Bearings, units and housings -- Ball bearings -- Self-aligning ball bearings -- Self-aligning ball bearings -- SKF 1311 EKTN9 + H 311

1311 EKTN9 + H 311

Dimensions

d₁		50	mm
D		120	mm
B		29	mm
B₁		45	mm
d₃		75	mm
D₁	≈	101.4	mm
B₄		12.5	mm
r_1,2	min.	2	mm

Abutment dimensions

d_a	max.	77	mm
d_b	min.	60	mm
D_a	max.	109	mm
B_a	min.	7	mm
r_a	max.	2	mm

Calculation data

Basic dynamic load rating	C	50.7	kN
Basic static load rating	C₀	18	kN
Fatigue load limit	P_u	0.92	kN
Reference speed		11000	r/min
Limiting speed		7500	r/min
Permissible angular misalignment	a	3	°
Calculation factor	k_r	0.04
Calculation factor	e	0.23
Calculation factor	Y₀	2.8
Calculation factor	Y₁	2.7
Calculation factor	Y₂	4.2

Mass

Mass bearing + adapter sleeve

1.9

Model Number: 1311 EKTN9 + H 311
Inner Diameter：50mm Outer Diameter：120mm Width：29mm
Reference speed:7500 r/min Limiting speed:11000 r/min
Type：Bearings, units and housings Ball bearings Self-aligning ball bearings Self-aligning ball bearings
Details： Self-aligning ball bearings
Update date：2026-07-25
Application:Other Machine Tools,packing equipment,medical Equipment,lifting upgrade,electromagnetic clutch,cleaners,Storage Tool,manual Tools,luminescent reagent,marine analysis and testing equipment,transistor fittings
Similar models:1311 EKTN9 + H 311 21311 EK 1311 ETN9 SAF 1311 FSAF 1311 FSAF 1311 T 31311/DF 1311 EKTN9 BD-21311 EK-AHX 311 BD-21311 EK-H 311
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Model No. Inner Diameter Outer Diameter Width Type

6391
FY 1.1/2 WF
IR 55x63x45
SNW 144x8
W 61708-2RS1

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Model No.	Inner Diameter	Outer Diameter	Width	Type
6391
FY 1.1/2 WF
IR 55x63x45
SNW 144x8
W 61708-2RS1