--- product_id: 104396884 title: "4PCS U Type Groove Plastic Guide Bearing Pulley Wheel 34mm Outer Diameter 8mm Shaft Hole for Max-Load 79kg, Sliding Door Window Roller, Office Equipment Roller" brand: "cnbtr" price: "¥3729" currency: JPY in_stock: true category: "Cnbtr" url: https://www.desertcart.jp/products/104396884-4pcs-u-type-groove-plastic-guide-bearing-pulley-wheel-34mm store_origin: JP region: Japan --- # 8mm Shaft Hole fit 34mm Outer Diameter precision 79kg Max Load-bearing strength 4PCS U Type Groove Plastic Guide Bearing Pulley Wheel 34mm Outer Diameter 8mm Shaft Hole for Max-Load 79kg, Sliding Door Window Roller, Office Equipment Roller **Brand:** cnbtr **Price:** ¥3729 **Availability:** ✅ In Stock ## Summary > ⚙️ Roll Smooth, Load Strong – Upgrade Your Glide Game! ## Quick Answers - **What is this?** 4PCS U Type Groove Plastic Guide Bearing Pulley Wheel 34mm Outer Diameter 8mm Shaft Hole for Max-Load 79kg, Sliding Door Window Roller, Office Equipment Roller by cnbtr - **How much does it cost?** ¥3729 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/104396884-4pcs-u-type-groove-plastic-guide-bearing-pulley-wheel-34mm) ## Best For - cnbtr enthusiasts ## Why This Product - Trusted cnbtr brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **U-Type Groove Design:** Ensures stable alignment and reduces friction for whisper-quiet operation. - • **Versatile Compatibility:** Ideal replacement for sliding windows, doors, printers, and more—upgrade your gear now. - • **Heavy-Duty 79kg Load Capacity:** Supports robust applications from sliding doors to office equipment effortlessly. - • **Durable Bearing Steel Construction:** Resists wear and tear for long-lasting, maintenance-free use. - • **Precision Engineered 34mm Diameter:** Fits seamlessly for smooth sliding and rolling performance. ## Overview This 4-piece set of U Type Groove Plastic Guide Bearing Pulley Wheels features a 34mm outer diameter and an 8mm shaft hole, crafted from durable bearing steel and engineering plastics. Designed to handle up to 79kg, these pulleys provide reliable, low-friction rolling for sliding doors, windows, and office equipment. ISO 9001 certified and backed by CNBTR quality assurance, they’re the perfect upgrade for professionals seeking durability and precision in everyday mechanical components. ## Description Specifications: Bearing Model: 608ZZ Material: Engineering plastics, bearing steel Brand: CNBTR Color: White Inner diameter: 8mm Outside diameter: 34mm Thickness: 10.5mm Groove width: 6.4mm Groove Depth: 4.5mm Radius: R=3.2mm Weight: 64g Bearing Weight: 79KG Features: 1.[Product Size 1] Overall Size: Outside Diameter 34mm/1.34inch, Height 10.5mm/0.41inch. Please confirm the correct size before purchasing. 2.[Product Size 2] U Type Groove: Width 6.4mm/0.25inch, Depth 4.5mm/0.177inch. Shaft Hole Diameter: 8mm/0.31inch. 3.[Material] Made of bearing steel material, not easy to wear, and lasting performance. It's a great substitute for your product. 4.[Application] Max Load-bearing: 79kg/174lbs. Suitable for the replacement and installation of pulley such as sliding window, door, printer machine, etc. 5.If you have any question about the product, feel free to contact the CNBTR Service and we will try our best to give you a satisfactory answer. Package Content: 4 x bearing guide pulley The unique MPN label on each inner package, which confirm it passed the quality inspection and it is genuine item sold from our shop. Please offer it to us when you need assistance. ## Features - [Material] Made of bearing steel material, not easy to wear, and lasting performance. It's a great substitute for your product.Rolling bearings use rolling elements to keep the separation between moving parts to reduce rotational friction. - [Size] Overall Size: Outside Diameter 34mm/1.34inch, Height 10.5mm/0.41inch. Please confirm the correct size before purchasing. - [Product Size 2] U Type Groove: Width 6.4mm/0.25inch, Depth 4.5mm/0.177inch. Shaft Hole Diameter: 8mm/0.31inch. - [Application] Max Load-bearing: 79kg/174lbs. Suitable for the replacement and installation of pulley such as sliding window, door, printer machine, etc. - If you have any question about the product, feel free to contact the CNBTR Service and we will try our best to give you a satisfactory answer. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07D8PZ34Q | | Bearing Number | 608ZZ | | Bearing Type | Ball Bearing | | Best Sellers Rank | #116,337 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #636 in Deep-Groove Ball Bearings | | Brand Name | CNBTR | | Compatible Lubricant | Oil or Grease | | Customer Reviews | 4.4 4.4 out of 5 stars (291) | | Item Dimensions | 1.34 x 1.34 x 0.41 inches | | Item Thickness | 10.5 Millimeters | | Item Weight | 0.06 Kilograms | | Manufacturer | yqltd | | Material Type | POM+Steel | | Model | M6180521110 | | Outside Diameter | 34 Millimeters | | Part Number | M6180521110 | | Specification Met | ISO 9001 | | Unit Count | 4.0 Count | ## Product Details - **Bearing Number:** 608ZZ - **Brand:** CNBTR - **Item Weight:** 0.06 Kilograms - **Item dimensions L x W x H:** 1.34 x 1.34 x 0.41 inches - **Material:** POM+Steel ## Images ![4PCS U Type Groove Plastic Guide Bearing Pulley Wheel 34mm Outer Diameter 8mm Shaft Hole for Max-Load 79kg, Sliding Door Window Roller, Office Equipment Roller - Image 1](https://m.media-amazon.com/images/I/719xdRnsgXL.jpg) ## Available Options This product comes in different **Color, Size** options. --- ## 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.jp/products/104396884-4pcs-u-type-groove-plastic-guide-bearing-pulley-wheel-34mm](https://www.desertcart.jp/products/104396884-4pcs-u-type-groove-plastic-guide-bearing-pulley-wheel-34mm) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-07-21*