--- product_id: 67824648 title: "500mm Horizontal Optical Axis & Flexible Shaft Coupling & 8mm Lead Screw Dual Rail Shaft Support Pillow Block Bearings pack of 15" brand: "mergorun" price: "NT$772" currency: TWD in_stock: false reviews_count: 4 url: https://www.desertcart.tw/products/67824648-500mm-horizontal-optical-axis-and-flexible-shaft-coupling-and-8mm store_origin: TW region: Taiwan --- # 500mm precision shaft length 8mm lead screw diameter for smooth motion 15-piece complete CNC-grade mounting set 500mm Horizontal Optical Axis & Flexible Shaft Coupling & 8mm Lead Screw Dual Rail Shaft Support Pillow Block Bearings pack of 15 **Brand:** mergorun **Price:** NT$772 **Availability:** ❌ Out of Stock ## Summary > ⚙️ Elevate your build with precision and power — don’t get left behind! ## Quick Answers - **What is this?** 500mm Horizontal Optical Axis & Flexible Shaft Coupling & 8mm Lead Screw Dual Rail Shaft Support Pillow Block Bearings pack of 15 by mergorun - **How much does it cost?** NT$772 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/67824648-500mm-horizontal-optical-axis-and-flexible-shaft-coupling-and-8mm) ## Best For - mergorun enthusiasts ## Why This Product - Trusted mergorun brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Robust 8mm Lead Screw:** Optimized for reliable, backlash-free performance in 3D printing and CNC machines. - • **Versatile Compatibility:** Perfect for electronic equipment, guide bars, drive shafts, and precision machine tools. - • **Complete 15-Piece Mounting Kit:** Includes pillow block bearings, linear rail supports, and flexible couplings for seamless assembly. - • **Precision Engineered 500mm Optical Axis:** Ensures ultra-smooth linear motion for high-accuracy applications. - • **Durable Stainless Steel & Aluminum Build:** Combines corrosion resistance with lightweight strength for long-lasting use. ## Overview This 15-piece set from Mergorun features a 500mm stainless steel optical axis, an 8mm lead screw, pillow block bearings, linear rail supports, and flexible shaft couplings. Designed for high-precision applications like 3D printing and CNC machinery, it offers robust durability and seamless integration for professional-grade mechanical assemblies. ## Description Specification: Color: Silver and Gray Total Weight: 972g Feature: 1. Bearing Pillow Block have a certain bearing capacity, can hold in ordinary precision rack, strong adaptability. 2. Lead Screw are widely used for machine tools, like 3D printing. 3. Shaft Optical Axis suitable for kinds of electronic equipment/guide bar, drive shaft, pillar. 4. This set includes Optical Axis & Lead Screw, Pillow Block Bearing, Linear Rail Support, CNC Stepper Coupler and Ball Bearing. Accessories: 2PCS Zinc Alloy 8mm Inner Dia 55x13x30mm Pillow Block Bearing 4PCS Aluminum 8mm Innner Dia 42x32x11mm SK8 Linear Rod Rail Support Guide Shaft Bearing 2PCS Aluminium Alloy D19L25 5x8mm Flexible Shaft Coupling 4PCS 8mm Inner Dia L34.5mm SCS8UU Linear Bearing 2PCS 8mm L500mm Linear Shaft Optical Axis 1PCS Stainless Steel & Brass L500mm D8mm 8mm Lead Screw Nut Package Include: 1 Set of Lead Screw Bearing Mounts (15PCS) ## Features - Bearing Pillow Block have a certain bearing capacity, can hold in ordinary precision rack, strong adaptability. - Lead Screw are widely used for machine tools, like 3D printing. - Shaft Optical Axis suitable for kinds of electronic equipment/guide bar, drive shaft, pillar. - This set includes Optical Axis & Lead Screw, Pillow Block Bearing, Linear Rail Support, CNC Stepper Coupler and Ball Bearing. ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | Mergorun | | Part Number | D0009 | | Item Weight | 2.14 pounds | | Package Dimensions | 23 x 3 x 1 inches | | Item model number | D0009 | | Is Discontinued By Manufacturer | No | | Material | Stainless Steel | | Item Package Quantity | 1 | | Measurement System | Metric | | Batteries Included? | No | | Batteries Required? | No | ## Product Details - **Brand:** Mergorun - **Material:** Stainless Steel - **Item Weight:** 972 Grams - **Bearing Type:** Ball Bearing - **Manufacturer:** Mergorun ## Images ![500mm Horizontal Optical Axis & Flexible Shaft Coupling & 8mm Lead Screw Dual Rail Shaft Support Pillow Block Bearings pack of 15 - Image 1](https://m.media-amazon.com/images/I/610qDQ7iHiL.jpg) ![500mm Horizontal Optical Axis & Flexible Shaft Coupling & 8mm Lead Screw Dual Rail Shaft Support Pillow Block Bearings pack of 15 - Image 2](https://m.media-amazon.com/images/I/612-9kTJNnL.jpg) ![500mm Horizontal Optical Axis & Flexible Shaft Coupling & 8mm Lead Screw Dual Rail Shaft Support Pillow Block Bearings pack of 15 - Image 3](https://m.media-amazon.com/images/I/51IF2j2VWWL.jpg) ![500mm Horizontal Optical Axis & Flexible Shaft Coupling & 8mm Lead Screw Dual Rail Shaft Support Pillow Block Bearings pack of 15 - Image 4](https://m.media-amazon.com/images/I/610RLhAndXL.jpg) ![500mm Horizontal Optical Axis & Flexible Shaft Coupling & 8mm Lead Screw Dual Rail Shaft Support Pillow Block Bearings pack of 15 - Image 5](https://m.media-amazon.com/images/I/61Vto81hdwL.jpg) ## Customer Reviews ### ⭐ 1.0 out of 5 stars DO NOT PURCHASE: linear rails came bent from factory *by B***N on Reviewed in the United States on September 12, 2020* I purchased this linear rail set for my cnc router, however it was a mistake. Sadly I don’t have any pictures of the rails on my phone currently but trust me when I say that they are poor quality. Fresh out of the package the linear rails where bent and the rod mounts didn’t have fully drilled holes in them. It was like someone just gave up at the factory and sent them out even though they were not completed. In addition, the rod mounts have inconsistent hole spacing which caused me drill them out myself. My overall recommendation is to steer clear of this product and to purchase from a more reputable company. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars perfect for cnc *by H***B on Reviewed in the United States on May 4, 2021* works great ### ⭐⭐ 2.0 out of 5 stars Not Worth *by A***R on Reviewed in the United States on February 27, 2020* The machining quality is lacking but considering the price not bad. Two of the sliders catch and aren’t smooth no matter the amount of lube I add. So overall, not worth. --- ## 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.tw/products/67824648-500mm-horizontal-optical-axis-and-flexible-shaft-coupling-and-8mm](https://www.desertcart.tw/products/67824648-500mm-horizontal-optical-axis-and-flexible-shaft-coupling-and-8mm) --- *Product available on Desertcart Taiwan* *Store origin: TW* *Last updated: 2026-10-26*