D4N-8D20R

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Snap Action, Limit Switches – D4N-8D20R application field and working principle

Snap action, limit switches are robust devices in mechanical engineering and electrical engineering that, among other things, can be used to monitor the exact position and movement of certain parts. D4N-8D20R series limit switches are high performance and reliable limit switches for a wide range of industrial automation applications.

Application Fields of D4N-8D20R

• Laser cutting machines
• Machine tool
• Material handling systems
• Industrial automation applications

D4N-8D20R is a series of miniature snap action, limit switches. The basic models of the series are provided with a wide variety of switching elements to choose from, such as type 2, type 3 and adjustable roller lever. Its slim design is ideal for space-constrained installations where other switches would be too bulky.

Working Principle of D4N-8D20R

The D4N-8D20R series are characterized by a hermetically-sealed operating head. The housing gives the switch its surround protection. When an operator rotates the operating head it selectively opens or closes switch contacts resulting in a switch transition from the open to closed state or from the closed to open state.The operating head features an adjustable angle depending on the contact\'s requirements.

The body of the limit switch is equipped with a plunger-type actuator and a lateral roller lever. The plunger-type actuator guides the clearance of the roller lever to ensure limited contact against the plunger’s button. The plunger actuator is adjustable in 3 positions and allows a free movement of the contact. The use of a long roller lever arm provides a uniform actuated movement along the contact arm.

The housing of the D4N-8D20R can be made from a range of materials, such as plastic, aluminium or stainless steel, depending on the application requirements. It is designed for use in a variety of environmental conditions and temperature points including extreme temperatures. The D4N-8D20R also offers excellent shock and acceleration resistance ensuring its reliability over a long period of time.

Conclusion

In short, the D4N-8D20R limit switch series is a simple and reliable device that is specifically designed to be used in a wide range of applications, such as laser cutting machines, machine tools and material handling systems. It offers hermetic sealing, adjustable angle, adjustable plungers, and superior shock and acceleration resistance. Moreover, its installation design makes it suitable for space-constrained environments.

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