WA-8 is a flexible, solid woven, asbestos based friction material made from asbestos yarn, spun around brass wire, which contributes considerably to its strength. WA-8 has a medium/high co-efficient of friction combined with moderate temperature and wear resistance. WA-8 is available in roll form. Segments, Cones and special shapes can easily be cut from it. Being a flexible material, it is possible toform it to radius when fitting it. Forming can be made easier by placing the material in an oven at a temperature of not more than100°C (212°F) until it has heated throughout to soften the impregnant. WA-8 is designed solely for use under dry conditions (i.e. it is not suitable for use in oil). WA-8 can also be supplied with both surfaces ground.
APPLICATIONS:
Industrial band and drum brake Linings ;
Industrial band, plate and cone clutch linings (eg. cranes, lifts,
excavators .winches, concrete mixers, drop hammers, mine
widening appliances, underground
haulages, tippers, oil well draw
works, road rollers, sugar mill
centrifuges), certain heavy road
transport vehicles and tractors.
TECHNICAL DATA:
Friction
m for design purposes 0.35
PHYSICAL PROPERTIES:
Data based on standard test methods
Specific gravity : 1.6
ult. tensile strength : 246 kg/cm2
ult. compressive strength: 630 kg/cm2
Rivet holding capacity : 900 kg/cm2
RECOMMENDED OPERATING RANGE:
Maximum temperature : 2600C
Maximum continuous temperature : 1250C
NOTE:
The continuous temperature quoted is for constant slip conditions. For intermittent applications, bulk temperatures of 160°C are acceptable for long periods.
RECOMMENDED MATING SURFACE:
Good quality fine grained pearlitic cast .iron. Cast steel is not a suitable mating surface but forged or cold rolled steel with a Brinell hardness of 200 or more may be used.
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.
MACHINING:
High speed steel tools are recommended for use with this material.
SIZE RANGE (NOMINAL):
Supplied in rolls of approximately 15 meters (50 ft) in thickness from 4.8 mm (3/16") to 19mm (3/4") and width from 25.4 mm (1 “)to 635.0 mm (25”)
WA-10 is a semirigid,
solid woven, asbestos-based
friction material with a brass wire
content. It is primarily intended for use
under oil immersed conditions, but can
also be used dry.
When in use for an oil-immersed
application, should the supply of
lubricant fail, WA-10 will continue to
function and avoid immediate failure
of the unit. It is available in Roll lining
form only.
APPLICATIONS:
Oil immersed brakes, plate and cone clutches for industrial usage,
earth-moving equipment, agricultural
machinery etc.,
PHYSICAL PROPERTIES (NOMINAL):
Data based on standard test methods:
Ultimate tensile strength : 240 kg/cm2
Ultimate shear strength : 125 kg/cm2
Ultimate compressive strength : 700
kg/cm2
Rivet holding capacity : 1000 kg/cm2
Specific Gravity : 1.9
RECOMMENDED OPERATING
TEMPERATURES:
Maximum temperature : 260°C
Maximum continuous temperature. : 125°C
NOTE:
It is possible to exceed the recommended maximum temperature
for short periods. The recommended maximum continuous
temperature is commensurate with a reasonable rate of wear.
RECOMMENDED MATING SURFACE :
Good quality close grain or alloy cast iron.
If steel, then forged or cold rolled with a Brinell hardness of 150
or over. Cast steels are not recommended for use as mating surface.·
CR-I is a flexible
moulded non-metallic friction material
with a random fibre asbestos base.
It possesses stable co-efficient of
friction and provides consistently
good performance over a fairly wide
range of operating conditions.
It offers smooth and powerful
braking, free from judder or brake
squeal.
It is available in both liner and roll
form and is suitable for use under
dry operating conditions only (i.e. it is
not suitable for use in oil).
Owing to it its flexibility, it is easy to form to any radius to
accommodate itself on the shoe. CR-I is also supplied with wire
backed reinfercement as CR-IK
APPLICATIONS:
Automotive drum brakes.
Light trucks and commercial vehicles drum brakes.
Industrial drum brakes, Band brakes, Moped and Scooter brakes.
TECHNICAL DATA:
Friction
m for design purposes
(see curve) : 0.35 (dry)
PHYSICAL PROPERTIES:
Data based on standard test methods
Ultimate tensile strength : 98kg/cm2
Ultimate compression strength : 562
kg/cm2
Ultimate shear strength : 140 kg/cm2
Rivet holding capacity : 440 kg/cm2
Shore hardness D : 60
Specific Gravity : 1.9
NOTE:
The continuous temperature quoted is for constant slip
conditions. For intermittent drum brake applications, bulk
temperatures of 250°C are acceptable for long periods.
