Description
Description:
The D633-455B—Moog’s flagship Direct-Drive Servo Valve—transforms a 40 l/min spool into a sub-millisecond motion sculptor for 2,500-ton plastic injection clamps and 80 m/s wire-drawing lines. Armed with a permanent-magnet linear force motor and on-board 24 V electronics, this ISO 4401-03 titan shrugs off 350 bar shocks while holding ±0.2 % repeatability—turning “almost perfect” into “repeatably perfect” every cycle.
Application Scenarios:
Friday rush in a Shanghai EV-battery gigapress: a 3,800-ton die drifts 0.4 mm under 180 °C oil, birthing €34,000 of cracked housings per shift. Night crew swaps in the D633-455B during dinner break. Integrated LVDT locks spool to command in 2.8 ms; clamp-force ripple drops from 2.8 % to 0.19 %. The pain point—thermal null shift—vanishes as the valve’s DSP auto-zeros every 50 ms, gifting the line 1,200 flawless trays and €2.1 M quarterly savings.
Parameter:
| Main Parameters | Value/Description |
|---|---|
| Product Model | D633-455B |
| Manufacturer | Moog Inc. |
| Product Category | Direct-Drive Servo Valve (DDV) with OBE |
| Rated Flow | 40 l/min @ 35 bar Δp – fills a 200 cm³ mold cavity in 0.3 s |
| Max Operating Pressure | 350 bar (P, A, B); 50 bar (T) – survives extrusion bursts |
| Hysteresis | < 0.2 % – laser-grade consistency |
| Frequency Response (-90°) | 110 Hz – outdances any pilot-stage valve |
| Supply Voltage | 24 VDC ±10 % – draws 1.1 A like a tablet |
| Command Signal | ±10 V differential – plug-and-play with every PLC |
| Dimensions (L×W×H) | 185 × 46 × 80 mm – hides in Size 03 manifolds |
| Weight | 2.1 kg – featherweight for a heavyweight |
| Fluid Temperature | –20 °C to +80 °C – Arctic startups, desert shutdowns |
| Protection Class | IP65 (connector mated) – coolant-proof warrior |
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