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-Ex10C is a premium-tier explosion-proof quarter-turn electric actuator engineered by Omkee. Featuring a compact layout, seamless installation, outstanding reliability, and an integrated high-precision potentiometer system, this model is custom-built to deliver steady, continuous positional feedback and precise valve control in harsh and hazardous industrial environments.

Key Applications

Designed to comply with rigorous explosion-proof parameters, our actuators are heavily trusted in both heavy-duty and automated operations including:

• Petroleum, Petrochemicals, and Natural Gas Processing

• Chemical Engineering and Refining

• Power Plants (Both Hydroelectric and Thermal Power Systems)

• Water Treatment, Wastewater Management, and Agricultural Irrigation

• Metallurgy, Blast Furnaces, Iron & Steel Works

• Pulp & Paper Production, Pharmaceuticals, and Food/Beverage Processing

• Marine Engineering, Commercial Shipbuilding, and Building Automation Systems

Engineering & Component Excellence

1. Ruggedized ADC12 Outer Enclosure

The primary housing is cast from high-grade ADC12 aluminum alloy. It undergoes thorough artificial aging, shot blasting, and an advanced electrostatic powder coating process. The resulting finish features a coating layer thickness exceeding 0.2 mm with a thermal threshold capable of resisting temperatures up to 150°C, providing exceptional durability against industrial wear and environmental corrosion.

2. Heavy-Duty Worm Gear & Drive Shaft Assembly

The copper worm gear is forged using an alloyed aluminum-bronze formula carefully proportioned for optimal resilience. The integrated output shaft and worm drive are machined from premium 40Cr alloy steel, structurally enhanced through quenching and tempering heat treatments, and protected via a black-oxide anti-rust coating. The output shaft pairs with the worm gear using a heavy-duty spline connection, preventing the mechanical twisting or snapping vulnerabilities common to low-grade unified cast-shaft structures.

3. Precision Hardened Reducer Gearbox

All internal speed reduction gears are precisely milled from superior quenched and tempered structural steels, boasting tight tolerances, excellent load capability, reduced running noise, and deep resistance to fatigue and abrasive wear. The rotating ends of the reduction gear trains are firmly anchored by high-accuracy deep-groove ball bearings to mitigate running noise and withstand immense mechanical shock loads. The reduction casing is cast independently 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 operational dynamics—including internal temperature limits, rotor moment of inertia, and insulation breakdown thresholds—have been meticulously engineered and validated through thousands of laboratory cycles, empowering the actuator to perform high-frequency cycling even under peak full-load or momentary overload spikes.

5. High-Grade Ultra-Quiet P6 Bearings

All internal bearings are sourced under strict 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 inner/outer raceways and the rolling elements, alongside precision-molded retainers.

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. Real-Time Feedback Integration: Japanese SAKAE® Potentiometer

The OMK-Ex10C features a genuine SAKAE® conductive plastic potentiometer imported directly from Japan, ensuring highly stable position sensing and an extended functional lifecycle. It operates with a nominal total resistance range of roughly 0 to 1000 Ω (with standard options for 1KΩ or 5KΩ networks).

• Technical Metrics: Total Resistance Tolerance: ±15% | Independent Linearity Error: L ±0.5% | Total Mechanical Rotation: 360° | Total Active Electrical Stroke: 355° ± 5°.

• Backlash Elimination: The potentiometer assembly integrates a proprietary spring-loaded clearance cancellation mechanism. This specialized layout actively eliminates gear backlash error and minimizes spatial hysteresis, facilitating fluid, continuous real-time data logging and significantly boosting final valve positioning accuracy.

Rigid Quality Assurance & Production Directives

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

2. 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 all features comply with rigorous design tolerances.

3. Mandatory 5-Stage Factory Outbound Testing: Prior to packaging and shipment, every individual unit must successfully clear 4 severe localized tests and 1 final rigorous quality audit:

   • 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.

   • High-Potential Dielectric Isolation: High-voltage insulation testing at 1500V AC across any terminal lead for a full 60 seconds with zero dielectric degradation.

   • 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.

   • 0.2 MPa Submersion Hermeticity Audit: Every unit is pressurized internally to 0.2 MPa via its waterproof entry joint and completely submerged in a testing tank. Zero air bubbles are permitted over a 1-minute period.

   • Final OQC Gate: A dedicated Outgoing Quality Control inspector manually verifies physical build, functionality, and documentation tags before issuing final 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 rigorous global market export criteria.