According to the different requirements of bearing and bearing seat,the classification of bearing seat is not exactly the same,according to the design,carefully check the selection.

　　1.Classification by bearing seat shape:

　　1.1 outer spherical bearing with seat,also known as bearing unit(SKF term).When there is no bearing,it is called outer spherical bearing seat.1.1.1.1 the outer spherical bearing seat is divided into 200 series according to bearing series.The 500 series.The 300 series.The 600 series.XOO series.

　　1.2 the outer spherical bearing seat is divided into vertical seat(P seat),square seat(F seat),diamond seat(FL seat),circular seat(C seat),convex seat(FC seat),convex seat(FS seat),dark hole seat(PA seat)and hanging seat(FA seat).

　　1.3 integral(i.e.non-separated)vertical bearing seat group,bearing box cover with screw fastening.These vertical bearing blocks were originally developed as axle boxes for light rail trucks,but can also be used for traditional vertical bearing blocks.Non-separated vertical bearing blocks are more rigid than separate bearing blocks,some of which can bear heavier loads.The outer spherical bearing seat also belongs to the integral seat.

　　Split type bearing housing

　　2.1 split bearing housing:according to the different bearings selected and the requirements of the shaft,it can be divided into SN2,5,3,6 series,SNL2,SNL5,SD 2,5,3,6,3100,3000,3200

　　Bearing housing is divided into:split bearing housing,sliding bearing housing,rolling bearing housing,bearing housing with flange,spherical bearing housing,etc.