{"product_id":"3m-bf-type-timing-belt-pulley-55-60t-synchronous-wheel-10mm-15mm-belt","title":"3M BF-Type Timing Belt Pulley 55\/60T Synchronous Wheel For 10mm\/15mm Width Belt","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e3M BF-Type Timing Belt Pulley — Precision Synchronous Wheel for 10mm \u0026amp; 15mm Belts\u003c\/h2\u003e\n\u003cp\u003eWhen your DIY automation project demands slip-free, synchronized motion, a mismatched or low-tolerance pulley is the first thing that will let you down. Makers, hobbyists, and small-workshop engineers building 3D printers, CNC routers, conveyor systems, or robotic arms need a timing pulley that locks onto the belt pitch perfectly and holds position under load. The 3M BF-type timing belt pulley is engineered for exactly that — delivering reliable synchronous drive in compact, precision-critical applications.\u003c\/p\u003e\n\u003cp\u003eThis pulley is machined to the 3M tooth profile (3mm pitch) and is available in two tooth counts — 55T and 60T — paired with a BF-type hub that accepts a set-screw for secure shaft retention. Bore diameters range from 5mm to 25mm (approximately 0.20\" to 0.98\"), and the pulley body accommodates either 10mm (~0.39\") or 15mm (~0.59\") wide timing belts. The flanged design keeps the belt tracking true even at higher speeds.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include desktop CNC axis drives requiring precise lead-screw-free motion, 3D printer X\/Y gantry systems using 3M open-ended belts, light-duty conveyor and indexing table builds in educational labs, and small robotic joint actuators where backlash must be minimized. The wide bore-size selection makes this pulley a versatile drop-in for both metric and fractional shaft diameters.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for \u003cstrong\u003e3M pitch (3mm) timing belts\u003c\/strong\u003e with widths of \u003cstrong\u003e10mm or 15mm\u003c\/strong\u003e. BF-type hub with set-screw bore retention. Verify your shaft diameter and belt width before ordering.\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These 3M BF-Type Timing Belt Pulleys\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🦷\u003c\/span\u003e\n\u003cstrong\u003e55T \u0026amp; 60T Options\u003c\/strong\u003e\n\u003cp\u003eChoose between 55-tooth and 60-tooth configurations to match your drive ratio requirements. More teeth mean smoother engagement and lower belt stress at equivalent speeds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n\u003cstrong\u003e3M Pitch Profile\u003c\/strong\u003e\n\u003cp\u003eMachined to the standard 3mm tooth pitch, ensuring full mesh with any 3M-profile timing belt. Consistent tooth geometry prevents skipping under load.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e\n\u003cstrong\u003eBF-Type Hub with Set-Screw\u003c\/strong\u003e\n\u003cp\u003eThe BF-type flanged hub includes a set-screw bore for positive shaft locking. No keyway required — simply tighten onto your shaft for immediate, secure retention.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\n\u003cstrong\u003eWide Bore Range (5mm–25mm)\u003c\/strong\u003e\n\u003cp\u003eAvailable in bore diameters from 5mm to 25mm (0.20\"–0.98\"), covering common metric and fractional shaft sizes used in DIY CNC, 3D printing, and automation builds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\n\u003cstrong\u003eFlanged Design for Belt Retention\u003c\/strong\u003e\n\u003cp\u003eIntegrated flanges on both sides of the pulley body keep the timing belt centered and prevent lateral drift, even during direction reversals or variable-load operation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\n\u003cstrong\u003e10mm \u0026amp; 15mm Belt Width Compatibility\u003c\/strong\u003e\n\u003cp\u003eEach variant is specified for either 10mm or 15mm belt widths, letting you match the pulley precisely to your belt stock for optimal load distribution and tracking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — 3M BF-Type Timing Belt Pulley\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eTooth Profile\u003c\/th\u003e\n\u003ctd\u003e3M (3mm pitch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHub Type\u003c\/th\u003e\n\u003ctd\u003eBF-type (flanged, set-screw bore)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of Teeth\u003c\/th\u003e\n\u003ctd\u003e55T or 60T (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBore Diameter\u003c\/th\u003e\n\u003ctd\u003e5mm – 25mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Belt Width\u003c\/th\u003e\n\u003ctd\u003e10mm or 15mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePitch Diameter (55T)\u003c\/th\u003e\n\u003ctd\u003e~52.5mm (~2.07\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePitch Diameter (60T)\u003c\/th\u003e\n\u003ctd\u003e~57.3mm (~2.26\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlange\u003c\/th\u003e\n\u003ctd\u003eYes, both sides\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShaft Retention\u003c\/th\u003e\n\u003ctd\u003eSet-screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish \/ Color\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose between 55T and 60T?