TSUBAKI EMERSON CAM CLUTCH

www.bergab.ru Берг АБ bergab@ya.ru Тел. (495)-228-06-21, факс (495) 223-3071
A-1-3. Medium and Low-Speed Overrunning and
Medium and Low-Speed Engagement
(Overrunning speed = Up to 700 r/min)
(Engaging speed = Up to 700 r/min)
In this application, one driven unit is driven at twospeeds
by two medium and low-speed drive units,
both at speeds lower than 700 r/min. Two Cam
Clutches enable automatic switching between the
drive units.
Example of pasting roll drive
The above figure shows an example of Cam Clutches
being used with the pasting rolls of a corrugating
machine for making cardboard. The pasting rolls are
driven continuously by the main motor. During this
time, Cam Clutch A engages and Cam Clutch B
overruns. When the main motor must be stopped
temporarily to fix a problem, it is necessary to keep
rotating the pasting rolls in order to prevent paste on
the roll surface from drying. To do this, the rolls are
driven by an auxiliary motor at a low speed sufficient
to prevent the paste from drying (Cam Clutch A
overruns, while B engages). This system is also used
with meat choppers and screw feeds in food
processing machinery.
Applicable Series
Series Advantage Page
MZ, MZEU
MG
BB
PB
• Grease is sealed in, so lubrication maintenance
is not required.
• Compact and transmits high torque.
• Excellent wear resistance when overrunning.
• Same dimensions as the #62 type bearing.
• Integrated Cam Clutch and bearing.
• Sleeve-type outer race enables mounting of
sprocket or gear with small outer diameter.
• Use of oil-impregnanted alloy bearings makes
oiling to the bearing section unnecessary.
22 to
31
65
33, 34
37
A-2. NORMAL ENGAGEMENT REVERSE
OVERRUNNING
In this application, the normal rotating input power is
held for a certain time and, after driving the driven
side through the engagement of the Cam Clutch, the
Cam Clutch is put into the overrunning state by
reversing the input power. This application is classified
into the following three kinds, depending upon the
purpose for overrunning the Cam Clutch:
1. To simply break the linkage between the input side
and the driven unit (for details, see A-2-1 below).
2. To make the driven unit rotate in reverse by drive
from another source after making the input side
rotate in reverse, and brake the load by
engagement of the clutch when the speed of
rotation of the driven unit has reached that of the
input side (for details, see A-2-2 below).
3. To selectively drive either one of the driven units A
or B connected respectively to the outer races of
the different aligned Cam Clutches A and B, which
are connected to the same drive shaft. When Cam
Clutch A engages due to normal rotation of the
shaft, Cam Clutch B overruns, and when Cam
Clutch B engages due to reverse rotation of the
shaft, Cam Clutch A overruns (for details, see A-2-3
below).
A-2-1. Application requires breaking connection
only (see the figure below)
This example shows the use of a Cam Clutch with an
inclined pump. If the motor is wired in reverse by
mistake at installation, it will rotate the pump in reverse.
By mounting a Cam Clutch between the motor and the
pump, reverse rotation of the pump (which must not be
allowed) is prevented because the Cam Clutch will
overrun if the motor rotates in reverse. The Cam Clutch
stays engaged at all times when the rotation is normal.
Inclined pump
200
LD
• Since this series is mounted directly on the shaft,
it is possible to use a shaft of large diameter.
• Compact designs are possible.
• Grease is sealed in, so lubrication maintenance
is not required.
• For light loads and low-speed drive.
32
38
www.bergab.ru Берг АБ bergab@ya.ru Тел. 12 (495)-228-06-21, факс (495) 223-3071