This 7.5 kW water-cooled automatic tool change spindle is engineered for reliable and continuous operation in demanding CNC machining applications. Its BT30 interface provides excellent rigidity and tool holding stability for milling, drilling, and routing tasks. The water-cooling system ensures consistent performance under long working hours, reducing heat generation and improving bearing life.
The PNP automatic tool change sensor enables fast and precise tool change operations, reducing idle time and improving machining efficiency. Designed with high-quality bearings and optimized internal balancing, this spindle runs smoothly with minimal vibration even at high speeds.
JGLM125-30-12-24Z/7.5
JST
380V
400-800HZ
12000-24000RPM
BT30
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Product Description
7.5 kW water-cooled ATC spindle motor with BT30 taper, designed for CNC routers and machining centers.
This high-power spindle delivers stable cutting performance, long service life and reliable automatic tool change capability.
Ideal for heavy-duty milling, drilling and engraving.
Water-cooled design provides superior heat dissipation for high-power operation
Maintains stable spindle temperature during long continuous machining
Extends bearing life and improves machining accuracy
Ideal for heavy-duty cutting and high-load CNC applications
Seamless automatic tool change system
Improves throughput and efficiency
Perfect match for CNC routers & machining centers
Reduces manual intervention & downtime
Standard BT30 tool holder for heavy cutting and high rigidity requirements
Excellent clamping force and strong tool holding stability
Suitable for large tool sizes and high torque machining
Compatible with most CNC machining centers and ATC tool magazines
| Specification | Details |
|---|---|
| Model | JGLM120-30-12-24Z/7.5 JGLM125-30-12-24Z/7.5 |
| Power | 7.5 KW |
| Cooling Method | Water cooling |
| Interface | BT30 |
| Speed Range | 12,000 — 24,000 RPM |
| Voltage | 380V |
| Frequency | 400–800Hz |
| Bearings | High Precision / Low Vibration |
| Runout | ≤ 0.002 mm |
| Max torque | 7 Nm |
| ATC Sensor | PNP (for automatic tool change) |
| Net Weight | 28 kg |
| Lubrication | Grease |
| Applications | CNC Routers, CNC machining centers, wood/MDF/metal processing |
JST-7.5KW water cooled ATC spindle motor.pdf
CNC Router Machines (Wood, MDF, Acrylic)
CNC Machining Centers
Composite Materials Cutting
Light Metal Milling (Aluminum, Copper, etc.)
Multi-station machining equipment
Professional electric spindle manufacturer with years of experience
Stable quality and component traceability
Good quality control and performance testing
Custom interface (BT40 / BT30 / ER Collet)
Custom power, speed, voltage, logo options
OEM solutions for machine builders
Exported worldwide: Europe, America, Asia, Middle East…
Local language sales support
After-sales and technical assistance
3 times longer working life(2 years for 8 hours/day).
15 times precision Runout off less than 0.002mm beyond average spindle motor.
Very easy and fast to assemble.
Electrical Connection: Connect U, V, W phases and protective earth per wiring diagram.
Cooling: Connect water inlet/outlet hoses; ensure water pump flow is stable.
Air Supply: Provide regulated clean air (if pneumatic tool change/air seal needed).
ATC Sensor: Connect PNP sensor wiring to the CNC control tool changer interface.
(Manufacturer wiring diagram and installation manual should be followed strictly.)
Inner protective foam case.
Outer plywood shipping box.
Optional: Custom-branded packaging available.
CE certification
EMC certification
LVD certification
quality certification
ROHS certification
UKCA certification
JST Company Outside
JST Workshop
JST Workshop
JST Workshop
JST Equipments
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Packing
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Packing
Use a high-quality VFD with a frequency range of 400‒800 Hz and a matched voltage output (e.g., 380 V 3-phase).
Make sure to set the V/F curve and acceleration/deceleration parameters according to the spindle's rated RPM and torque characteristics to ensure stable operation and long life.
Yes, a water chiller or recirculating cooling system is required to maintain stable coolant temperature. Water cooling provides superior heat dissipation for heavy-duty use and long continuous cutting periods.
