_Smartflow / Mold Limit Switches


THINSWITCH® Limit Switch
Verify ejector plate return before closing the mold. Mount inside ejector housing and wire to machine controls. Use for core slides or any place where space is limited.

Features and Benefits :

  • Prevents costly mold damage
  • Small size - 2.15" L x 1.5" W x 0.18" thick
  • Fits behind ejector plate
  • Requires only 2 screw holes
  • Very economical to install
  • Ten million cycle mechanical life
  • Adjustable operating point
  • Electrical capacity at 250V AC
    5 Amps Resistive, 4 Amps Inductive
  • SPDT
  • 6' wire leads stripped and tinned
  • Optional high temperature model- up to 250 Degrees F.
  • U.S. Patent No. 5,446,252






SMARTLOCK® Slide Retainer & Limit Switch
SMARTFLOW® SMARTLOCK® slide retainer and limit switch is designed for injection molders to provide switching plus slide retaining in one unique package. The SMARTLOCK® locking function prevents premature slide movement during molded part ejection while the SPDT switch is simultaneously actuated. The SMARTLOCK® slide retainer and limit switch has been tested for reliability over 10 million cycles without failure. Two or more switches may be used for larger molds, or molds with multiple slides. Increased safety and prevention of mold damage result when the SMARTLOCK® slide retainer and limit switch is installed in a mold. A capture screw holds the plunger in place.

Features and Benefits :

  • New capture screw prevents plunger loss.
  • Over 10 million cycle life provides long dependable service.
  • 27 pounds holding force: adjustable for optimum operation.
  • 175 degrees F (79.4 degrees C) standard temperature rating allows installation into most molding applications.
  • 250 degrees F (121 degrees C) high temperature unit provides additional application flexibility.
  • Superior flush mount switch shielded from damage by mounting inside a protective milled pocket.
  • Stripped and tinned 6 ft. wire leads make the switch ready to install without modification.
  • Included mounting screws and wire clips help install the SMARTLOCK® switch neatly and easily.
  • U.S. Patent No. 6,126,429


Mode of Operation
Installed in the slide, the plunger moves into a recess in the locking plate of the switch assembly, which is installed in the mold plate. The switch actuator, located in the bottom of the recess, closes the normally open switch contacts when the plunger is seated in the locking plate recess. When the break away force is applied to the slide, the lock is released, and the switch returns to its normal state.





VERSASWITCH Limit Switch

Features and Benefits :

  • Prevents costly mold damage
  • Fits behind core
  • Simply screw into 5/8 - 24 UNEF mounting hole
  • Very economical to install
  • One million cycle mechanical life
  • Adjustable operating point
  • Electrical capacity at 240V AC
    5 Amps Resistive, 3 Amps Inductive
  • SPDT
  • 6' wire leads stripped and tinned