Temperature -lowering bearing

The utility model discloses a temperature -lowering bearing, including bearing inner race, bearing inner race and ball layer, bearing inner race, ball layer and bearing inner race install from inside to outside in proper order, bearing inner race is last to be equipped with the through -hole that a plurality of runs through the bearing inner race both sides, one side of bearing inner race still is equipped with the protruding muscle of a plurality of, protruding muscle with the through -hole one -to -one, protruding muscle is located one side of through -hole. The utility model discloses a temperature -lowering bearing's bearing inner race adopts special design, can promote the air current to flow at the during operation, reduces the stability of bearing, extend bearing's life. 本实用新型公开了种降温轴承，包括轴承内圈、轴承外圈和滚珠层，所述轴承内圈、滚珠层和轴承外圈从内到外依次安装，所述轴承内圈上设有若干个贯穿轴承内圈两侧的通孔，所述轴承内圈的侧还设有若干个凸筋，所述凸筋与所述通孔对应，所述凸筋位于所述通孔的侧。本实用新型的降温轴承的轴承内圈采用特殊设计，在工作时能够促进气流流动，降低轴承的稳定，延长轴承的使用寿命。