--- product_id: 44275381 title: "DC 12V 100RPM Gear Motor High Torque Electric Micro Speed Reduction Geared Motor Centric Output Shaft 37mm Diameter Gearbox" brand: "greartisan" price: "$36.67" currency: USD in_stock: true reviews_count: 13 category: "Greartisan" url: https://www.desertcart.us/products/44275381-dc-12v-100rpm-gear-motor-high-torque-electric-micro-speed store_origin: US region: United States of America --- # Bidirectional rotation with torque control Pure copper wire core boosts power +30% All-metal gears for max durability DC 12V 100RPM Gear Motor High Torque Electric Micro Speed Reduction Geared Motor Centric Output Shaft 37mm Diameter Gearbox **Brand:** greartisan **Price:** $36.67 **Availability:** ✅ In Stock ## Summary > ⚡ Gear up your innovation with power and precision! ## Quick Answers - **What is this?** DC 12V 100RPM Gear Motor High Torque Electric Micro Speed Reduction Geared Motor Centric Output Shaft 37mm Diameter Gearbox by greartisan - **How much does it cost?** $36.67 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/44275381-dc-12v-100rpm-gear-motor-high-torque-electric-micro-speed) ## Best For - greartisan enthusiasts ## Why This Product - Trusted greartisan brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Yet Mighty:** 37mm gearbox with a robust D-shaped steel output shaft offers impact resistance and extended service life in a sleek form factor. - • **Trusted Reliability:** Backed by a 100% unconditional return policy and proven performance in demanding setups like Arduino projects and industrial automation. - • **Unmatched Durability:** All-metal gears engineered for high abrasion and heat resistance, ensuring your projects run longer without a hitch. - • **Power-Boosted Efficiency:** Precision-wound pure copper rotor increases motor power by 30%, delivering reliable high torque at 12V. - • **Versatile Rotation Control:** Supports positive and negative rotation with adjustable speed reduction—perfect for precision applications. ## Overview The Greartisan DC 12V 100RPM Gear Motor features a rugged all-metal gear system and a pure copper wire core rotor that boosts power by 30%. Its compact 37mm gearbox with a hardened D-shaped output shaft delivers high torque (4.5Kg.cm) and low noise, supporting bidirectional rotation with speed reduction. Ideal for professional-grade automation, robotics, and hobbyist projects, it combines durability, efficiency, and precise control in one reliable package. ## Description Specifications: Rated Voltage: DC 12V Reduction Ratio: 1: 31.6 No-Load Speed: 100RPM Rated Torque: 4.5Kg.cm Rated Current: 1.1Amp D Shaped Output Shaft Size: 6*14mm (0.24" x 0.55") (D*L) Gearbox Size: 37 x 24.5mm (1.46" x 0.96") (D*L) Motor Size: 36.2 x 33.3mm (1.43" x 1.31") (D*L) Mounting Hole Size: M3 (not included) Application: Vending equipments, pan camera, slot machine, money detector, coin refund devices, automatic doors, peritoneal machine, toys motor etc. Packages: - 1 x DC Geared Motor PLEASE NOTE: 1.Use tolerance: Pay attention to the use of voltage and current range, otherwise the motor performance and motor life will decline. 2.Handling motors: Gently, as far as possible the use of motor shell part. 3.Motor wiring: Red lead to the positive electrode, black lead to the negative pole, if reversed, the motor rotation in the opposite direction. 4.Overload: As far as possible within the specified load range, prohibit motor blocking or close to the stall state for too long time to runs. Otherwise, the motor will burn out. 5.Motor storage: -- Storage temperature: 0℃ - 40℃; -- Storage humidity: 15% -90% RH; -- Avoid placing in high temperature, high humidity and corrosive gases. 6.Motor use temperature: 0℃ - 70℃ Review: Has been working reliably for a year, good torque, perfect for Arduino - I am using this for a Halloween prop where it hoists a spider (one of those 4 foot spiders you can buy at the Halloween stores) up to an overhanging branch on our front yard tree. The spider weighs about 13 oz and there is some friction in the system but the motor hoists the spider quite handily at about 0.5 m/s. It doesn't sound like it's struggling and stays cool. I'm controlling it through a Pololu motor driver and Arduino Nano and it seems to work fine with this setup. The motor makes a little noise but you can barely hear it out on