5.5kW - 7.5kW ATC Spindle Motor

Known model facts#

Product overview#

This 125 mm industrial ATC spindle platform covers 5.5kW and 7.5kW versions in BT30 and HSK 40E interface families. C125 and P125 code patterns are BT30 variants, while S125 is the HSK 40E series. The supplied tables list matching power, speed, voltage, bearing, and frequency rows across C/P/S125 series. This page consolidates those rows while preserving the listed-code limitation for 4P 24,000 RPM versions. Choose this platform when the machine needs stronger torque, a larger bearing group, and longer production duty than the compact 100 mm ATC spindle family.

Key highlights#

Technical specifications#

Product gallery#

Features#

• 125 mm industrial body for heavier production CNC machines.
• C125/P125 BT30 and S125 HSK 40E code families cover different interface requirements.
• 7008x2 front and 7006x2 rear bearing group supports stronger cutting loads.
• 5.6 Nm and 7.6 Nm rated torque choices for 5.5kW and 7.5kW machine classes.
• 18,000 RPM 8P and 24,000 RPM 4P listed model-code rows support different cutting strategies.
• VFD and tool-change safety notes are included for commissioning checks.

Applications#

• Heavy aluminum milling
• Mold and die machining
• Precision production CNC
• Aerospace-style non-ferrous work
• Long duty-cycle cutting
• Industrial ATC retrofits

Selection notes#

5.5kW / 7.5kW 8P 18,000RPM 220V#

5.5kW / 7.5kW 8P 18,000RPM 380V#

5.5kW / 7.5kW 4P 24,000RPM 220V#

Core Model Data#

Dimension Data#

Power & Torque at Max Speed#

Frequently asked questions#

Can this spindle be connected directly to mains power?#

No. It must be powered through a correctly configured VFD.

Which VFD control mode should be used?#

Use V/F Control mode only. Do not use Vector Control mode.

What is the difference between Model A Standard, Model B Pro, and Model C Max?#

Model A Standard is the general BT30 platform for balanced machining. Model B Pro adds upgraded rigidity and active liquid cooling for heavier loads. Model C Max uses HSK 40E dual-contact face/taper clamping for high-speed precision finishing.

Is there a 4P 24,000 RPM 380V version?#

The supplied parameter tables list the 4P 24,000 RPM version as 220V only. A 380V version should be added only after confirmation.

What is the body length difference between models?#

Model A Standard and Model B Pro share 465 mm overall length. Model C Max is 469 mm due to the HSK 40E interface structure. Confirm the required length before replacement.

What cooling flow is recommended?#

A commissioning reference is 5-8 L/min with 8 mm OD / 6 mm ID cooling tube. Active liquid cooling is strongly recommended for continuous production loads above 5.5kW.

Can tool change be triggered while rotating?#

No. Tool change should only be triggered after the spindle has fully stopped.

What information should I send for model matching?#

Send power class, Model A Standard/Model B Pro/Model C Max preference, BT30/HSK 40E interface, voltage, poles, max RPM, VFD frequency, machine type, material, and photos.