d - 17 mm

D - 30 mm

B - 7 mm

C - 7 mm

r min. - 0,3 mm

da min. - 19 mm

da max - 19,5 mm

Da max. - 28 mm

ra max. - 0,3 mm

Weight - 0,018 Kg

Basic dynamic load rating (C) - 4,6 kN

Basic static load rating (C0) - 2,55 kN

(Grease) Lubrication Speed - 23000 r/min

(Oil) Lubrication Speed - 28000 r/min

Calculation factor (f0) - 14,7

• Model Number: 6903Z
• Inner Diameter：17mm Outer Diameter：30mm Width：7mm
• Type：Deep Groove Ball Bearings
• Update date：2025-12-17
• Application:physical instruments,insect experimental analysis instrument,plastic molding,electromagnetic clutch,Garment Accessories,knitted fabrics,Pump,wall industry,gantry processing,Hydraulic Equipment,Antenna Industry
• Similar models:FBJ 6903-2RS NSK 6903L11-H-20 CYSD 6903-ZZ KOYO 6903Z NACHI 6903-2NSE NSK 6903ZZ ISB F6903ZZ CYSD 6903NR NTN 6903NR NSK 6903VV
• BEARING POWER International Trading Co.,Ltd. specialize in 6903Z products，there is large inventory of KOYO 6903Z . We has been built up long-term cooperation with KOYO company, could make a bulk order of the 6903Z Which KOYO 6903Z is the most authentic, must choose BEARING POWER, what a whole variety, reasonable price, guaranteed quality, prompt delivery via Global express.Any inquiry, never hesitate to E-mail or call +86-022-58519721 to contact us.

• Model No.	Inner Diameter	Outer Diameter	Width	Brand	Type
  32011	55	90	23	CYSD	Tapered Roller Bearings
  420/414	40	88,5	26,988	Timken	Tapered Roller Bearings
  370A/362A	50,8	88,9	20,638	ISO	Tapered Roller Bearings
  3780/3726	50,8	95,25	30,162	ISO	Tapered Roller Bearings
  54220	103	150	72,8	CX	Thrust Ball Bearings
  63/28NKE	28	68	18	NACHI	Deep Groove Ball Bearings
  7017CDF	85	130	22	CYSD	Angular Contact Ball Bearings
  7313 BEGBY	140	65	33	SKF	Angular Contact Ball Bearings
  CX401				CX	Wheel Bearings
  FC40858S01	25	55	45	SNR	Tapered Roller Bearings
  HS7013-C-T-P4S	65	100	18	FAG	Angular Contact Ball Bearings
  K25X30X18	25	30		Timken	Needle Roller Bearings
  K17X23X17	17	23	17	ISO	Needle Roller Bearings
  NKIA 5904	20	37	23	NBS	Complex Bearings
  PCM 404430 E	40	44	30	SKF	Plain Bearings
  W 6003-2RS1/VP311	35	17	10	SKF	Deep Groove Ball Bearings
  HJ-142216-2RS			1.0000	Torrington	NEEDLE BEARINGS
  NU230	150	270	45	SKF	CYLINDRICAL ROLLER BEARINGS
  HK-6012	68		12	CONSOLIDATED	NEEDLE BEARINGS
  241/800	800	1280	475	CONSOLIDATED	SPHERICAL ROLLER BEARINGS