4.7
POWER TRANSMISSION
The recommended driving motor is a slip ring
motor with a nominal speed of rotation of 25
1/s (1500 rpm) or 30 1/s (1800 rpm). The
motor power needed is 132-162 kW (200 HP)
depending on the selected stroke, cavity, feed
distribution and the material to be crushed.
In case the crusher driving motor is to be
mounted on fixed basement and the crusher is
oscillating in regard to the motor, the motor
must be located directly above or below the
countershaft of the crusher. The max.
oscillation of V-belt line should not exceed
15
°
when the crusher is running without load
(fig. 4.7.1). The purpose of this arrangement
is to avoid additional stresses caused by the
oscillating movement of the crusher. If driving
motor and crusher are mounted on the same
platform (= they are oscillating together), the
loc atio n of driv ing mo tor can be
independently chosen.
The power is transmitted from the driving
motor to the countershaft of the crusher by
using V-belts. The use of V-belts is most
recommended in this case, because they
prevent the shock loads from being conveyed
from the crusher to driving motor.
The V-belt pulley on the drive shaft of the
driving motor must be ruled to be accurately
parallel with the V-belt pulley on the
countershaft of the crusher. The drive shaft of
the driving motor must be parallel with the
countershaft of the crusher. The type of
V-belts is SPC (DIN 7753/ISO R460/SFS
3524) or 8V and there are 8 pcs of them. When
replacing V-belts, all of them must be replaced
at the same time. Never mix new and second
hand V-belts. The V-belts must also belong to
the same length category (stamped on belts) to
ensure the equal power distribution on all of
the belts. The required shaft distances with
different belt lengths are shown in figure
4.7.2.
Figure 4.7.2 Shaft distances
Figure 4.7.1 Drive motor installation
variations
Motor
Crusher
GP200S
Installation
4-8
140548
12/99
