What kind of VFD is required for a 40,000 RPM spindle?

This spindle requires a specialized high-frequency Variable Frequency Drive (VFD) capable of outputting at least 1333 Hz. Standard industrial VFDs (typically 400-600 Hz) will not be able to drive this motor to its rated speed.

Why is the 4-pole architecture significant at 40,000 RPM?

A 4-pole design provides more balanced magnetic force and higher torque stability compared to a 2-pole design at high frequencies. This reduces vibration and ensures a smoother rotational performance, which is critical for maintaining surface finish quality at 40,000 RPM.

Does this spindle require a chiller?

For a 3.7 kW motor operating at 40,000 RPM, we strongly recommend using a dedicated water chiller rather than a simple pump. A chiller allows for precise temperature control, ensuring the internal precision bearings are protected from heat-induced expansion and failure.

CNC Spindle Motor✓ In Stock & Ready to Ship

CNC Spindle Motor 3.7 kW, 40000 RPM, 380V Water Cooled ISO20

SKU / Model: W37400R380ISO20

Power Rating3.7 kw

Max Speed40000 rpm

Cooling MethodWater Cooled

Interface / Spec380v

The 3.7 kW Water-Cooled Spindle Motor is an elite-tier industrial solution designed for applications that demand extreme rotational velocity without sacrificing power. Delivering a robust 3.7 kW output at a staggering 40,000 RPM, this motor is specifically engineered for high-performance CNC milling, drilling, and micro-machining centers. Its advanced 4-pole motor architecture operates at an ultra-high frequency of 1333 Hz, ensuring exceptional dynamic balance and stability during high-load operations.

Shop Online