ROSTA
5.7
Motorbases
2 Support fixations
MB 27:
4 slotted holes 11
×
25 mm
MB 38:
4 slotted holes 13.5
×
35 mm
5 Insert and tension the belts, control belt test force
Tensioning of the belts according to belt suppliers recommended test force
(table on page 5.5).
MB 27: by means of threaded
MB 38: by means of threaded
bushing with 16 mm wrench (M10)
shaft with 24 mm wrench (M16 x 1.5)
4 Loosen of the shaft bolt
(element axis)
MB 27: 24 mm wrench (M16) and
MB 38: 30 mm wrench (M20)
3 Alignment of pulleys
and motor fixation
4 bolts according to relevant motor size
Retension:
Generally retensioning is not necessary, however, we recommend to inspect the belt tension
after a few days of operation.
6 Tighten of the shaft bolt
(element axis), start of operation
MB 27: 24 mm wrench (M16),
locking torque 210 Nm and
MB 38: 30 mm wrench (M20),
locking torque 410 Nm
MB 38
alter position of
pretensioning device
MB 27
Mounting instructions for MB 27 and MB 38
1 Determine of the ideal motorbase position
ideal position
of the MB,
longest
tensioning
travel
sufficient
tensioning
travel
contact
ROSTA