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-Ex10F is a high-performance explosion-proof quarter-turn electric actuator engineered by Omkee. It features a compact structure, convenient installation, outstanding reliability, and an advanced built-in Position Transmitter. While actuated via standard external switching signals, it continuously transmits a precise, isolated 4-20mA DC (or 0-10mA) analog feedback signal, making it the ideal solution for central control rooms to monitor real-time valve positions in hazardous environments.

Key Applications

Fully compliant with rigorous global explosion-proof safety standards, this series is widely utilized across diverse process automation fields:

• Petroleum, Petrochemicals, Gas Processing, and Chemical Engineering

• Power Generation (Both Hydroelectric and Thermal Power Plants)

• Water & Wastewater Treatment, Pumping Stations, and Irrigation Infrastructure

• Metallurgy, Blast Furnaces, Iron & Steel Works, and Pulp & Paper Mills

• Pharmaceuticals, Biotechnology, Food Processing, and Building Automation

Premium Component Features

1. Ruggedized ADC12 Outer Enclosure

• Material: Premium ADC12 die-cast aluminum alloy.

• Surface Treatment: Subjected to 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 industrial wear and environmental corrosion.

2. Heavy-Duty Worm Gear & Drive Shaft Assembly

• Worm Gear: Forged using a custom-proportioned aluminum-bronze alloy blank to resist high physical friction.

• Drive Shaft & Worm: Machined from premium 40Cr alloy steel, structurally enhanced through advanced quenching/tempering heat treatments, and finished with a black-oxide layer for long-term rust prevention.

• Spline Connection: Utilizes a heavy-duty spline interlocking joint between the output shaft and worm gear, eliminating mechanical snapping vulnerabilities inherent in typical unified single-piece casting shafts under fatigue.

3. Precision Hardened Reducer Gearbox

• All internal speed reduction gears are precisely milled from superior quenched and tempered structural steels, boasting tight tolerances, 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 absorb extreme physical shock loads.

• The reduction casing is cast independently from ADC12 alloy for structural alignment and vibration reduction.

4. Over-Engineered Industrial 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 nominal 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

• Sourced under strict EMQ (ZV2) low-noise guidelines reaching a P6 precision grading. Super-smooth surface processing on the raceways and rolling balls dramatically minimizes operational friction and mechanical backlash.

6. Proprietary Stroke Adjusting System

• On-site travel limit commissioning is handled via a top-accessible "Adjustment Shaft", making calibration simple, immediate, and extremely accurate.

7. Premium Imported Sealing & Lubrication

• Fluid Seals: Equipped with imported German Olborz® double-lipped skeleton TC series oil seals and structural O-rings for exceptional leakage protection.

• Lubrication: Fully packed with premium imported Mobil® industrial grease, sustaining stable viscosity across wide temperature changes.

8. Japanese SAKAE® High-Precision Potentiometer

• Integrates a genuine Japanese SAKAE® conductive plastic potentiometer (nominal resistance ~0-1000 Ω, total tolerance ±15%, independent linearity L ±0.5%, mechanical stroke 360°, electrical stroke 355° ± 5°).

• Equipped with a spring-loaded clearance cancellation mechanism that eliminates gear backlash error and ensures seamless real-time positional sampling.

9. Advanced Electronic Position Transmitter Unit

The OMK-Ex10F is equipped with a highly accurate position transmitter module optimized for remote telemetry:

• Current Absorption Technology: The output stage utilizes a current-absorbing circuit architecture, making current zero-point calibration highly stable and straightforward. Compatible with both 4-20mA and 0-10mA industrial signal regimes.

• Micro-Stroke Amplification: Features an exposed mechanical plunger/push-rod. When pressed, the displacement is scale-amplified internally by a specialized mechanism, allowing for hyper-precise measurement of small strokes under 10 mm.

• Mechanical Zero-Adjustment: Equipped with a mechanical zero-point shifting device at the rear of the plunger with a calibration range spanning several times the effective stroke. This design effectively avoids measurement drift and precision loss often seen in multi-electrode capacitive transmitters when zero-migration is excessively large.

Rigid Quality Assurance & Production Directives

• Advanced Simulation Design: Developed by senior engineers with 10+ years of industrial experience. All blueprints undergo intensive cinematic and structural stress analysis via UG software before the molds are manufactured.

• 4-Axis CNC Precision Finishing: Parts are finished on high-precision imported 4-axis machining centers utilizing fast pneumatic fixtures, with all completed batches verified via a Coordinate Measuring Machine (CMM) to guarantee compliance with tight design tolerances.

• Mandatory 5-Stage Outbound Testing: Prior to leaving the factory, every single assembled unit must successfully clear:

  1. Torque Margin Test: 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: Tested at 1500V AC for 1 minute across the motor wiring to ensure zero insulation breakdown.

  3. 48-Hour Full-Load Endurance Test: Random batch samples undergo a continuous 48-hour continuous runtime test under maximum load parameters to verify thermal and wear stability.

  4. Submersion Hermeticity Audit: Every unit is pressurized internally to 0.2 MPa via its waterproof cable glands and completely submerged in a testing tank. Zero air bubbles are permitted over an extended 10-minute audit period.

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

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.