a spring loaded pressure plate (magnet armature) presses against the rotating discs
Many are available with or without hubs
Straight/Spiral Tooth: Straight Tooth
Click here for spec sheet: SAFL Spec Sheet
the brake will immediately set and hold
NB192 Cast Iron Spur Gear 1-1/2" Tube a spring loaded pressure plateBoston 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