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OKUMA Power Supply
Brand: OKUMA -
Cat: Power Supply
Code:E0451-521-094
| Combination name | Availability | Price |
|---|---|---|
CNC Power Supply Unit – OKUMA E0451-521-094
The E0451-521-094 is a switching power supply for CNC control systems (“CNC Control Power Supply Unit”) manufactured by OKUMA Corporation, designed to supply the electronic boards of the OKUMA OSP (Open System Platform) CNC controller. The unit converts mains voltage into stabilised DC voltages (+5 V, ±12 V / ±15 V, +24 V DC typical) required by the logic boards, I/O modules and axis drives of the control system. The part number E0451-521-094 belongs to the E04 series of OKUMA electronic spare parts, used on machines equipped with OSP-5000, OSP-7000 and later generation controllers.
The power supply is at the heart of the CNC control’s power distribution: without stable, noise-free voltages, the CPU boards, axis drives and I/O modules cannot operate correctly. A power supply failure causes immediate machine shutdown, undervoltage alarms, random controller resets or corrupted memory data — prompt replacement is essential to restore production and prevent secondary damage to the powered boards.
OKUMA Corporation is a Japanese machine tool manufacturer founded in 1898 in Nagoya; it is one of the few manufacturers worldwide to design both machine tools (machining centres, lathes, grinders) and the proprietary CNC controller (OSP – Open System Platform series) entirely in-house. Spare parts in the E04xx series refer to machines of the OSP-5000/7000 generation and later; older components are legacy / discontinued and available only as used, surplus or through specialist repair.
Main Technical Specifications
| Type | CNC switching power supply (CNC Control Power Supply Unit) |
| Part number | E0451-521-094 (E0451521094) |
| Brand | OKUMA Corporation |
| Known application | OKUMA OSP CNC controller (OSP-5000, OSP-7000 and later); OKUMA machining centres, lathes and grinders |
| Function | Conversion and distribution of stabilised DC voltages to CNC control boards |
| Input voltage | 100–240 V AC single-phase or three-phase |
| Main output voltages | +5 V, ±12 V / ±15 V, +24 V DC |
| Rated power | ~100–300 W |
| Interfaces / connectors | Dedicated OKUMA connectors (rack/backplane or edge connectors to control boards) |
| Weight | ~1.0–3.0 kg |
| Dimensions | ~150–300 mm |
| Production status | Legacy / discontinued — used/surplus/repair only |
