TSUBAKI EMERSON CAM CLUTCH

www.bergab.ru Берг АБ bergab@ya.ru Тел. (495)-228-06-21, факс (495) 223-3071
Example of energy saving pump
(power recovery system)
A-1-2. High-Seed Overrunning and Medium and
Low-Speed Engagement
(Overrunning speed = 700 r/min and up)
(Engaging speed = up to 700 r/min)
Example of energy saving drive for a soaking pit fan
Application of Cam Clutches in an energy saving
pump (power recovery system) shows how highly
effective energy saving can be achieved with the aid
of Cam Clutches. The motor-driven pump discharges
high-pressure liquid, which, after circulating, is used to
drive a turbine. The turbine is then used to help drive
the pump. If the pressure available is too low to rotate
the turbine at high speed, the Cam Clutch overruns.
However, when the rotating speed of the turbine
reaches the rotating speed of the motor, the Cam
Clutch engages automatically and the pump is driven
by both the turbine, and the motor. Thus, power
consumption equivalent to the turbine output can be
saved. Since energy loss during overrunning and
engagement of the Cam Clutch is extremely small, this
system produces results for pumps with an output as
low as 7.5 kW. Setup requires only installation of a
Cam Clutch and a turbine, and provides a highefficiency
energy recovery system with low running
costs.
Applicable Series
Series Advantage Note Page
Cam Clutch
Box
OB-ON
OB-SN
OB-SF
OB-S
MZ,
MZEU
• Can withstand extended
continuous running.
• Various lubricating and
cooling systems can be used.
• Minimal lubrication
maintenance required.
• Grease is sealed in, so
lubrication maintenance is not
required.
Please specify
on the approval
drawing that
TSUBAKI issues
when you place
an order.
—
70
to
71
22
to
31
The Cam Clutch works as a switcher for two driving
units (high-speed or medium/low-speed). When driving
a fan, cement kiln or conveyor in normal operation, the
driving speed is switched to high speed. When using
them for other purposes, the driving speed is switched
to medium or low-speed. The figure above shows a
soak pit fan used for melting aluminum and steel
ingots, with a Cam Clutch being used for energy
saving. The heating is done in two stages, one being
quick heating and the other being constant heating.
Switching is done automatically by a driving system.
For quick heating, the fan is driven by the main motor
at high speed (the Cam Clutch is overrunning at this
time). For constant heating, since the fan only rotates
at low speed, it is driven by a geared motor (the Cam
Clutch engages and the main motor and fan rotate
simultaneously). Compared to pole change or inverter
systems, great equipment cost savings can be made,
and the initial equipment costs can be recovered very
quickly. If equipment costs must be recovered within
one year of continuous running, this system is effective
for fans from the 15 kW class and up.
Applicable Series
Series Advantage Note Page
Cam Clutch
Box
OB-ON
OB-PN
MZ,
MZEU
• Can withstand extended
continuous running.
• Minimal lubrication
maintenance required.
• Grease is sealed in, so
lubrication maintenance is not
required.
Please specify
on the approval
drawing that
TSUBAKI issues
when you place
an order.
—
70
to
71
22
to
31
MR
• The cam is the outer race
overrunning type that lifts off.
— 66
www.bergab.ru Берг АБ bergab@ya.ru Тел. 10 (495)-228-06-21, факс (495) 223-3071