CONSTANT VELOCITY JOINT

PROBLEM TO BE SOLVED: To provide a constant velocity joint having good lubricity.SOLUTION: A constant velocity joint 10 includes an outside joint member 20 having a plurality of inner peripheral face raceway grooves 23 formed in the inner peripheral face, an inside joint member 30 having a plurality of outer peripheral face raceway grooves 32 formed in the outer peripheral face, a plurality of balls 50 for rolling in the inner peripheral face raceway grooves 23 and the outer peripheral face raceway grooves 32 to transmit torque between the outside joint member 20 and the inside joint member 30, and a cage 60 annularly formed and arranged between the outside joint member 20 and the inside joint member 30, and having a plurality of window parts 63 formed peripherally around the rotation axis to store the balls 50, respectively, the plurality of balls 50 each having outer peripheral grooves 51a formed in the outer peripheral face 50a.SELECTED DRAWING: Figure 1 【課題】良好な潤滑性を備える等速ジョイントを提供する。【解決手段】等速ジョイント１０は、内周面に複数の内周面軌道溝２３が形成される外側ジョイント部材２０と、外周面に複数の外周面軌道溝３２が形成される内側ジョイント部材３０と、内周面軌道溝２３および外周面軌道溝３２を転動し、外側ジョイント部材２０と内側ジョイント部材３０との間でトルクを伝達する複数のボール５０と、環状に形成され、外側ジョイント部材２０と内側ジョイント部材３０との間に配置され、回転軸線回りにおける周方向にボール５０をそれぞれ収容する複数の窓部６３が形成された保持器６０と、を備え、複数のボール５０は、各外周面５０ａ上に外周溝５１ａが形成される。【選択図】図１