Performance Parameters Type Power	OMK-EX10
		DC24V	AC110V	AC24V	AC380V	AC220V
	Motor Power	25W	25W	25W	15W	25W
	Rated Current	2.03A	0.57A	2.12A	0.10A	0.32A
	Optional Time / Torque	30S/100NM
	Turning Angle	15S/50NM 20S/70NM			60S/100NM
	Total Weight (kg)	0~360 Adjustable
	Cold Insulation Resistance(M Ω)	5.5
	Voltage-Withstand Class	AC110V/220V/380V : 100MΩ/500VDC
	Protection Class	AC110V/220V : 1500VAC one minute, AC380V : 1800VAC one minute
	Explosive proof grade	IP67
	Installation Angle	ExdIIBT4 Gb
	Electric Interface	One G1/2 Water-proof Cable Connector (For types with 4-20mA DC, etc. control signals , add one more)
	Ambient Temperature (℃)	-30℃ ~ +60℃
	Type of Control Circuit	One G1/2 Water-proof Cable Connector（For types with 4-20mA DC, etc. control signals , add one more）
	Options of other function	Type A:Ordinal switch type; Type B:Passive signal feedback type; Type C:Resistance signal feedback type:Type D: Resistance signal and passivesignal feedback type: Type E:Adjusting type: Type F: With positiontransmitter; Type G: DC current control type: Type H: AC 380V power control type
	Options of other function

Brand: Omkee (Wuhan, China)

Product Overview

The OMK-Ex10D is a premium-tier explosion-proof quarter-turn electric actuator engineered by Omkee. It features a compact structure, convenient installation, outstanding reliability, and an advanced Dual-Feedback Control System (continuous potentiometer resistance paired with passive dry contacts). This model is custom-built to deliver steady real-time data logging and high-precision valve automation in harsh and hazardous industrial environments.

Key Applications

Designed to comply with rigorous global explosion-proof parameters, our actuators are trusted across a wide spectrum of automated operations:

• Energy & Power: Petroleum, Petrochemicals, Gas Processing, Chemical Engineering, and Power Generation (Hydroelectric & Thermal Power).

• Heavy Industries: Metallurgy, Blast Furnaces, Iron & Steel Works, Pulp & Paper Manufacturing.

• Water Management: Water & Wastewater Treatment, Pumping Stations, and Agricultural Power Irrigation.

• Specialized Processing: Pharmaceuticals, Food & Beverage Processing, Marine Engineering, Shipbuilding, and Building Automation.

Premium Component Features

1. Ruggedized ADC12 Outer Enclosure

• The primary housing is cast from high-grade ADC12 aluminum alloy.

• It undergoes artificial aging, shot blasting, and an advanced electrostatic powder coating process. The finish features a thickness exceeding 0.2 mm with a thermal threshold capable of resisting temperatures up to 150°C, providing exceptional durability against environmental corrosion.

2. Heavy-Duty Worm Gear & Drive Shaft Assembly

• Worm Gear: Forged using a custom-formulated aluminum-bronze alloy blank and precision-machined.

• Drive Shaft & Worm: Machined from premium 40Cr alloy steel, structurally enhanced through quenching/tempering heat treatments, and finished with a black-oxide anti-rust coating.

• Spline Connection: The output shaft pairs with the worm gear using a heavy-duty spline connection. This eliminates the mechanical twisting or snapping vulnerabilities common to low-grade unified cast-shaft structures.

3. Precision Hardened Reducer Gearbox

• All speed reduction gears are precisely milled from superior quenched and tempered structural steels, boasting high accuracy, high strength, low noise, and deep resistance to fatigue and abrasive wear.

• Both ends of the gear trains are firmly anchored by high-precision deep-groove ball bearings to mitigate running noise and withstand immense mechanical shock loads.

• The reduction casing is die-cast from ADC12 alloy to maintain rigid gear alignment and smooth torque conversion.

