Japanese NTN V Groove Ball Bearing 6304 Z 6304 ZZ 1.Single box 2.Competitive Price, ... -Germany, carbon steel, iron. 4) Shield / Closure: Plain (Open), Z, ZZ, RS, 2RS, 2ZR, 2Z. 5) Vibration and Noisy level ... relations of cooperation. Deep groove ball bearing (ZZ, 2RS ,Z ,RS)604 series605 606 607 608 609623 series623 624 625 ... 6417 6418 6419 6420 6422 6426 Single seals Z Deep Groove Bearing 6304 ...