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 MA

QJ 311 MA

SKF Explorer

Dimensions

d		55	mm
D		120	mm
B		29	mm
d₁	≈	70.5	mm
D₁	≈	97.8	mm
a		61	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 MA
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：2026-06-24
Application:mechanical and electrical,wall industry,Display Devices,pipe fittings Steel industry,other lathe,storage shelves,sawing machine,surgical instruments,stirrer,magnetic elements,walking Food processing machinery and equipment
Similar models:W 6202-2RS1/VP311 331158 A 7311 BECBPH 331175 BG/C355 BD-21311 EK-AHX 311 W 6006-2RS1/VP311 2311 M NJ 2311 ECP 32311 BR 7311 BECBM
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Model No. Inner Diameter Outer Diameter Width Type

42x60x7 HMSA10 RG
6006-2RZ
MS 30/950
NN 3028 K/SPW33
SAF 22244 T

Purchase the SKF QJ 311 MA Angular contact ball bearings, four-point contact ball bearings Please fill in the following

Hot number： 15194 6243 83760 BK 2518 RS C 2212 TN9 FY 25 TF N 05 NN 3064 K/SPW33 SAFS 22640 x 7.1/8 T SAFS 23024 KA x 4.1/8 SAFS 23044 KATLC x 7.7/8 SHR 16 SNL 524-620 SNW 140x7.1/4 W 6002-2RS1

Model No.	Inner Diameter	Outer Diameter	Width	Type
42x60x7 HMSA10 RG
6006-2RZ
MS 30/950
NN 3028 K/SPW33
SAF 22244 T