Product Overview & Core Applications

The OMK-160F Electric Actuator manufactured by OMKEE (Wuhan Omkee Autocontrol Technology Co., Ltd.) represents the pinnacle of premium-tier valve automation. Engineered for high reliability, precision modulation, and outstanding mechanical durability, the OMK series features an ultra-compact mechanical footprint alongside highly optimized structural components designed to withstand severe industrial process demands.

Owing to its robust construction and high positioning accuracy, this quarter-turn intelligent drive is heavily relied upon globally across diverse heavy-industrial sectors, providing automated flow containment and precise process control.

Primary Application Fields:

• Energy & Power Generation: Hydroelectric plants, thermal power stations, boiler feeds, and steam piping isolation systems.

• Heavy Metallurgy & Infrastructure: Steel mills, metallurgical processing, blast furnace water lines, and rolling mill automation.

• Chemical, Oil & Gas: Petrochemical refining, aggressive chemical media transportation, and polymer processing lines.

• Water & Marine Utilities: Municipal wastewater plants, industrial water treatment, maritime shipboard valves, and high-volume agricultural drainage/irrigation systems.

• Process Automation: Pulp & paper mills, pharmaceutical synthesis plants, hygienic food & beverage processing, and intelligent building HVAC/automation systems.

Overall Dimensions and Performance Parameters

	OMK-100/160/250
	Parameter\Performance	OMK-100 (AC110V)	OMK-100 (AC220V)	OMK-100 (AC380V)	OMK-160 (AC110V)	OMK-160 (AC220V)	OMK-160 (AC380V)	OMK-250 (AC110V)	OMK-250 (AC220V)	OMK-250 (AC380V)
	Motor Power	120W	120W	90W	140W	140W	100W	140W	140W	100W
	Rated Current	1.93A	0.94A	0.44A	1.75A	0.96A	0.46A	1.75A	0.98A	0.48A
	Standard Time/Torque	30S/1000Nm	30S/1000Nm	30S/1000Nm	45S/1600Nm	45S/1600Nm	45S/1600Nm	75S/2500Nm	75S/2500Nm	75S/2500Nm
	Optional Time / Torque	15S/500NM	15S/500NM	15S/500NM	-	-	-	-	-	-
	Turning Angle	0~90° Adjustable	0~90° Adjustable	0~90° Adjustable	0~90° Adjustable	0~90° Adjustable	0~90° Adjustable	0~90° Adjustable	0~90° Adjustable	0~90° Adjustable
	Total Weight (kg)	17.0	17.0	17.0	18.0	18.0	18.0	18.0	18.0	18.0
	Cold Insulation Resistance (MΩ)	AC110V/220V/380V: 100 MΩ/500VDC
	Voltage-Withstand Class	AC110V/220V: 1500VAC one minute, AC380V: 1800VAC one minute
	Protection Class	Ip67
	Installation Angle	360° at any angle
	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	Type A:Ordinal switch type; Type B:Passive signal feedback type; Type C:Resistance signal feedback type; Type D:Resistance signal and passive signal feedback type; Type E: Adjusting type; Type F: With position transmitter; Type G: DC current control type; Type H: AC 380V power control type
	Options of other function	★ Stainless steel support, coupling ★Direct installation board, coupling (ISO5211 Standard) ★Over torque protector ★Heater for eliminating moisture

Comprehensive Mechanical & Material Analysis

Every component within the OMK-160F has been developed through exhaustive field-data compilation to eliminate typical failure points seen in standard valve actuators.

(1) Enclosure & Housing Architecture (ADC12 Grade)

The core structural frame is pressure-molded from specialized ADC12 grade die-cast aluminum alloy. Following the casting process, the enclosures undergo precise artificial aging, thermal stabilizing treatment, and intense shot-peening to relieve localized stress. The exterior is finished with a thermosetting electrostatically sprayed plastic powder coat exceeding 0.2 mm in thickness. This structural coating maintains total integrity under continuous thermal environments up to 150°C, providing exceptional resistance to chemical splashes, humidity, and atmospheric corrosion.

