--- product_id: 93896169 title: "40T Brass Gear Wheel & 5mm Hole Diameter Gear Shaft Kits 0.5 Modulus Set 1:40 Reduction Ratio Drive Gear Box" price: "827416₫" currency: VND in_stock: true reviews_count: 12 url: https://www.desertcart.vn/products/93896169-40t-brass-gear-wheel-and-5mm-hole-diameter-gear-shaft store_origin: VN region: Vietnam --- # 0.5 Modulus 5mm Hole 40T Gear 40T Brass Gear Wheel & 5mm Hole Diameter Gear Shaft Kits 0.5 Modulus Set 1:40 Reduction Ratio Drive Gear Box **Price:** 827416₫ **Availability:** ✅ In Stock ## Summary > Gear Up for Greatness! ⚡️ ## Quick Answers - **What is this?** 40T Brass Gear Wheel & 5mm Hole Diameter Gear Shaft Kits 0.5 Modulus Set 1:40 Reduction Ratio Drive Gear Box - **How much does it cost?** 827416₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/93896169-40t-brass-gear-wheel-and-5mm-hole-diameter-gear-shaft) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Quality Assurance:** Carefully processed for superior reliability. - • **Compact & Lightweight:** Perfect for tight spaces without sacrificing power. - • **Versatile Applications:** Ideal for various mechanical projects and prototypes. - • **High Transmission Ratio:** Achieve up to 80:1 for maximum efficiency. - • **Durable Brass Construction:** Built to last, ensuring long-term performance. ## Overview The CNBTR 40T Brass Gear Wheel & 5mm Hole Diameter Gear Shaft Kits offer a robust solution for power transmission with a 0.5 modulus and a remarkable 1:40 reduction ratio. Crafted from high-quality brass, this compact and lightweight set is designed for durability and efficiency, making it perfect for a variety of mechanical applications. ## Description Product description Specifications Material: Brass Modulus:0.5 Reduction Ratio: 1:40 Brand name: CNBTR Weight: 28g Worm Gear Wheel Teeth:40 Teeth Dia: 21.2MM Height: 12MM/0.47 Inch Outer Diameter: 21MM/0.82 Inch Hole Diameter: 5MM/0.2 Inch Step Size: 15x7MM/0.59x0.27 Inch (Dia x H) Overall Size: 12x21x5MM/0.47x0.82x0.2Inch(H x OD x ID) Worm Gear Shaft Height: 20MM/0.79 Inch Outer Diameter: 9.7MM/0.38 Inch Inner Diameter: 5MM/0.2 Inch Size: 20x9.7x5MM/0.79x0.38x0.2 Inch(H x OD x ID) CNBTR 40T Brass Worm Gear Wheel & 5mm Hole Diameter Worm Gear Shaft Kits 0.5 Modulus Set 1:40 Reduction Ratio The transmission structure of worm shaft is simple, compact, small volume and light weight. Made of brass, long time service. High quality material selection, carefully processing create high quality product. Package Content 1 x Brass Worm Gear Shaft 1 x Brass Worm Gear Wheel 2 x Screws Review: Excellent - Excellently machined worm pair. Exact to the specified dimensions. Review: Good matched gear set - The gear set curves helped to self-center. A little grease and friction isn't an issue because they set match very well. Precision, quality, hole center all good enough for my maker space. ## Features - Set include one 0.5 modulus 5MM Hole Dia brass gear shaft and one 40 T brass gear wheel. - The transmission structure of shaft is simple, compact, small volume and light weight. - Shaft Z1=1, turn a round of gear T, can get a large transmission ratio, generally in the power transmission, the transmission ratio I=10-80, like big transmission ratio, if use with gear transmission, will need to take the multi-stage transmission. - High quality material selection, carefully processing create high quality product. - Made of brass, long time service. - If the product you receive does not match the size or quantity, please feel free to contact us and we will be happy to solve the problem for you. ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 4.4 out of 5 stars 75 Reviews | ## Images ![40T Brass Gear Wheel & 5mm Hole Diameter Gear Shaft Kits 0.5 Modulus Set 1:40 Reduction Ratio Drive Gear Box - Image 1](https://m.media-amazon.com/images/I/71P0hkWDqpL.jpg) ![40T Brass Gear Wheel & 5mm Hole Diameter Gear Shaft Kits 0.5 Modulus Set 1:40 Reduction Ratio Drive Gear Box - Image 2](https://m.media-amazon.com/images/I/71bYR7jaA0L.jpg) ![40T Brass Gear Wheel & 5mm Hole Diameter Gear Shaft Kits 0.5 Modulus Set 1:40 Reduction Ratio Drive Gear Box - Image 3](https://m.media-amazon.com/images/I/71ovCTWiJaL.jpg) ![40T Brass Gear Wheel & 5mm Hole Diameter Gear Shaft Kits 0.5 Modulus Set 1:40 Reduction Ratio Drive Gear Box - Image 4](https://m.media-amazon.com/images/I/71uLZ2yr3vL.jpg) ![40T Brass Gear Wheel & 5mm Hole Diameter Gear Shaft Kits 0.5 Modulus Set 1:40 Reduction Ratio Drive Gear Box - Image 5](https://m.media-amazon.com/images/I/71EUDgpmdZL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent *by P***N on September 13, 2025* Excellently machined worm pair. Exact to the specified dimensions. ### ⭐⭐⭐⭐⭐ Good matched gear set *by A***R on July 12, 2021* The gear set curves helped to self-center. A little grease and friction isn't an issue because they set match very well. Precision, quality, hole center all good enough for my maker space. ### ⭐⭐⭐⭐⭐ Good quality! *by K***L on September 27, 2019* Surprisingly high quality - holes were a perfect fit on the appropriate shafts and the material is well-suited for low-torque applications. Shipped extremely fast. ## Frequently Bought Together - CNBTR 40T Brass Gear Wheel & 5mm Hole Diameter Gear Shaft Kits 0.5 Modulus Set 1:40 Reduction Ratio Drive Gear Box - uxcell 6mm x 250mm 304 Stainless Steel Solid Round Rod for DIY Craft - 5pcs - WINSINN GT2 Idler Pulley - 20 Toothless, 5mm Bore, for 10mm Width Timing Belt, Aluminum - Ideal for 3D Printers, CNC Machines (5-Pack) --- ## 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.vn/products/93896169-40t-brass-gear-wheel-and-5mm-hole-diameter-gear-shaft](https://www.desertcart.vn/products/93896169-40t-brass-gear-wheel-and-5mm-hole-diameter-gear-shaft) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-06-06*