock in continuous lengths that can be cut to any required length and heat-welded on site. Both ends are heated to approximately 190°C, pressed together while molten, and held until cool — the joint strength equals the belt strength when done correctly. This allows custom-length belts without waiting for factory-made loops.\u003c\/p\u003e\n\u003ch3\u003eQ: What diameters do round belts come in?\u003c\/h3\u003e\n\u003cp\u003eCommon round belt diameters are 3, 5, 6, 8, 10, and 12 mm. Smaller diameters (3–5 mm) suit light office equipment and packaging machinery; larger diameters (8–12 mm) suit light industrial conveyor and drive applications requiring more load capacity. Diameter selection also depends on the groove size in the pulley.\u003c\/p\u003e\n\u003ch3\u003eQ: What is the difference between solid PU, reinforced, and hollow round belts?\u003c\/h3\u003e\n\u003cp\u003eSolid PU is the most common construction — flexible, weldable, and suitable for most light industrial drives. Reinforced PU includes an internal cord for higher load and tension capacity where a solid belt would stretch excessively. Hollow round belts have a hollow cross-section for maximum flexibility on very light loads and small radii. Pre-made loop belts are factory-welded endless belts for fixed-length applications where a field joint is not appropriate.\u003c\/p\u003e\n\u003ch3\u003eQ: How should a round belt pulley groove be sized?\u003c\/h3\u003e\n\u003cp\u003eThe circular groove diameter should be sized to engage approximately 80% of the belt's outer diameter — the belt should seat in the groove without bottoming out and without excessive protrusion above the rim. A groove too large allows the belt to bottom out and lose drive friction; a groove too small creates excessive belt stress. Always match the groove radius to the belt's actual diameter, not just a nominal size.\u003c\/p\u003e","products":[{"product_id":"gates-round-endless-belt","title":"Gates Round Endless Belt","description":"\u003cdiv style=\"max-width:780px;width:100%;padding:12px 0;font-family:Arial,sans-serif\"\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:1fr 1fr 1fr;gap:24px\"\u003e\n\u003cdiv style=\"display:flex;align-items:flex-start;gap:8px\"\u003e\n\u003cspan style=\"font-size:14px;color:#333;line-height:1.5\"\u003e◆\u003c\/span\u003e\u003cspan style=\"font-size:14px;color:#333;line-height:1.5\"\u003eOther Gates Products\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex;align-items:flex-start;gap:8px\"\u003e\n\u003cspan style=\"font-size:14px;color:#333;line-height:1.5\"\u003e●\u003c\/span\u003e\u003cspan style=\"font-size:14px;color:#333;line-height:1.5\"\u003eSpecified to Gates published service standards\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex;align-items:flex-start;gap:8px\"\u003e\n\u003cspan style=\"font-size:14px;color:#333;line-height:1.5\"\u003e▲\u003c\/span\u003e\u003cspan style=\"font-size:14px;color:#333;line-height:1.5\"\u003eCompatible with the matching Gates drive components\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"height:18px\"\u003e\u003c\/div\u003e\n\u003cp\u003eThis drive belt range follows Gates published service standards. A genuine Gates v belt fits the matching drive components.\u003c\/p\u003e","brand":"Gates","offers":[{"title":"128 \/ 9X128","offer_id":49273763856661,"sku":"A0032647","price":176.63,"currency_code":"AUD","in_stock":true},{"title":"166 \/ 9X166","offer_id":49273763889429,"sku":"A0032650","price":258.55,"currency_code":"AUD","in_stock":true},{"title":"176 \/ 9X176","offer_id":49273763922197,"sku":"A0032651","price":302.71,"currency_code":"AUD","in_stock":true},{"title":"190 \/ 9X190","offer_id":49273763954965,"sku":"A0032652","price":308.94,"currency_code":"AUD","in_stock":true},{"title":"200 \/ 9X200","offer_id":49273763528981,"sku":"A0032635","price":337.47,"currency_code":"AUD","in_stock":true},{"title":"210 \/ 9X210","offer_id":49273763823893,"sku":"A0032646","price":295.85,"currency_code":"AUD","in_stock":true},{"title":"233 \/ 9X233","offer_id":49273763561749,"sku":"A0032636","price":366.79,"currency_code":"AUD","in_stock":true},{"title":"250 \/ 9X250","offer_id":49273763987733,"sku":"A0032653","price":314.95,"currency_code":"AUD","in_stock":true},{"title":"270 \/ 9X270","offer_id":49273763594517,"sku":"A0032637","price":328.36,"currency_code":"AUD","in_stock":true},{"title":"308 \/ 9X308","offer_id":49273763627285,"sku":"A0032638","price":353.59,"currency_code":"AUD","in_stock":true},{"title":"331 \/ 9X331","offer_id":49273763660053,"sku":"A0032639","price":375.57,"currency_code":"AUD","in_stock":true},{"title":"345 \/ 9X345","offer_id":49273764020501,"sku":"A0032654","price":386.99,"currency_code":"AUD","in_stock":false},{"title":"386 \/ 9X386","offer_id":49273763692821,"sku":"A0032640","price":276.62,"currency_code":"AUD","in_stock":false},{"title":"416 \/ 9X416","offer_id":49273763725589,"sku":"A0032641","price":285.37,"currency_code":"AUD","in_stock":true},{"title":"465 \/ 9X465","offer_id":49273763758357,"sku":"A0032642","price":284.81,"currency_code":"AUD","in_stock":true},{"title":"564 \/ 9X564","offer_id":49273763791125,"sku":"A0032643","price":301.63,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0740\/5191\/1957\/files\/gates-round-endless-belt-1146722.jpg?v=1781532862"},{"product_id":"round-polyurethane-belt-connector","title":"Round Polyurethane Belt Connector","description":"\u003cdiv style=\"max-width:680px;width:100%;padding:12px 0;font-family:Arial,sans-serif;\"\u003e\n\u003cdiv