what size is the screws? also if it is metric or imperial.

The bracket screws are M5 x 0.8

On the label "power". Which screw is plus and which screw is minus? They are labeled 5 and 6.

Those are for main AC voltage in (110V/220V from the wall) there is no + nor -

brackets--how many? I need 2

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.

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RATTMMOTOR 500W CNC Air Cooled Spindle Motor ER11 12000RPM | with Input Voltage AC110V-220V Speed Controller with Power Supply + 52mm Clamp for CNC Router Milling Machine

Product ID: 165407226

Details

Brand
RATTMMOTOR
Horsepower
500 watts
Material
Stainless
Speed
12000 rpm
Voltage
220 volts

⚡500W high power output

🔄12,000 RPM max speed

❄️Air-cooled for long runtime

¥35169

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Description

⚙️ Power your CNC projects with precision and cool confidence!

SMART SAFETY - Built-in overcurrent protection and soft start for reliable, worry-free use
SPEED ON DEMAND - Adjustable 2000-12000 RPM with pulse width tech for ultra-stable rotation
GLOBAL VOLTAGE READY - Supports AC100-220V ±10%, perfect for any workspace worldwide
PRECISION POWERHOUSE - 500W motor delivers consistent torque for demanding CNC tasks
COOL QUIET OPERATION - Integrated air cooling fan ensures silent, long-lasting performance

The RATTMMOTOR 500W CNC Air Cooled Spindle Motor ER11 offers a robust 500W power output with speeds adjustable from 2000 to 12000 RPM. Designed for global voltage compatibility (AC100-220V), it features advanced pulse width technology for stable speed control, an air cooling fan for quiet and extended operation, and built-in safety mechanisms including overcurrent protection and soft start. Compact yet powerful, it’s ideal for professional CNC routing and milling applications.

Specifications

ASIN	B07ZHFV4N5
Best Sellers Rank	#320,139 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #350 in Motor Speed Controllers
Brand Name	RATTMMOTOR
Customer Reviews	4.5 4.5 out of 5 stars (47)
Horsepower	500 watts
Item Weight	1.67 kg
Manufacturer	RTM
Material Type	Stainless Steel
Shaft Diameter	16 millimeters
Speed	12000 rpm
UPC	769135311916
Voltage	220 volts

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TrustScore 4.5 | 7,300+ reviews

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¥35169

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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Best international shipping I've ever tried. Worth every penny!

3 days ago

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