75 mm x 160 mm x 37 mm 75 mm x 160 mm x 37 mm FAG 21315-E1-K + AH315G spherical roller bearings

YOU’LL FIND AN EXTENSIVE NSK bearing Trading Co., Ltd 75 mm x 160 mm x 37 mm SELECTION OF 75 mm x 160 mm x 37 mm 75 mm x 160 mm x 37 mm FAG 21315-E1-K + AH315G spherical roller bearings FOR SALE.

What is 21315-E1-K + AH315G bearing interchange？