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：2026-04-16
Application:dye pigments,molding machine,Water Monitoring,forklift industry,Gear grinding machine,animal anatomy,Laser Measurements,Performance test,Perfusion device,Rolling mill gear box,Textile Industry Accessories and Accessories
Similar models:6311-2Z 331190 W 6207-2RS1/VP311 53311 + U 311 32311 7311 BEGAY W 6204-2RS1/VP311 NU 311 ECML AHX 311 331175 A
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Model No.	Inner Diameter	Outer Diameter	Width	Type
2310 E-2RS1KTN9 + H 2310	45	110	40	Bearings, units and housings
315257 A	610	820	-	Bearings, units and housings
32220/DF	100	180	-	Bearings, units and housings
470536	521	-	-	Seals
70x95x10 CRW1 R	70	95	10	Seals
92536	234.95	285.75	15.88	Seals
BB1B 630533	1030	1250	100	Bearings, units and housings
FSAF 1216 TLC	80	-	-	Bearings, units and housings
FYTB 40 TR	40	-	-	Bearings, units and housings
NNF 5036 ADA-2LSV	180	280	136	Bearings, units and housings
SSAFS 23040 KAT x 7.1/8	180.975	-	-	Bearings, units and housings
W 61901 R-2RZ	12	24	6	Bearings, units and housings

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