--- product_id: 370303473 title: "51:1 Precision Camera for Nema 17 High Torque Planetary Gearbox" brand: "stepperonline" price: "20266 som" currency: KGS in_stock: true reviews_count: 5 category: "Stepperonline" url: https://www.desertcart.kg/products/370303473-51-1-precision-camera-for-nema-17-high-torque-planetary store_origin: KG region: Kyrgyzstan --- # 4Nm high holding torque 0.035° ultra-fine step angle 51:1 planetary gearbox ratio 51:1 Precision Camera for Nema 17 High Torque Planetary Gearbox **Brand:** stepperonline **Price:** 20266 som **Availability:** ✅ In Stock ## Summary > ⚙️ Unlock precision power with every rotation — don’t let your projects settle for less! ## Quick Answers - **What is this?** 51:1 Precision Camera for Nema 17 High Torque Planetary Gearbox by stepperonline - **How much does it cost?** 20266 som with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/370303473-51-1-precision-camera-for-nema-17-high-torque-planetary) ## 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:** Built-in 51:1 planetary gearbox ensures exceptional torque multiplication with minimal backlash (≤1°). - • **Compact Yet Mighty:** NEMA 17 form factor with a solid 620g metal build balances size and strength for versatile integration. - • **Plug & Play Confidence:** Designed for bipolar 4-wire connection with rated current of 1.68A, optimized for constant current drivers. - • **Precision in Every Turn:** Experience ultra-smooth motion with an industry-leading 0.035° step angle for pinpoint accuracy. - • **Torque That Powers Innovation:** Delivering a robust 4Nm holding torque, perfect for demanding low-speed, high-torque applications. ## Overview The STEPPERONLINE 51:1 Precision Camera NEMA 17 Stepper Motor combines a high-torque 4Nm output with an ultra-fine 0.035° step angle, thanks to its integrated 50.9:1 planetary gearbox. Engineered for applications demanding low speed and high precision, this compact 620g motor features a bipolar 4-wire design optimized for constant current drivers, delivering reliable, backlash-minimized performance in a durable metal frame. ## Description This high precision NEMA 17 stepper motor has a built-in planetary gearbox with a speed ratio of 50.9:1, the resolution reaches 0.035 deg. step angle. It is a good solution in applications that require very low rotational speeds and/or a lot of torque. Electrical Specifications: * Manufacturer part number: 17HS19-1684S-PG51 * Motor type: bipolar stepper * Step angle: 0.035 deg. * Holding torque: 4Nm * Rated Current/Phase: 1.68A * Phase Resistance: 1.65ohms * Inductance: 2.8mH+/-20% (1KHz) Gearbox Features * Gearbox Type: Planetary * Gear Ratio: 50.9:1 * Efficiency: 73% * Backlash to No-load: <=1 deg. * Maximum permissible torque: 4Nm(6000g) * Allowable Torque: 6 Nm(950 oz) * Maximum shaft axial load: 50N * Maximum shaft radial load: 100N Physical characteristics: * Frame size: 42 x 42 mm * Motor length: 48 mm * Gearbox length: 42.7 mm * Shaft diameter: 8 mm * Shaft length: 20 mm * D Cut Length: 15mm * Number of tracks: 4 * Lead length: 500 mm * Weight: 620g Connection: Black(A+), Green(A-), Red(B+), Blue(B-) WARNING: Make sure the motor connects to a constant current drive controller or chopper before testing the motor. Connecting the motor directly to a power supply will destroy the motor. Review: This 50:1 (well, if you are going to be a detail person it's 51:1) gearboxed NEMA 17 works as advertised. My project needed more torque than speed, and this did the trick. Overall, I'm really quite pleased. That said, there are a couple of things about this unit. First, it is quite heavy, considerably more so than the motor alone. I was surprised (maybe I shouldn't have been, but I was.) Second, as another reader pointed out, mounting holes DO NOT follow standard NEMA 17 design. Look at the user guide/spec sheet prior to final design. I don't see points (1) or (2) as negatives. Third, the motor is hard wired rather than have a detachable harness. Minor negative. Fourth, there is a small amount of play/backlash, but the device was within spec. At this price, performance is more than satisfactory. Overall I am happy and would certainly buy again if I needed a gearboxed stepper. Review: Super Teil. Lediglich das leichte Spiel im Planetengetriebe. Welches aber in der Preisklasse zu erwarten ist. Steuer es mit Arduino und einem Stepper online Treiber. ## Features - High torque and low speed - 0.035 deg. Step Angle - NEMA 17 Bipolar 4 Wire - 50.9:1 Planetary Gearbox Ratio - Rated current 1.68A and resistance 1.65ohms ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00QEVLDVO | | ASIN | B00QEVLDVO | | Batteries Included? | No | | Batteries Required? | No | | Customer Reviews | 4.3 