d - 17 mm

D - 30 mm

B - 7 mm

d₁ - - 20.4 mm

D₂ - - 27.7 mm

r_1,2 - min. - 0.3 mm

d_a - min. - 19 mm

d_a - max. - 20.3 mm

D_a - max. - 28 mm

r_a - max. - 0.3 mm

Basic dynamic load rating - C - 4.6 kN

Basic static load rating - C₀ - 2.6 kN

Fatigue load limit - P_u - 0.108 kN

Reference speed - 50000 r/min

Limiting speed - 26000 r/min

Calculation factor - k_r - 0.02

Calculation factor - f₀ - 14.7

Mass bearing - 0.0171 kg

• Model Number:61903-2Z
• Inner Diameter：30mm Outer Diameter：17mm Width：7mm
• Type：Deep Groove Ball Bearings
• Update date：2026-01-11
• Application:Small air generators,rubber products machinery and equipment,water protection,molding machine,EEG,other rubber,special broaching machine,Insect Count,inorganic chemical,ignition system,Antenna Industry
• Similar models:SKF W61903-2RZ ZEN S61903-2Z ZEN F61903 SKF 61903 ISB SS61903-ZZ ZEN 61903-Z.T9H.C3 NKE 61903-2RSR SKF W61903-2Z ISB 61903-2RS SKF W61903R-2Z
• BEARING POWER International Trading Co.,Ltd. specialize in 61903-2Z products，there is large inventory of SKF 61903-2Z . We has been built up long-term cooperation with SKF company, could make a bulk order of the 61903-2Z Which SKF 61903-2Z 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
  214WDD	70	125	24	Timken	Deep Groove Ball Bearings
  248/530	530	650	118	ISB	Spherical Roller Bearings
  71930 C	150	210	28	ISO	Angular Contact Ball Bearings
  E-2004-C	228,6	482,549	158,75	Timken	Thrust Roller Bearings
  EX209-28	44,45	85	56,3	SNR	Deep Groove Ball Bearings
  FTO13	11,113	20,65	7,95	INA	Thrust Ball Bearings
  GAKFL 20 PW	20	40	25	INA	Plain Bearings
  LF-1280ZZ	8	12	3,5	NMB	Deep Groove Ball Bearings
  NN3928MBKR	140	178	37	NSK	Cylindrical Roller Bearings
  RNA4905	30	42	17	NSK	Needle Roller Bearings
  RNAF203212	20	32	12	JNS	Needle Roller Bearings
  S61924	120	165	22	ZEN	Deep Groove Ball Bearings
  SCE87PP	12,7	17,4752	11,1252	AST	Needle Roller Bearings
  ZARF1560-L-TV	15	60	14	INA	Complex Bearings
  R170L	70	125	24	HOFF	CYLINDRICAL ROLLER BEARINGS
  BL-10	10	35	17	RIV	DEEP GROOVE BALL BEARINGS
  NBC13912	5.5000	6.5000	.5000	NSK	DEEP GROOVE BALL BEARINGS
  LS-33	15.0000	22.5000	3.0000	NH	DEEP GROOVE BALL BEARINGS
  R1-814ZZ	.2500	.5000	.1875	NMB	DEEP GROOVE BALL BEARINGS
  6304	20	52	15	STEYR	DEEP GROOVE BALL BEARINGS