The BSQ support unit is comprised of a main body, bearing, cover spacer, oil seal, lock nut, and a bolt with a hex hole. The support unit is used on the support side and the fixed side of each screw shaft, which makes it possible to place the screw shaft in the correct position. The compact size makes it easy to mount and can be used in narrow spaces. Additionally, an adequate amount of grease has already been sealed within the bearing to adjust it to the optimal state for use so that it can immediately be installed on your machine as-is and reduce assembly operation time and improve the assembly accuracy and consistency.