--- product_id: 581357617 title: "23.62 inch / 600mm Ball Screw RM1204 SFU1204 (End Processing) with Metal Ball..." brand: "nuibbyed" price: "$115.67" currency: USD in_stock: true reviews_count: 9 category: "Nuibbyed" url: https://www.desertcart.us/products/581357617-23-62-inch-600mm-ball-screw-rm1204-sfu1204-end-processing store_origin: US region: United States of America --- # 600mm precision length 4mm lead pitch for smooth motion 12mm diameter ball screw 23.62 inch / 600mm Ball Screw RM1204 SFU1204 (End Processing) with Metal Ball... **Brand:** nuibbyed **Price:** $115.67 **Availability:** ✅ In Stock ## Summary > ⚙️ Elevate your CNC game with precision that moves you! ## Quick Answers - **What is this?** 23.62 inch / 600mm Ball Screw RM1204 SFU1204 (End Processing) with Metal Ball... by nuibbyed - **How much does it cost?** $115.67 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/581357617-23-62-inch-600mm-ball-screw-rm1204-sfu1204-end-processing) ## Best For - nuibbyed enthusiasts ## Why This Product - Trusted nuibbyed brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durability Meets Silence:** Low friction design minimizes noise and heat, extending service life and reducing power consumption—work smarter, not harder. - • **Complete Ready-to-Install Kit:** Includes metal ball nut, BK10/BF10 support bearings, and coupler—everything you need to upgrade your machine instantly. - • **Cost-Effective Precision Upgrade:** Top-tier performance rivaling premium brands at a fraction of the cost—ideal for makers, students, and industrial innovators. - • **Smooth, Stick-Slip Free Operation:** Experience flawless linear motion with no stick-slip effect, perfect for high-accuracy machining and 3D printing. - • **Precision Engineered for CNC Mastery:** 600mm length with end processing ensures exact fit and superior control for your DIY or professional CNC projects. ## Overview The 23.62 inch (600mm) RM1204 SFU1204 ball screw assembly features a 12mm diameter screw with a 4mm lead pitch, complete with metal ball nut, BK10/BF10 support bearings, and coupler. Designed for CNC machines, 3D printers, and DIY projects, it offers low friction, reduced noise, and minimal heat generation for long-lasting, smooth, and efficient linear motion. This kit provides a cost-effective, high-precision upgrade favored by professionals and hobbyists alike. ## Description 23.62 inch / 600mm Ball Screw RM1204 SFU1204 (End Processing) with Metal Ball Screw Nut and BK10/BF10 End Supports for DIY CNC Machine and 3D Printer: desertcart.com: Industrial & Scientific Review: Excellent build quality - I purchased these to upgrade a CNC wood router. The build quality is excellent and the accuracy is well above the simple plastic nut lead screws I am replacing. The only concern is that one needs to provide a suitable bellowed covering to prevent dust from getting into the ball screws. I plan to use thin plastic poly wrap tubing and 3d printed parts to achieve this. Review: Worse than c7 grade. Be prepared to work on it a little. - Good: The bearing blocks, hardware are quite ok. Less than .0005" runout between the ball screw races and ball nut. Bad: operation to turn the screw ends down was done poorly. Bad surface quality. Chuck marks catch the ball nut at either end of travel on the screw. Heres the tir i got from the ball nut to either screw end .003" runout on fixed end. Nearly .005" on the floated end. If end user wishes? You can make a ball nut ball retainer on your 3d printer, take the nut off, clean up the screw and repack the nut. Can re-grind the ends also concentric to the ball nut and take down any holding/tooling marks with a stone and flex abbrasive. My other option was a used thk that cost 10x more. Little elbow grease saves a lot of money. Be aware what you're getting into. ## Features - Ballscrew RM1204 600mm( End Processing) with a Ballnut + 1 Set BK10 and BF10 Support,and Coupler for CNC Machine. - Ball screw diameter: 12mm; Lead / Pitch: 4mm; Total length:600mm with end processing. - Long service life time due to low friction,low operation noise. - No stick-slip effect,heats up less,reduce driving power required. - Can be used for CNC,machine DIY,student project,home project,simple experiments and other creative,manufacturing and industrial needs. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BC7V1PRW | | Best Sellers Rank | #39,580 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Linear Motion Ball Screws | | Date First Available | August 29, 2022 | | Item Weight | 2.99 pounds | | Item model number | 1204-600QC | | Manufacturer | NUIBBYED | | Package Dimensions | 24 x 3.5 x 2.5 inches | ## Images ![23.62 inch / 600mm Ball Screw RM1204 SFU1204 (End Processing) with Metal Ball... - Image 1](https://m.media-amazon.com/images/I/51J0nP601EL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent build quality *by D***N on February 24, 2025* I purchased these to upgrade a CNC wood router. The build quality is excellent and the accuracy is well above the simple plastic nut lead screws I am replacing. The only concern is that one needs to provide a suitable bellowed covering to prevent dust from getting into the ball screws. I plan to use thin plastic poly wrap tubing and 3d printed parts to achieve this. ### ⭐⭐⭐ Worse than c7 grade. Be prepared to work on it a little. *by B***N on June 1, 2024* Good: The bearing blocks, hardware are quite ok. Less than .0005" runout between the ball screw races and ball nut. Bad: operation to turn the screw ends down was done poorly. Bad surface quality. Chuck marks catch the ball nut at either end of travel on the screw. Heres the tir i got from the ball nut to either screw end .003" runout on fixed end. Nearly .005" on the floated end. If end user wishes? You can make a ball nut ball retainer on your 3d printer, take the nut off, clean up the screw and repack the nut. Can re-grind the ends also concentric to the ball nut and take down any holding/tooling marks with a stone and flex abbrasive. My other option was a used thk that cost 10x more. Little elbow grease saves a lot of money. Be aware what you're getting into. ### ⭐⭐⭐⭐ Hit. And a miss. *by Z***S on September 13, 2023* Best ball screw nut to screw fit I've seen in the past year over a dozen or so Chinese ball screws from 12mm to 20mm. Once it was cleaned (yes YOU clean it) and lubricated (again YOU), the motion was consistent over the 400mm with little to no binding and no grit. The fit was great.. I'm used to having to repack the but with bigger balls to get a proper fit, but this one was spot on. For you newbies, you do not want it to just spin freely. Packaging was great and shipping time was quick. Now the bad.. how is it possible to send these out with diameters that do not fit inside the bearing blocks? They're oversized and will not go! Little bit of elbow grease fixed it but I don't understand how that slips through QC. Overall, great deal for the price.. but do not expect perfection. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/581357617-23-62-inch-600mm-ball-screw-rm1204-sfu1204-end-processing](https://www.desertcart.us/products/581357617-23-62-inch-600mm-ball-screw-rm1204-sfu1204-end-processing) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-10*