Put into such a bearing press-fit hole in the seat, no further axial position. Sealing one end of a closed type, suitable for shaft, and can withstand small axial force. Operating temperature 120 to 150 degrees in a row work, short-term of up to 180 degrees. It is generally low carbon steel , such as ST14 or 08F ,etc., customize according to the needs of customer. Customize according to the needs of customer The series of British system has: SN/B/BH/M/MH/JT ; The series of the metric system has: F/FH/MF/MFH/FY/MFY