--- product_id: 134101803 title: "3Dman GT2 20 Toothless Bore 5mm Aluminum Idler Pulley for 6mm Width Timing Belt 3D Printers (10pcs)" brand: "3dman" price: "VT5854" currency: VUV in_stock: true reviews_count: 10 category: "3 Dman" url: https://www.desertcart.vu/products/134101803-3dman-gt2-20-toothless-bore-5mm-aluminum-idler-pulley-6mm store_origin: VU region: Vanuatu --- # 5mm precision bore for perfect fit 20 toothless design for smooth belt glide lightweight aluminum alloy, durable & corrosion-resistant 3Dman GT2 20 Toothless Bore 5mm Aluminum Idler Pulley for 6mm Width Timing Belt 3D Printers (10pcs) **Brand:** 3dman **Price:** VT5854 **Availability:** ✅ In Stock ## Summary > ⚙️ Elevate your 3D printing game with precision and durability! ## Quick Answers - **What is this?** 3Dman GT2 20 Toothless Bore 5mm Aluminum Idler Pulley for 6mm Width Timing Belt 3D Printers (10pcs) by 3dman - **How much does it cost?** VT5854 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/134101803-3dman-gt2-20-toothless-bore-5mm-aluminum-idler-pulley-6mm) ## 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 - • **Built to Last:** Crafted from premium aluminum alloy for lightweight strength and long-lasting corrosion resistance. - • **Bulk Pack Advantage:** 10-piece set keeps your projects running smoothly without frequent replacements. - • **Precision Fit Guaranteed:** 5mm bore diameter engineered for exact alignment with GT2 6mm belts—no slip, no fuss. - • **Seamless Belt Performance:** Toothless 20-tooth design ensures whisper-quiet, frictionless timing belt movement. - • **Versatile Industrial Compatibility:** Ideal for 3D printers, CNC machines, milling, drilling, and other mechanical transmissions. ## Overview The 3Dman GT2 20 Toothless Bore 5mm Aluminum Idler Pulley is a high-quality, lightweight aluminum component designed for GT2 6mm wide timing belts. Its 20 toothless design ensures smooth, quiet belt operation, while the precise 5mm bore guarantees a perfect fit. Widely compatible with 3D printers and various CNC and mechanical machines, this 10-piece set offers reliable performance and durability for professional-grade projects. ## Description Specification: Toothless Number:20 Bore Diameter: 5mm Net Weight: 3g/pcs Material: Aluminum Package Included: GT2 20Toothless Timing Belt Pulley Bore 5mm * 10 Review: Does the job - A couple of the bearing are a bit notchy, but that's not going to cause a problem for this application Review: Ok, but some with bad bearings. - I use these on 3d printersz and they're great for Gates GT2 6mm belts. A few of these came with dry, or rough bearings which was a pity. Otherwise they were decent quality, and the belt surface and aluminium outers were good. ## Features - Used for GT2 6mm Wide Timing Belt. - 20 Toothless timing belt idler pulley, bore 5mm. - Material:Aluminium alloy. - Widely used in 3D printer, CNC, milling machine, gear forming machine, drilling machine, CNC machine tool lathe, hobbing machine or other mechanical transmission occasions. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07RV2T54M | | Batteries Required? | No | | Batteries included? | No | | Best Sellers Rank | 46,728 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 24 in 3D Printer Timing Belts | | Colour | 20Toothless 5mm Bore | | Customer Reviews | 4.4 4.4 out of 5 stars (369) | | Date First Available | 14 May 2019 | | Item Weight | 40 g | | Manufacturer | 3Dman | | Manufacturer reference | 20-05-0514-10 | | Material | aluminum | | Measurement System | Metric | | 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 20 Toothless Bore 5mm Aluminum Idler Pulley for 6mm Width Timing Belt 3D Printers (10pcs) - Image 1](https://m.media-amazon.com/images/I/513l8BxCfQL.jpg) ## Available Options This product comes in different **Color** options. ## 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" ## Customer Reviews ### ⭐⭐⭐⭐ Does the job *by K***R on 8 November 2020* A couple of the bearing are a bit notchy, but that's not going to cause a problem for this application ### ⭐⭐⭐ Ok, but some with bad bearings. *by C***P on 15 July 2020* I use these on 3d printersz and they're great for Gates GT2 6mm belts. A few of these came with dry, or rough bearings which was a pity. Otherwise they were decent quality, and the belt surface and aluminium outers were good. ### ⭐⭐⭐ A few crunch bearings *by A***Y on 21 June 2020* 3 of them had crunchy bearings in them. The rest were OK. We shall see how long they last. ## 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.vu/products/134101803-3dman-gt2-20-toothless-bore-5mm-aluminum-idler-pulley-6mm](https://www.desertcart.vu/products/134101803-3dman-gt2-20-toothless-bore-5mm-aluminum-idler-pulley-6mm) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-05*