OMK-Ex40C Potentiometer Feedback Explosion-Proof Electric Actuator
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Performance
Parameter Type |
OMK-Ex20 | OMK-Ex30 | OMK-Ex40 | OMK-Ex60 | |||||||||||||
| DC24V | AC110V | AC220V | AC380V | DC24V | AC110V | AC220V | AC380V | DC24V | AC110V | AC220V | AC380V | DC24V | AC110V | AC220V | AC380V | |||
| Motor Power | 35W | 40W | 40W | 30W | 50W | 40W | 40W | 30W | 70W | 90W | 90W | 40W | 70W | 90W | 90W | 40W | ||
| Rated Current | 3.57A | 0.65A | 0.37A | 0.15A | 4.62A | 0.65A | 0.37A | 0.15A | 5.13A | 1.12A | 0.57A | 0.29A | 5.13A | 1.18A | 0.60A | 0.29A | ||
| Standard Time/Torque | 25S/200NM | 30S/300NM | 30S/400NM | 45S/600NM | ||||||||||||||
| Optional Time / Torque | 15S/100NM | 6S/80NM | 15S/200NM | 60S/400NM | ||||||||||||||
| Turning Angle | 0~90° Adjustable | |||||||||||||||||
| Total Weight (kg) | 10.0Kg | 10.0Kg | 10.5Kg | 10.5Kg | ||||||||||||||
| Cold Insulation Resistance(MΩ) | AC | |||||||||||||||||
Brand: OMKEE (Wuhan Omkee)
Certifications: ISO9001:2008 | CE Standard | Ex d IIB T4 Gb | IP68 Ingress Protection
Precision Real-Time Position Tracking: The OMK-Ex40C is a heavy-duty, explosion-proof quarter-turn electric actuator designed for applications requiring absolute reliability and direct position telemetry via resistance feedback. Featuring a robust 400Nm torque threshold and an advanced Japanese potentiometer assembly, it is engineered to serve as a premium, long-lasting alternative to elite imported brands in hazardous automated areas.
1. Broad Industrial Application Fields
OMKEE high-precision resistance-feedback actuators are widely integrated into automated process control and safety systems across severe environments:
Oil, Gas & Chemical Processing: Refining lines, chemical dosing, and hazardous fluid transport telemetry.
Power & Energy Infrastructure: Flow positioning in hydroelectric power stations and thermal power generation.
Water Utilities & Treatment: Remote valve positioning in municipal drainage and heavy-load industrial wastewater facilities.
Heavy Metallurgy: Position tracking for valves and dampers in iron, steel, and smelting mills.
Specialized Manufacturing: Precision fluid controls in pulp & paper processing, pharmaceutical synthesis, and food lines.
Marine & HVAC Services: Marine engineering, automated shipbuilding, and premium commercial building automation.
2. Premium Component Engineering
Advanced Multi-Treated Enclosure
Material: Heavy-duty ADC12 die-cast aluminum.
Upgraded Surface Treatment: Subjected to rigorous artificial aging, shot blasting, vacuum impregnation (sealing), and surface oxidation.
Premium Finishing: Coated with authentic AkzoNobel (阿克苏) electrostatic powder. The coating thickness exceeds 0.2 mm and delivers excellent weatherability and thermal stability at temperatures above 150°C.
High-Torque Worm Gear System
Worm Gear: Forged from a custom-proportioned aluminum-bronze alloy blank and CNC-machined to exact tolerances.
Worm & Output Shaft: Precision-machined from heavy-duty 40Cr alloy steel, fully heat-treated, and finished with a black-oxide layer for superior rust prevention.
Spline Connection: Shaft and gear are joined via a heavy-duty spline layout, eliminating the structural weak points and shaft snapping defects common in traditional integrated single-piece shafts.
Precision Quenched Gearbox
All internal reduction gears are precision-machined from high-quality tempered steel, offering exceptional strength, low running noise, high fatigue limits, and superior wear resistance.
Both ends of the reduction shafts are anchored by precision deep-groove ball bearings to absorb heavy operational impacts. The reduction housing is die-cast from ADC12 aluminum for maximum structural alignment.
Industrial-Grade Motor
Engineered to handle complex industrial duty cycles and high-torque demands. The motor handles 1.3x to 1.5x its rated torque.
Critical parameters—such as temperature rise, rotational inertia, and insulation voltage resistance—are optimized and lab-tested to guarantee continuous, frequent start-ups under full or overloaded capacities.
P6-Grade Low-Noise Bearings
Internal bearings feature tight clearance, low noise, and high running accuracy, strictly matching the EMQ (ZV2) low-noise standard and a P6 precision rating.
This is achieved through specialized super-finishing of the raceways, enhanced ball sphericity, and optimized cage configurations.
Japanese Sakae Precision Potentiometer
Outfitted with an imported Japanese Sakae conductive plastic potentiometer ($0\text{--}1000\,\Omega$ or $500\,\Omega$ options, total resistance tolerance $\pm15\%$, independent linearity $L\pm0.5\%$, mechanical stroke $360^\circ$, electrical stroke $355^\circ\pm5^\circ$).
Features a unique spring-loaded backlash elimination mechanism to erase gear transmission play. This minimizes actuator hysteresis, guarantees continuous real-time sampling, and significantly increases final valve positioning accuracy.
Advanced Stroke Limit Control
Features an independently developed, user-friendly stroke control device. Operational calibration and field adjustment are easily executed through the convenient top "Adjustment Shaft," simplifying field commissioning.
Premium Seals & Lubrication
Outfitted with imported German Obos (欧博斯) dual-lip skeleton TC oil seals and premium O-rings for exceptional fluid exclusion.
The internal gearbox is pre-lubricated for life with authentic imported Mobil industrial-grade grease.
3. Engineering Layout & 100% Quality Assurance (QA)
UG Digital Simulation: Designed by senior valve automation specialists with over 10 years of experience. Structures undergo comprehensive 2D/3D modeling and advanced UG software simulation before die-casting mold approval.
4-Axis CNC Precision Machining: Vital components are processed on imported high-precision 4-axis machining centers utilizing high-efficiency pneumatic fixtures to eliminate alignment errors.
Coordinate Measuring Machine (CMM): Post-machining dimensions are fully verified via high-precision CMM testing to align perfectly with target engineering tolerances.
The 5-Stage Factory Testing Protocol (100% Inspection):
Torque Verification: Every completed unit is torque-tested under both nominal and negative voltage conditions to verify a stable 1.3x torque safety margin.
Dielectric/Insulation Test: Tested at an extra-high voltage of 1500V (for AC110V/220V systems) or 1800V (for AC380V systems) applied to the motor leads for 1 minute without any trace of insulation breakdown.
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Batch Endurance Testing: Regular random batch sampling subjects units to continuous full-load operating tests for 48 hours to verify extreme operational endurance.
