7.5kW 8P 220V
Max 18,000 RPMKnee Speed
6,000 RPM
Rated Torque
7.6 Nm
Rated Frequency
400 Hz
Maximum Power
7.5 kW
BT30 / Water-cooled
Model A BT30 125mm 7.5KW
Model A BT30 125mm 7.5KW is the standard BT30 125mm platform for buyers who need a balanced 7.5 kW ATC spindle with 18000 / 24000 RPM options.
Compare the listed spindle price first, then request freight, lead time, and delivery details for this model.
Power
7.5 kW
Speed
18000 / 24000 RPM
Tool holder
BT30
Cooling
Water
Voltage
220V / 380V
Structured specifications
Confirmed product parameters
Review the spindle identity, output class, mechanical platform, and electrical configuration before matching this product to a machine, VFD, and cooling setup.
Model identity
- Model
- Model A BT30 125mm 7.5KW
- Series
- Model A
- Type
- ATC Spindle Motor
- Tool holder
- BT30
- Body diameter
- 125mm
- Cooling
- Water
- Lubrication
- Grease
Performance
- Power
- 7.5 kW
- Speed summary
- 18000 / 24000 RPM
- Rated torque
- 7.6 Nm
- Rated torque (Nm)
- 7.6
- Pole options
- 4P, 8P
Mechanical platform
- Front bearings
- 7008 x 2
- Rear bearings
- 7006 x 2
- Body OD
- 125 mm
- Overall length
- 465 mm
Electrical parameters
- Voltage summary
- 220V / 380V
- Voltage options
- 220V, 380V
- Rated frequency
- 8P 220V: 400 Hz; 8P 380V: 800 Hz; 4P: 400 Hz
- Maximum frequency
- 8P: 1200 Hz; 4P 18000: 600 Hz; 4P 24000: 800 Hz
- Rated speed
- 8P: 18000 RPM; 4P: 18000 / 24000 RPM
- Knee speed
- 8P 220V: 6000 RPM; 8P 380V: 12000 RPM; 4P: 12000 RPM
- Maximum speed
- 8P: 18000 RPM; 4P: 18000 / 24000 RPM
Applications
- Applications
- General precision machining, BT30 routing, Extended-duty production work
Variant matrix
Voltage, pole, and speed combinations
Use this matrix to match voltage, pole count, speed range, and torque to the required VFD and machine-side configuration.
| Variant | Power | Voltage | Poles | Speed | Torque |
|---|---|---|---|---|---|
| 7.5KW 220V 4POLES 18000RPM | 7.5 kW | 220V | 4P | 18000 RPM | 7.6 Nm |
| 7.5KW 220V 4POLES 24000RPM | 7.5 kW | 220V | 4P | 24000 RPM | 7.6 Nm |
| 7.5KW 380V 4POLES 18000RPM | 7.5 kW | 380V | 4P | 18000 RPM | 7.6 Nm |
| 7.5KW 380V 4POLES 24000RPM | 7.5 kW | 380V | 4P | 24000 RPM | 7.6 Nm |
| 7.5KW 220V 8POLES 18000RPM | 7.5 kW | 220V | 8P | 18000 RPM | 7.6 Nm |
| 7.5KW 380V 8POLES 18000RPM | 7.5 kW | 380V | 8P | 18000 RPM | 7.6 Nm |
Performance curves
Power, Torque, and Frequency Curves
Reference curves for the 7.5kW motor group, calculated at 500 RPM intervals with constant torque below knee speed and constant power above it.
7.5kW 8P 380V
Max 18,000 RPMKnee Speed
12,000 RPM
Rated Torque
7.6 Nm
Rated Frequency
800 Hz
Maximum Power
7.5 kW
7.5kW 4P 220V / 380V Independent Versions
Max 24,000 RPMKnee Speed
12,000 RPM
Rated Torque
7.6 Nm
Rated Frequency
400 Hz
Maximum Power
7.5 kW
Dimension reference
125 mm 5.5 kW / 7.5 kW model size comparison
Use this drawing to compare the Model A, Model B and Model C 125 mm platforms before confirming mounting envelope and machine-side clearance.
Application fit
Where this spindle makes sense
Review these machining contexts against your material, tool-holder system, duty cycle, and machine envelope before selecting the spindle platform.
Model A BT30 125mm 7.5KW CNC machining center application
BT30 ATC spindle use in CNC machining centers and router platforms.
