Explosion-Proof Engineering & Safety

The OMK-Ex05A is built to contain internal ignition and prevent heat transfer to the surrounding hazardous atmosphere, satisfying the Ex db IIB T4 GB requirements.

• Flameproof Enclosure: The casing is cast from high-strength ADC12 die-cast aluminum, designed to withstand the pressure of an internal explosion without allowing the flame to propagate to the outside.

• Surface Treatment: After precision casting, the housing undergoes artificial aging and shot-blasting, followed by a thick thermo-sprayed plastic coating (>0.2mm) that withstands temperatures above 150°C and resists chemical degradation.

• Rigorous Testing: Every unit must undergo a mandatory high-voltage dielectric test (1500V/1min for 110V/220V; 1800V/1min for 380V) and a submersion pressure test (0.2 MPa air pressure) to ensure the integrity of the enclosure and cable seals.

Overall Dimensions and Performance Parameters

High-Precision Mechanical Design

Despite its compact size, the OMK-Ex05A utilizes professional-grade components to ensure long-term reliability in industrial settings:

• Spline-Connected Output: To eliminate the tendency for one-piece shaft assemblies to snap under rotational shocks, OMKEE utilizes a 40Cr alloy steel worm shaft and output shaft, connected via a high-strength spline joint. This design ensures even distribution of mechanical stress.

• Precision Gearbox: All internal reduction gears are cut from high-grade quenched and tempered steel. The gears are held in place by P6-grade deep-groove ball bearings (EMQ/ZV2 standard), ensuring minimal vibration and silent operation.

• Sealing & Lubrication: The unit is permanently lubricated with imported Mobil grease and protected by dual-lipped skeleton TC oil seals from Oubaisi (Germany), preventing any leakage of grease or ingress of contaminants.

Operational Control and Feedback

• Active Contact Feedback: The OMK-Ex05A is designed for clear status monitoring. It provides an active (powered) electrical signal indicating the fully open and fully closed positions, allowing control systems to instantly verify valve state.

• Stroke Calibration: Maintenance is simplified by the proprietary top-mounted adjustment shaft, allowing technicians to set limit positions quickly and precisely without opening the hazardous-environment-rated main housing.

Manufacturing & Quality Assurance

Every OMK-Ex05A unit is the result of rigorous manufacturing protocols:

1. Engineering & Simulation: Design components are modeled in 2D/3D and stress-tested using UG software before any molds are created.

2. Precision Machining: Components are machined on imported 4-axis CNC centers and verified on Coordinate Measuring Machines (CMM) for tolerances.

3. Mandatory Factory Testing:

   • Torque Test: Verified to maintain a 1.3x torque safety margin under both rated and under-voltage conditions.

   • Load Test: Random batch samples are subjected to a 48-hour continuous load trial to confirm mechanical and thermal endurance.

This product maintains ISO 9001:2008 quality management certification and meets CE standards, making it suitable for global trade and deployment in professional industrial B2B environments.