4.3 out of 5 stars (36) | | Customer reviews | 4.3 4.3 out of 5 stars (36) | | Cutting Diameter | 42 Millimeters | | Date First Available | 15 February 2015 | | Date First Available | 15 February 2015 | | Is Discontinued By Manufacturer | No | | Item Package Quantity | 1 | | Item Weight | 620 g | | Item diameter | 42 Millimeters | | Item model number | 17HS19-1684S-PG51 | | Item model number | 17HS19-1684S-PG51 | | Manufacturer | OSM Technology Co.,Ltd. | | Manufacturer | OSM Technology Co.,Ltd. | | Material | Metal | | Part number | 17HS19-1684S-PG51 | | Power source type | DC | | Product Dimensions | 4.2 x 4.2 x 4.8 cm; 620 g | | Shape | Square | | Size | Nema 17 | | Specific uses | DIY, Science and Industry, 3D Printer | | Speed | 4 RPM | | Voltage | 12 Volts | ## Product Details - **Brand:** STEPPERONLINE - **Model name:** gear - **Product dimensions:** 42W x 42H millimeters - **Speed:** 4 RPM - **Voltage:** 12 Volts ## Images ![51:1 Precision Camera for Nema 17 High Torque Planetary Gearbox - Image 1](https://m.media-amazon.com/images/I/61vD32svnBL.jpg) ## Questions & Answers **Q: Will powering this motor with a 12v 2A power supply cause damage? The motor is rated for 12v at 1.68A** A: No. The IV relation is fixed, meaning when you apply a certain voltage, a corresponding amount of current will flow. Due to the resistances of the windings, when you apply 12 V, only 1.68 A will flow by design. If you try to force 2A, then you will need a higher voltage. With that being said, it is better to use a stepper motor controller IC instead of driving the motor directly from the power supply. **Q: How noisy is this motor?** A: It has been a long time since I purchased this gear motor and put it service, but do not remember it as being at all noisy. **Q: How much torque is necessary to backdrive this gearbox? I am looking for a backdrivable gearbox.** A: Are you refering to the gearbox alone or the gearbox plus the motor? The gearbox will simply amplify the amount of torque: if it's a 1:100 gearbox, for backdriving, you need 100 times the torque compared to backdriving the stepper motor shaft directly. As for the actual torque in the presence of the motor, it varies depending on how much current is flowing through the motor. As a crude estimate, even without any current flowing, it is VERY difficult for an average adult male to backdrive the shaft of the gearbox. **Q: Is this kind of motor (with planetary gearbox) necessary for the construction of a syringe pump, or can i use just a nema 17 stepper motor?** A: I have used the nema 17 stepper motor for making a syringe pump with no gearbox using a leadscrew just fine for up to 25mL syringes. The leadscrew provides sufficient gearing itself. There is a good open source version on university of British Columbia. Possibly a larger syringe would necessitate a gearbox ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by E***E on 17 July 2020* This 50:1 (well, if you are going to be a detail person it's 51:1) gearboxed NEMA 17 works as advertised. My project needed more torque than speed, and this did the trick. Overall, I'm really quite pleased. That said, there are a couple of things about this unit. First, it is quite heavy, considerably more so than the motor alone. I was surprised (maybe I shouldn't have been, but I was.) Second, as another reader pointed out, mounting holes DO NOT follow standard NEMA 17 design. Look at the user guide/spec sheet prior to final design. I don't see points (1) or (2) as negatives. Third, the motor is hard wired rather than have a detachable harness. Minor negative. Fourth, there is a small amount of play/backlash, but the device was within spec. At this price, performance is more than satisfactory. Overall I am happy and would certainly buy again if I needed a gearboxed stepper. ### ⭐⭐⭐⭐ Review *by J***. on 23 February 2023* ### ⭐⭐⭐⭐⭐ Review *by T***M on 14 January 2021* Super Teil. Lediglich das leichte Spiel im Planetengetriebe. Welches aber in der Preisklasse zu erwarten ist. Steuer es mit Arduino und einem Stepper online Treiber. ## Frequently Bought Together - STEPPERONLINE 51:1 Planetary Gearbox High Torque Nema 17 Stepper Motor Precision Camera DIY - STEPPERONLINE NEMA 17 Stepper Motor (Economy Geared Stepper Motor) Alloy Steel Mounting Bracket ST-M1 - STEPPERONLINE 27:1 Planetary Gearbox High Torque Nema 17 Stepper Motor 3D Printer DIY Camera --- ## 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.kg/products/370303473-51-1-precision-camera-for-nema-17-high-torque-planetary](https://www.desertcart.kg/products/370303473-51-1-precision-camera-for-nema-17-high-torque-planetary) --- *Product available on Desertcart Kyrgyzstan* *Store origin: KG* *Last updated: 2026-04-25*