--- product_id: 38170495 title: "Pack of 4pcs 12 mm SC12UU SCS12UU Linear Ball Bearing Slider Slide Bushing Replacement CNC" brand: "glamorway" price: "FREE" currency: USD in_stock: false reviews_count: 8 category: "Tools" url: https://www.desertcart.us/products/38170495-pack-of-4pcs-12-mm-sc12uu-scs12uu-linear-ball-bearing store_origin: US region: United States of America --- # Pack of 4pcs 12 mm SC12UU SCS12UU Linear Ball Bearing Slider Slide Bushing Replacement CNC **Brand:** glamorway **Price:** FREE **Availability:** ❌ Out of Stock ## Quick Answers - **What is this?** Pack of 4pcs 12 mm SC12UU SCS12UU Linear Ball Bearing Slider Slide Bushing Replacement CNC by glamorway - **How much does it cost?** FREE with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/38170495-pack-of-4pcs-12-mm-sc12uu-scs12uu-linear-ball-bearing) ## Best For - glamorway enthusiasts ## Why This Product - Trusted glamorway brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Specification: Model: SC12UU Shaft ID:12mm Shaft OD:21mm Quantity: 4pcs Included: 4x SC12UU Ball Bearing Slide Bushings ## Features - ★IMPROVE EFFICIENCY AND SAVE ENERGY in your devices. - ★GREAT FOR YOU to replace the damaged Ball Bearings - ★SMOOTH MOVING,low friction,high rigidity and long life. - ★ECONOMICAL,easy to maintain replace. - ★WIDELY USED in home appliances,industrial,low noise and high speed electric motors,construction machinery, automotive components,pumps,and machinery. - ›See more product details ## Images ![Pack of 4pcs 12 mm SC12UU SCS12UU Linear Ball Bearing Slider Slide Bushing Replacement CNC - Image 1](https://m.media-amazon.com/images/I/41vbH7J4n8L.jpg) ![Pack of 4pcs 12 mm SC12UU SCS12UU Linear Ball Bearing Slider Slide Bushing Replacement CNC - Image 2](https://m.media-amazon.com/images/I/51soehe76-L.jpg) ![Pack of 4pcs 12 mm SC12UU SCS12UU Linear Ball Bearing Slider Slide Bushing Replacement CNC - Image 3](https://m.media-amazon.com/images/I/41wsCiS5f8L.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐ but just be aware that there is a lot of room for user error on a product like this. The tolerances on getting a sliding linear ... *by V***H on Reviewed in the United States on July 11, 2018* So, these work, and they are cheap, but just be aware that there is a lot of room for user error on a product like this. The tolerances on getting a sliding linear rail going through two of these are incredibly tight. A quarter of a turn too much on one screw and the system will lock up. You also really want to add some grease or lubricant to these and your shaft. They make a decent amount of noise when the shaft gets moving through them. Taking off a star because I had one bearing that two of the threads were wrong/mis-threaded on. ### ⭐ Look elsewhere. *by B***G on Reviewed in the United States on July 6, 2018* If all 4 worked as good a 1 of them does then this would be a 4-star purchase. As other have mentioned, not all of the mounting holes were milled properly - it is not that they were not tapped correctly, but rather some of the holes were milled to wide part of the way. Screws still secure them, but the couple of bad holes have less than half the threads. This alone should have been my signal to not buy them.3 of the 4 are junk. They are not smooth when not under a load, can be made to feel better if you press them towards the rod (force aligns the inner bearings), and will bind if you have a fast servo coupled with an equipment plate that is not supported equally across all the bearings. ### ⭐⭐⭐⭐⭐ Spec tolerances *by J***M on Reviewed in the United States on February 15, 2019* I used these in a 3-axis arduino CNC build. The most important center-line position and tolerance is accurate with the specs, however, there was no tolerances on any of the less critical dimensions. Following the 5mm bolt hole spacing in the spec sheet, I had no problem bolting these to the plates I machined for them. What I found is that most of the other dimensions of the product are +/- 1mm or perhaps more, so be sure to allow plenty of clarance. Check alignment of critical assembly with an indicator. --- ## 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/38170495-pack-of-4pcs-12-mm-sc12uu-scs12uu-linear-ball-bearing](https://www.desertcart.us/products/38170495-pack-of-4pcs-12-mm-sc12uu-scs12uu-linear-ball-bearing) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-13*