Roll line unit and continuous casting apparatus

A continuous casting apparatus comprising:

• at least one roll line unit including:
• a roll mantle having a first end, a second end and an outer working surface configured to support a metal strand and extending entirely between the first end and the second end;
• a non-rotatable shaft including a coolant line;
• first and second bearings rotatably mounting the roll mantle to the shaft, the first bearing being located within a first end of the roll mantle outer working surface and the second bearing being located within a second end of the roll mantle outer working surface;
• and
• first and second outer seals, the first outer seal being located on an axially outward side of the first bearing and entirely axially inward of the first end of the roll mantle outer working surface, the second outer seal being located on an axially outward side of the second bearing and entirely axially inward of the second end of the roll mantle outer working surface;
• wherein the roll mantle has at least one coolant channel with at least one fluid inlet arranged to be in fluid communication with the coolant line of the shaft.