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. - 20.5 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 - 24000 r/min

Calculation factor - k_r - 0.025

Calculation factor - f₀ - 14.8

Mass bearing - 0.017 kg

• Model Number: W 61903-2Z
• Inner Diameter：30mm Outer Diameter：17mm Width：7mm
• Type：Deep Groove Ball Bearings
• Update date：2025-04-22
• Application:Pneumatic Control Elements,crimping tools,printing machinery,sleep monitoring,surgical instruments,Forming mold,clean stationery,marine analysis and testing equipment,stirrer,Optical detection,electric pump
• Similar models:SKF W61903-2Z SKF 61903 ZEN 61903 ISB SS61903 ISB SS61903-2RS CX 61903ZZ SKF W61903-2RS1 ISO 61903ZZ ISB 61903 ISB 61903-2RS
• BEARING POWER International Trading Co.,Ltd. specialize in W61903-2Z products，there is large inventory of SKF W 61903-2Z . We has been built up long-term cooperation with SKF company, could make a bulk order of the W 61903-2Z Which SKF W61903-2Z 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
  4T-30215	75	130	27,25	NTN	Tapered Roller Bearings
  6012-2RSR	60	95	18	FAG	Deep Groove Ball Bearings
  7312-BECB-TVP	60	130	31	NKE	Angular Contact Ball Bearings
  ARR6FFN	9,525		9,525	NMB	Spherical Roller Bearings
  E5012NR	60	95	46	NACHI	Cylindrical Roller Bearings
  F607ZZ1	7	22	6	NSK	Deep Groove Ball Bearings
  GE40ES	40	62	28	CRAFT	Plain Bearings
  HM911244/HM911210	59,987	130,175	34,1	Timken	Tapered Roller Bearings
  K8x12x10TN	8	12		SKF	Needle Roller Bearings
  NJ31/560	560	920	280	CX	Cylindrical Roller Bearings
  RCJY1-1/8	28,575			INA	Bearing Units
  SF25ES	25			LS	Plain Bearings
  105HCUL	25	47	12	Barden	ANGULAR CONTACT BALL BEARINGS
  NJ2238	190	340	92	FAG	CYLINDRICAL ROLLER BEARINGS
  SN216with2216	80	-	90	SKF	PILLOW BLOCKS
  0L36	180	280	46	New Departure	ANGULAR CONTACT BALL BEARINGS
  6112KK	60	95	18	NH	DEEP GROOVE BALL BEARINGS
  17AANOn	100	180	60.3	RIV	DOUBLE ROW ANGULAR CONTACT BALL BEARINGS
  6304-2ZNR	20	52	15	STEYR	DEEP GROOVE BALL BEARINGS
  217M-ZZ	85	150	28	CONSOLIDATED	DEEP GROOVE BALL BEARINGS