the sidewalk. All in all very happy with this motor. Review: High Torque - Motor used to drive a Pastamatic re-spooler. Specifically selected the 100 RPM, 12V, motor given the higher torque specification. In fact the motor is able to re-spool without slowing down, nor does the motor get hot during operation even with back to back jobs. Overall the quality of the motor appears to be very good and the advertised specifications are real. I'm very happy with this purchase having come off of a different motor that simply was substandard not able to meet the specified torque. ## Features - 【ALL-METAL GEARS】: High-temperature resistance, high abrasion resistance, strong load capacity, sturdy and durable, effectively protect the gear box motor body. - 【PURE COPPER WIRE CORE ROTOR】: With precision winding technology, the geared motor power instant increased by 30%. - 【D SHAPED OUTPUT SHAFT】: Using high hardness steel, good toughness, impact resistance, the quality of the bearing and the service life of the gear motor are improved, extremely durable. - 【POSITIVE-NEGATIVE ROTATION】: You also can adjust the speed, but the motor speed can only be reduced, can not be raised. Low noise and high torque, such as 10rpm can drive 15 kilograms. - 【RELIABLE GURANTEE】: Any quality issues, we promise 100% unconditional return service. If you need other voltage and rpm, please feel free to contact us! ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B072R57C56 | | Best Sellers Rank | #8,648 in Toys & Games ( See Top 100 in Toys & Games ) #24 in Hobby Remote & App Controlled Vehicle Parts | | Brand | Greartisan | | Brand Name | Greartisan | | Customer Reviews | 4.5 out of 5 stars 271 Reviews | | Item Dimensions W x H | 1.46"W x 1.46"H | | Item Weight | 195 Grams | | Manufacturer | Greartisan | | Material | Metal | | Material Type | Metal | | Model | Greartisan | | Model Name | gear | | Part Number | Greartisan | | Product Dimensions | 1.46"W x 1.46"H | | Speed | 100 RPM | | UPC | 766330626869 | | Unit Count | 1.0 Count | | Voltage | 12 Volts | ## Product Details - **Brand:** Greartisan - **Model Name:** gear - **Product Dimensions:** 1.46"W x 1.46"H - **Speed:** 100 RPM - **Voltage:** 12 Volts ## Images ![DC 12V 100RPM Gear Motor High Torque Electric Micro Speed Reduction Geared Motor Centric Output Shaft 37mm Diameter Gearbox - Image 1](https://m.media-amazon.com/images/I/611r7E3K3zL.jpg) ![DC 12V 100RPM Gear Motor High Torque Electric Micro Speed Reduction Geared Motor Centric Output Shaft 37mm Diameter Gearbox - Image 2](https://m.media-amazon.com/images/I/71bmTFI2ebL.jpg) ![DC 12V 100RPM Gear Motor High Torque Electric Micro Speed Reduction Geared Motor Centric Output Shaft 37mm Diameter Gearbox - Image 3](https://m.media-amazon.com/images/I/61ubRus7FOL.jpg) ![DC 12V 100RPM Gear Motor High Torque Electric Micro Speed Reduction Geared Motor Centric Output Shaft 37mm Diameter Gearbox - Image 4](https://m.media-amazon.com/images/I/61cAWt7KS5L.jpg) ![DC 12V 100RPM Gear Motor High Torque Electric Micro Speed Reduction Geared Motor Centric Output Shaft 37mm Diameter Gearbox - Image 5](https://m.media-amazon.com/images/I/61qag3bDnNL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: So if I have an average rpm of 100 rpm and the rates torque is .45 kgcm, does that mean this has a power output of 4000 Watts?** A: I know this answer is coming to you 3 years too late - and you probably figured this all out. Just in case - here is how you can calculate the power from the torque and RPM. A couple of quick notes: Torque is force times length - kg is not a force but a mass. If the "torque" is given in kg*cm - then this is not a proper torque number. It should be in Newton*cm. Newton is the unit for force and kg for mass. The force a mass experiences here on earth is the mass multiplied by the earth's acceleration of the mass in the earth's gravity. This acceleration is 9.81 m/s/s (meters per seconds squared). This unit is the same as N/kg (not that readily visible - but for now we'll just accept that as correct). Now we can calculate the proper torque by multiplying the two numbers: 4.5kg*cm * 9.81 N/kg = 44.2 N*cm. Power is work done per time - work, energy and torque are identical units of measure - force times length - the continuously delivered torque is the same as the work done by the motor. However, for the power to be correct we have to express work in N*m (SI units) - not N*cm. So we have translate N*cm into N*m. 100 cm = 1 m or 1cm = 0.01 m. We can just simply replace the cm with 0.01m and well get the torque (work) in N*m - 4.42N* 0.01m = 0.442 N*m. Next: power is Nm/s in SI units - that means we have to express 100 rpm in rps (revolutions per second = rev/sec). 