---
product_id: 741458151
title: "300mm Ball Screw SFU1204 RM1204 with Nut (End Processing) Precision Part for CNC Machine"
brand: "nuibbyed"
price: "208 zł"
currency: PLN
in_stock: true
reviews_count: 9
category: "Nuibbyed"
url: https://www.desertcart.pl/products/741458151-300mm-ball-screw-sfu1204-rm1204-with-nut-end-processing-precision
store_origin: PL
region: Poland
---

# 300mm precision length 4mm lead pitch for smooth motion 12mm diameter ball screw 300mm Ball Screw SFU1204 RM1204 with Nut (End Processing) Precision Part for CNC Machine

**Brand:** nuibbyed
**Price:** 208 zł
**Availability:** ✅ In Stock

## Summary

> ⚙️ Elevate your CNC game with precision that moves you!

## Quick Answers

- **What is this?** 300mm Ball Screw SFU1204 RM1204 with Nut (End Processing) Precision Part for CNC Machine by nuibbyed
- **How much does it cost?** 208 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/741458151-300mm-ball-screw-sfu1204-rm1204-with-nut-end-processing-precision)

## 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

- • **Smooth, Low-Friction Operation:** Experience minimal heat and noise thanks to advanced low-friction design—boosting efficiency and lifespan.
- • **Cost-Effective Performance Upgrade:** High accuracy and durability at a fraction of premium brand prices—smart investment for pros and makers.
- • **Versatile for DIY & Industrial Use:** Perfect for CNC machines, student projects, and creative manufacturing—unlock your innovation potential.
- • **End-Processed for Ready Integration:** Comes with precision end processing for seamless installation and reduced setup time.
- • **Precision Engineered for CNC Mastery:** Upgrade your CNC projects with ultra-accurate 12mm diameter ball screw and nut combo.

## Overview

The 300mm Ball Screw SFU1204 RM1204 with Nut is a precision-engineered linear motion component featuring a 12mm diameter and 4mm lead pitch. Designed for CNC machines and DIY projects, it offers low friction, reduced noise, and long service life. End-processed for easy integration, this ball screw delivers high accuracy and smooth operation, making it a cost-effective upgrade for professionals and hobbyists alike.

## Description

1 x Ball Screw 1204-300mm,1 x Nut.

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

- 1 x Ball Screw 1204-300mm,1 x Nut.
- Ball screw diameter: 12mm; Lead / Pitch: 4mm; Total length:300mm 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 | B0CP21P5HP |
| Best Sellers Rank | #92,844 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #5 in Linear Motion Ball Screws |
| Date First Available | November 27, 2023 |
| Item Weight | 10.6 ounces |
| Manufacturer | NUIBBYED |
| Package Dimensions | 11.97 x 2.4 x 1.42 inches |

## Images

![300mm Ball Screw SFU1204 RM1204 with Nut (End Processing) Precision Part for CNC Machine - Image 1](https://m.media-amazon.com/images/I/412NlDOjGXL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## 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.

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-03-14*