Look from end fan side，the rotation is cw or ccw?

Fan side is CCW. But side is CW

Do you need a seperate power supply for a sainsmart 4040 pro?

Yes, you would need a separate power supply.

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RATTMMOTOR 300W DC Spindle Motor ER16 Collet 52mm Air-Cooled Spindle Motor 12-48VDC 12000RPM for CNC Engraver Router Milling Machine

RATTMMOTOR 300W DC Spindle Motor ER16 Collet 52mm Air-Cooled Spindle Motor 12-48VDC 12000RPM for CNC Engraver Router Milling Machine

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Product ID: 626722690

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Details

Brand
RATTMMOTOR
Speed
12000 RPM
Voltage
48 Volts (DC)
Horsepower
300 Watts
Manufacturer
RTM

⚡300W Power

🔄12000 RPM Speed

🔌12-48VDC Voltage

Description

🚀 Elevate Your Craft with Unmatched Power!

SPEED DEMON - Achieve idling speeds of up to 12000 RPM for rapid and efficient operations.
ROBUST TORQUE - With a torque of 400N.m, this motor delivers the strength you need for heavy-duty projects.
COMPACT DESIGN - At just 52mm in diameter and 175mm in length, it fits seamlessly into your workspace.
UNLEASH PRECISION - Experience high precision with a spindle radial runout of just 0.01-0.03mm.
POWER MEETS VERSATILITY - 300W of power ensures you can tackle any CNC engraving or milling task with ease.

The RATTMMOTOR 300W DC Spindle Motor is a high-performance air-cooled spindle designed for CNC engravers and milling machines. With a powerful 300W output, it operates at a voltage range of 12-48VDC and can reach impressive speeds of up to 12000 RPM. Its compact design and high precision make it an essential tool for professionals seeking efficiency and reliability in their projects.