They are spring set and electro-magnetically released
Recommended Lubrication: Klubersynth UH1 6-460
Click here for spec sheets: SUCTFL Spec Sheet
Provides torque transmission & alignment
KWY/Setscrew/Other: No KWY or Setscrew
YK100B Cast Iron Spur Gear 1/4" ID They are spring set andBoston Gear spur gears are designed to transmit motion and power between parallel shafts. The different styles offered include spur, gear rack, pinion wire, stem pinions, and internal gears, and most come with a selection of bore diameters, keyways, and setscrews to accommodate a wide variety of application requirements. They are available in plastic, non metallic, brass, steel, and cast iron and are manufactured in a variety of styles, including