Bearings, units and housings -- Ball bearings -- Angular contact ball bearings -- Four-point contact ball bearings -- Angular contact ball bearings, four-point contact ball bearings SKF QJ 311 N2MA

QJ 311 N2MA

SKF Explorer

Dimensions

d		55	mm
D		120	mm
B		29	mm
d₁	≈	70.5	mm
D₁	≈	97.8	mm
a		61	mm
h		8.1	mm
b		6.5	mm
r₀		1	mm
r_1,2	min.	2	mm

Abutment dimensions

d_a	min.	66	mm
D_a	max.	109	mm
r_a	max.	2	mm

Calculation data

Basic dynamic load rating	C	137	kN
Basic static load rating	C₀	118	kN
Fatigue load limit	P_u	5	kN
Limiting speed		10000	r/min
Calculation factor	A	40.42
Calculation factor	e	0.95
Calculation factor	X	0.6
Calculation factor	Y₀	0.58
Calculation factor	Y₁	0.66
Calculation factor	Y₂	1.07

Mass

Mass bearing

1.75

Model Number: QJ 311 N2MA
Inner Diameter：55mm Outer Diameter：120mm Width：29mm
Reference speed:10000 r/min Limiting speed:-
Type：Bearings, units and housings Ball bearings Angular contact ball bearings Four-point contact ball bearings
Details： Four-point contact ball bearings Angular contact ball bearings, four-point contact ball bearings
Update date：2025-12-02
Application:Optical Instruments,wire industry,Blood coagulation reagent,die casting mold,drawing die,gear grinding machine,power source,auto tools,joint protection,altimeter etc,plastic blow molding
Similar models:HA 311 E 1311 EKTN9 + H 311 BD-22211 EK-AHX 311 32311 B W 6000-2RS1/VP311 W 6205-2RS1/VP311 33113 6311-2RSH HE 311 B 331175 BG/C355
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AXW 40	40	63	3	Bearings, units and housings
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PSM 152025 A51	15	20	25	Bearings, units and housings
PSMF 061004 A51	6	10	4	Bearings, units and housings
SHR 42	42	-	-	Coupling systems
YAR 207-106-2RFGR/HV	34.925	72	42.9	Bearings, units and housings

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