2BK47 Pulley 1-1/8" Bore 4" Stock Bore For more information on a

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2BK47 Pulley 1-1/8" Bore 4" Stock Bore For more information on aThis 2BK47 Pulley 1 1 8" bore is directly interchangeable with other manufacturers v belt pulleys, it is 4. 45" in diameter, and is manufactured in accordance with ARPM Standard IP20 for safe operation. double BK pulleys work with belt types A, 4L, B, 5L, AX, BX, AA, BB, double banded A, double banded B, and double banded BX cogged v belts. What separates this double 2BK47 pulley from the others is that it is made using a high grade 35 cast iron, is