Description
Introduction of Basic Multi-revolution Electric Actuators BD350-C8
Basic Multi-revolution Electric Actuators offer maximum power for heaviest-duty applications. Specifically, BD350-C8 delivers top-level torque for large multi-turn valve control. Furthermore, it adopts an ultra-robust structure for extreme working environments. In addition, the unit supports standard flange connections for fast installation. Most importantly, BD350-C8 ensures stable performance under long-time heavy load conditions.
Moreover, a double sealing design provides high-grade environmental protection. As a result, the actuator works well outdoors and in harsh industrial sites. Additionally, it combines electric automatic control and manual operation for enhanced flexibility. Notably, BD350-C8 includes complete safety protection for reliable daily running.
Furthermore, BD350-C8 maintains consistent performance under high stress and vibration. Specifically, its structure resists corrosion, impact, and harsh weather effectively. Consequently, users can complete commissioning and adjustment easily on site. In turn, the actuator provides accurate and repeatable valve positioning. Ultimately, BD350-C8 becomes an ideal solution for critical heavy-duty control tasks.
Multi-Turn Basic-Type Electric Actuators BD350-C8 Series Properties
- Power Supply: Three-phase: 380Vac±10%, 50Hz±2% ; Single-phase: Corresponding parameters per Table 3-1; Special power: Specify when ordering
- Input Signal: No proportional control function; For on-off control scenarios only
- Output Signal: 2 groups of limit contacts (open/close direction); 2 groups of over-torque contacts; Opening indicator signal (optional 4~20mA)
- Output Contact Capacity: 250Vac/5A (both limit and over-torque contacts)
- Output Current Load Impedance: ≤750Ω (for optional 4~20mA position feedback)
- Protection Level: IP67 (standard); IP68 (optional)
- Ambient Temperature Range: -30℃～+70℃
- Operation Mode: Intermittent duty; Working frequency ≤60 times/hour; Continuous working time ≤15 minutes; Duty cycle ≤33.3%
- Lubrication: Advanced grease
- Installation: Mounting flange conforms to JB2920-81 or ISO5210:2017 (GB/T12222-2023); Custom non-standard flanges available per client specifications
- Cable Connection: Junction box has 3 threaded holes with plugs; 1×M27x2, 2×M20x1.5 (BD05 model);
- Cable diameter: 13-18mm (1 pc), 9-14mm (2 pcs); Explosion-proof variants require explosion-proof cable entry devices.
| Speed (rpm) | 12 | 24 | 36 | 48 | 72 | 96 | 144 | Weight（Kg） | |
| Rated Totque(N.m) | Three Phases | 3500 | 3500*** | 3000 | 2500** | 2000 | 1800** | 1500 | 140 |
| Motor Power(KW) | Three Phases | 4 | 7 | 7 | 7 | 8.3* | 11* | 11* | |
| Stick current (A) | Three Phases | 66.19 | 108 | 108 | 108 | 181.75 | 245 | 245 | |
| Rated current (A) | Three Phases | 12 | 20 | 20 | 20 | 36 | 48 | 48 | |
What Is a Field-Adjustable Opening Indicator
A field-adjustable opening indicator monitors Basic Multi-revolution Electric Actuators BD350-C8 valve position visually. Specifically, it consists of reduction gears, a position dial, and a clear pointer. As it operates, the assembly rotates synchronously with the actuator’s output shaft. In addition, users calibrate it to match valve full open and full close strokes.Furthermore, this indicator shows real-time opening percentage clearly on site. Meanwhile, it integrates a potentiometer to send 4–20mA remote feedback signals. During commissioning, operators adjust gears for accurate alignment. Therefore, BD350-C8’s opening indicator ensures reliable position display.Moreover, the indicator uses stable mechanical parts for long service life. Even with fluctuations, it keeps accurate readings under temperature and humidity changes. In turn, clear markings allow quick and easy observation. At the same time, the unit supports both local inspection and remote monitoring. Ultimately, it provides essential position data for safe and smooth operation.Travel Control Mechanism Overview
A travel control mechanism manages Basic Multi-revolution Electric Actuators BD350-C8 rotation range precisely. Specifically, it uses gear trains, cams, and microswitches to limit operating strokes. As the actuator runs, cams reach preset positions and trigger switches. This action cuts motor power and stops movement at exact endpoints.In addition, the mechanism prevents over-travel and protects key internal components. Meanwhile, users adjust shafts to set accurate open and close positions. As a result, BD350-C8’s travel control ensures repeatable and stable valve positioning. Overall, it forms a critical safety function for heavy-duty operation.Furthermore, a reliable mechanical structure ensures high durability and stability. Consequently, the system works steadily with low failure rates. Even under harsh conditions, settings remain stable under harsh site conditions. In turn, BD350-C8 offers simple and safe adjustment for different valves. Ultimately, it supports consistent automatic control in demanding applications.
