OMK-Ex40G DC24V Low-Voltage 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

Safe, Heavy-Duty Low-Voltage Automation: The OMK-Ex40G is a heavy-duty, explosion-proof quarter-turn electric actuator specifically designed for industrial environments requiring safe DC24V operation. Driven by an advanced DC polarity reversal circuit and a high-torque 400Nm gear engine, this unit delivers uncompromising reliability, precision, and discrete end-of-travel position tracking for hazardous industrial systems.

1. Broad Industrial Application Fields

OMKEE low-voltage DC explosion-proof actuators are widely deployed across safety-critical fluid networks, mobile industrial applications, and backup automated systems:

• Oil, Gas & Chemical Processing: Safe low-voltage control lines, field blending systems, and hazardous fuel transport pipelines.

• Power & Energy Infrastructure: Isolation and distribution lines in hydroelectric and thermal power plants.

• Water Utilities & Treatment: Heavy-duty control valves in municipal drainage, pumping stations, and industrial wastewater treatment.

• Heavy Metallurgy: Position tracking and control drives for dampers and valves in iron, steel, and smelting mills.

• Specialized Production: Advanced automated fluid control in pulp & paper, pharmaceutical processing, and food lines.

• Marine & Off-Grid Infrastructure: Automated marine valve positioning, shipbuilding systems, mobile fluid transport vehicles, and emergency 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 (thickness $>0.2\text{ mm}$), ensuring excellent chemical resistance and complete 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 DC 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.

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):

  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: Tested at an extra-high voltage of 1500V applied to the motor leads for 1 minute without any trace of insulation breakdown.

  3. Batch Endurance Testing: Regular random batch sampling subjects units 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 for 10 minutes. A total absence of 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.