Description
xSJ-BG180H/150-01☐ (Mitsubishi Electric)
SJ-BG180H/150-01☐ is a Mitsubishi Electric SJ-BG series built-in AC spindle motor, designed for heavy-duty CNC machining centers requiring:
- integrated spindle construction
- very high rigidity and structural strength
- high continuous torque capability
- stable thermal performance under heavy cutting load
- 15,000 rpm class operation
It belongs to the SJ-BG built-in spindle motor family, where the motor is directly embedded into the spindle structure for maximum stiffness and precision.
🔧 Model code breakdown
| Code section | Meaning |
|---|---|
| SJ | Mitsubishi spindle motor family |
| BG | Built-in spindle motor series |
| 180H | 180 mm frame, H-type high-output variant |
| 150 | 15,000 rpm class |
| 01 | winding / standard design version |
| ☐ | OEM / machine-tool builder option |
So:
SJ-BG180H/150-01☐ = high-output 180 mm built-in spindle motor for ~15,000 rpm machining
🔧 Verified specifications (key values)
From Mitsubishi SJ-BG specification tables:
| Parameter | Value |
|---|---|
| Continuous rated output | 15 kW / 26 kW (coil-dependent) |
| Short-time rated output | 26 kW (10% ED) / 37 kW (25% ED) |
| Acceleration/deceleration output | 26 kW / 37 kW |
| Actual accel/decel output | 31.2 kW / 44.4 kW |
| Base speed | 1200 rpm / 4700 rpm (coil dependent) |
| Maximum speed | 6000 rpm / 15000 rpm |
| Continuous torque | 119 N·m / 52.8 N·m |
| Rotor inertia | ~0.029 kg·m² |
| Frame class | 180 mm built-in spindle |
| Cooling | Liquid / oil jacket cooling |
| Heat class | F (155°C) |
⚙️ What makes the “180H” variant special
Within the SJ-BG180 family:
| Variant | Character |
|---|---|
| 180B | balanced general-purpose |
| 180D | high rigidity / heavy cutting |
| 180H | highest-output / highest torque class in 180 frame |
The H-type is designed for:
- maximum cutting torque in the 180 series
- strong roughing capability
- stable performance under continuous heavy load
- dual-coil operation (high/low speed flexibility)
Compared with B and D types:
- ⚡ highest power capability
- 🧱 strongest load handling
- 🔩 best suited for heavy machining cycles
⚙️ What “☐” means
The square symbol indicates:
OEM or machine-tool builder-specific configuration
It may include:
- encoder type
- bearing preload specification
- connector orientation
- balancing grade
- cooling or mounting customization
🏭 Typical applications
SJ-BG180H/150-01☐ is used in:
- heavy-duty CNC machining centers
- steel mold and die machining
- aerospace structural machining
- rough + finish combined machining
- high-load production machining lines
It is selected when machines need:
- ⚖️ maximum torque in BG180 family
- 🧱 extreme spindle rigidity
- 🎯 stable machining under heavy cutting
- ⚡ dual-range speed flexibility (low + high coil operation)
⚖️ Position in Mitsubishi spindle lineup
| Series | Role |
|---|---|
| SJ-V | General-purpose 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-BG180H/150-01☐ is the highest-output 180 mm-class built-in spindle motor, designed for heavy-duty CNC machining centers requiring maximum torque, rigidity, and stable performance up to 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.
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