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YT1-25ZC/4 DC Electromagnetic Thruster
Product Overview & Model Meaning What it is The YT1 series is the classic first-generation domestic electro-hydraulic thruster, integrating an AC three-phase motor, centrifugal oil pump and oil cylinder in one compact cast-iron body. It is the standard drive unit for YWZ, YWZ4 (and YWZB)...
Description
Product Overview & Model Meaning
What it is
The YT1 series is the classic first-generation domestic electro-hydraulic thruster, integrating an AC three-phase motor, centrifugal oil pump and oil cylinder in one compact cast-iron body. It is the standard drive unit for YWZ, YWZ4 (and YWZB) drum brakes, and also drives industrial valves, penstocks, swinging mechanisms and clamping devices.
The YT1-25ZC/4 is the 250-N / 40-mm / ZC-buffered member - the economical, high-frequency choice for small hoisting and conveying machinery.
Model decoding - YT1-25ZC/4
| Segment | Meaning |
|---|---|
| YT1 | Electro-hydraulic thruster, 1st-generation standard series |
| 25 | Rated thrust 25 kgf ≈ 250 N |
| ZC | Extended buffer spring (cushioned retraction, low impact) |
| /4 | Rated stroke 40 mm (not 4 seconds) |
Suffix options: E1/E2 mechanical limit switch, EB inductive limit switch, Ex = flameproof.
Z / ZB / ZC difference (critical for correct replacement): Z = no internal load spring (standard, relies on external brake spring); ZB = built-in heavy load-return spring (strong forced retraction, for lifting & wind-proof safety); ZC = built-in extended buffer spring (smooth, low-impact return, for frequent-stop & precision equipment). All three share the same 250 N / 40 mm rating - only the spring behavior differs.
Technical Specifications - YT1-25ZC/4
| Parameter | Value | Remarks |
|---|---|---|
| Rated thrust | 250 N (25 kgf) | Must be ≥ brake release force |
| Rated stroke | 40 mm | Matches brake shoe retraction |
| Motor capacity | 0.08 kW | Three-phase asynchronous |
| Rated voltage / current | AC 380 V / 0.32 A, 50 Hz | 220 / 660 / 1140 V on request |
| Action time (rise / fall) | ~0.7 s / 0.4 s | At rated voltage & oil |
| Max operating frequency | 720 cycles/h | S1 / S3 duty |
| Insulation / Protection | B-class / IP54 | Cast-iron sealed housing |
| Ambient temperature | −20 °C ~ +45 °C | Use DB-25 oil; low-temp oil for cold |
| Relative humidity | ≤ 90%, no condensation | - |
| Mounting | Vertical, push-rod up | Tilt ≤ 10°; fill oil before use |
| Weight | ~12 kg | Net |
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