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OKUMA Servo Drive
Brand: OKUMA -
Code:MIV08-1-B5
| Combination name | Availability | Price |
|---|---|---|
Servo Drive Module – OKUMA MIV08-1-B5
The MIV08-1-B5 is a servo drive module (“Servo Drive Module”) manufactured by OKUMA Corporation, a component of the axis control system for OKUMA CNC machine tools equipped with the proprietary OSP (Open System Platform) numerical control. The module manages speed, torque, and position regulation for a servo axis, interfacing with the CNC via the OKUMA proprietary serial bus. The alternate part number MIV081B5 identifies the same component in the OKUMA spare parts catalogue. The component may exist in multiple hardware revisions.
The servo drive module is the core of the axis control loop for the machine’s linear or rotary axes: it converts digital commands from the CNC into motor supply current, closing the position, speed, and torque loops in real time. A failure of this module causes immediate locking of the affected axis and halts the machining cycle, rendering the machine inoperable until the component is replaced or repaired, with consequent production downtime.
OKUMA Corporation is one of Japan’s leading CNC machine tool builders, founded in 1898 in Nagoya. It is distinguished by its vertically integrated design of machines, CNC controls (OSP series), and drives — all developed and manufactured in-house. Components in the MIV series are legacy / discontinued: available only as used/surplus or through specialist repair services.
Main Technical Specifications
| Type | Servo drive module |
| Part number | MIV08-1-B5 (MIV081B5) |
| Brand | OKUMA Corporation |
| Known application | OKUMA CNC machine tools with OSP control (machining centres, lathes, grinders) |
| Function | Servo axis speed, torque and position regulation |
| Supply voltage | ~200–230 V AC three-phase |
| Rated current | ~8 A |
| Interfaces | OKUMA proprietary connectors; OSP serial bus |
| Protections | Overcurrent, overtemperature, encoder fault (typical) |
| Weight | ~1.5–3.0 kg |
| Dimensions | ~200–300 × 100–150 mm |
| Production status | Legacy / discontinued — used/surplus/repair only |
