{"title":"Pulleys","description":"","products":[{"product_id":"deflanged-20-tooth-with-30mm-pin-for-voron-2-4-z-endstop","title":"Deflanged 20 Tooth with 30mm Pin for Voron 2.4 Z Endstop","description":"\u003cp\u003e\u003cstrong\u003eStock-style Voron 2.4 Z endstop contact hardware.\u003c\/strong\u003e This bundle includes a deflanged GT2 20 tooth pulley and a 5 mm x 30 mm steel pin\/shaft for the microswitch-style Voron 2.4 Z endstop assembly.\u003c\/p\u003e\n\u003ch3\u003eWhy this part matters\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eReplaces the small contact hardware used in the Voron 2.4 Z endstop so the nozzle has a repeatable mechanical touch point.\u003c\/li\u003e\n  \u003cli\u003eThe deflanged 20T pulley press-fits into the printed endstop part; the 30 mm shaft sits in the pulley as the Z contact pin.\u003c\/li\u003e\n  \u003cli\u003eUseful when you lost the original pin, damaged the pulley during assembly, or are rebuilding the stock microswitch-style endstop.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePulley: \u003cstrong\u003eGT2 20 tooth\u003c\/strong\u003e, deflanged for the Z endstop printed part\u003c\/li\u003e\n  \u003cli\u003ePin\/shaft: \u003cstrong\u003e5 mm diameter x 30 mm length\u003c\/strong\u003e steel shaft\u003c\/li\u003e\n  \u003cli\u003eFitment: Voron 2.4 stock-style microswitch Z endstop \/ Z probe contact assembly\u003c\/li\u003e\n  \u003cli\u003eIncluded: pulley + pin only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment and pairing\u003c\/h3\u003e\n\u003cp\u003eUse this with the printed Voron 2.4 Z endstop parts and the correct microswitch or endstop PCB for your build. The official Voron 2.4 manual shows the Z endstop using a GT2 20 tooth pulley and 5 mm shaft, with the pulley press-fit into the printed part.\u003c\/p\u003e\n\u003cp\u003eIf you are moving away from the stock pin-and-pulley style endstop, the \u003ca href=\"https:\/\/dfh.fm\/products\/voron-2-4-sexbolt-z-endstop-super-kit\"\u003eVoron 2.4 and Trident Sexbolt Z Endstop Super Kit\u003c\/a\u003e is the more complete alternate endstop route.\u003c\/p\u003e\n\u003ch3\u003eWhat it is not\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eNot a complete Z endstop kit; it does not include the PCB, microswitch, wiring, printed parts, or screws.\u003c\/li\u003e\n  \u003cli\u003eNot an XY idler pulley or a general motion-kit pulley; it is prepared for the Voron 2.4 Z endstop contact assembly.\u003c\/li\u003e\n  \u003cli\u003eIf your switch has a lever, remove it only if your Z endstop printed part or PCB assembly requires a bare microswitch.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dfh.fm","offers":[{"title":"Default Title","offer_id":40372132511913,"sku":"CHA0-0000997","price":2.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/products\/IMG_8273_0.5x.jpg?v=1619668180"},{"product_id":"20t-pulley-bore-5mm-width-6mm-by-runice","title":"20T Pulley Bore 5mm Width 6mm by Runice","description":"\u003cp\u003e\u003cstrong\u003eRunice 20T 2GT timing pulley for 5 mm shafts and 6 mm belts.\u003c\/strong\u003e This is the silver Runice RLA20-2GT-6-C-P5-H16 pulley used in Voron-style motion systems where a 20 tooth drive pulley, 5 mm motor shaft bore, and 6 mm GT2\/2GT belt path are required.\u003c\/p\u003e\n\u003ch3\u003eWhy this pulley\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 tooth, 2 mm pitch profile\u003c\/strong\u003e for common GT2\/2GT printer motion builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 mm bore\u003c\/strong\u003e fits the standard 5 mm shafts on many NEMA 17 stepper motors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6 mm belt compatibility\u003c\/strong\u003e for Gates POWERGRIP and other 6 mm 2GT\/GT2 timing belts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble-flanged aluminum pulley\u003c\/strong\u003e