(2) Heavy-Duty Worm Gear & Drive Shaft Assembly

The primary reduction stage incorporates a high-load worm gear crafted from forged aluminum bronze alloy blanks, precision cut to exact design profiles. The accompanying output drive shafts and worm screws are machined from high-strength 40Cr alloy steel, subjected to structural hardening and tempering, and finished with a dark black oxide anti-rust coating.

Crucially, the internal output shaft connects to the worm gear via a highly reliable involute spline joint. This layout eliminates the structural vulnerabilities of traditional single-piece cast components, preventing rotational shear and structural fracture under sudden torque surges.

(3) Precision Reduction Gearbox

All auxiliary reduction gears are precision cut from high-grade, quenched and tempered alloy steels. The teeth profiles are optimized for exceptionally high precision, high load capacity, ultra-low operating noise, and fatigue resistance. To guarantee gear alignment under intense continuous torque shocks, both ends of the reduction shafts are supported by P6-class precision deep groove ball bearings. The gear transmission box is cast from robust ADC12 alloy, keeping gear meshes stable and minimizing drivetrain vibration.

(4) Purpose-Built Industrial Electric Motor

To cope with high duty cycles and variable torque loads in heavy industrial environments, OMK-160F electric motors are custom-engineered to deliver 1.3–1.5× the nominal rated torque output. Thermal rise thresholds, rotational inertia, and insulation breakdown strengths have been aggressively optimized and field-tested, allowing the actuator to run frequently, smoothly, and reliably at full load or short-term overloads without experiencing thermal trip cycles.

(5) Ultra-Low Noise EMQ Bearings (P6 Grade)

Every rolling element utilized adheres strictly to the elite Electric Motor Quality (EMQ) standards: EMQ (ZV2) Grade with a geometric tolerance classification meeting P6 accuracy parameters. This remarkably low vibration level is achieved via meticulous micro-finishing of the inner and outer raceway tracks, strict sphericity/roundness controls of the steel balls, and specialized non-resonating polyamide cage assemblies.

(6) Advanced Travel & Stroke Limit Control

The actuator incorporates a proprietary mechanical stroke-limiting assembly developed in-house. Users can effortlessly adjust the microswitch trip parameters via an accessible top-mounted "Adjustment Shaft". This design makes field calibration simple, fast, and highly accurate.

(7) Premium Material Integration: Seals & Lubricants

• High-Performance Sealing: Equipped with imported, authentic German "Obers" double-lip skeleton TC oil seals and premium nitrile O-rings, preserving the internal IP68 environmental enclosure integrity.

• Advanced Tribology Lubrication: Factory-packed with premium imported "Mobil" industrial synthetic grease, guaranteeing stable fluid film lubrication across a wide temperature spectrum without oil separation or degradation.

(8) Precision Feedback System (Japanese Sakae Potentiometer)

Integrates a high-precision conductive plastic potentiometer imported from Japan's "Sakae" brand.

• Nominal Resistance: ~ 0–1000 Ω

• Total Tolerance Profile: ±15%

• Independent Linearity Metric: L ±0.5%

• Mechanical Stroke: 360° | Electrical Stroke: 355° ±5°

• Anti-Backlash Innovation: The potentiometer carrier features a unique anti-backlash spring mechanism that cancels out backlash from gear clearance, allowing for smooth, real-time sampling and excellent positioning repeatability.

(9) Intelligent Electronic Position Transmitter Node

The integrated position transmitter card features a dynamic current-sink circuit on its output stage, making current zero-point calibration highly user-friendly. It natively supports dual industrial transmission standards: 4–20mA and 0–10mA loops.

The module features an exposed linear push-rod mechanism; when compressed, a built-in displacement magnification assembly scales up internal capacitive plate movement by several orders of magnitude. This mechanical scaling enables highly accurate measurements of micro-strokes under 10mm. Furthermore, the rear of the push-rod includes a mechanical zero-calibration system with an adjustment band spanning multiple times the effective travel. This design successfully bypasses the zero-drift limitations commonly found in multi-electrode capacitive transmitters, keeping readings accurate even during significant zero-point offsets.