valtsi ja tooriku vahelisele haardekaarele vastav maksimaalne nurk valtsimisprotsessi käivitumiseks (vt haardekaar; vrd kontaktnurk)
the maximum angle that can be attained between roll radius at the first contact and the line of roll centres (see: arc of bite; compare: angle of contact)
Hea teada
In rolling of metals, the location where all of the force is transmitted through the rolls.
