Equipment for moving a roll in a paper machine has a movable cradle (13)
for attachment to a roll (10). Two pairs of masses (16, 17) are supported
rotatably on the cradle (13), in each of which there is an own drive
shaft (18) for rotating the pairs of masses (16, 17). Drive devices (19)
include a motor (21) and drive-train means (22). The drive-train means
(22) include a pair of gears (23), which are arranged in connection with
the drive shafts (18), for rotating the drive shafts (18) using a single
motor (21). The drive-train means (22) also includes an adjustment
element (33) for creating and adjusting the phase difference of the drive
shafts (18). The adjustment element (33) is arranged between a gear (25)
and the corresponding drive shaft (18), to change their position and thus
to create and adjust a phase difference between the drive shafts (18).