OMK-Ex40E Intelligent Modulating Explosion-Proof Electric Actuator

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

Smart Proportional Control with Zero Oscillation: The OMK-Ex40E is the flagship intelligent modulating-type explosion-proof quarter-turn electric actuator designed for high-end process automation. Outfitted with an embedded, state-of-the-art digital servo controller, a massive 400Nm torque engine, and high-frequency thyristor outputs, it delivers a positioning precision of $\le0.5\%$, making it the absolute finest heavy-duty alternative to premium imported brands.

1. Broad Industrial Application Fields

OMKEE intelligent servo-modulating actuators are trusted worldwide to manage critical modulating valves, dampers, and fluid systems in hazardous environments:

• Oil, Gas & Chemical Refining: High-precision proportional dosing, blending loops, and automated chemical tracking.

• Power & Energy Infrastructure: Closed-loop automated flow regulation in hydroelectric and thermal power plants.

• Water Utilities & Treatment: Micro-adjustable flow control in municipal drainage and large industrial wastewater systems.

• Heavy Metallurgy: Smart, continuous flow positioning for gas and fluid lines in iron, steel, and smelting mills.

• Advanced Manufacturing: High-tier process tracking in pulp & paper mills, pharmaceutical synthesis, and food lines.

• Marine & HVAC Services: Marine engineering, automated shipbuilding, and premium safety-interlocked commercial HVAC 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 (thickness $>0.2\text{ mm}$), providing exceptional chemical barrier properties 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 ($0\text{--}1000\,\Omega$ range, total resistance tolerance $\pm15\%$, independent linearity $L\pm0.5\%$).

• 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.

3. Integrated Next-Generation Servo Controller Features

The OMK-Ex40E houses a cutting-edge built-in digital positioner and control driver delivering exceptional features:

• Digital Status Display: Features a crisp, built-in digital screen on-site that provides real-time monitoring of the actual stroke percentage (valve opening status) and active diagnostic fault codes.

• Manual/Automatic Switching: Supports immediate local manual override switching and on-site electric push-button operation.

• High-Speed Processing: Equipped with an imported ultra-fast high-speed CPU coupled with a digital-analog hybrid circuit architecture. Programming is simplified via a user-friendly menu-driven parameter configuration interface.

• Thyristor (SCR) Control Output: Replaces traditional mechanical relays with solid-state thyristor switching, resulting in zero lag, minimal lag time, and ultra-high frequency response thresholds (up to 1,200 start cycles per hour).

• Electronic Braking (Zero Oscillation): Features a proprietary electronic braking algorithm that dampens motor rotational inertia instantly, ensuring a one-time exact position lock (0 oscillation) with an adjustment positioning accuracy of $\le0.5\%$.

• Robust Signal Isolation: All input and output signaling lines feature complete photoelectric isolation. Designed with a wide power supply range tolerance to deliver excellent anti-interference characteristics when hooked up to PLC, DCS, or centralized computer control systems.

• Fully Potted & Encapsulated Electronics: The entire servo control circuit board is potted and sealed inside a protective polymer resin casing. This ensures excellent resistance to vibration, dust accumulation, thermal drift, and ambient humidity.

4. 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