Boston 30224784 31018 180-2 O/L STEEL ROLLER CHAIN PART

Boston 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 plain, web, web with lightening holes, and web with spokes. Many are available with or without hubs. Boston Gear manufactures both 14 1/2° and 20° PA, involute, full-depth system gears. While 20° PA is generally recognized as having a higher load-carrying capacity, 14 1/2° PA gears are used extensively because of lower backlash and smoother, quieter operation. Just ask your CSR which is best for you. And remember that spur gears and rack are available via our Guaranteed Same Day Shipment Program.Product FamilySpur GearsDiametrical Pitch20Product DescriptionSpur Gear, 20 DP, 14 1/2 PA, 180 Teeth, Cast IronAltra Master No.30215986Pressure Angle14-1/2 Degree Pressure AngleMaterialCast IronBore Size0.500UPC781711102404Face Width0.375Family Id30,088Weight2.501KeywayNo KWY or SetscrewPitch Diameter9.000Outside Diameter9.170Unit Of MeasureEnglishNo Of Teeth180Hub Diameter1.500Setscrew OtherNo SetscrewTorque Rating178 @ 300 RPM MAX