helps keep the belt captured on compact CoreXY and Z-drive layouts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Runice\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e RLA20-2GT-6-C-P5-H16\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTooth count:\u003c\/strong\u003e 20T\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePitch\/profile:\u003c\/strong\u003e 2GT \/ GT2, 2 mm pitch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore:\u003c\/strong\u003e 5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt width:\u003c\/strong\u003e for 6 mm timing belts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall height:\u003c\/strong\u003e 16 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFastening:\u003c\/strong\u003e two M4 set screws\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e aluminum\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eUseful as a replacement or spare pulley for Voron-style motion assemblies, including the \u003ca href=\"https:\/\/dfh.fm\/products\/voron-2-4-motion-kit-1\"\u003eVoron 2.4 Motion Kit\u003c\/a\u003e and \u003ca href=\"https:\/\/dfh.fm\/products\/voron-2-4-r2-motion-kit\"\u003eVoron 2.4 R2 Motion Kit\u003c\/a\u003e where this 20T 5 mm bore \/ 6 mm belt pulley spec is called out.\u003c\/p\u003e\n\u003ch3\u003eRelated options\u003c\/h3\u003e\n\u003cp\u003eNeed the same size in black? Use the \u003ca href=\"https:\/\/dfh.fm\/products\/black-pulley-bore-5mm-width-6mm-by-runice\"\u003eBlack 20T Pulley Bore 5mm Width 6mm by Runice\u003c\/a\u003e. For 16T drive layouts, see the \u003ca href=\"https:\/\/dfh.fm\/products\/16t-pulley-bore-5mm-width-6mm-by-runice\"\u003eSilver 16T Pulley\u003c\/a\u003e or \u003ca href=\"https:\/\/dfh.fm\/products\/black-16t-pulley-bore-5mm-width-6mm-by-runice\"\u003eBlack 16T Pulley\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eCheck before ordering\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThis is a \u003cstrong\u003edrive pulley\u003c\/strong\u003e, not a free-spinning idler.\u003c\/li\u003e\n\u003cli\u003eThis is for \u003cstrong\u003e6 mm belts\u003c\/strong\u003e; do not use it where a 9 mm pulley is required.\u003c\/li\u003e\n\u003cli\u003eThis has a \u003cstrong\u003e5 mm bore\u003c\/strong\u003e; it is not the 6.35 mm \/ 1\/4 inch bore version.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Runice","offers":[{"title":"Default Title","offer_id":41104517497001,"sku":"6004632353","price":5.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/products\/RLA20-2GT-6-C-P5-H16.jpg?v=1654442975"},{"product_id":"16t-pulley-bore-5mm-width-6mm-by-runice","title":"Silver 16T Pulley Bore 5mm Width 6mm by Runice","description":"\u003cp\u003e\u003cstrong\u003eSilver Runice 16T 2GT timing pulley for 5 mm motor shafts and 6 mm GT2 belts.\u003c\/strong\u003e This is Runice drawing number \u003cstrong\u003eRLA16-2GT-6-C-P5-H15.5\u003c\/strong\u003e: a double-flanged, 16-tooth drive pulley for compact 3D-printer motion systems.\u003c\/p\u003e\n\u003ch3\u003eWhy this pulley\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e16T 2GT tooth profile\u003c\/strong\u003e for fine belt resolution in GT2\/2GT motion paths.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5.000 mm H7 bore\u003c\/strong\u003e fits common 5 mm stepper shafts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6 mm belt width\u003c\/strong\u003e matches standard 6 mm GT2 belt runs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble flanges plus two M4 set screws\u003c\/strong\u003e help keep the pulley located on the shaft.