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Four-point-contact ball bearing
Chrome steel, Gcr15
P0; P6; P5; P4
QJ206, QJ306, QJ207, QJ307, QJ208, QJ308, QJ209, QJ309 etc
JAMA Individual Box
Four-point-contact ball bearing is a separate type bearing, which also be said a set of angular contact ball bearing that can bear axial load in both directions,the inner and outer ring raceways are peach-shaped, when no load or pure radial load is applied, the steel ball and ring are in four-point contact.
As the contact angle increased, angular contact ball bearing has a higher axial load capacity, but a lower speed capability, thus, the ACBB with a smaller contact angle is better suited for high speed and high radial load applications.
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