--- product_id: 21893184 title: "5PCS U-Groove Pulley Roller Wheels with Deep Groove Ball Bearings, 8x30x10mm Silent Nylon Guide Track Rollers for Sliding Doors, Windows, and Gym Cable Systems, Heavy Duty & Smooth Motion" brand: "preamer" price: "$22.13" currency: USD in_stock: true reviews_count: 13 category: "Preamer" url: https://www.desertcart.us/products/21893184-5pcs-u-groove-pulley-roller-wheels-with-deep-groove-ball store_origin: US region: United States of America --- # 608ZZ deep groove ball bearing PA66 nylon durable sheave 200 lbs max load capacity 5PCS U-Groove Pulley Roller Wheels with Deep Groove Ball Bearings, 8x30x10mm Silent Nylon Guide Track Rollers for Sliding Doors, Windows, and Gym Cable Systems, Heavy Duty & Smooth Motion **Brand:** preamer **Price:** $22.13 **Availability:** βœ… In Stock ## Summary > πŸ› οΈ Elevate your projects with silent strength and lasting durability! ## Quick Answers - **What is this?** 5PCS U-Groove Pulley Roller Wheels with Deep Groove Ball Bearings, 8x30x10mm Silent Nylon Guide Track Rollers for Sliding Doors, Windows, and Gym Cable Systems, Heavy Duty & Smooth Motion by preamer - **How much does it cost?** $22.13 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/21893184-5pcs-u-groove-pulley-roller-wheels-with-deep-groove-ball) ## Best For - preamer enthusiasts ## Why This Product - Trusted preamer brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Maintenance Made Easy:** Removable shields allow quick cleaning and relubrication, keeping your system running flawlessly without downtime. - β€’ **Heavy-Duty Nylon Sheaves:** Crafted from robust PA66 plastic, these rollers resist wear and rust, built to last through intense daily use. - β€’ **Impressive Load Capacity:** Supports up to 200 lbs, perfect for demanding applications from gym systems to sliding doors. - β€’ **Precision Engineered Bearings:** 608ZZ deep groove ball bearings ensure ultra-smooth, whisper-quiet operation for professional-grade performance. - β€’ **Versatile Industrial & Home Use:** Ideal for sliding doors, gym lifting systems, DIY projects, and even marine pulley repairsβ€”adaptable to your lifestyle. ## Overview This 5-piece set of 8x30x10mm nylon U groove pulley rollers features high-precision 608ZZ deep groove ball bearings encased in durable PA66 plastic sheaves. Designed to support loads up to 200 lbs, these rollers deliver smooth, quiet operation ideal for sliding doors, gym cable systems, and various industrial or DIY applications. With corrosion-resistant materials and easy maintenance, they combine longevity with versatile performance backed by a 3-year warranty. ## Description Product description Great for DIY 5pcs U type groove pulley nylon Guide Pulley Rolling Bearing U Groove Roller Wheel 8x30x10mm for Driving Mechanical Equipment, or Used in Doors and Windows Material:Engineering plastics and Bearing Steel Color:Orange Inside Diameter: 8MM Outside diameter: 30MM Thickness: 10MM Size:8 x 30 x 10mm/0.3 x 1.2 x 0.4Inch(ID x OD x T) Load: 79KG Deep U groove ball bearings, fashionable, slide flexible, compression wear. These good precision bearings provide high speed and the convenience of removal shields for cleaning and relubrication. With less coefficient of friction, less vibration and noise. Rolling bearings use rolling elements to maintain the separation between moving parts to reduce rotational friction and support radial and axial loads. Review: They were priced perfectly and worked great! - We used these to build a Roman Curtain style rig for raising/lowering a projection screen in a recent Community Theatre production. I used them to replace the noisy metal wheel that was in the pulleys we purchased at Home Depot. They were priced perfectly and worked great! Review: Fix Your Mast Pulleys... - Used this to fix pulleys on a sail boat mast, they worked great! Quality seems good... ## Features - Durable : This pulley bearing is made of bearing steel and PA66 plastic , double shielde bearing inside for good anti-rust effect and