QJ1272-MPA Bearings

d	360 mm	Bore diameter
D	650 mm	Outside diameter
B	122 mm	Width
Cr	1,110,000 N	Basic dynamic load rating, radial
C0r	2,600,000 N	Basic static load rating, radial
Cur	67,000 N	Fatigue load limit, radial
nG	1,700 1/min	Limiting speed
nϑr	810 1/min	Reference speed
≈m	191.6 kg	Weight

Mounting dimensions

da min	386 mm	Minimum diameter shaft shoulder
Da max	624 mm	Maximum diameter of housing shoulder
ra max	5 mm	Maximum fillet radius

Dimensions

rmin	6 mm	Minimum chamfer dimension
D1	544.2 mm	Shoulder diameter outer ring
d1	469.9 mm	Shoulder diameter inner ring
a	505 mm	Distance between the apexes of the pressure cones
α	45 °	Contact angle

Temperature range

Tmin	-30 °C	Operating temperature min.
Tmax	200 °C	Operating temperature max.

The QJ1272-MPA is a specialized four-point contact ball bearing designed to accommodate axial loads in both directions while allowing for radial loads. Its unique design features four point contact between the balls and the raceways, providing enhanced load-carrying capacity and minimizing friction, which results in smoother operation and increased reliability.

One notable characteristic of the QJ1272-MPA is its ability to handle misalignment and axial displacement, making it suitable for various applications where shaft alignment is not perfect. This bearing is often utilized in machinery subjected to reversing loads, such as in construction equipment, wind turbines, and industrial gearboxes.

The QJ1272-MPA is particularly advantageous in applications requiring high rotational speeds and durability under dynamic conditions. Its robust construction ensures a long service life, reducing maintenance requirements and downtime. As a result, it is an ideal choice for applications in sectors such as manufacturing, automotive, and renewable energy.

NO.	d[mm]	D[mm]	B[mm]
QJ10/710-N2-MPA	710	1030	140
QJ10/630-N2-MPA	630	920	128
QJ10/560-N2-MPA	560	820	115
QJ10/530-N2-MPA	530	780	112
QJ1096-N2-MPA	480	700	100
QJ1088-N2-MPA	440	650	94
QJ1272-MPA	360	650	122
QJ1088-N2-MPA-C3	440	650	94
QJ272-N2-MPA	360	650	95
QJ1080-N2-MPA	400	600	90
QJ264-N2-MPA	320	580	92
QJ1264-N2-MPA	320	580	105
QJ1076-N2-MPA	380	560	82
QJ1076-N2-MPA-C3	380	560	82
QJ1984-N2-MPA	420	560	65
QJ352-N2-MPA-C3	260	540	102
QJ1072-N2-MPA	360	540	82
QJ1072-N2-MPA-C3	360	540	82
QJ1260-N2-MPA	300	540	98
QJ1260-N2-MPA-C3	300	540	98

 

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