What is a Built-in Motor Spindle?

A Built-in Motor Spindle, also known as an integrated motor spindle, is a type of spindle where the electric motor is directly built into the spindle body. This design eliminates external belts, pulleys, or couplings resulting in compact size, reduced vibration, and higher rotational speeds. It is ideal for high-speed and high-precision machining operations. We are offering Built-in Motor Spindles for Drilling and Milling. They can be used for high speeds compared to Belt Driven and Direct Driven Spindle.

Why We Need Built-in Motor Spindle?

High Precision: Delivers consistent accuracy with minimal runout, essential for precision parts.
Space Saving: Integrated design reduces the need for additional mechanical components.
Lower Vibration: Ensures better surface finish and longer tool life.
Increased Speed: Capable of achieving ultra-high RPMs for faster material removal rates.
Energy Efficiency: Optimized motor integration reduces energy loss.
Reduced Downtime: Fewer mechanical parts mean lower maintenance and better reliability.
Compact Integration: Perfect fit for modern CNC machines where space is limited.

Features of Built-in Motor Spindle

Compact Design: The spindle and motor are integrated into a single housing, reducing machine footprint and simplifying design.
High-Speed & Acceleration: Capable of reaching very high rotational speeds with fast acceleration, ideal for demanding machining processes.
Minimal Vibration & High Rigidity: Enhanced balance and stiffness ensure better machining accuracy and reduced tool wear.
Thermal Stability: Built-in cooling systems (water or oil-based) help maintain consistent temperature, improving reliability.
High Torque & Power Output: Delivers high power density suitable for both light and heavy-duty cutting applications.

Spindle Type		120(SK30) / (HSK-E40)	150(SK30) / (HSK-A/E50)	150(SK40) / 150(SK40)	170(SK40) / (HSK-A63)	190(SK40) / (HSK-A63)	210(SK40) / 210(HSK-A63)
Spindle model		AB(M)S120g/m AD(C)-120g/m	HFS/HCS - 150g/m	150g/m	HFS/HCS - 170g/m	HFS/HCS -190g/m	HFS/HSC - 210g/m
Max. Speed	1/min	30,000	24,000/ 30,000	20000	20000	20000	16,000/18000
At Speed	1/min	12,020	11,830	11,830	5,875	3,890	3,010
Power	Kw	7.5/9	15/18	15/18	15/18	27/32	25/28
Voltage	V	220/380	220/380	220/380	220/380	220/380	220/380
Bearing	mm	Ø45	Ø55	Ø60/55	Ø70	Ø70	Ø80