Model A BT30 125mm 7.5KW 3C electronics manufacturing application
3C and aluminum machining workloads benefit from stable high-speed spindle selection.
Choose this model when
- Choose it when the machine is built around BT30 automatic tool change tooling.
- Choose it when the 125mm mounting envelope and 7.5 kW output match the machine design.
- Choose it when the required speed path is 18000 / 24000 RPM and the VFD can support 220V / 380V.
Consider another spindle when
- Avoid it when the workload requires the reinforced Model B rigidity profile.
- Avoid it when the machine specifically requires HSK40E dual-contact tooling.
- Choose the lower-cost 12000 RPM Basic spindle instead when its speed and duty range are sufficient for the project.
Installation and integration
Confirm these details before commissioning
VFD matching
- Match the VFD to 7.5 kW, 220V / 380V, pole count, and maximum frequency before ordering.
- Keep 4P and 8P variants separate during quotation because speed and frequency limits differ.
- Do not assume an existing VFD is compatible without checking the rated current and frequency range.
Cooling setup
- This product is listed as water cooled; plan pump, tubing, reservoir or chiller capacity before installation.
- Confirm coolant flow before high-speed trial operation and monitor temperature during the first production run.
Wiring checks
- Use the wiring diagram as an integration reference and verify connector pinout before energizing the spindle.
- Confirm grounding, cable shielding, and VFD parameter setup before the first speed ramp.
Precision reference
High-Precision Spindle Runout
Critical spindle accuracy reference for precision machining and surface finish control.
Runout accuracy context
The spindle platform is selected for machining applications where tool concentricity, surface finish, and dimensional consistency need to be reviewed before final integration.
Taper Internal Runout
≤ 0.003 mm
Reference for spindle taper concentricity before precision toolholding evaluation.
100 mm Test Bar Runout
≤ 0.01 mm
Reference point for checking tool extension accuracy under inspection conditions.
Quality inspection
Pre-dispatch inspection points
Each spindle order is reviewed against the selected configuration before packing. The inspection flow focuses on model match, connector condition, rotation smoothness, and shipment readiness before the unit leaves the factory.
Inspection focus
The checklist below summarizes the final checks used to reduce configuration mismatch, connector issues, and avoidable handling problems before installation planning begins.
- 01
Configuration match
Verify bearing specification, preload condition, and spindle rotation smoothness before dispatch.
- 02
Mechanical and electrical condition
Measure spindle nose runout and inspect connector pins before shipment.
- 03
Shipment readiness
Confirm product series, tool-holder interface, and body platform against the ordered configuration.
Product details
Additional product notes
Product Context
Model A BT30 125mm 7.5KW is the standard BT30 125mm platform for buyers who need a balanced 7.5 kW ATC spindle with 18000 / 24000 RPM options.
This 125 mm Model A BT30 platform is intended for higher-power BT30 applications where the machine can support the larger body size and cooling requirement. Confirm the cabinet voltage, VFD matching, spindle mounting envelope, and target duty cycle before quotation.
Engineering Selection Notes
- Tool holder: BT30
- Body platform: 125mm
- Power class: 7.5 kW
- Speed path: 18000 / 24000 RPM
- Rated torque reference: 7.6 Nm
- Positioning: larger 125 mm power class with ceramic ball bearing construction.
Choose it when the machine is built around BT30 automatic tool change tooling. Choose it when the 125mm mounting envelope and 7.5 kW output match the machine design. Choose it when the required speed path is 18000 / 24000 RPM and the VFD can support 220V / 380V.
Applications and Use Cases
- General precision machining
- BT30 routing
- Extended-duty production work
These use cases should be checked against the machine envelope, tool-holder system, VFD capacity, cooling setup, and expected duty cycle before quotation.
Engineering quote
Request support for Model A BT30 125mm 7.5KW
Send your machine model, line voltage, spindle power, control signal preference, and destination country. We use these inputs to confirm the matching spindle and inverter setup before we reply.
Machine
Router or machining center model
Electrical
Voltage, frequency, inverter pairing
Cooling
Air or water cooling preference
Delivery
Duty cycle and destination country
Quotation workflow
- 01
Confirm machine-side requirements
Match spindle power, speed range, control wiring, and supply class to the machine.
- 02
Review electrical and cooling details
Check voltage, inverter compatibility, and thermal management requirements.
- 03
Return the recommended configuration
Confirm the recommended setup, production window, and shipment destination.
Request a Quote
The selected model is included with your request so technical review can start from the correct configuration.
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