Key Component Features & Material Engineering

1. Rugged Enclosure (ADC12 Die-Cast Aluminum)

The housing is constructed from heavy-duty ADC12 die-cast aluminum, treated with artificial aging and shot-blasting processes. It features an advanced thermo-sprayed powder coating with a thickness greater than 0.2 mm. This durable shell easily withstands continuous temperatures above 150°C without degradation.

2. High-Torque Motor with Heavy Safety Reserve

To handle erratic pipeline loads caused by fluid viscosity or system pressure surges, OMKEE engines the OMK-20C 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

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-20C 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.

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.

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

• 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-20C 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.

Overall Dimensions and Performance Parameters

Parameter\Performance

OMK-20

OMK-40

OMK-60

DC24V

AC110V

AC220V

AC380V

DC24V

AC110V

AC220V

AC380V

DC24V

AC110V

AC220V

AC380V

Motor Power

35W

40W

40W

30W

70W

90W

90W

40W

70W

90W

90W

40W

Rated Current

3.57A

0.65A

0.37A

0.15A

5.13A

1.12A

0.57A

0.29A

5.13A

1.18A

0.60A

0.29A

Standard Time/Torque

30S/200Nm

30S/400Nm

45S/600Nm

Optional Time / Torque

15S/100Nm

6S/150Nm 15S/200Nm

60S/400Nm

Turning Angle

0~90° Adjustable

Total Weight (kg)

8.0

8.5

9.0

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-20C 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 Certification, making this product completely ready for direct export into world markets.

Target Applications:

• Heavy Processing: Petroleum refineries, aggressive chemical processing, steel manufacturing mills, 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).