{"product_id":"25mm-ballscrew-sfu2505-rm2505-240mm-5mm-pitch-precision-cnc-part","title":"25mm Ballscrew SFU2505 RM2505 240mm 5mm Pitch - Precision CNC Part","description":"\u003cp\u003eIn this review of the 25mm Ballscrew SFU2505 RM2505 the bottom line is simple: it is a compact, high-precision linear motion component aimed at hobbyists and small-scale CNC builders who need reliable positional accuracy without end processing. The reviewer found the rolled-thread C7 precision, 25mm diameter and 5mm lead deliver smooth, low-friction motion and reduced driving power for micro-feeding and higher-speed runs. The unit ships as a 240mm length screw with a metal nut and no end processing, so it suits projects where the builder will handle coupling and end machining.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e25mm diameter:\u003c\/strong\u003e Provides increased stiffness for smaller CNC gantries and reduces deflection under load compared with thinner screws.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5mm pitch (lead):\u003c\/strong\u003e Balances travel speed and resolution so users get predictable motion for both positioning and continuous movement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e240mm total length:\u003c\/strong\u003e A compact size that fits desktop machines or retrofits where long travel is not required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eC7 precision:\u003c\/strong\u003e Rolled-thread manufacturing gives consistent geometry and acceptable tolerance for many workshop applications while keeping cost reasonable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal deflector nut included:\u003c\/strong\u003e The ball nut reduces stick-slip and lowers starting torque for smoother, quieter operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo end processing:\u003c\/strong\u003e Supplied as-is to let builders customize shaft ends, couplings, and mounts to exact machine requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThe SFU2505 suits hobby machinists, small CNC router and mill builders, and motion-system tinkerers who want a ready-made screw and nut with reliable ball recirculation and moderate precision. It is especially useful when a compact 240mm length and 25mm shaft stiffness are preferred.\u003c\/p\u003e\u003cp\u003eThose who require plug-and-play shafts with machined ends or preinstalled couplings should look elsewhere or plan for extra machining. Users who demand C5 grade accuracy for high-end industrial machines should contact the seller for the upgraded grade rather than relying on the default C7 offering.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHigh stiffness from the 25mm diameter improves positional stability under load.\u003c\/li\u003e\n\u003cli\u003eBall motion and metal nut eliminate sliding friction, reducing heat and power draw during runs.\u003c\/li\u003e\n\u003cli\u003eC7 Rolled-thread construction gives dependable accuracy for many CNC and linear motion tasks.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eNo end processing means additional machining or custom coupling work is required before installation in many systems.\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eSFU2505 RM2505\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLead \/ Pitch\u003c\/td\u003e\n\u003ctd\u003e5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Length\u003c\/td\u003e\n\u003ctd\u003e240mm (9.45 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrecision Grade\u003c\/td\u003e\n\u003ctd\u003eC7 (upgrade available to C5)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eGCr15 steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003ctd\u003e1x ball screw, 1x metal deflector ballscrew nut (no end processing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe SFU2505 RM2505 is a practical, value-oriented ballscrew for DIY and small- to medium-scale CNC projects where stiffness and smooth ball-driven motion matter more than pre-machined ends. It delivers low noise, reduced driving power, and reliable positioning at C7 tolerance; buyers who need finished shaft ends or higher precision should plan for additional processing or request the upgraded grade.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eDoes the screw come with machined ends?\u003c\/strong\u003e\u003cbr\u003eNo, this item is supplied with no end processing so users must machine or fit couplings to their requirements.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat precision grade is supplied?\u003c\/strong\u003e\u003cbr\u003eThe standard supply is C7 rolled-thread precision; C5 is available by contacting the seller for higher accuracy.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs a nut included?\u003c\/strong\u003e\u003cbr\u003eYes, the product includes a metal deflector ballscrew nut for ball circulation and smoother operation.\u003c\/p\u003e","brand":"Mssoomm","offers":[{"title":"Default Title","offer_id":48607426937051,"sku":"B088QVH4LC","price":92.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61nQmhxrMoL._SL1500.jpg?v=1778420813","url":"https:\/\/gearmusthave.com\/products\/25mm-ballscrew-sfu2505-rm2505-240mm-5mm-pitch-precision-cnc-part","provider":"GearMustHave","version":"1.0","type":"link"}