OMK-160H Part-Turn Electric Actuator (Three-Phase AC Control Type)

Key Component Features & Material Engineering

1. Rugged ADC12 Aluminum Housing

The actuator enclosure is constructed from premium ADC12 die-cast aluminum. The raw metal undergoes artificial aging and shot-blasting before a thick thermo-sprayed powder coating is applied. This outer layer is thicker than 0.2 mm and safely resists constant working temperatures above 150°C without peeling or cracking.

2. High-Efficiency Motor with Heavy Torque Reserve

Heavy-duty lines often face unexpected load spikes due to pressure changes or mineral scaling. To avoid operational jams under peak pipeline stress, OMKEE motors feature a 1.3x to 1.5x torque safety reserve. Crucial parameters—including motor temperature rise curves, rotational inertia, and insulation wear—undergo strict empirical testing. This ensures the actuator can handle frequent start-stop full loads without stalling.

3. Spline Drive Connection & Forged Bronze Worm Gear

The internal worm wheel is forged from a high-strength aluminum bronze alloy, paired with a 40Cr alloy steel worm shaft that has undergone thermal tempering and black-oxide anti-rust plating.

Instead of weak, one-piece shafts that shear under intense torque loads, the OMK-160H utilizes a robust spline connection to lock the output shaft and the worm gear together. This design spreads heavy mechanical torque evenly across the joint, eliminating structural weak points at the shaft neck.

4. Precision Steel Gearbox & Low-Noise Bearings

• Premium Reduction Gears: Cut entirely from high-grade quenched and tempered steel, the gear train delivers high fatigue strength, minimal wear, and low noise. The reduction box uses cast ADC12 aluminum for stabilized power transmission.

• P6 Deep-Groove Bearings: Both ends of the gear units are held firmly 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.

• Seals & Lubrication: Every unit is filled with imported high-performance Mobil grease and protected by dual-lipped skeleton TC oil seals from the German brand Oubaisi to ensure a leak-free lifespan.

5. Quick External Stroke Calibration

The OMK-160H features an intuitive stroke limit device. Field technicians can quickly calibrate the exact open and close points via an external top adjusting shaft, making commissioning faster, simpler, and highly precise without dismantling the shell.

Design, Machining, and Quality Assurance Protocols

The OMK-160H follows a strict, closed-loop engineering process to ensure reliable performance for global buyers:

• UG Software Simulation: Experienced engineers design each part in 2D and 3D based on classical actuator theory and field usage data. Fits and stress points are verified via UG (Unigraphics) software simulation before die-cast molds are built.

• 4-Axis Machining Centers: Fine metal cutting is executed on imported, high-precision 4-axis CNC machining centers equipped with rapid pneumatic clamps. Finished parts pass a Coordinate Measuring Machine (CMM) check to ensure all dimensions meet strict engineering tolerances.

• Factory Acceptance Testing (FAT): Before leaving the facility, 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-160H complies fully with the JB/T8219-1999 manufacturing standard for industrial electric actuators, certified under test report No. C16040-WT by the Shanghai Institute of Process Automation Instrumentation. Furthermore, OMKEE facilities maintain verified compliance with ISO 9001:2008 and the European Union CE Certification, ensuring product quality fits global B2B procurement standards perfectly.

Target Applications:

• Heavy Processing: Steel manufacturing mills, ironworks, metallurgy, paper mills, and aggressive chemical processing plants.

• Energy & Utilities: Thermal power plants (steam and cooling loop systems), hydro-generation stations, and high-volume water pumping networks.

• Infrastructure: Municipal water treatment plants, industrial wastewater lines, marine shipbuilding, and large-scale power irrigation networks.

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