Key Component Features & Material Engineering

1. Ultra-Protected ADC12 Aluminum Enclosure

To survive the most punishing outdoor processing environments, the housing is constructed from premium ADC12 die-cast aluminum. The raw casting undergoes an extensive surface treatment regimen: artificial aging, shot-blasting, liquid impregnation (impregnation sealing), and surface oxidation.

It is finished with a premium thermo-sprayed AkzoNobel powder coating thicker than 0.2 mm that safely withstands temperatures above 150°C, preventing peeling, blistering, or corrosion under aggressive chemical vapors or continuous outdoor weathering.

2. High-Torque Motor with 1.5x Torque Safety Reserve

To handle erratic pipeline loads caused by fluid viscosity, fluid velocity, or high working system pressures, OMKEE engines the OMK-250C motor with a 1.3x to 1.5x torque safety reserve. Crucial parameters—such as motor temperature rise curves, rotational inertia, and insulation strength—are strictly tested. This design ensures the actuator can handle frequent start-stop cycles, even under full or overloaded conditions.

3. Spline Joint and Forged Worm Gear Drive

Managing 2500 Nm of torque requires an uncompromised drive joint. The inner copper worm wheel is forged from a high-performance aluminum bronze alloy, paired with a 40Cr alloy steel worm shaft that has undergone thermal tempering and black-oxide anti-rust plating.

Instead of fragile one-piece structures that snap under sudden rotational shocks, the OMK-250C relies on a high-strength spline connection to lock the output shaft and the worm gear together. This setup spreads heavy mechanical torque evenly across the joint, protecting the assembly from stress failure at the shaft neck.

4. Precision Gearbox & Low-Noise P6 Bearings

• Premium Reduction Gears: All reduction gears are precision-cut from high-grade quenched and tempered steel, yielding high fatigue resistance, minimal wear, and low operating noise. The reduction box uses cast ADC12 aluminum for stabilized power transmission.

• P6-Class Bearings: Both ends of the gear units are supported by P6-grade deep-groove ball bearings built to the strict EMQ (ZV2) standard. This controls internal vibration and resists sudden load shocks by focusing on optimal raceway surface roughness, ring roundness, and correct retainer design.

• Lubrication & Seals: Features imported premium Mobil grease and authentic twin-lipped skeleton TC oil seals from the German brand Oubaisi to prevent any grease leakage.

5. Intuitive External Stroke Limits

The OMK-250C uses a proprietary stroke adjustment mechanism. Field technicians can adjust the open and close limits directly using the external top adjusting shaft, making commissioning fast, safe, and precise without needing to open the primary housing.

Design, Machining, and Quality Assurance Protocols

The OMK-250C is built using a strict, closed-loop production system that matches international export standards:

• UG Software Simulation: Experienced engineers design every part in 2D and 3D based on classical actuator theory and field usage data. We verify structural fits and stress limits using UG (Unigraphics) software simulation before making the die-cast molds.

• 4-Axis Machining Centers: Fine metal machining is executed on high-precision, imported 4-axis CNC machining centers equipped with rapid pneumatic fixtures. Finished parts are measured on a Coordinate Measuring Machine (CMM) to guarantee all dimensions line up perfectly with design specifications.

• Factory Acceptance Testing (FAT): Before shipment, 100% of production units must pass a mandatory multi-stage inspection sequence.

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

Global Compliance and Applications

The OMK-250C complies fully with the JB/T8219-1999 manufacturing standard for industrial electric actuators, officially certified under test report No. C16040-WT by the Shanghai Institute of Process Automation Instrumentation. Furthermore, OMKEE manufacturing plants maintain verified compliance with ISO 9001:2008 and the European Union CE & RoHS Certification, making this product completely ready for direct export into world markets.

Target Applications:

• Heavy Processing: Petroleum refineries, aggressive chemical processing, steel manufacturing mills, ironworks, metallurgy, and paper mills.

• Energy Systems: Thermal power plants (steam turbine speed control loops) and hydro-generation stations.

• Infrastructure: Municipal water treatment plants, automated sewage networks, marine shipbuilding, and large-scale power irrigation networks.

• Light Industrial: Food processing lines, pharmaceutical cleanrooms, and automated HVAC/Building Automation Systems (BAS).