1.high quality
2.spherical roller bearing
3.precision level:p4 p5 p6 p0
4.sealing form:open z zz rs 2rs 2rz rw 2rw n
5.noise level:z1~z4
6.vibration:v1~v4
7.samples are available
8.package:wooden case, paper carton, pallet or according to customer's request.