Slide bearing

A slide bearing comprising:

• a lower half bearing portion that covers a rotating shaft from below and includes a lower slide surface slidably supporting the rotating shaft;
• an upper half bearing portion that covers the rotating shaft from above and includes an upper slide surface slidably supporting the rotating shaft so as to be joined to the lower half bearing portion;
• an oil supply passage that is formed in the lower bearing portion and supplies lubricating oil into clearance between an outer peripheral surface of the rotating shaft and the lower slide surface and the upper slide surface;
• an oil discharge passage that is formed at a position on a side opposite to the oil supply passage of the rotating shaft in the lower half bearing portion and discharges lubricating oil from the clearance;
• and
• a piping unit provided with an oil supply piping and an oil discharge piping which are integrated with each other, in which the oil supply piping provided with an oil supply inlet located on a side with the oil discharge passage extending toward the oil supply passage and connectable to the oil supply passage and the oil discharge piping is provided with an oil discharge outlet located on a side with the oil supply passage extending toward the oil discharge passage and connectable to the oil discharge passage.