Variable Pitch 1VP40 Pulley 7/8" is designed and engineered in a way that allows for precise adjustments in diameter
which insures proper contact between the #160 roller chain and sprocket which prevents premature wear or breakage
140R25H Sprocket Dimensions
Something else that is notable about this 160B18 sprocket is that it fully meets all ANSI Standards
1TB74 Sheave single-groove 7.75" OD 08B Stainless Steel Hollow Pin Roller Chain Variable Pitch 1VP40 Pulley 7/8"This 1TB74 Pulley uses a P1 Series Bushing, is directly interchangeable with other manufacturers, is 7. 75" in diameter, and is manufactured in accordance with ARPM Standard for safe operation. With B series TB pulleys you can use A, 4L, B, 5L, AX, BX, AA, and BB belts. What separates this 1TB74 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