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Free standard shipping on orders over $99
Estimated to be delivered on 12/01/2022 - 15/10/2022.
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.
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.
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SJ-2B6603TK is a Mitsubishi Electric SJ-B series built-in AC spindle motor, used in medium-to-heavy duty CNC machining centers. It belongs to the SJ-2B 6600-series, which is designed for high torque, stable low-speed cutting, and industrial-grade machining loads.
It sits in the same family as SJ-2B6602TK but uses a different winding/configuration (03 variant) that changes its torque–speed characteristics.
From Mitsubishi SJ-B series specification manual:
(Mitsubishi Electric CNC Spindle Motor Table)
| Parameter | Value |
|---|---|
| Continuous rated output | 15 kW (low-speed coil) / 15 kW (high-speed coil) |
| Short-time rated output | 22 kW (30 min rating) |
| Acceleration/deceleration output | 22 kW (standard) |
| Actual accel/decel output | 26.4 kW |
| Base speed | 600 rpm / 1200 rpm (coil dependent) |
| Maximum speed | 1500 rpm / 6000 rpm |
| Continuous torque | 239 N·m / 119 N·m |
| Short-time torque | 350 N·m / 175 N·m |
| Rotor inertia | 0.173 kg·m² |
| Frame size | 160–295 mm class |
| Cooling | Liquid / oil jacket cooling |
| Drive unit | MDS-D2-SP-320 |
| Code part | Meaning |
|---|---|
| SJ | Mitsubishi spindle motor family |
| 2B | SJ-B built-in spindle series |
| 6603 | 15 kW class, high-torque winding variant |
| TK | terminal / connector type |
So:
SJ-2B6603TK = 15 kW high-torque built-in spindle motor optimized for heavy-duty machining
| Feature | 6602TK | 6603TK |
|---|---|---|
| Power class | 11 kW | 15 kW class behavior |
| Torque tuning | Balanced | Higher torque / heavier cutting focus |
| Inertia | 0.133 kg·m² | 0.173 kg·m² (higher) |
| Application | Medium-heavy machining | Heavy-duty machining |
👉 In simple terms:
6603TK is the stronger, heavier-cutting variant in the 6600-series.
SJ-2B6603TK is used in:
It is selected when machines need:
| Series | Role |
|---|---|
| SJ-2B | compact built-in spindle motors (older generation) |
| SJ-BG | modern high-speed integrated spindles |
| SJ-DG | high-torque cutting spindles |
| SJ-DL | external high-speed spindle motors |
SJ-2B6603TK is a 15 kW-class built-in CNC spindle motor designed for heavy-duty machining, optimized for high torque and stable cutting performance under industrial loads.
Nam tempus turpis at metus scelerisque placerat nulla deumantos solicitud felis. Pellentesque diam dolor, elementum etos lobortis des mollis ut risus. Sedcus faucibus an sullamcorper mattis drostique des commodo pharetras loremos.Donec pretium egestas sapien et mollis. Pellentesque diam dolor cosmopolis etos lobortis.
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.
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.
| Drostique | Nam tempus turpis at metus scelerisque placerat nulla deumantos |
| Pharetro Lorem | Pellentesque diam dolor elementum etos lobortis des mollis |
| Milancelos | Donec pretium egestas sapien et mollis |
| Pellentesque | Sedcus faucibus an sullamcorper mattis drostique des commodo pharetras |
| Proin Molestie | Pellentesque diam dolor elementum etos lobortis des mollis |
| Cosmopolis | Donec pretium egestas sapien et mollis |
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