EATON E50DR1 Limit Switch Contact Assembly

Description

EATON E50DR1 Limit Switch Contact Assembly

The Eaton Cutler-Hammer E50DR1 is a heavy-duty Limit Switch Operating Head. It is part of the modular E50 Heavy-Duty Plug-In series, widely considered an industry standard for rugged reliability in the most demanding industrial automation and machinery environments.

Product Detailed Description

The E50DR1 is the operating head only and does not include the switch body or receptacle. It features a Top Push Roller design, meaning it is actuated by a linear mechanical force pushing down on the roller. Because the E50 series is modular, this head can be easily combined with various E50 switch bodies (containing the electrical contacts) and wiring receptacles to create a complete limit switch assembly.

Technical Parameters

Product Advantages

• Modular Versatility: The plug-in design allows the head to be swapped out or replaced in seconds without disconnecting any of the field wiring from the receptacle, minimizing machine downtime.
• Extreme Durability: Constructed from rugged die-cast zinc, it is highly resistant to physical impacts, mechanical wear, and harsh industrial abuse.
• Superior Sealing: When properly mated to an E50 switch body, it forms an oil-tight, water-tight, and dust-tight seal (NEMA 4X/6P), making it suitable for washdown environments or outdoor use.
• Smooth Actuation: The integrated steel roller reduces friction and wear on both the limit switch and the mechanical cam or target striking it.

Important Considerations & Precautions

• Component Component Only: Remember that the E50DR1 is only the mechanical head. For a functioning switch, you must purchase or pair it with an E50 Switch Body (e.g., E50SB) and an E50 Receptacle (e.g., E50RA).
• Actuation Angle: The mechanical cam or target striking the top roller should approach from a proper angle (typically perpendicular to the roller axle) to prevent side-loading, which can bend or prematurely wear out the plunger.
• Overtravel Limits: Do not exceed the maximum specified overtravel during machine setup, as excessive mechanical force can crack or destroy the internal spring mechanisms.

Product Applications

The E50DR1 top push roller head is ideal for applications involving linear, reciprocating, or passing mechanical motion:

• Conveyor Systems: Detecting the height, alignment, or arrival of heavy pallets and containers.
• Machine Tools: Monitoring the precise travel limits of CNC axes, cutting heads, or protective safety guards.
• Automotive Assembly: Tracking the position of heavy overhead carriers or indexing tables.
• Material Handling: End-of-travel limit detection for small hoists, cranes, or automated storage and retrieval systems (ASRS).

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