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer \/ MPN: \u003cstrong\u003eRunice RLA16-2GT-6-C-P5-H15.5\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTooth profile: \u003cstrong\u003e2GT \/ GT2\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTooth count: \u003cstrong\u003e16 teeth\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 length: \u003cstrong\u003e15.5 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSet screws: \u003cstrong\u003e2 × M4×0.7\u003c\/strong\u003e, 90° apart\u003c\/li\u003e\n\u003cli\u003eFinish: \u003cstrong\u003esilver\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eUse and fitment\u003c\/h3\u003e\n\u003cp\u003eUse this where your BOM calls for a \u003cstrong\u003e16T 2GT pulley with 5 mm bore and 6 mm belt width\u003c\/strong\u003e. It sits in the same Runice motion-parts family as the \u003ca href=\"https:\/\/dfh.fm\/products\/black-16t-pulley-bore-5mm-width-6mm-by-runice\"\u003eblack 16T Runice pulley\u003c\/a\u003e, \u003ca href=\"https:\/\/dfh.fm\/products\/20t-pulley-bore-5mm-width-6mm-by-runice\"\u003e20T silver Runice pulley\u003c\/a\u003e, and \u003ca href=\"https:\/\/dfh.fm\/products\/20t-idler-bore-5mm-width-6mm-by-runice\"\u003e20T Runice toothed idler\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eCheck before ordering\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThis is a \u003cstrong\u003edrive pulley\u003c\/strong\u003e, not a free-spinning idler.\u003c\/li\u003e\n\u003cli\u003eThis is \u003cstrong\u003e16T\u003c\/strong\u003e, not the more common 20T pulley.\u003c\/li\u003e\n\u003cli\u003eThis is for \u003cstrong\u003e6 mm belts\u003c\/strong\u003e, not 9 mm belt paths.\u003c\/li\u003e\n\u003cli\u003eConfirm your shaft is \u003cstrong\u003e5 mm\u003c\/strong\u003e and your belt path has room for the \u003cstrong\u003e15.5 mm\u003c\/strong\u003e pulley length.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Runice","offers":[{"title":"Default Title","offer_id":41104519528617,"sku":"8887204992","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/products\/10_d569bab5-973a-4d00-a626-e0fcdbaba8d7.png?v=1641490454"},{"product_id":"60t-bore-5-width-6-pulley","title":"60T Bore 5 Width 6 Pulley","description":"\u003cp\u003e\u003cstrong\u003e60-tooth GT2 timing pulley\u003c\/strong\u003e — 2 mm tooth pitch, \u003cstrong\u003e5 mm bore\u003c\/strong\u003e, for \u003cstrong\u003e6 mm\u003c\/strong\u003e-wide GT2 belt.\u003c\/p\u003e\n\u003cp\u003eGT2 is the motion standard for CNC and 3D-printer drives: precise tooth engagement, no ratcheting under load. A 60T pulley is the large end of a belt reduction — running it against a smaller 16T or 20T gives a 3:1 or 4:1 speed reduction with a corresponding torque increase, which is exactly how the \u003ca href=\"\/products\/micron-motion-kit\" title=\"Micron Motion Kit\"\u003eMicron Motion Kit\u003c\/a\u003e uses it: four of these 60T pulleys driven by 16T motor pulleys through Gates 2GT belts, to give the Micron its compact, high-torque X\/Y drive.\u003c\/p\u003e\n\u003ch3\u003eWhy this over the alternatives\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo Trees 60T vs. generic 60T\u003c\/strong\u003e — Two Trees spec is what the Micron motion system was designed around; the bore tolerance and grub-screw depth are clean. Aftermarket 60T pulleys in this size tend to have shallow grub screws or wobble on a 5 mm shaft.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e60T vs. 40T for the same role\u003c\/strong\u003e — 60T gives finer microstep resolution per mm of belt travel (60 teeth = 120 mm of belt per revolution vs. 80 mm on 40T), which is useful for high-precision X\/Y on a small printer like the Micron.