--- product_id: 332344521 title: "3Dman GT2 16Toothless Bore 3mm 20Toothless Bore 5mm Aluminum Timing Belt Idler Pulley/Double Head for 3D Printer 6mm Width Timing Belt 20 Toothless Bore 5mm 20-05-0514-10" brand: "3dman" price: "¥5990" currency: JPY in_stock: true category: "3 Dman" url: https://www.desertcart.jp/products/332344521-3dman-gt2-16toothless-bore-3mm-20toothless-bore-5mm-aluminum-timing store_origin: JP region: Japan --- # 5mm precision bore for perfect fit 20 toothless design for smooth belt glide Lightweight 3g aluminum build 3Dman GT2 16Toothless Bore 3mm 20Toothless Bore 5mm Aluminum Timing Belt Idler Pulley/Double Head for 3D Printer 6mm Width Timing Belt 20 Toothless Bore 5mm 20-05-0514-10 **Brand:** 3dman **Price:** ¥5990 **Availability:** ✅ In Stock ## Summary > ⚙️ Elevate your 3D printing game with precision and durability! ## Quick Answers - **What is this?** 3Dman GT2 16Toothless Bore 3mm 20Toothless Bore 5mm Aluminum Timing Belt Idler Pulley/Double Head for 3D Printer 6mm Width Timing Belt 20 Toothless Bore 5mm 20-05-0514-10 by 3dman - **How much does it cost?** ¥5990 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/332344521-3dman-gt2-16toothless-bore-3mm-20toothless-bore-5mm-aluminum-timing) ## Best For - 3dman enthusiasts ## Why This Product - Trusted 3dman brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Engineered Fit:** 5mm bore diameter guarantees flawless alignment with your GT2 6mm wide timing belt. - • **Seamless Belt Performance:** 20 toothless pulley ensures whisper-quiet, slip-free timing belt operation. - • **Durable Aluminum Construction:** Lightweight yet robust aluminum material resists wear and heat for long-lasting reliability. - • **Hassle-Free Quality Assurance:** Backed by responsive 24-hour support and a full replacement or refund guarantee for peace of mind. - • **Versatile Industrial Compatibility:** Ideal for CNC machines, milling, drilling, and 3D printers—engineered for professional-grade machinery. ## Overview The 3Dman GT2 20 toothless aluminum timing belt idler pulley features a 5mm bore and is designed for 6mm wide GT2 timing belts. Weighing just 3g, it offers smooth, silent belt movement and is compatible with various industrial machines including CNC and milling equipment. Crafted from durable aluminum, it ensures long-lasting performance backed by a customer-friendly replacement or refund policy. ## Description Specification: Toothless Number:20 Bore Diameter: 5mm Net Weight: 3g/pcs Material: Aluminum Package Included: GT2 20Toothless Timing Belt Pulley Bore 5mm * 10 Thanks for you to choose us, and we will not let you down. 3Dman are devoted to offer premium quality products to all cherished customers.If our environment- friendly parcel has any problem, just let us know, please feel free to contact us via email. We will respond to you within 24 hours. We will take full responsibility for the quality-related issue through REPLACEMENT or FULL REFUND. Meanwhile, we will keep following up until it is resolved. ## Features - Used for GT2 6mm Wide Timing Belt. - 20 Toothless timing belt idler pulley, bore 5mm. - Widely used in milling machine, gear shaper, drilling machine, CNC engine lathe, hobbing machine or other machinery transmission. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07RV2T54M | | ASIN | B07RV2T54M | | Batteries Included? | No | | Batteries Required? | No | | Color | 20 Toothless Bore 5mm | | Customer Reviews | 4.5 4.5 out of 5 stars (229) | | Customer reviews | 4.5 4.5 out of 5 stars (229) | | Date First Available | 11 June 2019 | | Date First Available | 11 June 2019 | | Item Weight | 40 g | | Manufacturer | 3Dman | | Manufacturer | 3Dman | | Manufacturer reference | 20-05-0514-10 | | Manufacturer reference | 20-05-0514-10 | | Material | Aluminum | | Measurement System | Metric | | Package Dimensions | 11.5 x 8.7 x 0.9 cm; 40 g | | Package Dimensions | 11.5 x 8.7 x 0.9 cm; 40 g | | Part number | 20-05-0514-10 | | Size | 20 Toothless Bore 5mm | ## Images ![3Dman GT2 16Toothless Bore 3mm 20Toothless Bore 5mm Aluminum Timing Belt Idler Pulley/Double Head for 3D Printer 6mm Width Timing Belt 20 Toothless Bore 5mm 20-05-0514-10 - Image 1](https://m.media-amazon.com/images/I/513l8BxCfQL.jpg) ## Questions & Answers **Q: What's the difference between the seventh and ninth choices in this listing?** A: The seventh is - 40 teeth/8mm bore, the ninth 60 teeth/8mm bore. The 60 teeth is bigger diameter than 40 teeth. **Q: What is the inside bore size of the idler pulley?** A: The drawing shows 5mm **Q: Can I use this for a Velec electric bike chain?** A: This is a Timing Belt Idler Pulley made from Aluminum. I did not use it on my project, but used pair of flanged ball bearings for the pulley I need. If your bike chain made from steel metal I wouldn't recommended to use as a pulley for it. Aluminum will be worn out very quick. **Q: What is the flange diameter on these?** A: Flange diameter is 0.704" Flange thickness is 0.039" Belt Hub diameter is 0.473" Belt Hub width is 0.255" ## Frequently Bought Together - 3Dman GT2 20 Toothless Bore 5mm Aluminum Timing Belt Idler Pulley for 6mm Width 3D Printers (10pcs) - WINSINN GT2 Timing Belt Pulley 20 Teeth, 5mm Bore, for 6mm Width Belt - Ideal for 3D Printers, CNC Machines, Robotics (5-Pack) - 3D Printing GT2 Timing Belt, Zeelo 10 Meters (32.8ft) GT2 Open Timing Belt 2mm Pitch 6mm Width Rubber Fiberglass Fit for RepRap Prusa Mendel Rostock CR-10 Ender 3 3D Printers - Black --- ## 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/332344521-3dman-gt2-16toothless-bore-3mm-20toothless-bore-5mm-aluminum-timing](https://www.desertcart.jp/products/332344521-3dman-gt2-16toothless-bore-3mm-20toothless-bore-5mm-aluminum-timing) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-20*