--- product_id: 15385014 title: "47:1 Planetary Gearbox Nema 23 Stepper Motor 2.8A for DIY CNC Mill Lathe Router" brand: "stepperonline" price: "HK$1226" currency: HKD in_stock: true category: "Stepperonline" url: https://www.desertcart.hk/products/15385014-47-1-planetary-gearbox-nema-23-stepper-motor-2-8a store_origin: HK region: Hong Kong --- # 40Nm holding torque 0.039° ultra-fine step angle 47:1 planetary gear ratio 47:1 Planetary Gearbox Nema 23 Stepper Motor 2.8A for DIY CNC Mill Lathe Router **Brand:** stepperonline **Price:** HK$1226 **Availability:** ✅ In Stock ## Summary > ⚙️ Dominate your DIY CNC game with precision and power! ## Quick Answers - **What is this?** 47:1 Planetary Gearbox Nema 23 Stepper Motor 2.8A for DIY CNC Mill Lathe Router by stepperonline - **How much does it cost?** HK$1226 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/15385014-47-1-planetary-gearbox-nema-23-stepper-motor-2-8a) ## Best For - stepperonline enthusiasts ## Why This Product - Trusted stepperonline brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Gearbox Mastery:** 47:1 planetary gearbox delivers smooth, low-speed rotation with minimal backlash (≤1.5°). - • **Compact Powerhouse:** 60x60mm frame with a sleek 56mm motor length fits perfectly in tight DIY setups. - • **Precision at its Peak:** Achieve micro-step accuracy with a 0.039° step angle for flawless CNC control. - • **Ready for the Pro Circuit:** Designed for bipolar stepper drivers with 2.8A rated current—engineered for reliability and longevity. - • **Torque That Moves Mountains:** 40Nm holding torque powers through the toughest milling, lathe, and routing tasks. ## Overview The STEPPERONLINE NEMA 23 Stepper Motor with integrated 47:1 planetary gearbox offers ultra-fine 0.039° step resolution and a robust 40Nm holding torque. Compact yet powerful, it’s engineered for demanding CNC milling, lathe, and routing applications requiring precise low-speed control and high torque. With a durable 60x60mm frame and 2.8A bipolar drive compatibility, this motor is a must-have for serious DIY professionals aiming to elevate their machining projects. ## Description This high precision NEMA 23 Stepper motor has an integrated Planetary gearbox with a 46.656:1 gear ratio, the resolution reach 0.039° step angle. It's a good solution in applications that need very low rotation speeds and/or lots of torque. Electrical Specification * Manufacturer Part Number: 23HS22-2804S-PG47 * Motor Type: Bipolar Stepper * Step Angle: 0.039° * Holding Torque: 40Nm * Rated Current/phase: 2.8A * Phase Resistance: 0.9ohms * Recommended Voltage: 24-48V * Inductance : 2.5mH±20%(1KHz) Gearbox Specifications * Gearbox Type: Planetary * Gear Ratio : 46.656:1 * Efficiency: 73% * Backlash at No-load :<=1.5° * Max.Permissible Torque: 40Nm(2832oz-in) * Moment Permissible Torque: 60Nm(4248oz-in) * Shaft Maximum Axial Load: 100N * Shaft Maximum Radial Load : 200N Physical Specifications * Frame Size: 60 x 60mm * Motor Length: 56mm * Gearbox Length: 72mm * Shaft Diameter: Φ12mm * Shaft Length: 30mm * Key-way length: 20mm * Key-way width : 4mm * Number of Leads: 4 * Lead Length: 500mm * Weight : 1.7kg Connection: Black(A+), Green(A-), Red(B+), Blue(B-) Warning: Make sure the motor connect to a constant current or chopper drive controller before you test motor. Connecting the motor directly to a power supply will destroy the motor. ## Features - Bipolar Stepper, Holding Torque: 40Nm ,Rated Current/phase : 2.8A - Gearbox Type: Planetary - Frame Size: 60 x 60mm / 2.36x 2.36" , Motor Length: 56mm / 2.20" ,Gearbox Length :72mm / 2.83" - 4-wires (Black, Green, Blue, Red) , Weight: 1.7kg ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00WAV322U | | Best Sellers Rank | #359,766 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #287 in Electrical Motor Controls #646 in Edge Treatment & Grooving Router Bits | | Brand Name | STEPPERONLINE | | Customer Reviews | 4.7 4.7 out of 5 stars (13) | | Item Weight | 1.7 kg | | Manufacturer | OSM Technology Co.,Ltd. | | Material Type | lead | | Model | 23HS22-2804S-PG47 | | Model Name | gear | | Part Number | 23HS22-2804S-PG47 | | Shaft Diameter | 12 millimeters | | Speed | 2800 rpm | | UPC | 701056591893 | | Voltage | 48 volts | ## Product Details - **Brand:** STEPPERONLINE - **Material:** lead - **Model Name:** gear - **Speed:** 2800 rpm - **Voltage:** 48 volts ## Images ![47:1 Planetary Gearbox Nema 23 Stepper Motor 2.8A for DIY CNC Mill Lathe Router - Image 1](https://m.media-amazon.com/images/I/61l4blBF00L.jpg) ## Questions & Answers **Q: What is the maximum speed output of the gearbox?** A: The maximum speed output is about 25RPM. **Q: Is there a torque curve available for this motor?** A: Stepper motors definitely have torque curves. They are not constant torque. Planetary drives do not lock movement, they can be backdriven. Most likely the best torque performance will be had from this motor between 0 to 300 RPM. Other 2.8A motors I have (with published torque curves) produce about 100 oz. in. at 600 RPM. **Q: What types of voltage supplies would you apply to this motor? For example, a car battery.** A: 24Vdc is what i would recommend to keep the current down. ## Frequently Bought Together - STEPPERONLINE 47:1 Planetary Gearbox Nema 23 Stepper Motor 2.8A for DIY CNC Mill Lathe Router - STEPPERONLINE NEMA 23 Stepper Motor (Economy Geared Stepper Motor) Alloy Steel Mounting Bracket ST-M2 --- ## 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.hk/products/15385014-47-1-planetary-gearbox-nema-23-stepper-motor-2-8a](https://www.desertcart.hk/products/15385014-47-1-planetary-gearbox-nema-23-stepper-motor-2-8a) --- *Product available on Desertcart Hong Kong* *Store origin: HK* *Last updated: 2026-08-21*