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 mm bore vs. 8 mm bore\u003c\/strong\u003e — 5 mm fits standard NEMA 14 \/ short-shaft BLDC shafts and most 3D-printer kinematics; 8 mm is NEMA 23 territory. Use 5 mm for the Micron and most direct-drive extruder inputs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e60 teeth · GT2 (2 mm) pitch\u003c\/li\u003e\n\u003cli\u003e5 mm bore · 6 mm belt width\u003c\/li\u003e\n\u003cli\u003eSilver aluminum, single grub-screw clamping\u003c\/li\u003e\n\u003cli\u003eOutside diameter: ~38.2 mm (60 × 2 mm pitch \/ π)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIntended use\u003c\/h3\u003e\n\u003cp\u003eDesigned as a spare \/ replacement for the \u003ca href=\"\/products\/micron-motion-kit\" title=\"Micron Motion Kit\"\u003edfh Micron Motion Kit\u003c\/a\u003e (where it ships as 4× per kit, silver only). Also used directly on any short-shaft GT2 drive: Voron builds, Sherpa Mini \/ Orbiter v1.5 inputs, Eryone Thinker, and other compact CoreXY \/ belt-driven printers that use a 5 mm shaft with a 6 mm belt. Pairs with our \u003ca href=\"\/products\/gt2-40t-pulley-8mm-bore-6mm-width\" title=\"GT2 40T Timing Pulley\"\u003eGT2 40T\u003c\/a\u003e or \u003ca href=\"\/products\/gt2-20t-pulley-6-35mm-bore-6mm-width\" title=\"GT2 20T Timing Pulley\"\u003eGT2 20T\u003c\/a\u003e for a 1.5:1 or 3:1 reduction, and with Gates 2GT 6 mm belt for the actual drive loop.\u003c\/p\u003e\n\u003ch3\u003eWhat this is NOT\u003c\/h3\u003e\n\u003cp\u003eThis is a toothed GT2 pulley — not a smooth idler. If you want a non-driven tensioner wheel, use an idler pulley (the teeth aren't load-bearing on an idler, but the toothed profile keeps the belt path consistent). Also not a T5 \/ HTD \/ MXL pulley — the tooth profile doesn't interchange, and the Micron motion system is GT2 throughout.\u003c\/p\u003e","brand":"Two Trees","offers":[{"title":"Default Title","offer_id":42423298687198,"sku":"9491331169","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/products\/Untitled46.png?v=1643862294"},{"product_id":"black-16t-pulley-bore-5mm-width-6mm-by-runice","title":"Black 16T Pulley Bore 5mm Width 6mm by Runice","description":"\u003cp\u003e\u003cstrong\u003eBlack Runice 16T 2GT timing pulley for 5 mm shafts and 6 mm belts.\u003c\/strong\u003e This is the Runice RLA16-2GT-6-C-P5-H15.5 drive pulley used in Voron-style motion assemblies where a compact 16 tooth pulley, 5 mm motor-shaft bore, and 6 mm GT2\/2GT belt path are required.\u003c\/p\u003e\n\u003ch3\u003eWhy this pulley\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e16 tooth, 2 mm pitch profile\u003c\/strong\u003e for compact GT2\/2GT motion layouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 mm bore\u003c\/strong\u003e fits the standard shaft size on many NEMA 17 stepper motors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6 mm belt compatibility\u003c\/strong\u003e for Gates POWERGRIP and other 6 mm 2GT\/GT2 timing belts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack double-flanged aluminum pulley\u003c\/strong\u003e helps keep the belt captured in CoreXY and Z-drive belt paths.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Runice\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e RLA16-2GT-6-C-P5-H15.5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTooth count:\u003c\/strong\u003e 16T\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePitch\/profile:\u003c\/strong\u003e 2GT \/ GT2, 2 mm pitch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore:\u003c\/strong\u003e 5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt width:\u003c\/strong\u003e for 6 mm timing belts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall height:\u003c\/strong\u003e 15.5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e black\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003eUseful as a replacement or spare 16T drive pulley for Voron-style motion builds, including the \u003ca href=\"https:\/\/dfh.fm\/products\/voron-2-4-motion-kit-1\"\u003eVoron 2.4 Motion Kit\u003c\/a\u003e and \u003ca href=\"https:\/\/dfh.fm\/products\/voron-2-4-r2-motion-kit\"\u003eVoron 2.4 R2 Motion Kit\u003c\/a\u003e, where the BOM calls for Runice RLA16-2GT-6-C-P5-H15.5 16T B5W6 pulleys.