Bearings, units and housings -- Roller bearings -- Tapered roller bearings -- Matched tapered roller bearings -- Matched single row tapered roller bearings arranged face-to-face SKF 31308/DF

31308/DF

SKF Explorer

Dimensions

d		40	mm
D		90	mm
T		50.5	mm
2B		46	mm
b		11	mm
K		8	mm
r_3,4	min.	1.5	mm
r₅	min.	0.6	mm

Abutment dimensions

d_a	max.	51	mm
D_a	min.	71	mm
D_a	max.	82.5	mm
C_a	min.	3	mm
r_a	max.	1.5	mm
r_c	max.	0.6	mm

Calculation data

Basic dynamic load rating	C	156	kN
Basic static load rating	C₀	163	kN
Fatigue load limit	P_u	19	kN
Reference speed		4500	r/min
Limiting speed		7500	r/min
Calculation factor	e	0.83
Calculation factor	Y₁	0.81
Calculation factor	Y₂	1.2
Calculation factor	Y₀	0.8

Mass

Mass bearing pair

1.49

Model Number: 31308/DF
Inner Diameter：40mm Outer Diameter：90mm Width：-mm
Reference speed:7500 r/min Limiting speed:4500 r/min
Type：Bearings, units and housings Roller bearings Tapered roller bearings Matched tapered roller bearings
Details： Matched tapered roller bearings Matched single row tapered roller bearings arranged face-to-face
Update date：2026-07-24
Application:decoration machinery,Grinding and polishing equipment,tower crane,generator,food packaging,mechanical and electrical,hydraulic control element,magnetic elements,Other machinery,sample cup,outdoor equipment
Similar models:31308/DF 31308
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Model No. Inner Diameter Outer Diameter Width Type

16386
51228
C 31/670 KMB
SYR 2 7/16 N
TU 1.11/16 TF

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Model No.	Inner Diameter	Outer Diameter	Width	Type
16386
51228
C 31/670 KMB
SYR 2 7/16 N
TU 1.11/16 TF