Safety Switch Probe Sensing Device

Black & Webster Protectoswitch safety switch

The Black & Webster/Air-Hydraulics Protectoswitch is an ideal way to protect your operators from pinch point accidents.

When the operator closes a hand or foot switch to activate the machine, the Protectoswitch intercepts the start signal and automatically drops a probe around the work area. If an obstruction is sensed the machine will not fire until the obstruction is removed. If the work area is free of obstructions, the probe falls to its full stroke which closes an actuating switch to fire the machine.

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SAF-3/93 Protectoswitch

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Simplicity of design is the key to providing years of maintenance-free operation. Available in both electromechanical and pneumatic versions to eliminate interface problems and allow ease of installation.

Readily installed on all Black & Webster/Air-Hydraulics equipment or that of other manufacturers.

The Protectoswitch is supplied with a straight 24" long aluminum probe that must be shaped to the configuration of both the lower and upper tooling. Plastic sleeves are available in 1 1/2" and 2 1/4" and 3" diameters for adapting to the end of the probe.

Sequence of Operation

Upon activation the air cylinder retracts, the probe arm falls to the work area where the shaft carriage meets the sensing collar causing a pneumatic signal to fire the machine. The start valve must be released and the prove returned to the up position before subsequent operation is permitted.


Safety Switch Probe Sensing Device Specs

Dimensions & Specifications

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  • Pneumatic operation, air requirement 50 - 100 psi
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  • Adjustable stroke, 2" max.
  • Cycles per minute, 80 max
  • Housing dimensions 9 3/8" H x 4 5/8" W x 2 1/2" D
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  • Weight, 5 lbs.
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