\u003c\/p\u003e\n\u003ch3\u003eRelated options\u003c\/h3\u003e\n\u003cp\u003eNeed the same 16T size in silver? Use the \u003ca href=\"https:\/\/dfh.fm\/products\/16t-pulley-bore-5mm-width-6mm-by-runice\"\u003eSilver 16T Pulley Bore 5mm Width 6mm by Runice\u003c\/a\u003e. For 20T drive layouts, see the \u003ca href=\"https:\/\/dfh.fm\/products\/black-pulley-bore-5mm-width-6mm-by-runice\"\u003eBlack 20T Pulley\u003c\/a\u003e or \u003ca href=\"https:\/\/dfh.fm\/products\/20t-pulley-bore-5mm-width-6mm-by-runice\"\u003eSilver 20T Pulley\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eCheck before ordering\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThis is a \u003cstrong\u003edrive pulley\u003c\/strong\u003e, not a free-spinning idler.\u003c\/li\u003e\n\u003cli\u003eThis is for \u003cstrong\u003e6 mm belts\u003c\/strong\u003e; do not use it where a 9 mm pulley is required.\u003c\/li\u003e\n\u003cli\u003eThis has a \u003cstrong\u003e5 mm bore\u003c\/strong\u003e; it is not the 6.35 mm \/ 1\/4 inch bore version.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Runice","offers":[{"title":"Default Title","offer_id":42908144959710,"sku":"4794409998","price":5.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/products\/IMG_1969.png?v=1654441407"},{"product_id":"black-pulley-bore-5mm-width-6mm-by-runice","title":"Black 20T Pulley Bore 5mm Width 6mm by Runice","description":"\u003cp\u003e\u003cstrong\u003eBlack Runice GT2 20-tooth timing pulley for 5 mm motor shafts and 6 mm belts.\u003c\/strong\u003e This is the black-finished Runice RLA20-2GT-6-C-P5-H16 pulley used in precise belt-driven motion systems such as Voron-style 3D printers.\u003c\/p\u003e\n\u003ch3\u003eWhy this pulley\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2GT \/ GT2, 20-tooth profile\u003c\/strong\u003e for common 3D-printer XY and motion drives.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 mm bore\u003c\/strong\u003e fits the standard shaft size on many NEMA 17 stepper motors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6 mm belt width\u003c\/strong\u003e matches common Gates and GT2 belt layouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo M4 set screws\u003c\/strong\u003e clamp the pulley to the shaft; the flanged body helps keep the belt tracked.\u003c\/li\u003e\n\u003cli\u003eBlack finish for builds where the visible motion hardware should stay dark.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer: \u003cstrong\u003eRunice\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eManufacturer drawing \/ MPN: \u003cstrong\u003eRLA20-2GT-6-C-P5-H16\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTooth profile: \u003cstrong\u003e2GT \/ GT2\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTooth count: \u003cstrong\u003e20T\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBore: \u003cstrong\u003e5.000 mm H7\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBelt width: \u003cstrong\u003e6 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOverall length: \u003cstrong\u003e16.0 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSet screws: \u003cstrong\u003e2 × M4 × 0.7\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFinish: \u003cstrong\u003eblack\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment and pairing\u003c\/h3\u003e\n\u003cp\u003eThis pulley is listed in the \u003ca href=\"https:\/\/dfh.fm\/products\/voron-2-4-motion-kit-1\"\u003eVoron 2.4 Motion Kit\u003c\/a\u003e BOM as the 20T B5W6 Runice RLA20-2GT-6-C-P5-H16 pulley. For nearby options, compare the \u003ca href=\"https:\/\/dfh.fm\/products\/20t-pulley-bore-5mm-width-6mm-by-runice\"\u003estandard 20T 5 mm bore \/ 6 mm width Runice pulley\u003c\/a\u003e or the \u003ca href=\"https:\/\/dfh.fm\/products\/black-pulley-bore-5mm-width-9mm-by-runice\"\u003eblack 20T 5 mm bore \/ 9 mm width Runice pulley\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eGotchas\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThis is for \u003cstrong\u003e6 mm GT2\/2GT belt\u003c\/strong\u003e; do not use it where the build calls for a 9 mm or 10 mm belt pulley.