d - 17 mm

D - 30 mm

B - 7 mm

C - 7 mm

r min. - 0,3 mm

da min. - 19 mm

da max - 20 mm

Da max. - 28 mm

ra max. - 0,3 mm

Weight - 0,018 Kg

Basic dynamic load rating (C) - 4,65 kN

Basic static load rating (C0) - 2,58 kN

(Grease) Lubrication Speed - 22 000 r/min

(Oil) Lubrication Speed - 26 000 r/min

Calculation factor (f0) - 14,7

• Model Number:6903
• Inner Diameter：17mm Outer Diameter：30mm Width：7mm
• Type：Deep Groove Ball Bearings
• Update date：2026-01-13
• Application:Insect Count,Hydraulic Equipment,pump industry,beverage production,Forging machine,tube,hot and cold box,trolley,small appliances,miscellaneous instruments,noise reduction equipment
• Similar models:NACHI 6903N NSK 6903L11 NSK 6903N NACHI 6903 NTN 6903 NACHI 6903NR NTN 6903LLUNR FBJ 6903-2RS CYSD 6903NR PFI 6903-2RSC3
• BEARING POWER International Trading Co.,Ltd. specialize in 6903 products，there is large inventory of NTN 6903 . We has been built up long-term cooperation with NTN company, could make a bulk order of the 6903 Which NTN 6903 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
  22311CW33	55	120	43	AST	Spherical Roller Bearings
  15590/15523	28,575	60,325	19,842	CX	Tapered Roller Bearings
  30319U	95	200	49,5	NTN	Tapered Roller Bearings
  306840	180	259,5	33	KOYO	Deep Groove Ball Bearings
  51332	160	265		CX	Thrust Ball Bearings
  53236	180	250	58,2	KOYO	Thrust Ball Bearings
  7318C	90	190	43	CYSD	Angular Contact Ball Bearings
  FWF-192317	19	23		NSK	Needle Roller Bearings
  LM772748/LM772710DA+A	488,95	634,873	180,975	NTN	Tapered Roller Bearings
  K 60x68x25	60	68		NBS	Needle Roller Bearings
  RSHEY60-N	60		60	NKE	Bearing Units
  NU210	50	90	20	FBJ	Cylindrical Roller Bearings
  SC6201	310,000	429,500	60,000	NTN	Deep Groove Ball Bearings
  UCP216	80			CRAFT	Bearing Units
  697	7	17	5	ISC	DEEP GROOVE BALL BEARINGS
  MI-13-N	.8125		.7600	McGill	NEEDLE BEARINGS
  6217	150	85	28	CONSOLIDATED	DEEP GROOVE BALL BEARINGS
  N-305E	25	62	17	CONSOLIDATED	CYLINDRICAL ROLLER BEARINGS
  51236				CONSOLIDATED	THRUST BALL BEARINGS
  GEH-80ES-2RS	80	130	75	CONSOLIDATED	SPHERICAL PLAIN BEARINGS