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MITSUBISHI Spindle Drive
Brand: MITSUBISHI -
Cat: Servo Drive
Code:MDS-A-SP-110
| Combination name | Availability | Price |
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Spindle Drive Unit – Mitsubishi MDS-A-SP-110
The MDS-A-SP-110 is an AC spindle drive unit (“Spindle Drive Unit”) from Mitsubishi Electric’s MDS-A series, designed to drive AC spindle motors on machining centres and turning centres equipped with Mitsubishi CNC controllers (series M64, M65, M700). The “SP” designation identifies the spindle drive family within the MDS-A series, while “110” denotes the 11 kW rated output power class. Communication with the CNC is handled via SSCNET (Servo System Controller NETwork), Mitsubishi Electric’s proprietary high-speed serial network. This module belongs to the first generation of the Mitsubishi MDS drive family, now superseded by the MDS-B, MDS-C, MDS-D and MDS-E series.
The spindle drive is the heart of spindle control: it receives the speed reference from the CNC via SSCNET and regulates in real time the torque and speed of the AC spindle motor, managing both speed-mode operation (milling, turning) and angular positioning for spindle orientation and rigid tapping. A failure of the MDS-A-SP-110 renders the spindle completely uncontrollable, causing immediate machine downtime and making any machining operation impossible.
Mitsubishi Electric is one of Japan’s leading industrial electronics and automation multinationals, with an established CNC and drives division active since the 1970s. The MDS-A series is legacy / discontinued: direct manufacturer support has ended and spare parts are available exclusively as used, surplus, or through specialist repair services.
Main Technical Specifications
| Type | AC spindle drive unit (Spindle Drive Unit) |
| Part number | MDS-A-SP-110 (MDSASP110) |
| Brand | Mitsubishi Electric |
| Known application | Machining centres and turning centres with Mitsubishi CNC series M64, M65, M700 |
| Function | AC spindle motor speed and torque control; spindle orientation; rigid tapping |
| Product series | MDS-A – Motor Drive System A series (first generation) |
| Supply voltage | 3~ 200–230 V AC, 50–60 Hz (typical MDS-A series) |
| Rated output power | 11 kW (“110” power class of the MDS-A-SP series) |
| CNC interface | SSCNET – Servo System Controller NETwork (Mitsubishi proprietary optical/electrical serial) |
| Feedback | Encoder / resolver from spindle motor (Mitsubishi OSE/OSA series) |
| Connectors | Power terminal blocks L1/L2/L3, U/V/W; CN1/CN3 signal connectors; SSCNET interface connector |
| Weight | ~5–10 kg |
| Dimensions | ~150 × 330 × 250 mm W × H × D |
| Production status | Legacy / discontinued — used/surplus/repair only |