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe tooth count determines your drive ratio. A 55T pulley paired with a smaller driver pulley gives a different speed\/torque ratio than a 60T. If you need a specific output RPM or torque multiplication, calculate your ratio using (driven teeth ÷ driver teeth). For most desktop CNC and 3D printer gantry applications where both pulleys are the same size, either tooth count works — choose 60T for slightly smoother belt engagement at higher speeds.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhich bore size should I select for my shaft?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eSelect the bore diameter that matches your motor or drive shaft. Common sizes include 5mm and 6.35mm (1\/4\") for small stepper motors, 8mm for NEMA 23-class motors, and 10mm–25mm for larger servo or gearbox shafts. If your shaft has a flat (D-cut), the set-screw will seat against it for extra security. Measure your shaft with calipers before ordering.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the plain bore variants and the keyed bore variants (e.g., 8mm(3×1.4mm))?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eVariants listed as, for example, \"8mm(3×1.4mm)\" indicate a bore with a keyway slot — in this case 3mm wide × 1.4mm deep — for use with a matching key and keyway shaft. Plain bore variants (e.g., \"8mm\") use only the set-screw for retention. If your shaft has a machined keyway, select the matching keyed bore variant for maximum torque transmission without slippage.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill this pulley work with any 3M timing belt?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes — this pulley is machined to the standard 3M tooth profile (3mm pitch, 1.2mm tooth height), so it is compatible with any 3M open-ended or closed-loop timing belt of the correct width. Ensure your belt width matches the variant you select: 10mm belt variants for 10mm-wide belts, and 15mm belt variants for 15mm-wide belts. Mixing belt widths and pulley widths will cause tracking issues.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow strong is the set-screw retention? Will the pulley slip under load?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe BF-type set-screw hub provides reliable retention for typical DIY and light-industrial loads. For best results, tighten the set-screw against a flat on the shaft (D-cut) or use a keyed bore variant for higher-torque applications. If your application involves frequent direction reversals or shock loads, consider applying a small amount of thread-locking compound to the set-screw after final alignment.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this pulley corrosion-resistant? Can I use it in humid or outdoor environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe corrosion resistance depends on the material and finish of the specific variant. For humid or mildly corrosive environments, we recommend selecting a variant with an anodized or coated finish if available, or applying a light machine oil after installation. For outdoor or wash-down environments, contact us to confirm the best variant for your conditions.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this pulley on both the driver and driven side of my belt drive?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. The 3M BF-type pulley can be used on either the driver (motor) side or the driven (load) side of a belt transmission. When used as a matched pair (same tooth count on both sides), you get a 1:1 speed ratio with synchronized motion — ideal for gantry systems. Mix tooth counts to achieve speed reduction or increase.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-cta\"\u003e\n🛒 Select your bore diameter \u0026amp; belt width above, then add to cart.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"BF-type \/ 55T \/ 6mm \u0026 10mm","offer_id":52446708072722,"sku":"GLFBBYWGLBZSJ065203x1","price":23.02,"currency_code":"USD","in_stock":true},{"title":"BF-type \/ 55T \/ 8mm \u0026 10mm","offer_id":52446708105490,"sku":"GLFBBYWGLBZSJ065204x1","price":23.02,"currency_code":"USD","in_stock":true},{"title":"BF-type \/ 55T \/ 10mm \u0026 10mm","offer_id":52446708138258,"sku":"GLFBBYWGLBZSJ065205x1","price":23.02,"currency_code":"USD","in_stock":true},{"title":"BF-type \/ 55T \/ 12mm \u0026 10mm","offer_id":52446708171026,"sku":"GLFBBYWGLBZSJ065206x1","price":23.02,"currency_code":"USD","in_stock":true},{"title":"BF-type \/ 55T \/ 14mm \u0026 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