{"product_id":"300mm-ball-screw-sfu1605-300mm-ballscrew-rm1605-5mm-pitch-precision","title":"300mm Ball Screw SFU1605 300mm Ballscrew RM1605 5mm Pitch - Precision","description":"\u003cp\u003eIn this review the 300mm Ball Screw SFU1605 is evaluated for hobbyist and light industrial CNC builders who need a precise, compact linear drive. The bottom line: this kit delivers a well machined RM1605\/SFU1605 ballscrew with \u003cstrong\u003eC7 precision\u003c\/strong\u003e and a preassembled ballnut housing that reduces starting torque, making it useful for retrofit and custom machines where smooth, low-friction linear travel matters most.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e300mm length:\u003c\/strong\u003e The 11.8 in overall length includes end machined sections ready for immediate installation in short travel axes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRM1605 \/ SFU1605 profile:\u003c\/strong\u003e The 16 mm diameter and 5 mm pitch strike a balance between stiffness and resolution for small CNC gantries.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eC7 precision finish:\u003c\/strong\u003e A shiny, matched surface reduces friction and wear so the screw lasts longer under regular use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSG16H ballnut housing:\u003c\/strong\u003e The preinstalled housing gives minimum starting torque and simplifies mounting compared with loose components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBK12 and BF12 supports:\u003c\/strong\u003e Included end supports provide proper bearing support and alignment for reliable axial motion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6.35 x 10 mm coupler:\u003c\/strong\u003e A standard coupler is supplied so the screw can be coupled directly to common stepper or servo motor shafts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis product suits makers, small CNC builders, and robotics hobbyists upgrading linear axes where a compact, durable screw is required. Its \u003cstrong\u003elow starting torque\u003c\/strong\u003e and matched nut housing help on projects with modest motors or tight torque budgets.\u003c\/p\u003e\n\u003cp\u003eIt is less suitable for heavy industrial presses or long-travel machines where larger diameter screws and different precision grades would be appropriate. If your application demands extreme axial load capacity or long stroke lengths, consider a larger series ballscrew.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh surface finish and C7 precision improve smoothness and reduce wear over time.\u003c\/li\u003e\n\u003cli\u003eComplete kit with BK\/BF supports and coupler reduces sourcing and assembly time.\u003c\/li\u003e\n\u003cli\u003eDSG16H ballnut housing lowers starting torque so smaller motors can be used.\u003c\/li\u003e\n\u003cli\u003eCompact 300 mm overall length ideal for retrofit into short-travel machines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNot intended for heavy loads or very long travel where a larger diameter or different pitch would be preferable.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eSFU1605 \/ RM1605\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall length\u003c\/td\u003e\n\u003ctd\u003e300 mm (11.8 in) including machined ends\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e16 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePitch\u003c\/td\u003e\n\u003ctd\u003e5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBallnut housing\u003c\/td\u003e\n\u003ctd\u003eDSG16H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnd supports\u003c\/td\u003e\n\u003ctd\u003eBK12 and BF12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoupler\u003c\/td\u003e\n\u003ctd\u003e6.35 x 10 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe SFU1605 300 mm ballscrew kit is a sensible value for hobbyists and small machine builders who need a durable, low-torque linear drive in a compact form. It combines a matched C7 finish screw, DSG16H ballnut housing and support hardware so installers save time and get predictable performance for light to moderate loads.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan I remove the ballnut from the screw?\u003c\/strong\u003e\u003cbr\u003eIt is advised not to remove the ballnut because the nut and screw are matched; removing it may make reinstallation difficult.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat motor shaft fits the supplied coupler?\u003c\/strong\u003e\u003cbr\u003eThe supplied coupler fits a 6.35 mm (1\/4 in) motor shaft to a 10 mm screw end or matching adapter as provided.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this suitable for long travel CNC axes?\u003c\/strong\u003e\u003cbr\u003eFor long travel or heavy load axes, a larger diameter series would be a better choice; this 300 mm SFU1605 is optimized for compact, short-travel applications.\u003c\/p\u003e","brand":"GUWANJI","offers":[{"title":"Default Title","offer_id":48240164077787,"sku":"B08B664WJ1","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61JdHac95tL._SL1500.jpg?v=1776268952","url":"https:\/\/gearmusthave.com\/products\/300mm-ball-screw-sfu1605-300mm-ballscrew-rm1605-5mm-pitch-precision","provider":"GearMustHave","version":"1.0","type":"link"}