d - 17 mm

D - 30 mm

B - 7 mm

d₁ - - 21 mm

D₂ - - 27.8 mm

r_1,2 - min. - 0.3 mm

d_a - min. - 19 mm

D_a - max. - 28.5 mm

r_a - max. - 0.3 mm

Basic dynamic load rating - C - 4 kN

Basic static load rating - C₀ - 2.6 kN

Fatigue load limit - P_u - 0.108 kN

Reference speed - 50000 r/min

Limiting speed - 32000 r/min

Calculation factor - k_r - 0.025

Calculation factor - f₀ - 14.8

Mass bearing - 0.0161 kg

• Model Number: W 61903
• Inner Diameter：30mm Outer Diameter：17mm Width：7mm
• Type：Deep Groove Ball Bearings
• Update date：2025-12-17
• Application:Microwave Equipment,Special Equipment,Security Equipment,coal,Material handling equipment,bio-chemical,fruit and vegetable processing,Warehouse Shelf Equipment,water protection,medical equipment,ventilation equipment
• Similar models:ISO 61903-2RS SKF W61903R-2Z ISB SS61903-ZZ SKF W61903-2RS1 FAG 61903 ISO 61903 ISB SS61903-2RS NKE 61903 SKF 61903-2RS1 ISB 61903-2RS
• BEARING POWER International Trading Co.,Ltd. specialize in W61903 products，there is large inventory of SKF W 61903 . We has been built up long-term cooperation with SKF company, could make a bulk order of the W 61903 Which SKF W61903 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
  22330MBK	150	320	108	AST	Spherical Roller Bearings
  31320-X	100	215	56,5	FAG	Tapered Roller Bearings
  28MKM3516	28	35	16	KOYO	Needle Roller Bearings
  7334BG	170,000	360,000	72,000	NTN	Angular Contact Ball Bearings
  HR32014XJ	70	110	25	NSK	Tapered Roller Bearings
  N220-E-M6	100	163	34	NKE	Cylindrical Roller Bearings
  NA 4916	80	110	30	IKO	Needle Roller Bearings
  NA6911	55	80	45	SKF	Needle Roller Bearings
  NN3948MB	240	300	60	NSK	Cylindrical Roller Bearings
  PCJ323816	50.800	60.325		NTN	Needle Roller Bearings
  RMEO80	80			NKE	Bearing Units
  SA80ES	80			LS	Plain Bearings
  TUP1 15.15	15	17		CX	Plain Bearings
  UKFL218+H2318	80			NACHI	Bearing Units
  01/02/7424	120	215	58	RIV	TAPERED ROLLER BEARINGS
  52417				STEYR	THRUST BALL BEARINGS
  NF209	45	85	19	STEYR	CYLINDRICAL ROLLER BEARINGS
  RMS-131/2-L	1.6250	4.0000	.9375	CONSOLIDATED	CYLINDRICAL ROLLER BEARINGS
  IR-30x35x20	30		20	CONSOLIDATED	NEEDLE BEARINGS
  SN-209..20209	45	-	60	CONSOLIDATED	PILLOW BLOCKS