BONDING:
CR-2 may be bonded with any of the established bonding
adhesive although for the best results, thermosetting adhesives
should be used. CR-2 is supplied ground on both surfaces and
so may be bonded on either surface.
RECOMMENDED MATING SURFACE:
Good quality fine grained pearlitic cast iron. Cast steel is not
suitable as a mating surface but forged or cold rolled steel with
a Brinell hardness of 200 or more may be used.
WA-42 is a semirigid
non-metallic, woven asbestos
friction material bonded by a high
temperature impregnant to give it
enhanced mechanical strength and
good antifade and wear properties.
The material is sufficiently flexible to
accommodate small changes in radius
and to make it suitable for use as a
band lining. The impregnant does not
soften when heated and large
changes in radius should not be
attempted.
WA-42 is available in liner and roll form and is suitable for use
under dry operating conditions (i.e. it is not suitable for use in oil).
APPLICATIONS:
General purpose automotive drum brakes, Industrial Drum Brakes,
Industrial band brakes and clutches (on e.g. excavators, cranes,
lifts, electro-magnetic brakes), drive shaft transmission brakes,
miscellaneous friction devices.
TECHNICAL DATA:
Friction
m for design purpose : 0.38
PHYSICAL PROPERTIES:
Data based on standard test method
Tensile strength : 210 kg/cm2
Ultimate Compressive
strength : 1266 kg/cm2
Rivet holding capacity : 970 kg/cm2
Specific Gravity : 1.48
BONDING:
WA-42 may be bonded with suitable
bonding adhesive. For best results thermosetting adhesives are
recommended. The lining surface should be prepared for bonding
by grinding, shot blasting, linishing etc.
SIZE RANGE (NOMINAL):
Supplied in rolls of approximately 15 metres (50 ft.), for thicknesses
4.763 mm {3/16") and 6.4 mm { 1/4") and in rolls of approximately
7.5 meters (25 feet) for thicknesses 7.9 mm (5/16"), 9.5 mm 3/8"
and 12.7 mm (1 /2"). The widths available are from 25.4 mm (1") to
177.8 mm (7").
MAGMA 23 is a
semi-rigid, soild woven asbestos
based friction material incorporating
zinc wire in its construction. Its
specially developed impregnant has
high temperature resistance, giving
the material excellent anti-fade and
wear properties. This marerial is
available in roll, lining, disc and flat
sheet forms. It is suitable for use
under dry operating conditions only
(i.e. it is not suitable for use in oil)
MAGAM 23 is the metallic version of MAGMA 13
The fade resistance is improved by the metallic content. This makes
the material particularly suitable for orduous applications such as
excavator band brakes and clutches.
In view of the wide application ofMAGMA 23 the availability of any particular size, thickness or shape should be checked with Hindustan Composites Ltd. before specifications are finalised
APPLICATIONS:
Automotive drum brakes
Industrial drum brakes
Industrial band brakes and clutches
Industrial plate clutches
TECHNICAL DATA:
Friction
m = 0.4 for design purposes (see curve below)
PHYSICAL PROPERTIES:
Specific Gravity : 1.65
Ultimate tensile strength : 190 kg/cm2
Ultimate compressive strength : more than 1600 kg/cm2
RECOMMENDED OPERATING RANGE:
Unit pressure : 1-7 kg/cm2
maximum velocity : 18m/sec
Maximum temperature : 3500C
Maximum continuous temperature : 1500C
BONDING:
MAGMA 23 may be bonded with any of the established bonding
adhesives although for the best results themosetting adhesives
should be used.
RECOMMENDED MATING SURFACE:
Good quality fine grained pearlitic
cast iron. Cast steel is not suitable
as a mating surface but forged or
cold rolled steel with a Brinell
hardness of 150 or more may be
used.
SIZE RANGE FLAT SHEETS:
Thickness (6.4 mm to 19.0 mm)
Width - (25.4 mm to 304.8 mm)
Length - (838 mm) max
ROLLS:
Thickness - (4.8 mm to 12.7 mm)
Width - (25.4 mm to 177.8 mm)
LENGTH OF ROLLS :
Appx 15 metres for thicknesses of 4.8 mm & 6.4 mm.
