Abstract: A bearing testing machine comprising: a testing machine shaft to which at least one test piece being a bearing is attached, the testing machine shaft being a rotation shaft extending in a Y axis direction being a horizontal direction; a rotational driving unit configured to rotate the testing machine shaft; a test piece holding unit configured to elastically holds the test piece; and an at least one axle driving unit configured to drive the testing machine shaft in a vertical direction and in an X axis direction which is a horizontal direction orthogonal to the Y axis direction.

Abstract: A bearing testing machine comprising: a testing machine shaft to which at least one test piece being a bearing is attached, the testing machine shaft being a rotation shaft extending in a Y axis direction being a horizontal direction; a rotational driving unit configured to rotate the testing machine shaft; a test piece holding unit configured to elastically holds the test piece; and an at least one axle driving unit configured to drive the testing machine shaft in a vertical direction and in an X axis direction which is a horizontal direction orthogonal to the Y axis direction.

Abstract: A pin-type cage includes a plurality of pins passed through respective through-holes formed along the central axes of a plurality of rolling elements that are arranged in the circumferential direction of a rolling bearing, and annular retaining members that connect the pins to each other at axially opposite ends of the pins. Each of the pins has a reservoir space that is formed in the pin and that is filled with lubricant, and supply holes used to supply the lubricant from the reservoir space to an outer periphery of the pin.

Abstract: A load detecting device for a roller bearing includes: a strain gauge that is provided in a roller arranged rollably between a first bearing ring and a second bearing ring and that detects a load applied to the roller; a position detecting sensor that detects a rotation position of the roller in a revolution direction of the roller; and a data logger that is provided for the roller and that records and stores a detection signal from the stain gauge.

Abstract: A load detecting device for a roller bearing includes: a strain gauge that is provided in a roller arranged rollably between a first bearing ring and a second bearing ring and that detects a load applied to the roller; a position detecting sensor that detects a rotation position of the roller in a revolution direction of the roller; and a data logger that is provided for the roller and that records and stores a detection signal from the stain gauge.