wear-resistant.Durable and sturdy, with a long service life. - Heavy Duty:Bearing steel deep groove ball bearings 608ZZ bearing inside and sturdy nylon sheaves ,Can withstand heavy weight and frequent use.Max-Loading:200Lbs - Silent bearings:This pulley wheel is made with high-quality bearings,Smooth operation,very quiet.Suitable for household and industrial use - Widely used :This Nylon Roller bearing is Suitable for furniture hardware accessories, glass sliding doors, aluminum doors and window .can be used for home fitness and garage door pulley systems, gym cable pulley systems,DIY home projects, fitness equipment, clotheslines, hoists, lifting blocks, ladder lifts, store lifts, etc - Product Size: 8mm/0.3"(ID)*30mm/1.2"(OD)*10mm/0.4"(Thickness),U groove Size: 6mm/(Width)*3mm(Depth).5 pcs.(3 Years Warranty) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B014884ZYG | | Bearing Number | 608ZZ | | Bearing Type | Ball Bearing | | Best Sellers Rank | #189,297 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,256 in Deep-Groove Ball Bearings | | Brand | Preamer | | Brand Name | Preamer | | Compatible Lubricant | Grease | | Customer Reviews | 4.4 out of 5 stars 153 Reviews | | Item Dimensions | 1.18 x 1.18 x 0.39 inches | | Item Thickness | 10 Millimeters | | Item Weight | 0.07 Pounds | | Item dimensions L x W x H | 1.18 x 1.18 x 0.39 inches | | Manufacturer | Preamer | | Material | POM, Steel | | Material Type | POM,Steel | | Model | HU-0830-10 | | Outside Diameter | 30 Millimeters | | Part Number | 8186738 | | Specification Met | ABEC 1 | | UPC | 711301729988 740690520654 | | Unit Count | 5.0 Count | ## Product Details - **Brand:** Preamer - **Material:** Aluminum,Material,Plastic,Steel - **Item dimensions L x W x H:** 1.18 x 1.18 x 0.39 inches - **Bore Diameter:** 8 Millimeters - **Item Weight:** 0.07 Pounds ## Images ![5PCS U-Groove Pulley Roller Wheels with Deep Groove Ball Bearings, 8x30x10mm Silent Nylon Guide Track Rollers for Sliding Doors, Windows, and Gym Cable Systems, Heavy Duty & Smooth Motion - Image 1](https://m.media-amazon.com/images/I/61qqO-i60-L.jpg) ## Questions & Answers **Q: What size is the bolt hole?** A: 5/16” threaded bolt with a lock washer has worked very well for me. **Q: What size is the bolt hole?** A: It's a 608 bearing, so the inner diameter is 8mm. http://www.gizmology.net/bearings.htm (It mounts on an M4 bolt) **Q: I would like to know the weight that these pulleys support** A: I don't know. I used them for my son's robotics team **Q: Is there a load capacity on these if you are using them as a pulley?** A: There probably is, the Plastic outer would be the limiting factor as excessive weight would make the cable or rope cut into the plastic. ## Customer Reviews ### ⭐⭐⭐⭐⭐ They were priced perfectly and worked great! *by S***T on November 10, 2017* We used these to build a Roman Curtain style rig for raising/lowering a projection screen in a recent Community Theatre production. I used them to replace the noisy metal wheel that was in the pulleys we purchased at Home Depot. They were priced perfectly and worked great! ### ⭐⭐⭐⭐⭐ Fix Your Mast Pulleys... *by K***N on October 15, 2017* Used this to fix pulleys on a sail boat mast, they worked great! Quality seems good... ### ⭐⭐⭐⭐⭐ πŸ‘πŸ½ *by G***N on January 13, 2020* The part are great but I ordered the wrong size ## Frequently Bought Together - Preamer 5PCS 8x30x10mm Nylon Round Plasic Pulley U Groove Track Roller Bearing Pulleys Wheel Roller for Sliding Door Window Lifting Systems, Double Shielde 608zz Bearing Inside - Prime-Line D 1798 1-1/4 In. Nylon Ball Bearing, Sliding Door Roller Set (2 Pack) - uxcell 4pcs U Type Groove Pulley Nylon Guide Rolling Bearing 5x25.5x8.5mm U Groove Roller Wheel for Door Window, Blue --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/21893184-5pcs-u-groove-pulley-roller-wheels-with-deep-groove-ball](https://www.desertcart.us/products/21893184-5pcs-u-groove-pulley-roller-wheels-with-deep-groove-ball) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-29*