Sprocket Size: 120R30
Variable Pitch 1VP30 Pulley 1/2" is designed and engineered in a way that allows for precise adjustments in diameter
With AK series pulleys you can use A-Series v-belts
For more information on a four groove 4C105E sheave
and precision sprocket with 14 hardened teeth
BK57 Pulley 1" Bore filter_60BS28-FB Sprocket Size: 120R30This BK57 Pulley 1" bore is directly interchangeable with other manufacturers, is 5. 45" in diameter, and is manufactured in accordance with ARPM Standard IP20 for safe operation. It works with belt sizes A, 4L, B, 5L, AX, BX, AA, and BB. What separates this BK57 pulley from the others is that it is made using a high grade 35 cast iron, is phosphate coated, painted, and balanced at the factory. Using the grade 35 cast iron offers a higher tensile