This spindle uses the BT30 taper tool interface, which offers strong rigidity and high clamping force, suitable for larger tools and high-torque machining applications.
The PNP sensor detects tool presence and position during automatic tool change operations.
It connects directly to the CNC controller and sends a signal when the tool is correctly seated or released, ensuring reliable and fast tool changing.
Yes, the 7.5kW water-cooled BT30 spindle is capable of both heavy wood routing and metal machining, especially when paired with a suitable VFD, tooling, and feed strategy.
Its higher torque and water cooling make it suitable for demanding jobs.
Regularly check water cooling lines, hoses, and connectors to ensure leak-free and clean cooling;
verify ATC sensor wiring integrity; and ensure proper VFD setup. Bearings are sealed and greased, so no frequent lubrication is needed.
Every spindle motor has one year(12 months) warranty.
1.The electric spindle motor and VFD shall be suitable with each other. The specifications and parameter settings of the VFD shall match the nominal parameters of the spindle motor, and it will burn the spindle motor if the settings are not correct. (Therefore, the spindle motor must be connected to VFD at first.)
2.Before using water-cooled spindle motor, it shall ensure that cooling cycle system works normally. Please notice: the running under no cooling conditions is prohibited! The volume of cooling water is calculated as per 1 liter/minute, the minimum flow of cooling water is not less than 5 liter/minute, cooling water pipe and the nozzle shall be connected reliably and there is no leakage.
3.The cooling liquid shall be clean and free of grease and the temperature shall be within 5-30℃. The cooling medium shall carry out force cooling when the ambient temperature is higher than 30℃. The precision lathe requires the cooling liquid with a constant temperature of 20±2℃.
4.Important! The coolant temperature must be within 5℃ of the ambient temperature; ideally, the coolant temperature should be 5℃ lower than the ambient temperature. Otherwise, if the temperature difference is too large, condensation may form inside the electric spindle, leading to spindle damage.
5.If use water cooling machine, its temperature shall be within 22-25℃.
6.During storage and transport of the spindle motor, the status of high-speed grease inside the bearing will change. So, user shall run it at a low speed first by starting from the lowest speed of the spindle motor for 30 minutes and then 20 minutes for every 3000 rounds when they first time receiving spindle motors. Otherwise there will have abnormal sound, noise, heat and other phenomena, which will affect the bearing life if the spindle motor is started directly at a high speed. During long term storage, the spindle motor shall run (at low speed) for 15-30 minutes once a week at least.
7.Before daily machining, the spindle motor shall be warmed up, run for 15-20 minutes when the machining speed is reached and then performs precise machining. It is better to stop the spindle motor for two hours every day in order to recover its mechanical fatigue and prolong its life time.
8.The spindle motor adopts vapor lock and the gas source shall not be used until it has passed oil-water separator and dry filter. The air pressure is 0.2-0.25Mpa and the filtering precision is 5μm, otherwise there will cause damages to the bearing. Therefore, a good oil-water separator is essential.
9.Collet, nut and inner taper hole shall be cleaned when installing blades on the spindle motor in order to avoid any impact on the precision. The blade handle shall be inserted into the collet more than 15mm.
10.No hammering the end cover of the spindle motor. No hammering the collet and blade head when removing blades. No shocking or colliding during transport, storage and using, especially pay attention to the end of the spindle motor.
11.The spindle motor shall run in designated direction. (We will indicate the direction with an arrow.)
12.The spindle motor shall be installed and fixed according to the relevant drawings and instructions.
Spindle motor is also called high-speed electric spindle motor, refers to the revolution of a more than 10000 RPM AC motor. It has the advantages of fast speed, small size, lightweight, low material consumption, low noise, and low vibration, mainly used in wood, aluminum, stone, hardware, glass, PVC, and other industries.
Due to its wide application and meticulous work, fast speed, and excellent processing quality, making another ordinary motor can not meet the technical requirements of the spindle motor. Spindle motor plays an important role in the industrial production process, so it is particularly popular all over the world.
