Bearings, units and housings -- Roller bearings -- Tapered roller bearings -- Single row tapered roller bearings -- Tapered roller bearings, single row SKF 6391/K-6320

6391/K-6320

SKF Explorer

Dimension series

6300

Dimensions

d		59.987	mm
D		135.755	mm
T		53.975	mm
d₁	≈	97.5	mm
B		56.007	mm
C		44.45	mm
r_1,2	min.	3.5	mm
r_3,4	min.	3.3	mm
a		34.364	mm

Abutment dimensions

d_a	max.	78	mm
d_b	min.	73.5	mm
D_a	min.	110	mm
D_a	max.	123.5	mm
D_b	min.	125	mm
C_a	min.	7	mm
C_b	min.	9.5	mm
r_a	max.	3.5	mm
r_b	max.	3.3	mm

Calculation data

Basic dynamic load rating	C	353	kN
Basic static load rating	C₀	400	kN
Fatigue load limit	P_u	45.5	kN
Reference speed		4000	r/min
Limiting speed		5000	r/min
Calculation factor	e	0.33
Calculation factor	Y	1.8
Calculation factor	Y₀	1

Mass

Mass bearing

3.94

Model Number: 6391/K-6320
Inner Diameter：59.987mm Outer Diameter：135.755mm Width：53.975mm
Reference speed:5000 r/min Limiting speed:4000 r/min
Type：Bearings, units and housings Roller bearings Tapered roller bearings Single row tapered roller bearings
Details： Single row tapered roller bearings Tapered roller bearings, single row
Update date：2026-06-24
Application:medical equipment,animal,walking Food processing machinery and equipment,Storage Device,fruit and vegetable processing,chamfer,Logistics Equipment,Industrial,Vacuum generator,CNC,Performance test
Similar models:6391/K-6320
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Model No. Inner Diameter Outer Diameter Width Type

25x62x8 HMS5 RG
30304
38x52x7 HMS5 V
FSYE 2 1/2 N
RNU 310 ECP

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Model No.	Inner Diameter	Outer Diameter	Width	Type
25x62x8 HMS5 RG
30304
38x52x7 HMS5 V
FSYE 2 1/2 N
RNU 310 ECP