The Premium Pembril PSS Fluid Coupling is an advanced design of Constant Fill Fluid
Couplings, when used in conjunction with a fixed speed motor, it will give the motor
a very light load start, provides smooth acceleration and will ensure overload protection
for the motor and driven machine.
Using a Fluid Coupling in the drive line often makes it possible to employ a smaller
motor because the Fluid Coupling allows the Motor to run quickly up to speed, where
its overload capacity may be used for starting the machine.
Pembril PSS Fluid Couplings are installed between coaxial shafts. Normally PSS Fluid
Coupling is mounted between the motor and machine shaft and connected by flexible
couplings, which absorb the small assembly misalignments.
During starting condition PSS Fluid Coupling Chamber withdraws almost 30-40% quantity
of oil from main circuit to reduce transmitted torque.
After motor reaches the full speed, this retained oil flows back into main circuit,
it can be controlled as required by means of nozzles externally.
The PSS Fluid Coupling is a rugged unit. The major components being made from high
tensile Aluminium Alloy Casting, it comprises of a basic Fluid Coupling, with the
added advantage of Delayed Chamber and Flexible Coupling. Flexible coupling and hollow
shaft bore and keyways may be finished to suit the customer requirements.
Filling and Fusible plugs are fitted on the casing wall and the periphery of the
coupling.
The main features of Pembril 'PSS' Fluid Coupling are:
Can be engineered at site to meet the desired acceleration time loll flow rate requirement
by replacing the oil filling nozzles without opening the unit.
Torque transmission by the Fluid Coupling during Motor start - up can be reduced
to approximately 50 to 60% of the rated torque.
Progressively increases the torque applied to the machine,
Design to achieve good heat-dissipation as compared to other Fluid Couplings
Hollow Shaft design for compactness
Manufactured in high tensile aluminum alloy for lighter weight.
Very high efficiency due to low slip at rated duty.
Selection Data
Max. Transmission Capacity in kW at various speeds- RPM
size
720.0
870.0
960.0
1450.0
1750.0
2950.0
320.0
4.0
7.0
10.0
34.0
56.0
85.0
370.0
5.9
11.2
15.8
56.0
100.0
140.0
410.0
10.9
19.2
26.0
89.0
140.0
275.0
450.0
16.7
29.5
39.7
134.0
185.0
450.0
500.0
30.9
55.5
74.1
175.0
275.0
580.0
59.8
105.2
143.0
346.0
500.0
660.0
105.3
187.0
255.0
600.0
700.0
740.0
199.5
337.0
388.0
783.0
810.0
290.0
490.0
600.0
1150.0
910.0
532.0
760.0
860.0
1040.0
870.0
1150.0
1252.0
ALL DIMENSIONS ARE IN MM
Filling Plug
Control Nozzle
Torque Characteristics During starting
% Speed
Motor Characteristics
Machine Acceleration
Time seconds
Acceleration Characteristics of Machine
Couplings and Fluid Drives - Soft Start Fluid Drive
OPTIONAL ACCESSORIES
Fusible Trip device Assembly.
Brake drum.
Oversize Half Coupling to accommodate larger shaft dia.