Appx 7.5 metrs for thicknesses
of 7.9 mm, 9.5 mm & 12.7 mm
RECOMMENDED OPERATING RANGE:
Maximum temperature : 3000C
Maximum continuous temp. : 1200C
Unit pressure 5 kg/cm2
NOTE:
It is possible to exceed the recommended maximum temperature
for short periods.
BONDING:
CR-1 can be bonded with any of the established bonding adhesives
although for best results, thermosetting adhesives should be used
CR-1 is supplied ground on both surfaces and so may be bonded
on either surface as required.
RECOMMENDED MATING SURFACE:
Good quality fine grained pearlitic cast iron. Cast steel is not suitable
as a mating surface, but forged or cold rolled steel with a brinnel
hardness of 200 or more may be used.
MACHINING:
High speed steel tools are satisfactory for use with this material.
SIZE RANGE:
Liners
Width : 25.4 mm (1”) to 127.00 mm (5”)
Thickness : 3.97 mm (5/32”) to 12.7 mm (1/2”)
Rolls
Width : 25.4mm(1”) to 101.6mm (4”)
Thickness : 3.969mm (5/32") to 12.7 mm (1/2")
CR-2 is a flexible
moulded, non-metallic friction material,
light grey in colour and having a
random fibre asbestos base. It is
available inroll and strip form and is
suitable for use under dry operating
conditions only (i.e. it is not suitable
for use in oil).
Although having a high friction level,
CR-2 is silent in operation with
excellent temperature and wear
resistance. Being ground on both
surfaces, CR-2 is perfect for bonding on either surface as well as
for attaching with rivets.
APPLICATIONS:
Scooter and moped drum brakes and clutches, automotive drum
brakes, industrial drum brakes, industrial band brakes, excavator
brake and clutch band linings.
TECHNICAL DATA:
Friction
m for design purposes
(see curve) : 0.40 (dry)
PHYSICAL PROPERTIES:
Data based on standard test methods:
Specific gravity : 2.0
Ultimate tensile strength : 140 kg/cm2
Ultimate compressive
strength : 566 kg/cm2
Ultimate shear strength : 77 kg/cm2
Rivet holding capacity : 527 kg/cm2
Share hardness “D” : 50-70
RECOMMENDED OPERATING RANGE:
Unit pressure : 1.0-7 kg/cm2
Maximum velocity : 18 m/sec
Maximum temperature : 3500C
Maximum continuous temperature : 1500C
Recommended Mating Surface:
(a) Good quality fine grained or alloy cast iron.
(b) If steel, then forged or cold rolled with a brinell hardness of 150
or over. Cast steels are not recommended for use as mating
surfaces.
Recommended Operating Temperatures:
Maximum temperature : 3500C
Maximum continuous temperature : 1500C
Note:
It is possible to exceed the recommended maximum temperature
for short periods. The recommended maximum temperature is
commensurate to a reasonable rate of wear.
HCAF 10 GG is one of the
range of Non-asbestos Friction
materials, it is a flexible moulded
product, Grey Black in colour and
having a basis of processed mineral
fibre and other metallic powder
substances in a random dispersion.
This material is produced in roll and
strip forms only and is suitable for
use under dry operating conditions
only (i.e.it is not suitable for use in
oil.)It has a high co-effieient of friction, it is flexible to facilitate
fitting it to metal brake bands or brake shoes. Either process of
rivetting or bonding may be used to attach the material to the metal
part. Additional heat treatment during bonding reduces the flexibility
of the material but remains fully adequate to use as a brake lining.
It is a high friction material, with excellent temperature and wear
resistance, and is silient in operation, suitable for use on a wide
range of applications and at a variety of duty levels. The material is
manufactured with a ground finish on both the surfaces so may be
bonded on eighter side.
APPLICATION:
Scooter and Moped Drum Brakes and
Clutches. Industrial Drum brakes,
Industrial band brakes. Crane and
Excavator brakes and clutch lining.
Vehicle brake linings(In selected
cases)
TECHNICAL DATA:
Friction
m for design purpose :0.45
PHYSICAL PROPERTIES:
Data based on standard test method and standard samples.
Specific Gravity : 1.75
Hardness :55 to 65 Shore “D”
Ultimate Compressive Strength : 600 kg/cm2
Ultimate shear strength : 80kg/cm2
Ultimate Tensile Strenght : 130kg/cm2
Rivet Holding Capacity : 550 kg/cm2
