{"title":"Idlers","description":"","products":[{"product_id":"20t-idler-bore-5mm-width-6mm-by-runice","title":"20T Idler Bore 5mm Width 6mm by Runice","description":"\u003cp\u003e\u003cstrong\u003eRunice 20T toothed GT2 idler for 6 mm belts.\u003c\/strong\u003e This silver aluminum idler pulley uses a \u003cstrong\u003e5 mm bore\u003c\/strong\u003e and \u003cstrong\u003e20-tooth 2GT profile\u003c\/strong\u003e for compact motion systems that need a bearing-supported belt return instead of a drive pulley.\u003c\/p\u003e\n\u003ch3\u003eWhy use a toothed idler here?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eToothed profile keeps the belt engaged through the return path instead of riding on a smooth surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6 mm belt width\u003c\/strong\u003e fits common GT2\/2GT motion layouts used in Voron-class and other CoreXY printer builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 mm bore\u003c\/strong\u003e matches common shoulder-bolt\/idler-stack hardware; use proper shims so the bearing is not side-loaded.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003cstrong\u003eRunice\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRunice MPN: \u003cstrong\u003eP20-2GT-6-A-P5-H10(MR95ZZ)A007\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eProfile: \u003cstrong\u003e2GT \/ GT2, toothed idler\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTooth count: \u003cstrong\u003e20T\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBelt width: \u003cstrong\u003e6 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBore: \u003cstrong\u003e5 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFinish\/color: \u003cstrong\u003esilver aluminum\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment and pairing\u003c\/h3\u003e\n\u003cp\u003eUse this as the silver 6 mm 20T idler in GT2 belt paths. If you need the matching drive pulley, see the \u003ca href=\"https:\/\/dfh.fm\/products\/20t-pulley-bore-5mm-width-6mm-by-runice\"\u003eRunice 20T 5 mm bore \/ 6 mm belt pulley\u003c\/a\u003e. If you want the same idler in black, see the \u003ca href=\"https:\/\/dfh.fm\/products\/black-0t-idler-bore-5mm-width-6mm-by-runice\"\u003eblack Runice 20T 6 mm idler\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eNot for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e9 mm belt paths — use a 9 mm idler instead.\u003c\/li\u003e\n\u003cli\u003eDrive shafts — this is an idler, not a toothed drive pulley.\u003c\/li\u003e\n\u003cli\u003eAxial loading — do not clamp the bearing stack so tightly that the idler binds.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Runice","offers":[{"title":"Default Title","offer_id":41104537977001,"sku":"6050543388","price":5.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/products\/IDLER-P20-2GT-6-A-P5-H10.jpg?v=1629686647"},{"product_id":"black-0t-idler-bore-5mm-width-6mm-by-runice","title":"Black 20T Idler Bore 5mm Width 6mm by Runice","description":"\u003cp\u003e\u003cstrong\u003eRunice black 20T 2GT idler for 6 mm belts.\u003c\/strong\u003e This is a toothed GT2\/2GT idler pulley with a \u003cstrong\u003e5 mm bore\u003c\/strong\u003e, \u003cstrong\u003e20-tooth profile\u003c\/strong\u003e, and \u003cstrong\u003e6 mm belt path\u003c\/strong\u003e for compact 3D-printer and CNC motion systems.\u003c\/p\u003e\n\u003ch3\u003eWhy use a toothed idler here?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMatches the belt tooth form instead of forcing the belt around a smooth bearing surface.\u003c\/li\u003e\n\u003cli\u003eBuilt around two bearings with flanges to keep a 6 mm GT2 belt tracking cleanly.\u003c\/li\u003e\n\u003cli\u003eBlack Runice finish suits visible CoreXY and enclosed-printer motion builds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer \/ drawing: \u003cstrong\u003eRunice P20-2GT-6-A-P5-H10\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTooth profile: \u003cstrong\u003e2GT \/ GT2, 20T\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBore: \u003cstrong\u003e5 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBelt width: \u003cstrong\u003e6 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOverall flange diameter: \u003cstrong\u003e15 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOverall height: \u003cstrong\u003e10 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eConstruction: toothed pulley body with \u003cstrong\u003e2 bearings\u003c\/strong\u003e and \u003cstrong\u003e2 flanges\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eUse and fitment\u003c\/h3\u003e\n\u003cp\u003eUse this anywhere your design calls for a \u003cstrong\u003e20T toothed GT2 idler with a 5 mm bore for 6 mm belt\u003c\/strong\u003e. It is the black version of our \u003ca href=\"https:\/\/dfh.fm\/products\/20t-idler-bore-5mm-width-6mm-by-runice\"\u003e20T 6 mm Runice idler\u003c\/a\u003e; if your motion system uses 9 mm belt, use the \u003ca href=\"https:\/\/dfh.fm\/products\/20t-idler-bore-5mm-width-9mm-by-runice\"\u003e20T 9 mm Runice idler\u003c\/a\u003e instead.\u003c\/p\u003e\n\u003ch3\u003eGotchas\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNot a drive pulley: this is an idler, not a shaft-mounted pulley for transferring motor torque.\u003c\/li\u003e\n\u003cli\u003eNot for 9 mm belts; choose the 9 mm idler if the belt path is wider.\u003c\/li\u003e\n\u003cli\u003eDo not clamp the bearings axially. Use the correct spacers\/shims so the idler spins freely after tightening.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote\u003e“They do be idlin’”\u003c\/blockquote\u003e","brand":"Runice","offers":[{"title":"Default Title","offer_id":42908170191070,"sku":"6276645935","price":6.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/products\/IMG_1967.png?v=1654441810"}],"url":"https:\/\/formosissima.myshopify.com\/collections\/idlers.oembed","provider":"dfh.fm","version":"1.0","type":"link"}