High Precision Angular Contact NTN Ball Bearing QJ Series With Less Coefficient Friction
Detailed Product Description
Description:
Angular contact ball bearing can be subjected to both radial and axial load, it also can be subjected to pure axial load.Its axial load capacity depends on the contact angular and increase accordingly.It can be used for high speed and high precision equipments due to its high limit speed and pre-adjustable rigidity.
Single-row angular contact ball bearing only can be subjected to the single directional load.So normally this kind of bearingsare mounted by pair.
Quick Detail:
(1) have raceways in the inner and outer rings that are displaced with respect to eachother in direction of the bearing axis.
(2)This means that they are designed to accommodate combined loads, i.e, Simultaneously acting radial and axial loads.
(3)The axial load carrying capacity of increase with increasing contact angle.
(4)The contact angle is defined as the angle between the line joining the points of contact of the ball and the raceways in the radial plane, transmitted from one raceway to another.And a line perpendicular to the bearing axis.
(5)Features:
1.Load capacities are higher than deep groove ball bearing of same dimensions.
2.Used for bearing radial-axial combined loads or pure thrust loads.
The size includes
(0)2 series and (0)3 series
some of them are listed below
Boundary dimensions(mm)
Basic load ratings(kN)
Limiting speeds(rpm)
Mass(Kg)
Bearing Number
d
D
B
Cr
Cor
Grease
Oil
(Approx.)
HDBB
NTN
40
80
18
40.5
37
6700
9000
0.391
QJ 208
QJ208
65
120
23
90
83
4300
5600
1.2
QJ 213
QJ213
120
215
40
280
275
2200
3200
6.49
QJ 224
QJ224
30
72
19
44.5
31.2
6700
9000
0.42
QJ 306
QJ306
55
120
29
115
86.5
4000
5300
1.48
QJ 311
QJ311
110
240
50
328
345
2000
3000
12.4
QJ 322
QJ322
Competitive Advantage
1. Quality level: reach the same level as the Japanese and European bearings
