5.5kW - 7.5kW ATC Spindle Motor

Industrial high-power ATC spindle platform

5.5kW - 7.5kW ATC Spindle Motor

Model 5.5kW / 7.5kW

Industrial high-power ATC spindle platform for heavier aluminum, mold and die, precision production, and long duty-cycle CNC machining.

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Known model facts

Power range
5.5 / 7.5 kW
Torque
5.6 / 7.6 Nm
Speed range
18,000-24,000 RPM
Body
125 mm OD
Confirmed source dataCore values were cross-checked against the integrated HTML, both xlsx parameter files, parameter table image, manual notes, and current ATC category page. C/P/S125 rows share power, speed, voltage, bearing, lubrication, frequency, and knee-speed data; interface differs by code family. 4P 24,000 RPM source rows currently list only the 220 V -2 code. No 380 V 4P 24,000 RPM code was added.

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 source tables list matching power, speed, voltage, bearing, and frequency rows across C/P/S125 series. This page consolidates those rows while preserving the source-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.

Source highlights

Power range
5.5 / 7.5 kW
Torque
5.6 / 7.6 Nm
Speed range
18,000-24,000 RPM
Body
125 mm OD

Technical specifications

Power Range
5.5 / 7.5 kW
Tool Interface
BT30 / HSK 40E
Speed Range
18,000-24,000 RPM
Poles
4P / 8P
Voltage
220 V / 380 V by listed source code
Rated Torque
5.6 / 7.6 Nm
Bearing System
7008x2 / 7006x2
Lubrication
Grease
Runout
Category reference <= 0.003 mm taper runout
VFD Control Mode
V/F Control only; no Vector Control
Cooling Flow
5-8 L/min
5.5kW - 7.5kW ATC Spindle Motor gallery reference
5.5kW - 7.5kW ATC Spindle Motor gallery reference
5.5kW - 7.5kW ATC Spindle Motor gallery reference
5.5kW - 7.5kW ATC Spindle Motor gallery reference
5.5kW - 7.5kW ATC Spindle Motor gallery reference
5.5kW - 7.5kW ATC Spindle Motor gallery reference
5.5kW - 7.5kW ATC Spindle Motor gallery reference
5.5kW - 7.5kW ATC Spindle Motor gallery reference
5.5kW - 7.5kW ATC Spindle Motor gallery reference
5.5kW - 7.5kW ATC Spindle Motor gallery reference
5.5kW - 7.5kW ATC Spindle Motor gallery reference
5.5kW - 7.5kW ATC Spindle Motor gallery reference

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 source-code rows support different cutting strategies.
  • Manual-derived 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

  • Send power class, Model A Standard/Model B Pro/Model C Max preference, BT30 or HSK 40E interface, 4P or 8P, voltage, maximum RPM, VFD frequency range, machine photos, and material.
  • Do not specify a 4P 24,000 RPM 380 V version from the current tables; the listed 4P 24,000 RPM version is 220 V only.
  • Confirm whether the required body length is Model A Standard/Model B Pro 465 mm or Model C Max 469 mm before replacement.

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

Published reference data
Rated/knee speed 6,000 RPM
Maximum speed 18,000 RPM
5.6 Nm or 7.6 Nm rated torque

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

Published reference data
Rated/knee speed 12,000 RPM
Maximum speed 18,000 RPM
Same bearing and interface families

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

Published reference data
Listed source code is 220 V
Rated/knee speed 12,000 RPM
End torque 3.52 Nm or 4.8 Nm

Core Model Data

ModelPowerVoltageMax SpeedPolesRated TorqueInterfaceRated / Max Frequency
Model A Standard 5.5kW 8P 220V5.5 kW220 V18,000 RPM8P5.6 NmBT30400 / 1,200 Hz
Model A Standard 5.5kW 8P 380V5.5 kW380 V18,000 RPM8P5.6 NmBT30800 / 1,200 Hz
Model A Standard 5.5kW 4P 220V5.5 kW220 V24,000 RPM4P5.6 NmBT30400 / 800 Hz
Model A Standard 7.5kW 8P 220V7.5 kW220 V18,000 RPM8P7.6 NmBT30400 / 1,200 Hz
Model A Standard 7.5kW 8P 380V7.5 kW380 V18,000 RPM8P7.6 NmBT30800 / 1,200 Hz
Model A Standard 7.5kW 4P 220V7.5 kW220 V24,000 RPM4P7.6 NmBT30400 / 800 Hz
Model B Pro 5.5kW5.5 kW220 / 380 V18,000-24,000 RPM8P / 4P5.6 NmBT30400-1,200 Hz
Model B Pro 7.5kW7.5 kW220 / 380 V18,000-24,000 RPM8P / 4P7.6 NmBT30400-1,200 Hz
Model C Max 5.5kW5.5 kW220 / 380 V18,000-24,000 RPM8P / 4P5.6 NmHSK 40E400-1,200 Hz
Model C Max 7.5kW7.5 kW220 / 380 V18,000-24,000 RPM8P / 4P7.6 NmHSK 40E400-1,200 Hz

Dimension Data

ModelInterfaceOuter DiameterOverall LengthFront BearingRear BearingLubrication
Model A StandardBT30125 mm465 mm7008 x 27006 x 2Grease
Model B ProBT30125 mm465 mmPremium 7008 x 2Premium 7006 x 2Grease
Model C MaxHSK 40E125 mm469 mmPremium 7008 x 2Premium 7006 x 2Grease

Power & Torque at Max Speed

Power ClassRated TorqueTorque at Max SpeedTypical Config
5.5 kW5.6 Nm3.52 Nm @ 18,000-24,000 RPM8P or 4P, BT30 or HSK 40E
7.5 kW7.6 Nm4.8 Nm @ 18,000-24,000 RPM8P or 4P, BT30 or HSK 40E

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 current xlsx source tables list the 4P 24,000 RPM version as 220V only. A 380V version should be added only after business/source 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?

The operation manual 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.

MODEL REFERENCES

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