--- product_id: 459903792 title: "RATTMMOTOR 12-48VDC 300 Watt Spindle Motor ER16 Collet, 52mm, 400mN.m, 300W Air Cooled Spindle Motor 12000RPM for CNC Engraver Router Milling Machine" brand: "rattmmotor" price: "¥3801" currency: JPY in_stock: false url: https://www.desertcart.jp/products/459903792-rattmmotor-12-48vdc-300-watt-spindle-motor-er16-collet-52mm store_origin: JP region: Japan --- # 300W high power output Ultra-precise 0.01-0.03mm runout Up to 12,000 RPM speed RATTMMOTOR 12-48VDC 300 Watt Spindle Motor ER16 Collet, 52mm, 400mN.m, 300W Air Cooled Spindle Motor 12000RPM for CNC Engraver Router Milling Machine **Brand:** rattmmotor **Price:** ¥3801 **Availability:** ❌ Out of Stock ## Summary > ⚙️ Elevate your CNC game with precision power that never quits! ## Quick Answers - **What is this?** RATTMMOTOR 12-48VDC 300 Watt Spindle Motor ER16 Collet, 52mm, 400mN.m, 300W Air Cooled Spindle Motor 12000RPM for CNC Engraver Router Milling Machine by rattmmotor - **How much does it cost?** ¥3801 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/459903792-rattmmotor-12-48vdc-300-watt-spindle-motor-er16-collet-52mm) ## 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 - • **Speed Demon:** Idling speed maxes out at 12,000 RPM for ultra-smooth milling and engraving. - • **Robust & Reliable:** Air-cooled design keeps the motor running cool under pressure, extending tool life. - • **Precision Engineering:** Spindle radial runout as low as 0.01mm ensures razor-sharp accuracy on every cut. - • **Powerhouse Performance:** 300W motor delivers consistent, high-efficiency power for demanding CNC tasks. - • **Versatile Voltage Range:** Operates seamlessly between 12-48VDC, adapting to your custom setups. ## Overview The RATTMMOTOR 300W air-cooled spindle motor features a 52mm diameter and ER16 collet, delivering up to 12,000 RPM and 400mN.m torque. With an ultra-precise spindle radial runout of 0.01-0.03mm and a flexible 12-48VDC operating voltage, it’s engineered for high-accuracy CNC engraving, routing, and milling applications. ## Description Package Include: 1× 300W DC Air Cooled Spindle Motor ER16 12-48VDCProduct Description:Speed: idling speed up to 12000 rpmPower: 300WCollet: ER16Working voltage: 12-48VDCTorque: 400mN.mInsulation resistance:> 2 megohmsInsulation dielectric strength: 400VSpindle motor diameter: 52mmLength of chuck part: 48mmDiameter of the chuck part: 16mmTotal motor length: 175mmSpindle radial runout: 0.01-0.03 high precisionProduct use: can be used for solid wood, PCB, carving, drilling, etc. ## Features - Power: 300W; Operating Voltage: 12-48VDC - Diameter: 52mm; Total length of motor:175mm - Speed: Idling speed can reach 12000RPM - Frequency: 0-400Hz； Torque: 400mN.m - Spindle radial runout: 0.01-0.03 high precision; Collet: ER16 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09Y3ZFTC1 | | ASIN | B09Y3ZFTC1 | | Brand Name | RATTMMOTOR | | Customer Reviews | 4.2 4.2 out of 5 stars (28) | | Customer reviews | 4.2 4.2 out of 5 stars (28) | | Date First Available | 10 August 2022 | | Horsepower | 300 Watts | | Item Dimensions W x H | 5.2W x 17.5H centimeters | | Item model number | RTMER16 | | Manufacturer | RTM | | Manufacturer | RTM | | Material Type | Metal | | Model | RTMER16 | | Part Number | RTMER16 | | Product Dimensions | 5.21 x 5.21 x 17.5 cm; 862 g | | Speed | 12000 RPM | | Voltage | 48 Volts (DC) | | Wattage | 300 watts | ## Product Details - **Brand:** RATTMMOTOR - **Horsepower:** 300 Watts - **Product dimensions:** 5.2W x 17.5H centimeters - **Speed:** 12000 RPM - **Voltage:** 48 Volts (DC) ## Images ![RATTMMOTOR 12-48VDC 300 Watt Spindle Motor ER16 Collet, 52mm, 400mN.m, 300W Air Cooled Spindle Motor 12000RPM for CNC Engraver Router Milling Machine - Image 1](https://m.media-amazon.com/images/I/61xGkE+fvLL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: Look from end fan side，the rotation is cw or ccw?** A: Fan side is CCW. But side is CW **Q: How much does this spindle weigh?** A: The spindle is 1.75lb or 0.8kg **Q: Do you need a seperate power supply for a sainsmart 4040 pro?** A: Yes, you would need a separate power supply. ## Frequently Bought Together - RATTMMOTOR 12-48VDC 300 Watt Spindle Motor ER16 Collet, 52mm, 400mN.m, 300W Air Cooled Spindle Motor 12000RPM for CNC Engraver Router Milling Machine - Paddsun 7 Pcs/Set ER11 Spring Collet Set for CNC Engraving Machine & Milling Lathe Tools 1/4 1/8 1/16 3/16 3/32 5/32 7/32 inch - Genmitsu 40pcs End Mills CNC Router Bits, 1/8" Shank CNC Cutter Milling Carving Bit Set Including 2-Flute Flat Nose & Ball Nose, Nano Blue Coat & Titanium Coat, MC40A --- ## 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.jp/products/459903792-rattmmotor-12-48vdc-300-watt-spindle-motor-er16-collet-52mm](https://www.desertcart.jp/products/459903792-rattmmotor-12-48vdc-300-watt-spindle-motor-er16-collet-52mm) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-15*