--- product_id: 165407226 title: "RATTMMOTOR 500W CNC Air Cooled Spindle Motor ER11 12000RPM + Input Voltage AC110V-220V Speed Controller with Power Supply + 52mm Clamp for CNC Router Milling Machine" brand: "rattmmotor" price: "$204.28" currency: USD in_stock: true reviews_count: 8 category: "Rattmmotor" url: https://www.desertcart.us/products/165407226-rattmmotor-500w-cnc-air-cooled-spindle-motor-er11-12000rpm-input store_origin: US region: United States of America --- # 500W high power output 12000 RPM ultra-fast speed Air-cooled for long runtime RATTMMOTOR 500W CNC Air Cooled Spindle Motor ER11 12000RPM + Input Voltage AC110V-220V Speed Controller with Power Supply + 52mm Clamp for CNC Router Milling Machine **Brand:** rattmmotor **Price:** $204.28 **Availability:** ✅ In Stock ## Summary > ⚙️ Power your CNC projects with precision and unstoppable speed! ## Quick Answers - **What is this?** RATTMMOTOR 500W CNC Air Cooled Spindle Motor ER11 12000RPM + Input Voltage AC110V-220V Speed Controller with Power Supply + 52mm Clamp for CNC Router Milling Machine by rattmmotor - **How much does it cost?** $204.28 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/165407226-rattmmotor-500w-cnc-air-cooled-spindle-motor-er11-12000rpm-input) ## Best For - rattmmotor enthusiasts ## Why This Product - Trusted rattmmotor brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last & Cool:** Air-cooled design with reinforced fan for quiet, long-lasting operation. - • **Stable & Smooth Control:** Pulse width tech ensures ultra-stable speed even at low RPMs. - • **Safety-First Engineering:** Soft start and overcurrent protection keep your workflow uninterrupted. - • **Global Voltage Compatibility:** Seamlessly switch between 110V and 220V for worldwide use. - • **Precision at Lightning Speed:** Experience up to 12000 RPM for flawless milling and routing. ## Overview The RATTMMOTOR 500W CNC Air Cooled Spindle Motor delivers a robust 500W power output with speeds up to 12000 RPM, optimized for CNC routers and milling machines. Featuring a versatile AC110V-220V input with adjustable DC output, it ensures global compatibility and precise speed control via pulse width modulation. Its air-cooled design with a reinforced fan guarantees quiet, reliable operation during extended use, while built-in soft start and overcurrent protection enhance safety and durability. ## Description Product description The working environment Ambient air temperature: -10 ~ 40 ° C. The relative humidity of the air is below 85%, and the ventilation is good. Installation in a place with good ventilation, no severe impact, no vibration, no explosive danger medium and no conductive metal powder. Notice This spindle motor controller is suitable for controlling 50-500W spindle motors, it is wide voltage, i.e. 110V-220VAC, there is no need to switch to 110V or 220V voltage mode, it can be used directly. Spindle parameters Idling speed: 2000-12000 rev / min Power: 500W Torque: 0.5NM Working voltage: 12-100VDC Diameter: 52mm Insulation resistance: >2 megohms Insulation dielectric strength: 400V The diameter of the chuck part is: 16mm Spindle radial runout 0.01-0.03 high precision Can be used for solid wood PCB engraving, drilling, etc This motor has quiet operation, small volume and high speed, and the rear end of the motor is reinforced with a cooling fan, which can be safely worked for a long time! Detailed technical parameters of the speed controller Input voltage: AC110-AC220V±10% Global voltage 50/60Hz Current limit: 6A Armature output voltage: DC0 ~ 100V adjustable Adapted motor power: 50W~500W Wiring: terminal type (convenient and fast) External dimensions: length 130mm × width 100mm × height 51mm Product features Adopt pulse width technology to make the speed more stable, and the speed is high under low speed. With overcurrent protection cut-off device to make performance more reliable. With a soft start device to eliminate motor starting current is too large. Review: Good value for the money - As some reviewers said it was getting hot to the touch, After several runs it is slightly warm now, It is verry quiet compared to the 775, 20,000 motor. Seems to have plenty of power to cuts most materials with ease I cut some aluminum and it did verry well. Verry easy to set up and mount. I would recommend this motor. Review: Power supply died after 3 usage. - I thought it was a good deal until it didn't work anymore, now I'm stuck with a nice motor but dead power supply. My return and product support windows have already closed. ## Features - Air Cooled Spindle-- Power: 500W; Idling