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General Description:
CR-2 is a flexible moulded, non-metallic
friction material, light grey in colour and having a random fibre
asbestos base. It is available in roll 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 surface: CR-2 is
perfect for bonding on either surface as well as for attaching with
rivets.
Applications:
Scooter and map drum brakes and
clutches, automatic edrum brakes, industrial drum brakes, industrial
band brakes, excavator brake and clutch band linings.
Technical
Data:
Friction
|
Mu
for design purposes (see-curve)
|
0.40
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Physical Properties
|
Data
based on standard test methods
|
|
Specific
gravity
|
2.0
kgs / cm2
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Ult.
tensile strength
|
140
kgs / cm2 |
Ult.
compressive strength
|
566
kgs / cm2 |
Ult. Shear
strength
|
77 kgs / cm2 |
Rivel
holding capacity
|
527
kgs / cm2 |
Shore hardness
"D"
|
50-70
|
Recommended operating range
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Unit pressure
|
1.0 - 7 kgs / cm2 |
maximum velocity
|
18m / sec.
|
Maximum
temperature
|
350oC
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Maximum
continuous temperature
|
150oC
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Note:
The continuous temperature quated is for
constant slip conditions. For intermittent drum brake applications,
bulk temperatures of 250oC 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 side 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 Brinell hardness of 200 or more may be used.
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