... and maintains a module (K type)2, the outer ring with double lock circle of needle bearing (NA type, NKI type, RNA ... type, NK type)3 and outer raised edge with double single needle bearing (NA type, NKI type, RNA type, NK ... edge with double double row needle bearing (NA type, type, RNA)5, stamping outer ring needle bearing (HK type, BK type) NEEDLE ROLLER BEARINGSSERIESINNER ...