1 min = 60 seconds. 100 rpm = 100 revs per 60 secs = 100/60 rps = 1.7 rps. Now we can calculate the power in N*m/s: 0.442N*m * 1.7 rps = 0.74N * m / s = 0.74W of mechanical power - which is even less power. Of course that's only correct if the 4.5kgcm number is correct for the motor. Some of the suggestions were to use the electrical power of the motor to estimate the mechanical output power. That too is a legit approach - however, that power setting given must be under the same conditions for which the mechanical output was given. E.g. the motor must run at 100 rpm and deliver the torque given - only then the current draw by the motor and the voltage accross the motor can be used to calculate the approximate mechanical power. For example - if the motor draws 1A at 12V when stalled out (motor is slowed down to a stop), then this is not the same condition as running the motor at 100 rpm. Sometimes the specifications given for those products can be a bit questionable. **Q: Can this fit into a 1/4” metal rod? With a shaft collar or something?** A: If you are widening a coupler and you can, use a drill press or milling machine. Be sure the setup is as rigid as possible. Use a "reamer" 1/4" in diameter if you can get one. They are special purpose tooling but get used all the time for this exact job. They cost a few dollars. Use very low speed or even turn the chuck by hand. Do not use a hand dill at full speed with a twist bit. I would rather use 400 grit sand paper or fine abrasive padding than any sort of standard drill and bit. **Q: How many rotations does this motor make a minute** A: As stated on the label.... 100 revolutions per minute (rpm) **Q: Is this brushed or brushless?** A: this is a brushed motor ## Customer Reviews ### ⭐⭐⭐⭐⭐ Has been working reliably for a year, good torque, perfect for Arduino *by J***. on December 30, 2024* I am using this for a Halloween prop where it hoists a spider (one of those 4 foot spiders you can buy at the Halloween stores) up to an overhanging branch on our front yard tree. The spider weighs about 13 oz and there is some friction in the system but the motor hoists the spider quite handily at about 0.5 m/s. It doesn't sound like it's struggling and stays cool. I'm controlling it through a Pololu motor driver and Arduino Nano and it seems to work fine with this setup. The motor makes a little noise but you can barely hear it out on the sidewalk. All in all very happy with this motor. ### ⭐⭐⭐⭐⭐ High Torque *by W***O on April 6, 2024* Motor used to drive a Pastamatic re-spooler. Specifically selected the 100 RPM, 12V, motor given the higher torque specification. In fact the motor is able to re-spool without slowing down, nor does the motor get hot during operation even with back to back jobs. Overall the quality of the motor appears to be very good and the advertised specifications are real. I'm very happy with this purchase having come off of a different motor that simply was substandard not able to meet the specified torque. ### ⭐⭐⭐⭐⭐ works great *by D***B on November 3, 2024* it is just what i needed to run a small peristaltic pump on a mister for my mill. I use a small dc speed controller to vary the output as needed. makes for a steady flow and I can use less air pressure also. ## Frequently Bought Together - Greartisan DC 12V 100RPM Gear Motor High Torque Electric Micro Speed Reduction Geared Motor Centric Output Shaft 37mm Diameter Gearbox - 4Pcs 6mm Flange Coupling Connector, Rigid Guide Model Coupler Accessory, Shaft Axis Fittings for DIY RC Model Motors - Black 25mm DC Gear Motors Mounting Bracket, Iron Anti-Rust Gearbox L-Shape Fixed Seat, Gear Reduction Motor Holder --- ## 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.us/products/44275381-dc-12v-100rpm-gear-motor-high-torque-electric-micro-speed](https://www.desertcart.us/products/44275381-dc-12v-100rpm-gear-motor-high-torque-electric-micro-speed) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-12*