Description
xSJ-BG180F/150-01☐ (Mitsubishi Electric)
SJ-BG180F/150-01☐ is a Mitsubishi Electric SJ-BG series built-in AC spindle motor, designed for heavy-duty CNC machining centers requiring a balance of:
- high rigidity (large frame built-in spindle)
- strong cutting torque
- stable thermal behavior under continuous load
- integrated spindle construction
- 15,000 rpm class operation
It is part of the SJ-BG built-in spindle motor family, where the motor is directly integrated into the machine spindle housing for high stiffness and precision.
🔧 Model code breakdown
| Code section | Meaning |
|---|---|
| SJ | Mitsubishi spindle motor family |
| BG | Built-in spindle motor series |
| 180F | 180 mm frame, F-type high-capacity variant |
| 150 | 15,000 rpm class |
| 01 | winding / design version |
| ☐ | OEM / machine-tool builder option code |
So:
SJ-BG180F/150-01☐ = 180 mm built-in spindle motor designed for ~15,000 rpm with high-capacity F-type configuration
🔧 Verified specifications (SJ-BG180F/150-01)
From Mitsubishi official SJ-BG specification tables:
| Parameter | Value |
|---|---|
| Continuous rated output | 15 kW |
| Short-time rated output | 22 kW (10% ED) |
| Higher short-time rating | 37 kW (15% ED) |
| Acceleration/deceleration output | 22–37 kW class |
| Actual accel/decel output | 26.4–44.4 kW |
| Base speed | 1650 rpm (low-speed coil) |
| High-speed coil max | up to ~15,000 rpm class system operation |
| Rotor inertia | 0.023 kg·m² |
| Frame size | 180 mm class |
| Cooling | Liquid / oil jacket cooling |
⚙️ What makes the “180F” variant special
Within the SJ-BG180 family:
| Variant | Character |
|---|---|
| 180B | Balanced general-purpose |
| 180D | High rigidity / heavy cutting |
| 180F | Highest output & heaviest-duty variant |
The F-type is the most powerful configuration in this frame size, optimized for:
- maximum torque capability
- heavy rough machining
- high load stability
- strong thermal capacity
Compared to B and D types, the F variant is designed for:
- 🧱 maximum structural robustness
- ⚙️ higher continuous machining load
- 🔩 strong spindle stiffness under cutting stress
⚙️ What “☐” means
The square symbol represents:
OEM / machine-builder customization option
It may define:
- encoder type
- bearing preload setting
- connector orientation
- balancing grade
- cooling or mounting variations
🏭 Typical applications
SJ-BG180F/150-01☐ is used in:
- heavy-duty CNC machining centers
- mold & die roughing and finishing
- steel cutting / high-load milling
- aerospace structural machining
- high-rigidity production machines
It is selected when machines need:
- ⚖️ maximum torque in BG180 family
- 🧱 highest rigidity spindle construction
- 🎯 stable machining under heavy cutting loads
- ⚡ integrated spindle performance in large machines
⚖️ Position in Mitsubishi spindle lineup
| Series | Role |
|---|---|
| SJ-V | General-purpose external spindle motors |
| SJ-VL | Low-inertia high-speed spindles |
| SJ-DG | High-torque cutting spindles |
| SJ-DL | Ultra high-speed external spindles |
| SJ-BG | Built-in integrated spindle motors |
🧠 Simple explanation
SJ-BG180F/150-01☐ is the highest-output 180 mm-class built-in CNC spindle motor, designed for heavy-duty machining centers requiring maximum rigidity and cutting power at around the 15,000 rpm class.
Additional Information
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Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
Custom Tab
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