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OKUMA Servo Drive
Brand: OKUMA -
Cat: Servo Drive
Code:MIV05A-1-B5
| Combination name | Availability | Price |
|---|---|---|
Axis Servo Drive – OKUMA MIV05A-1-B5
The MIV05A-1-B5 is an AC axis servo drive (“Axis Servo Drive” / “Motor Inverter”) manufactured by OKUMA Corporation, a core component of the OSP (Open System Platform) CNC control system. The drive manages the current and speed regulation loops of the AC servo motor on the machine axis, receiving position commands from the CNC via OKUMA’s proprietary bus and returning position and speed feedback. The commercial part number is MIV05A-1-B5 (internal reference: MIV05A1B5); the “MIV” designation identifies the Motor Inverter family within the OKUMA range.
The axis servo drive is the power and regulation module that converts CNC position and speed commands into current delivered to the AC axis motor: it closes the current and speed feedback loops, ensuring precise positioning and dynamic response during machining. A failure in this component makes the corresponding axis uncontrollable: the machine halts with an alarm and production cannot resume until the drive is replaced or repaired.
OKUMA Corporation is a Japanese manufacturer founded in 1898, one of the world’s leading producers of CNC machine tools; it operates a vertically integrated model, designing in-house both the machines and the OSP controls, drives and motors. Products in the MIV series belong to earlier generations of OSP controls and are considered legacy / discontinued: sourcing is exclusively through used/surplus channels or specialist repair services.
Main Technical Specifications
| Type | AC axis servo drive – Motor Inverter |
| Part number | MIV05A-1-B5 (MIV05A1B5) |
| Brand | OKUMA Corporation |
| Known application | OKUMA CNC machining centres and lathes with OSP control (OSP5000 / OSP7000 series) |
| Function | Axis servo motor current and speed regulation (X, Y, Z or auxiliary axes) |
| Supply voltage | 200–230 V AC three-phase |
| Rated current | ~5 A rated |
| Communication bus | OKUMA / OSP proprietary bus |
| Interfaces / connectors | OKUMA proprietary multi-pin connectors |
| Weight | ~1.5–3.0 kg |
| Dimensions | ~240×80×170 mm |
| Production status | Legacy / discontinued — used / surplus / repair only |
