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 - 0,017 Kg

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

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

(Grease) Lubrication Speed - 15 000 r/min

Calculation factor (f0) - 14,7

• Model Number:6903DDU
• Inner Diameter：17mm Outer Diameter：30mm Width：7mm
• Type：Deep Groove Ball Bearings
• Update date：2025-12-18
• Application:E Beauty,Storage Tool,aerial work equipment,wall industry,electrocardiograph,Microwave Equipment,Textile Industry Accessories and Accessories,sleep monitoring,surgical instruments,Pneumatic Actuator,training beds etc
• Similar models:NTN 6903 ISB F6903ZZ KOYO 6903 ISB F6903 CYSD 6903-2RS NACHI 6903-2NKE CYSD 6903-RS ZEN P6903-GB NACHI 6903ZZE NACHI 6903ZENR
• BEARING POWER International Trading Co.,Ltd. specialize in 6903DDU products，there is large inventory of NSK 6903DDU . We has been built up long-term cooperation with NSK company, could make a bulk order of the 6903DDU Which NSK 6903DDU 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
  126	6	19	6	NSK	Self-Aligning Ball Bearings
  170RF30	170	243		Timken	Cylindrical Roller Bearings
  22316EX	80	170	58	NACHI	Cylindrical Roller Bearings
  22211	55	100	25	FBJ	Spherical Roller Bearings
  24140-E1-K30	200	340	140	FAG	Spherical Roller Bearings
  25577/25520	42,875	82,931	23,812	FBJ	Tapered Roller Bearings
  2879/2820	31,75	73,025	22,225	ISO	Tapered Roller Bearings
  5S-7012UADG/GNP42	60	95	18	NTN	Angular Contact Ball Bearings
  6205-2RSL	52	25	15	SKF	Deep Groove Ball Bearings
  63/32N	32	75	20	KOYO	Deep Groove Ball Bearings
  GBR 648032 UU	101,6	127	50,8	IKO	Needle Roller Bearings
  IJ123095				ILJIN	Angular Contact Ball Bearings
  LM3720	32	47	20,3	NSK	Needle Roller Bearings
  PHU5041	39,7	105,8	93,3	PFI	Angular Contact Ball Bearings
  RIF-618ZZ	3,175	9,525	3,571	NMB	Deep Groove Ball Bearings
  RTL9	25,4	50,013	15,875	INA	Thrust Roller Bearings
  VEX 15 /NS 7CE3	15	32	9	SNFA	Angular Contact Ball Bearings
  UKIP213+H2313	60		90	NACHI	Bearing Units
  Z-531163.04.DRGL	300	780	258	FAG	Spherical Roller Bearings
  7317WNSU	85	180	41	FAF	ANGULAR CONTACT BALL BEARINGS