Elastic shaft coupling

An elastic shaft coupling comprising:

• a pair of metal hubs formed in a substantially same shape and assembled to each other in a state where phases are shifted at a predetermined angle in a circumferential direction;
• and
• an elastic body interposed between the pair of hubs,
• wherein the elastic body includes:
• a connection portion disposed around a center axis of the elastic shaft coupling;
• and
• a plurality of rotation transmission portions provided for the connection portion along the circumferential direction, and each extending in a substantially bar shape from the connection portion along the center axis, and
• the pair of hubs each include:
• a hub main body portion configured to engage with a rotation shaft;
• and
• a plurality of protrusion portions extending from the hub main body portion along the center axis between the rotation transmission portions, and configured to come into contact with an outer circumferential portion of each of the rotation transmission portions.