\u003c\/li\u003e\n\u003cli\u003eIt is a drive pulley, not a free-spinning idler.\u003c\/li\u003e\n\u003cli\u003eCheck pulley height and belt path against your specific motion system before ordering replacements for non-Voron machines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote\u003e“They fulfill their purpose and the paint seems to be fine.”\u003c\/blockquote\u003e","brand":"Runice","offers":[{"title":"Default Title","offer_id":42908218949854,"sku":"9420152248","price":6.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/products\/IMG_1968.png?v=1654443033"},{"product_id":"black-pulley-bore-5mm-width-9mm-by-runice","title":"Black 20T Pulley Bore 5mm Width 9mm by Runice","description":"\u003cp\u003e\u003cstrong\u003eRunice 20T 2GT timing pulley for 9mm belt builds.\u003c\/strong\u003e This black-finish Runice drive pulley gives you a 20-tooth 2GT\/GT2 tooth profile, a 5mm H7 bore for common NEMA 17 motor shafts, and a set-screw hub for printer motion systems that call for 9mm-class belts.\u003c\/p\u003e\n\n\u003ch3\u003eWhy use the 9mm pulley\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e9mm belt class:\u003c\/strong\u003e the wider belt gives more stiffness than a 6mm motion belt when the build calls for it.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2GT \/ GT2 profile:\u003c\/strong\u003e works with 2mm-pitch Gates-style GT2 belts and with GT3 belts that are run on 2GT pulleys.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRunice drawing-backed dimensions:\u003c\/strong\u003e the product drawing identifies DWG\/MPN \u003cstrong\u003eRLA20-2GT-9-P5-C-H20\u003c\/strong\u003e, 20 teeth, 5mm H7 bore, and 20.0mm overall length.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMotion-project fit:\u003c\/strong\u003e suitable for Monolith-style and other Voron\/DIY printer motion builds that specify a 20T, 5mm-bore pulley for 9mm belt.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eManufacturer: \u003cstrong\u003eRunice\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eMPN \/ drawing number: \u003cstrong\u003eRLA20-2GT-9-P5-C-H20\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eTooth profile: \u003cstrong\u003e2GT \/ GT2, 2mm pitch\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eTooth count: \u003cstrong\u003e20T\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eBore: \u003cstrong\u003e5.000mm H7\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eBelt width class: \u003cstrong\u003e9mm\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eOuter diameter shown on drawing: \u003cstrong\u003e15.00mm flange OD\u003c\/strong\u003e; tooth OD shown as \u003cstrong\u003e12.22mm\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eOverall length shown on drawing: \u003cstrong\u003e20.0mm\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003eMounting: hub with \u003cstrong\u003e2 × M4×0.7\u003c\/strong\u003e set-screw holes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePairs with\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"https:\/\/dfh.fm\/products\/gates-2gt-rf-9mm\"\u003eGates LL-2GT 9mm RF timing belt\u003c\/a\u003e for standard 9mm GT2 motion runs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"https:\/\/dfh.fm\/products\/gates-ll-2gt-9-high-temperature-epdm-timing-belt\"\u003eGates LL-2GT 9mm EPDM high-temp belt\u003c\/a\u003e for hotter enclosed builds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"https:\/\/dfh.fm\/products\/gates-ll-3gt-gt3-9mm-rf-belt\"\u003eGates LL-3GT 9mm RF belt\u003c\/a\u003e when your build wants the higher-performance GT3 belt on 2GT-compatible pulleys.