61903 2RS CX, Poland - Deep groove ball bearing. Sealed on both sides. Ultra Light Metric Series. Dimensions 17x30x7 mm. Corresponds to the bearings 1000903 (ГОСТ 8338-75) and 61903-2RS (DIN625-1).

6903DDU NTN, Japan - Deep groove ball bearing. Sealed on both sides. Ultra Light Metric Series. Dimensions 17x30x7 mm. Corresponds to the bearings 1000903 (ГОСТ 8338-75) and 61903 2RS (DIN625-1).

61903-2RS VBF, China - Deep groove ball bearing. Sealed on both sides. Ultra Light Metric Series. Dimensions 17x30x7 mm. Corresponds to the bearings 1000903 (ГОСТ 8338-75) and 61903 2RS (DIN625-1).

61903-2RSR ZVL, Slovakia - Single row deep groove ball radial bearing with double-sided seal. Dimensions 17x30x7 mm. Corresponds to the bearings 61903-2RS DIN 625-1 and 1000903 GOST 7242-81.

Bearing 6903.ZZ EZO, Japan. Deep groove ball bearing. Single row. -type shields on both sides. Extra thin metric series. Dimensions (dxDxB): 17x30x7 mm. Corresponds to the USSR / CIS bearing designation - 1000903