4. Over-Engineered Industrial Electric Motor

• To comfortably accommodate fluctuating industrial voltage supplies and demanding modulation tolerances, the electric motor is engineered to supply a safety margin of 1.3 to 1.5 times the rated torque.

• Critical parameters—including internal temperature rise, rotor moment of inertia, and insulation dielectric strength—are optimized and validated through rigorous testing to guarantee frequent start-ups under full-load or overload spikes.

5. High-Grade Ultra-Quiet P6 Bearings

• All internal bearings are compliant with the EMQ (ZV2) premium low-noise guidelines, achieving a standardized P6 precision grading with minimal mechanical clearance.

• The ultra-low vibrational footprint is guaranteed by specialized mirror-smooth grinding profiles on both the raceways and rolling elements, alongside optimized retainer designs.

6. Proprietary Stroke Adjusting System

• The OMK series utilizes an in-house developed dual-limit stroke control mechanism. On-site technical calibration is executed via an intuitive, top-accessible "Adjustment Shaft", rendering stroke commissioning rapid, straightforward, and highly accurate.

7. Premium Imported Sealing and Mobil Lubrication

• Fluid Seals: Double-lipped skeleton TC series oil seals and structural O-rings are exclusively imported from the acclaimed German Olborz® brand for superior leakage protection.

• Lubrication: Fully packed with premium imported Mobil® industrial grease, sustaining stable viscosity and minimal drag across multi-year duty lifecycles.

8. Advanced Dual Feedback: Japanese SAKAE® Potentiometer & Limit Switches

• Features a genuine SAKAE® conductive plastic potentiometer imported from Japan, ensuring highly stable position sensing and an extended functional lifecycle.

• Potentiometer Technical Metrics: Nominal resistance range: 0 to 1000 Ω | Total Resistance Tolerance: ±15% | Independent Linearity Error: L ±0.5% | Mechanical Rotation: 360° | Active Electrical Stroke: 355° ± 5°.

• Backlash Elimination: Equipped with a proprietary spring-loaded clearance cancellation mechanism that actively eliminates gear backlash error and minimizes spatial hysteresis, facilitating fluid, continuous real-time data logging.

• Dual-Feedback Integration: In addition to the continuous resistance signal tracking exact position, it simultaneously outputs a set of passive dry contact signals corresponding to fully open and fully closed positions for robust system communication.

Rigid Quality Assurance & Production Directives

• Advanced CAD/CAE Modeling: All components are engineered by design specialists with over 10 years of experience in valve control mechanics. Detailed 2D blueprints and comprehensive 3D layouts are run through exhaustive simulations within UG software prior to tooling approval.

• 4-Axis CNC Precision Finishing: Component machining is executed via imported high-performance 4-axis machining centers utilizing quick-acting, high-efficiency pneumatic clamping fixtures. Post-machined surfaces are subjected to full dimensional validation via a Coordinate Measuring Machine (CMM) to ensure compliance with tight engineering tolerances.

• Mandatory 5-Stage Outbound Testing: Prior to packaging and shipment, every individual unit must successfully clear:

  1. Torque Verification: Tested under nominal and negative line voltages to confirm a mandatory structural torque margin of at least 1.3 times the rated threshold.

  2. High-Potential Dielectric Isolation: High-voltage insulation testing at 1500V AC for a full 1 minute across the motor wiring with zero dielectric breakdown.

  3. Continuous Full-Load Endurance: Random batch units are subject to continuous operational load profiling for a prolonged 48-hour continuous runtime window to confirm absolute thermal and wear stability.

  4. 0.2 MPa Submersion Hermeticity Audit: Every unit is pressurized internally to 0.2 MPa via its waterproof cable gland and completely submerged in water. Zero air bubbles are permitted over a 1-minute period.

  5. Final Quality Inspection: A dedicated QA team performs a comprehensive visual and functional check on every unit prior to factory clearance.

Global Certifications

Our production facility is certified under the international ISO9001:2008 Quality Management System and complies with the European Union CE Standards, fully meeting international export quality criteria.