style=\"display:flex;align-items:flex-start;justify-content:space-between;border-top:1px solid #e0e0e0;border-bottom:1px solid #e0e0e0;padding:16px 0;margin-bottom:24px;\"\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e◆\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003ePolyurethane belt connector\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e●\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003eRound Polyurethane Belt Connector\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e▲\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003eMechanical belt joining\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:14px;line-height:1.6;color:#444;margin:0;\"\u003eMechanical belt connector for round polyurethane belts. Alternative to welding for joining belt ends. Provides a serviceable joint that can be opened and re-closed without re-welding. Used on belts that need periodic removal for maintenance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Eagle","offers":[{"title":"6mm","offer_id":49399595598101,"sku":"A0124632","price":11.92,"currency_code":"AUD","in_stock":true},{"title":"8mm","offer_id":49399595630869,"sku":"A0124633","price":11.92,"currency_code":"AUD","in_stock":true},{"title":"10mm","offer_id":49399595663637,"sku":"A0124634","price":14.91,"currency_code":"AUD","in_stock":true},{"title":"12mm","offer_id":49399595696405,"sku":"A0124635","price":14.91,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0740\/5191\/1957\/files\/round-polyurethane-belt-connector-5311546.jpg?v=1773126685"},{"product_id":"red-round-polyurethane-belt","title":"Red Round Polyurethane Belt","description":"\u003cdiv style=\"max-width:680px;width:100%;padding:12px 0;font-family:Arial,sans-serif;\"\u003e\n\u003cdiv style=\"display:flex;align-items:flex-start;justify-content:space-between;border-top:1px solid #e0e0e0;border-bottom:1px solid #e0e0e0;padding:16px 0;margin-bottom:24px;\"\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e◆\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003eRound polyurethane drive belt\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e●\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003eRed Round Polyurethane Belt\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e▲\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003eRed polyurethane, weldable ends\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:14px;line-height:1.6;color:#444;margin:0;\"\u003eRound polyurethane drive belt, red grade. Cut to length, weld the ends with an Eagle belt-welding tool, and install on round-groove pulleys. Eliminates inventory of every belt length and lets you make custom belts in minutes. Used widely on conveyors, packaging machinery and light-drive applications.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Eagle","offers":[{"title":"6mm","offer_id":49399727685909,"sku":"A0124628","price":18.42,"currency_code":"AUD","in_stock":true},{"title":"8mm","offer_id":49399727718677,"sku":"A0124629","price":35.25,"currency_code":"AUD","in_stock":true},{"title":"10mm","offer_id":49399727751445,"sku":"A0124630","price":51.96,"currency_code":"AUD","in_stock":true},{"title":"12mm","offer_id":49399727784213,"sku":"A0124631","price":67.84,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0740\/5191\/1957\/files\/red-round-polyurethane-belt-9762631.jpg?v=1773126442"},{"product_id":"green-round-polyurethane-belt","title":"Green Round Polyurethane Belt","description":"\u003cdiv style=\"max-width:680px;width:100%;padding:12px 0;font-family:Arial,sans-serif;\"\u003e\n\u003cdiv style=\"display:flex;align-items:flex-start;justify-content:space-between;border-top:1px solid #e0e0e0;border-bottom:1px solid #e0e0e0;padding:16px 0;margin-bottom:24px;\"\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e◆\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003eRound polyurethane drive belt\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e●\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003eGreen Round Polyurethane Belt\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e▲\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003eGreen polyurethane, weldable ends\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:14px;line-height:1.6;color:#444;margin:0;\"\u003eRound polyurethane drive belt, green grade. Cut to length, weld the ends with an Eagle belt-welding tool, and install on round-groove pulleys. Eliminates inventory of every belt length and lets you make custom belts in minutes. Used widely on conveyors, packaging machinery and light-drive applications.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Eagle","offers":[{"title":"4mm","offer_id":49402414039317,"sku":"A0124622","price":8.75,"currency_code":"AUD","in_stock":true},{"title":"5mm","offer_id":49402414072085,"sku":"A0124623","price":12.1,"currency_code":"AUD","in_stock":true},{"title":"6mm","offer_id":49402414104853,"sku":"A0124624","price":16.27,"currency_code":"AUD","in_stock":true},{"title":"8mm","offer_id":49402414137621,"sku":"A0124625","price":28.17,"currency_code":"AUD","in_stock":true},{"title":"10mm","offer_id":49402414170389,"sku":"A0124626","price":44.08,"currency_code":"AUD","in_stock":true},{"title":"12mm","offer_id":49402414203157,"sku":"A0124627","price":57.92,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0740\/5191\/1957\/files\/green-round-polyurethane-belt-8237983.jpg?v=1773126205"}],"url":"https:\/\/aimsindustrial.com.au\/en-nz\/collections\/round-belts.oembed","provider":"AIMS Industrial Supplies","version":"1.0","type":"link"}