Spur Gear; 3-1/2" Pitch Diameter; 8 DP; 1-1/2" Face Width; Rough Bore; 28 Teeth; 20 Degree Pressure Angle; Minimum Plain Bore; 1-3/4" Max Bore; 2-3/4" Hub Diameter; Steel

Roller Chain Sprocket; 12B-1 Chain; 28 Teeth; 1 Row of Teeth; No Hardened Teeth; 180.492MM Outside Diameter; 170.14MM Pitch Diameter; B-Hub One Side; Rough Bore Mount; No Bushing; 19.05MM Chain Pitch; ISO Roller Chain; No Keyway; Steel Material

Roller Chain Sprocket; 35 Chain; 28 Teeth; 1 Row of Teeth; No Hardened Teeth; 3.553" Outside Diameter; 3.349" Pitch Diameter; B-Hub One Side; Rough Bore Mount; No Bushing; 3/8" Chain Pitch; ANSI Roller Chain; No Keyway; Stainless Steel Material

Roller Chain Sprocket; 41 Chain; 28 Teeth; 1 Row of Teeth; No Hardened Teeth; 4.738" Outside Diameter; 4.465" Pitch Diameter; B-Hub One Side; Rough Bore Mount; No Bushing; 1/2" Chain Pitch; ANSI Roller Chain; No Keyway; Steel Material

Roller Chain Sprocket; 35 Chain; 28 Teeth; 1 Row of Teeth; No Hardened Teeth; 3.553" Outside Diameter; 3.349" Pitch Diameter; A-No Hub; Rough Bore Mount; No Bushing; 3/8" Chain Pitch; ANSI Roller Chain; No Keyway; Steel Material