\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"https:\/\/dfh.fm\/products\/20t-idler-bore-5mm-width-9mm-by-runice\"\u003eRunice 20T 9mm idler\u003c\/a\u003e when the belt path needs a bearing idler instead of a driven pulley.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eChoosing the right one\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUse this pulley when your BOM calls for a \u003cstrong\u003e20T pulley, 5mm bore, 9mm belt width\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003eIf your build uses 6mm belts instead, use the \u003ca href=\"https:\/\/dfh.fm\/products\/black-pulley-bore-5mm-width-6mm-by-runice\"\u003eblack Runice 20T 6mm pulley\u003c\/a\u003e.\u003c\/li\u003e\n  \u003cli\u003eIf the part rides on a fixed shaft or bearing rather than driving from a motor shaft, you probably need an idler, not this pulley.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat it is not\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eNot a bearing idler.\u003c\/li\u003e\n  \u003cli\u003eNot a 6mm belt-width pulley.\u003c\/li\u003e\n  \u003cli\u003eNot a complete motion kit; this is one pulley.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Runice","offers":[{"title":"Default Title","offer_id":43543280582878,"sku":"9336393402","price":6.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/products\/Untitled32_24571074-ceaa-476f-9dc6-63f21ccff9bd.jpg?v=1666138399"},{"product_id":"gt2-40t-pulley-8mm-bore-6mm-width","title":"GT2 40T Timing Pulley — 8mm Bore, 6mm Width","description":"\u003cp\u003e\u003cstrong\u003e40-tooth GT2 timing pulley\u003c\/strong\u003e — 2 mm tooth pitch, \u003cstrong\u003e8 mm bore\u003c\/strong\u003e, for \u003cstrong\u003e6 mm\u003c\/strong\u003e-wide GT2 belt.\u003c\/p\u003e\n\u003cp\u003eGT2 is the motion standard for CNC and 3D-printer drives: precise tooth engagement, no ratcheting under load. A 40T pulley runs as the larger pulley in a belt reduction (more torque, finer resolution) or as a synchronous drive pulley. Used on the Millennium Mills Milo and any GT2 motion system.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e40 teeth · GT2 (2 mm) pitch\u003c\/li\u003e\n\u003cli\u003e8 mm bore · 6 mm belt width\u003c\/li\u003e\n\u003cli\u003eGrub-screw clamping\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dfh.fm","offers":[{"title":"Default Title","offer_id":43719028900062,"sku":"8428439923","price":6.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/products\/GT2_40T_Pulley_8mm_bore_6mm_width.jpg?v=1670276307"},{"product_id":"gt2-20t-pulley-6-35mm-bore-6mm-width","title":"GT2 20T Timing Pulley — 6.35mm (1\/4\") Bore, 6mm Width","description":"\u003cp\u003e\u003cstrong\u003e20-tooth GT2 timing pulley\u003c\/strong\u003e — 2 mm tooth pitch, \u003cstrong\u003e6.35 mm (1\/4\")\u003c\/strong\u003e bore, for \u003cstrong\u003e6 mm\u003c\/strong\u003e-wide GT2 belt.\u003c\/p\u003e\n\u003cp\u003eThe 6.35 mm bore drops straight onto a 1\/4\" motor or jackshaft — handy where a metric bore won't fit. GT2's precise tooth profile gives low-backlash motion for CNC and 3D-printer drives. Pairs with a larger pulley for a belt reduction, or runs 1:1. Used on the Millennium Mills Milo and any GT2 motion system.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e20 teeth · GT2 (2 mm) pitch\u003c\/li\u003e\n\u003cli\u003e6.35 mm (1\/4\") bore · 6 mm belt width\u003c\/li\u003e\n\u003cli\u003eGrub-screw clamping\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dfh.fm","offers":[{"title":"Default Title","offer_id":43719032439006,"sku":"4247721207","price":5.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/products\/gt2_pulley_6.35mm_bore_6mm_width.jpg?v=1670276558"}],"url":"https:\/\/formosissima.myshopify.com\/collections\/pulleys.oembed","provider":"dfh.fm","version":"1.0","type":"link"}