Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF 308 NR

308 NR

Dimensions

d		40	mm
D		90	mm
B		23	mm
d₁	≈	56.11	mm
D₂	≈	77.7	mm
D₃		86.79	mm
D₄		96.5	mm
b		2.7	mm
C		3.28	mm
f		2.46	mm
r₀	max.	0.6	mm
r_1,2	min.	1.5	mm

Abutment dimensions

d_a	min.	49	mm
D_a	max.	81	mm
D_b	min.	98	mm
b_a	min.	3	mm
C_a	max.	5.74	mm
r_a	max.	1.5	mm

Calculation data

Basic dynamic load rating	C	45.7	kN
Basic static load rating	C₀	36	kN
Fatigue load limit	P_u	1.53	kN
Reference speed		14000	r/min
Limiting speed		8500	r/min
Calculation factor	k_r	0.05

Mass

Mass bearing

0.64

Included products

Snap ring

SP 90

Model Number: 308 NR
Inner Diameter：40mm Outer Diameter：90mm Width：23mm
Reference speed:8500 r/min Limiting speed:14000 r/min
Type：Bearings, units and housings Ball bearings Deep groove ball bearings Deep groove ball bearings
Details： Deep groove ball bearings
Update date：2026-04-16
Application:machine tool spindle,light therapy instrument,relay,electrocardiograph,forklift industry,chromatography,tobacco machinery,mathematical instruments,surgical instruments,vertical sawing machine,chemical
Similar models:2308 E-2RS1TN9 OH 3084 H SNL 3084 TURA BD-C 3084 KM-OH 3084 H 330824 A 7308 BECBP 7308 BECBY NU 2308 ECML PSM 030804 A51 BS2-2308-2RS/VT143
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