Bearings, units and housings -- Roller bearings -- Tapered roller bearings -- Single row tapered roller bearings -- Tapered roller bearings, single row SKF 31311

31311

SKF Explorer

Dimension series

7FB

Dimensions

d		55	mm
D		120	mm
T		31.5	mm
d₁	≈	88.4	mm
B		29	mm
C		21	mm
r_1,2	min.	2.5	mm
r_3,4	min.	2	mm
a		37.064	mm

Abutment dimensions

d_a	max.	68	mm
d_b	min.	66.5	mm
D_a	min.	94	mm
D_a	max.	111	mm
D_b	min.	113	mm
C_a	min.	4	mm
C_b	min.	10.5	mm
r_a	max.	2.5	mm
r_b	max.	2	mm

Calculation data

Basic dynamic load rating	C	149	kN
Basic static load rating	C₀	137	kN
Fatigue load limit	P_u	16.6	kN
Reference speed		4300	r/min
Limiting speed		5600	r/min
Calculation factor	e	0.83
Calculation factor	Y	0.72
Calculation factor	Y₀	0.4

Mass

Mass bearing

1.54

Model Number: 31311
Inner Diameter：55mm Outer Diameter：120mm Width：31.5mm
Reference speed:5600 r/min Limiting speed:4300 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：2026-07-24
Application:Textile Industry Accessories and Accessories,marine analysis and testing equipment,relay,ventilation heating equipment,plastic rolling,Machine Tool Accessories,other accessories,welding equipment,Forging machine,Forming mold,Medical equipment
Similar models:31311 31311/DF
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Model No. Inner Diameter Outer Diameter Width Type

471101
AN 22
D/W R4A-2Z
HM 31/750
NNCF 4932 CV

Purchase the SKF 31311 Tapered roller bearings, single row Please fill in the following

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Model No.	Inner Diameter	Outer Diameter	Width	Type
471101
AN 22
D/W R4A-2Z
HM 31/750
NNCF 4932 CV