Contact ball bearings
Four point contact ball bearings
Four point contact ball bearing is a separable bearing, and it can also be said to be a set of angular contact ball bearings that can
withstand bidirectional axial loads. The raceways of the inner and outer rings are peach-shaped cross-sections. When there is no load
or pure radial load, the steel ball and the ring appear as four-point contact, which is also the origin of the name.
The contact angle of QJ four point contact ball bearings is 35° or 45°. The inner ring is a split inner ring. This allows a larger number of
balls to be packed into the bearing, which gives the bearing a higher load carrying capacity. The four-point contact ball bearing is a
separate design, that is, the outer ring with the ball and cage assembly can be installed separately from the two inner ring halves.
The allowable speed of the four-point contact ball bearing is also very high, and it runs very smoothly. Its double half rings can be
removed from the whole set of bearings for installation separately, so the four-point contact ball bearing is mostly used in the engine,
because it can be used in the engine. It bears a large radial load and axial load at a high speed.
some of four-point contact ball bearing number,please check it. more of bearing number, please contact us.
Bearing Number | d(mm) | D(mm) | T(mm) |
QJ 211 MA | 55 | 100 | 21 |
QJ 211 N2MA | 55 | 100 | 21 |
QJ 311 MA | 55 | 120 | 29 |
QJ 311 N2MA | 55 | 120 | 29 |
QJ 212 MA | 60 | 110 | 22 |
QJ 212 N2MA | 60 | 110 | 22 |
QJ 312 MA | 60 | 130 | 31 |
QJ 312 N2MA | 60 | 130 | 31 |
QJ 213 MA | 65 | 120 | 23 |
QJ 213 N2MA | 65 | 120 | 23 |
QJ 313 MA | 65 | 140 | 33 |
QJ 214 MA | 70 | 125 | 24 |
QJ 214 N2MA | 70 | 125 | 24 |
QJ 314 MA | 70 | 150 | 35 |
QJ 314 N2MA | 70 | 150 | 35 |
QJ 215 MA | 75 | 130 | 25 |
QJ 215 N2MA | 75 | 130 | 25 |
QJ 315 N2MA | 75 | 160 | 37 |
QJ 216 MA | 80 | 140 | 26 |
QJ 216 N2MA | 80 | 140 | 26 |
QJ 316 N2MA | 80 | 170 | 39 |
QJ 1017 N2MA | 85 | 130 | 22 |
QJ 217 MA | 85 | 150 | 28 |
QJ 217 N2MA | 85 | 150 | 28 |
QJ 317 N2MA | 85 | 180 | 41 |
QJ 218 N2MA | 90 | 160 | 30 |
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