Product
Description
S27R-AFFF is an asbestos free flexible moulded
non-metallic friction material. Its material
composition consists of Binders, Glass Fibers,
Friction and modifiers, Fillers and Curatives. S27R
has a high degree of flexibility and conformity with
adequate physical strength. It has good resistance
to both fade and wear and is particularly suitable
for bonding purposes. S27R is also effective in
overcoming braking problems like squeal, judder and
grab.
Applications
S27R is recommended for use in medium to heavy
duty brakes of passenger cars and light
commercial vehicles and for all industrial/off
highway brake applications.
Technical Data
Friction
Friction Rating
( As per SAE J661a )
FF
Physical Properties
Specific Gravity
1.90
- 2.00
Hardness 'Shore D'
60 -
75
Tensile Strength
15
MN/m2
Compressive Strength
50
MN/m2
Shear
Strength
70
Kg/cm2
Recommended Peak Working Conditions
Continuous Temperature
200°C
Transient Temperature
315°C
Continuous Pressure
125
psi
Transient Pressure
300
psi
Bonding
S27R may be bonded with any of the established
bonding adhesives although for best results
thermosetting adhesives should be used. S27R is
supplied ground on both surfaces and may be
bonded on either side as required.
Recommended Mating Surface
For best performances use good quality, fine
grained pearlitic cast iron or forged/cold
rolled steel as mating surface with a brinell
hardness of 200-230. Cast steel is not suitable
as a mating surface.
