Park Brake Levers and Cables

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Working principle of park brake lever and cable

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7/18/2019 Park Brake Levers and Cables

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PARKING BRAKE LEVERS

Orscheln hand levers are designed on the principle of variable mechanical advantage, and therefore,variable hand effort. During the initial movement of the lever from the “off” to the “on” position, there isgreat linear movement in comparison to the output effort. As the lever approaches the “on” position, theoutput effort becomes greater in comparison to the linear movement. As the lever passes over center,or toggle position, the mechanical advantage is theoretically infinite.

Orscheln hand levers also provide a screw-type adjustment feature which allows the operator to makesystem adjustments. This is accomplished by simply turning the adjustment knob on the lever handle.Orscheln’s standard levers are shown in this section. Using these standard levers where possible cangenerally provide shorter lead-times and lower costs. When custom designs are needed, we offer manyoptions and variations. The key characteristics to remember when designing a lever system includesafety, required lever output, mounting location, operator access, and handle effort. Mounting bracketdesign should be determined by travel, cable clamp pattern, and mounting preference.

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1/8” PBT BRAKE CABLES

PBT is short for Polybutylene Terephthalate: These cables utilize PET coated strand,PET liner,a patented seal with internal and external features and boundary lubrication.

All of these features combine to give Orscheln cables far better corrosion protection thanordinaly galvanized constructions. The 1/8” PET cables are designed for use in light tomedium duty applications. These cables are rated at 1,200 pounds or less.

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3/16” PBT BRAKE CABLES

3/16” PBT cables offer the same qualities as the 1/8” cables. However, thissize of cable is recommended for heavier loads up to 3,000 pounds. Many

of the characteristics described in the cable design section will help you indetermining which size of cable is right for your application.

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TRAILER PARKING BRAKE SYSTEMS

This section gives you three different layouts to choose from. By lling out and

returning the specication sheet, you are assured of receiving a trailer system

that is “custom” designed for your application. In addition, our break-away andpadlock options provide additional protection. The mechanical break-awayfeature will engage the trailer brakes automatically if the towed vehicle becomesunhooked during transportation. The lockable over-center lever prevents any

unauthorized person from moving the trailer once the system is engagedand locked.

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Orscheln Products LLC Orscheln Products LLC Orscheln EuropeSales/Customer Service 8351 County Road 245 Unit 15, Webb Ellis Industrial Park1177 N. Morley Holmesville, OH 44633-9771 Wood StreetP.O. Box 280 Phone 330-279-3711 Rugby England CV21 2NPMoberly, MO 65270 Fax 330-279-3791 Phone +44(0) 1 788 561400Phone 660 263 4377 Fax +44 (0) 1 788 567555

Orscheln Products

Fluid Level Indicators

Shift Control Systems

Park Brake Systems

Mechanical Control Cables

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