Toner transporting device, developing device, and image forming apparatus

A toner transporting device comprising:

• a bearing having an inner ring that supports a shaft, a plurality of rolling elements disposed on an outer periphery of the inner ring, and an outer ring disposed around the rolling elements so as to surround the inner ring;
• an opposing section disposed facing a first side of the inner ring and the outer ring;
• a flange that is provided at a second edge at a second side of the outer ring, extends in a radial direction of the shaft, and covers at least a part of a second end surface at a second side of the inner ring;
• and
• an engaging section that serves as a first edge at the first side of the outer ring, extends out in an axial direction beyond a first end surface at the first side of the inner ring, and engages with the opposing section in a relatively movable manner,
• wherein the engaging section engages with the opposing section so as to surround an outer periphery of a protrusion provided in the opposing section,
• wherein the engaging section engages within an annular projection provided in the opposing section.