OMK-Ex20G 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 db IIB T4 Gb | IP68 Ingress Protection

Engineered for High Reliability: The OMK series explosion-proof quarter-turn electric actuator is recognized for its highly compact structure, ease of installation, outstanding craftsmanship, and premium field reliability. It is engineered to perform stably under the most severe industrial environments and serve as a reliable premium alternative to high-end imported brands.

[1] Industrial Application Fields

OMKEE explosion-proof electric actuators are widely integrated into safety-critical and automated flow control systems across international industries:

• Oil & Gas / Chemical Processing: Refining, petrochemical plants, and hazardous fluid pipelines.

• Power Generation: Hydroelectric power plants and thermal power facilities.

• Water Utilities & Infrastructure: Industrial wastewater treatment, water purification, drainage, and power-driven agricultural irrigation.

• Heavy Metallurgy: Iron and steel manufacturing, metallurgical smelting, and casting lines.

• Specialized Manufacturing: Pulp & paper mills, pharmaceutical synthesis, food and beverage processing.

• Marine & Automation: Marine engineering, shipbuilding, and commercial building automation systems.

[2] Premium Component Features

• Heavy-Duty ADC12 Enclosure: The housing is manufactured from premium ADC12 die-cast aluminum, subjected to strict artificial aging, shot blasting, and high-adherence electrostatic powder coating. The coating thickness exceeds 0.2 mm and exhibits an impressive temperature resistance of over 150°C.

• High-Torque Worm Gear Mechanism: The copper worm gear is forged from a custom-proportioned aluminum-bronze alloy blank and CNC-machined to exact tolerances. Both the output shaft and the worm are crafted from heavy-duty 40Cr alloy steel, fully heat-treated (quenched and tempered), and finished with a black-oxide coating for superior corrosion resistance. The output shaft and worm gear utilize a robust spline connection, preventing the common twisting or snapping defects seen in integrated single-piece shaft structures.

• Precision Quenched Reduction Box: All reduction gears are precision-machined from high-quality tempered steel, boasting high accuracy, exceptional load capacity, low running noise, high fatigue limits, and superior wear resistance. Both ends of the gear shafts are firmly held by precision deep-groove ball bearings to cushion massive operational impacts. The reduction casing is die-cast from ADC12 aluminum for premium structural integrity.

• Industrial DC Motor: Tailored specifically for complex industrial duty cycles and demanding site configurations. The motor is engineered to handle 1.3x to 1.5x its rated torque. Critical parameters such as temperature rise, rotational inertia, and dielectric strength are meticulously optimized and lab-tested to guarantee continuous, frequent start-ups under full or overloaded conditions.

• P6-Grade Low-Noise Bearings: All internal bearings feature tight clearance, low noise, and high precision, rigorously meeting the EMQ (ZV2) low-noise standard and P6 precision grade. This is achieved through ultra-smooth raceway and ball textures, strict sphericity guidelines, and highly optimized cage configurations.

• Proprietary Stroke Limit Device: Features an independently developed, highly reliable stroke control device. Opening and closing stroke limits are adjusted rapidly and accurately via a top-mounted "Adjustment Shaft", significantly simplifying field commissioning.

• Premium Sealing & Lubrication: The actuator utilizes authentic imported German Obos dual-lip skeleton TC oil seals and premium O-rings for exceptional water/dust isolation. The interior is pre-lubricated for life with authentic imported Mobil industrial grease.

[3] Engineering Layout & 100% Quality Assurance (QA)

• UG Digital Simulation: All components are engineered by specialists with over 10 years of experience in valve automation. Designs are validated via detailed 2D/3D modeling and UG software simulation before mold casting execution.

• 4-Axis CNC Precision Machining: Enclosures and vital structural pieces are processed on imported high-precision 4-axis machining centers utilizing high-efficiency pneumatic fixtures to achieve strict geometric tolerances.

• Coordinate Measuring Machine (CMM): Post-machining dimensions are fully verified via high-precision CMM testing to align perfectly with target engineering tolerances.

• 5-Stage Factory Test Protocol (100% Inspected before Delivery):

  1. Torque Verification: Every completed unit is torque-tested under both nominal and negative voltage conditions to verify a stable 1.3x torque safety margin.

  2. Dielectric/Insulation Test: Every unit is subjected to a 1500V high-voltage insulation test for 1 minute on the motor leads without any trace of insulation breakdown.

  3. Batch Load Testing: Regular batch sampling subjects actuators to continuous full-load operating tests for 48 hours to verify extreme operational endurance.

  4. Pressurized Submersion Leak Test: Every single actuator is submerged in water and pressurized to 0.2 MPa internally through its waterproof cable gland. A strict 10-minute hold with zero air bubbles certifies a flawless hermetic seal.

  5. Final Quality Audit: Certified QA inspectors complete a comprehensive aesthetic, mechanical, and electronic review of each unit prior to issuing the final factory release stamp.

Why Choose OMKEE? > If you have lost confidence in standard domestic electric actuators, OMKEE offers an elite tier of reliability. Our meticulous raw material choices, component standards, and rigorous 5-stage testing workflows comfortably match or exceed major joint-venture and premium imported Japanese brands. Order an evaluation sample today to experience precision automation firsthand.