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June 2023

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Overload Safety Devices for Corrosive and Washdown Applications
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Overload Safety Devices for Corrosive and Washdown Applications

Zero-Max Torq-Tender (L) and H-TLC (R) Overload Safety Devices offer options for use in corrosive and washdown applications. These overload devices are available with optional features to handle specific protection requirements.

Zero-Max Overload Safety Devices protect motor and drive systems from overload while offering options to withstand corrosive environments and necessary washdowns. These options provide protection from direct water spray, washdown chemicals, detergents, chemical exposure and debris.

These Overload Safety Devices are suited for applications ranging from food processing, packaging, commercial dishwashers, industrial parts washers and any applications with similar challenging operating conditions.

Providing both torque limiting and coupling functions in a compact design, these Zero-Max Overload Safety Devices can operate as a coupling and an overload safety device connecting two inline shafts in a power transmission system. Power Take-Off models are also available for use with chain or belt drives. These Overload Safety Devices protect motor and drive systems from excessive overloading and potentially expensive system jam ups, especially after factoring in for equipment repairs, product loss and any downtime incurred resulting from a jam up. They also offer easy re-engagement, allowing the system to be running again as quickly as possible.

Torq-Tender, H-TLC Models Available with Options

Standard Torq-Tender Overload Safety Devices have precision machined steel bodies with standard black oxide exteriors.

Enhancement options for washdown and corrosion protection include:

  • Nickel plated exterior with stainless steel hardware for a moderate level of protection. High-phosphorous nickel plating can withstand washdown chemical exposure without staining or discoloration.
  • Stainless steel exterior and stainless steel hardware components for a higher level of protection. The grade of stainless can be selected based on the protection level needed. Stainless steel springs can be substituted internally where needed.
  • O-ring seals added to seal between the driver and driven halves of the Torq-Tender provide added protection from exposure to water, chemicals or debris.
  • Lubrication options include Food Grade Grease and/or Dry Lube coating where needed. Special greases are available for specific application requirements.

Standard H-TLC Overload Safety Devices have a robust composite body with plated hardware components that provide protection for most applications.

Enhancement options for washdown and corrosion protection include:

  • Stainless steel exterior hardware components for a higher level of protection.
  • Stainless steel springs can be substituted internally where needed.
  • Food Grade Grease available where needed. The H-TLC can also operate without grease in certain applications due to its robust composite construction.

Additional important overload safety device options:

  • Both Torq-Tender and H-TLC models are available in a variety of mounting configurations, including use as a coupling model or as a power take-off model for use with chain or belt drives.
  • Actuating Pin or Actuating Disc options are available for interfacing with a limit switch, proximity switch or other sensing device to signal that an overload is occurring, or to shut down the drive motor when an overload occurs. This automated shut-down prevents excess wear on the machine's driveline components.

For more information contact:

Zero-Max, Inc.

13200 Sixth Avenue North

Plymouth, MN 55441-5509

800-533-1731 / 763-546-4300

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