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 1284 N2MA

QJ 1284 N2MA

Dimensions

d		420	mm
D		760	mm
B		150	mm
d₁	≈	549	mm
D₁	≈	631	mm
a		590	mm
h		20.5	mm
b		25	mm
r₀		3	mm
r_1,2	min.	7.5	mm

Abutment dimensions

d_a	min.	456	mm
D_a	max.	724	mm
r_a	max.	6	mm

Calculation data

Basic dynamic load rating	C	1430	kN
Basic static load rating	C₀	3750	kN
Fatigue load limit	P_u	64	kN
Limiting speed		1300	r/min
Calculation factor	e	1.34
Calculation factor	X	0.54
Calculation factor	Y₀	0.44
Calculation factor	Y₁	0.47
Calculation factor	Y₂	0.81

Mass

Mass bearing

315

Model Number: QJ 1284 N2MA
Inner Diameter：420mm Outer Diameter：760mm Width：150mm
Reference speed:1300 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：2025-12-09
Application:motorcycle,Industrial,machining,sterilizers,pump industry,animal anatomy,EEG,hydraulic pump,Small air generators,glass,lifting chain
Similar models:QJ 1284 N2MA 312844 51284 F 312844/VJ202 81284 M
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Model No.	Inner Diameter	Outer Diameter	Width	Type
450x490x20 HDS1 R	450	490	20	Seals
407003	680	-	-	Seals
6307	35	80	21	Bearings, units and housings
99176	44.8564	52.4002	17.4752	Seals
FY 1.1/2 WDW	38.1	-	-	Bearings, units and housings
FY 40 TDW	40	-	-	Bearings, units and housings
HK 1416.2RS	14	20	16	Bearings, units and housings
NUP 316 ECML	80	170	39	Bearings, units and housings
SA 20 C	20	-	16	Bearings, units and housings
SNP 3076x13.15/16	354.0125	380	196.4182	Bearings, units and housings
SAFS 22540 x 7.1/4 TLC	184.15	-	-	Bearings, units and housings
W 618/1.5 R	1.5	4	1.2	Bearings, units and housings

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Hot number： 1400232 214-ZNR 62480 6305-2RSH 6315/VA201 KMD 5 NJ 2315 ECN2ML NK 17/16 NU 2216 ECML SAF 1313 SAF 22334 SAF 23044 KA x 7.15/16 W 6305-2RS1 SYFWK 1.1/2 LTA W 6207-2RZ