Responsible for microtubule translocation. May be important for the organization of phragmoplast-specific arrays of microtubules (By similarity). Plays an essential role in stabilizing the mitotic spindle (PubMed:17652157). Required during mitotic cytokinesis (PubMed:26745275). Microtubule-associated. Radially swollen roots without any depletion or disorientation of cortical microtubules or cellulose microfibrils. Belongs to the TRAFAC class myosin-kinesin ATPase superfamily. Kinesin family. KIN-5/BimC subfamily.