The TB21H100 is an imperial H-pitch taper lock timing pulley featuring 21 teeth for a 1-inch (25.4 mm) wide belt. It uses a 1210 taper lock bush, has an outside diameter of 83.52 mm, a pitch circle diameter of 84.89 mm, and a total pulley width of 32.0 mm.Pulley Specifications
- Number of teeth: 21
- Belt pitch: H type (1/2 inch / 12.70 mm)
- Belt width compatibility: 1.000 inch (25.40 mm)
- Outside diameter (OD): 83.52 mm
- Pitch circle diameter (PCD): 84.89 mm