Is the #4 ground pin wired to their ground the body of the spindle? Discussion in forum's are saying some spindles aren't grounded.

Although I don't know, I have today seen pinouts for this genre of router that says 3 of the pins are connected to outputs U, V, W of the VFD, leaving one pin left. If that pin IS connected to ground, then the spindle will be able to used with a Z-Heightsetter connected to the machine to sense when electrical contact is made between the tool and the setter. My guess is "Yes." If you want to be sure, get a voltmeter and check the continuity between the ground of the CNC machine's power supply and the body of the mounted spindle. It should show continuity, that is resistance = 0 ohms.

How does this compare to the Huanyang?

Dear friend, first of all,thanks for your interested, if you said ,that is HuanYang brand Spindle motor, this spindle motor the quality more than HuanYang brand, you can buy one motor and test the quality, Kind regards Linda

Is this suitable for milling carbon steel?

This is the first mention I've seen that this class of machine is suitable for milling steel. It's typical represented for use with wood and aluminum. As noted elsewhere, the slowest rpm is too fast for steel.

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RATTMMOTOR CNC Spindle Motor, 3KW Water Cooled Spindle Motor 220V 12A ER20 Spindle 4-Bearings 100mm Spindle Motor 400HZ 3-Phase for CNC Router Engraving Milling Machine

RATTMMOTOR CNC Spindle Motor, 3KW Water Cooled Spindle Motor 220V 12A ER20 Spindle 4-Bearings 100mm Spindle Motor 400HZ 3-Phase for CNC Router Engraving Milling Machine

Product ID: 387114893

Details

Brand
RATTMMOTOR
Model name
GDZ100-3.0
Speed
24000 RPM
Voltage
220 Volts
Horsepower
3 Kilowatts

⚡3KW Power

💧Water-Cooled

🔄0-24000 RPM

$723.49

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Description

🚀 Elevate Your Craft with Precision Power!

DURABLE DESIGN - Stainless steel body and dust-proof cover ensure longevity.
EFFICIENT COOLING - Water-cooled system prevents overheating during intense tasks.
PRECISION ENGINEERING - Achieve a runout of less than 0.01mm for flawless results.
HIGH SPEED PERFORMANCE - Experience speeds up to 24000 RPM for rapid machining.
VERSATILE APPLICATIONS - Perfect for wood carving, engraving, and CNC machining.

The RATTMMOTOR CNC Spindle Motor is a robust 3KW, 220V water-cooled spindle designed for high-speed applications, featuring a precision runout of less than 0.01mm and a durable stainless steel body. Ideal for CNC routers and engraving machines, it operates at speeds up to 24000 RPM, ensuring efficiency and accuracy in non-metallic materials.

Specifications

ASIN	B09KKY1TGB
Best Sellers Rank	#429,702 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #43 in Power Milling Machine Replacement Parts #5,112 in Power Tool Replacement Parts
Brand	RATTMMOTOR
Brand Name	RATTMMOTOR
Customer Reviews	5.0 out of 5 stars 7 Reviews
Horsepower	3 Kilowatts
Item Weight	8.5 Kilograms
Manufacturer	Changsheng
Model	GDZ100-3.0
Part Number	GDZ-100-3.0
Speed	24000 RPM
Voltage	220 Volts

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