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PEARL BRAKE LININGS
PEARL
Industrial Brakes are suitable for a great variety
of brake and clutch components in the general
industrial field such as Industrial band and drum
brake linings, plate and cone clutch linings
(e.g. Cranes, lifts, excavators, winches, concrete
mixers, drop hammers, mine winding appliances,
underground haulages, tippers, oil well draw works,
road rollers, sugar mill centrifuges), certain
heavy road transport vehicles and tractors
DESIGN
VALUE: The co-efficient of friction for
design should be based upon the graph, the severity
of application, and maximum anticipated operating
temperature being taken into account. Normal
engineering practice should be followed in applying
an appropriate safety factor to torque requirements
of brake/clutch units.
These
industrial brake linings have a medium/high
coefficient of friction combined with moderate
temperature and wear resistance. It is available in
roll form and segments, cones and special
shapes can easily be cut from it. Being a flexible
material it is possible to form it to radius when
fitting it facilitates this operation , it may be
heated uniformly to a moderate temperature to soften
the impregnant. it is designed solely for use under
dry
conditions.
SIZE
RANGE (Nominal)
Supplied
in rolls of approximately 15 metres (50 ft. )
In
thickness form 4.8 mm(3/16") to 19.1 mm
(3/4")
In
width form 25.4 mm (1") to 463.6 mm (18.25")
RECOMMENDED
OPERATING TEMPERATURE
Maximum
Temperature - 260 C (500 F)
Maximum
Continuous Temperature- 125 C (257 F)
RECOMMENDED
MATING SURFACE
-
Good
quality close grain or alloy cast iron
-
If
steel, then forged or cold rolled with a Brinell
of 200 or over, Cast steel is not recommended
for use as mating surface
TECHNICAL
DATA: Average (Data based on international
standard test methods)
Tensile
Strength 246 kg/cm2
(3500 lbs /sq.in)
Compressive
Strength( for 10% compressions) 633 kg/cm2
(9000 lbs/sq.in)
Rivetholding
Capacity 900 kg.cm2
(12,800 lbs/sq.in)
Specific
Gravity 1.75 gm/cc (0.06 lbs/cu.in)
*
The continuous temperature
quoted is for constant slip conditions. For
intermittent applications, bulk temperature of 160 C
is acceptable for long periods.
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