Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF 61903-2Z

61903-2Z

Dimensions

d		17	mm
D		30	mm
B		7	mm
d₁	≈	20.4	mm
D₂	≈	27.7	mm
r_1,2	min.	0.3	mm

Abutment dimensions

d_a	min.	19	mm
d_a	max.	20.3	mm
D_a	max.	28	mm
r_a	max.	0.3	mm

Calculation data

Basic dynamic load rating	C	4.62	kN
Basic static load rating	C₀	2.55	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

Mass bearing

0.017

Model Number: 61903-2Z
Inner Diameter：17mm Outer Diameter：30mm Width：7mm
Reference speed:26000 r/min Limiting speed:50000 r/min
Type：Bearings, units and housings Ball bearings Deep groove ball bearings Deep groove ball bearings
Details： Deep groove ball bearings
Update date：2026-04-17
Application:manual Tools,machine lathe,injection molding machine,reducer,clean stationery,chemical raw materials and reagents,tube,metallurgical mold,Sensors,screen filter,other rubber
Similar models:61903-2RZ 61903-2RS1 61903-2Z 61903 W 61903 W 61903-2RZ W 61903-2Z W 61903 R-2Z W 61903 R W 61903-2RS1
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155x180x15 HMS5 V	155	180	15	Seals
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22367	57.15	76.2	11.13	Seals
24122 CC/W33	110	180	69	Bearings, units and housings
310-2Z	50	110	27	Bearings, units and housings
32x52x8 CRW1 V	32	52	8	Seals
89316 TN	80	140	36	Bearings, units and housings
NU 2214 ECP	70	125	31	Bearings, units and housings
SAF 22315	75	-	-	Bearings, units and housings
SAF 23052 KAT x 9.7/16	241.3	-	-	Bearings, units and housings
Z 211	55	-	7	Seals
W 63802	15	24	7	Bearings, units and housings

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