Speed: 2000-12000r/min; Torque：0.5NM; Diameter: 52mm. - Speed Controller-- Armature output voltage: DC0 ~ 100V adjustable; Input Voltage: AC100-AC220V±10% Global voltage 50/60Hz(User can change the power supply to 110V according to their needs); Current Limit: 6A; Wiring: Terminal type (Convenient and fast). - Adopt pulse width technology to make the speed more stable, and the speed is high under low speed. - With overcurrent protection cut-off device to make performance more reliable; With a soft start device to eliminate motor starting current is too large. - Note: This motor has quiet operation, small volume and high speed, and the rear end of the motor is reinforced with a cooling fan, which can be safely worked for a long time! ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07ZHFV4N5 | | Best Sellers Rank | #89,693 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #53 in Motor Speed Controllers | | Brand | RATTMMOTOR | | Brand Name | RATTMMOTOR | | Customer Reviews | 4.4 out of 5 stars 45 Reviews | | Horsepower | 500 Watts | | Item Weight | 1.67 Kilograms | | Manufacturer | RTM | | Material | Stainless Steel | | Material Type | Stainless Steel | | Shaft Diameter | 16 Millimeters | | Speed | 12000 RPM | | UPC | 769135311916 | | Voltage | 220 Volts | ## Product Details - **Brand:** RATTMMOTOR - **Horsepower:** 500 Watts - **Material:** Stainless Steel - **Speed:** 12000 RPM - **Voltage:** 220 Volts ## Images ![RATTMMOTOR 500W CNC Air Cooled Spindle Motor ER11 12000RPM + Input Voltage AC110V-220V Speed Controller with Power Supply + 52mm Clamp for CNC Router Milling Machine - Image 1](https://m.media-amazon.com/images/I/819U4RPkugL.jpg) ![RATTMMOTOR 500W CNC Air Cooled Spindle Motor ER11 12000RPM + Input Voltage AC110V-220V Speed Controller with Power Supply + 52mm Clamp for CNC Router Milling Machine - Image 2](https://m.media-amazon.com/images/I/91r03g1aPUL.jpg) ![RATTMMOTOR 500W CNC Air Cooled Spindle Motor ER11 12000RPM + Input Voltage AC110V-220V Speed Controller with Power Supply + 52mm Clamp for CNC Router Milling Machine - Image 3](https://m.media-amazon.com/images/I/91UWG0R+gWL.jpg) ![RATTMMOTOR 500W CNC Air Cooled Spindle Motor ER11 12000RPM + Input Voltage AC110V-220V Speed Controller with Power Supply + 52mm Clamp for CNC Router Milling Machine - Image 4](https://m.media-amazon.com/images/I/915QpRtQP-L.jpg) ![RATTMMOTOR 500W CNC Air Cooled Spindle Motor ER11 12000RPM + Input Voltage AC110V-220V Speed Controller with Power Supply + 52mm Clamp for CNC Router Milling Machine - Image 5](https://m.media-amazon.com/images/I/91UV1tvxH-L.jpg) ## Questions & Answers **Q: what size is the screws? also if it is metric or imperial.** A: The bracket screws are M5 x 0.8 **Q: On the label "power". Which screw is plus and which screw is minus? They are labeled 5 and 6.** A: Those are for main AC voltage in (110V/220V from the wall) there is no + nor - **Q: brackets--how many? I need 2** A: There is one bracket (as shown). Not sure why you need two brackets, the one that is included is sturdy enough (it is solid aluminum) to stabilize the motor. **Q: Did motor is water-resistant or waterproof?** A: this one isn't waterproof ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good value for the money *by H***R on April 25, 2023* As some reviewers said it was getting hot to the touch, After several runs it is slightly warm now, It is verry quiet compared to the 775, 20,000 motor. Seems to have plenty of power to cuts most materials with ease I cut some aluminum and it did verry well. Verry easy to set up and mount. I would recommend this motor. ### ⭐⭐⭐⭐⭐ Power supply died after 3 usage. *by R***. on July 9, 2024* I thought it was a good deal until it didn't work anymore, now I'm stuck with a nice motor but dead power supply. My return and product support windows have already closed. ### ⭐⭐⭐⭐⭐ Good product *by R***Y on May 21, 2022* Good spindle when set up ## Frequently Bought Together - RATTMMOTOR 500W CNC Air Cooled Spindle Motor ER11 12000RPM + Input Voltage AC110V-220V Speed Controller with Power Supply + 52mm Clamp for CNC Router Milling Machine - Doesbot CNC 3018 Update Kit, Including Sliding Table with Motor, 52mm Spindle Fixture, X Axis Scs10uu Slider, T8 lead 4mm screw nut and fixing seat, With 2 limit switches --- ## 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/165407226-rattmmotor-500w-cnc-air-cooled-spindle-motor-er11-12000rpm-input](https://www.desertcart.us/products/165407226-rattmmotor-500w-cnc-air-cooled-spindle-motor-er11-12000rpm-input) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-21*