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 309 N2MA

QJ 309 N2MA

SKF Explorer

Dimensions

d		45	mm
D		100	mm
B		25	mm
d₁	≈	58	mm
D₁	≈	81.2	mm
a		51	mm
h		5	mm
b		6.5	mm
r₀		0.5	mm
r_1,2	min.	1.5	mm

Abutment dimensions

d_a	min.	54	mm
D_a	max.	91	mm
r_a	max.	1.5	mm

Calculation data

Basic dynamic load rating	C	100	kN
Basic static load rating	C₀	83	kN
Fatigue load limit	P_u	3.55	kN
Limiting speed		12000	r/min
Calculation factor	A	20.15
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

1.05

Model Number: QJ 309 N2MA
Inner Diameter：45mm Outer Diameter：100mm Width：25mm
Reference speed:12000 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:Anti-defibrillation pacing,hydraulic cylinder buffer,EEG,Individual Wire,enzyme,pump,medical equipment,car shock absorber,plastic rolling,comprehensive experiment,Antenna Industry
Similar models:NN 3092 K/SPW33 7309 BEP BD-BS2-2209-2RSK/VT143-H 309 E 32309 NU 309 ECP NJ 309 ECJ BD-22309 EK-H 2309 3309 A-2RS1 HA 2309 2309 EKM
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Model No.	Inner Diameter	Outer Diameter	Width	Type
1300585	330.2	381	25.4	Seals
20079	50.8	80.01	9.53	Seals
23968 CCK/W33	340	460	90	Bearings, units and housings
591/670 F	670	800	78	Bearings, units and housings
6019-2RS1	95	145	24	Bearings, units and housings
780 VRME R	751	-	-	Seals
99138	34.925	41.6052	15.875	Seals
AHX 311	50	55	37	Bearings, units and housings
GE 25 ESX-2LS	25	42	20	Bearings, units and housings
HE 215	63.5	75	43	Bearings, units and housings
HJ 417	85	126	24	Bearings, units and housings
SAF 22226 TLC	130	-	-	Bearings, units and housings

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