o o ;
DPP of Band Brake
Special class
Apuroop Telidevara » Sept 1,202 APUROOP RAO SIR)
GATE | ESE (ME)
@ | M-Tech IIT-Kharagpur
| GATE/ESE:
@ 6 Years Teaching
| Experience
Subjects Taker
oO | Strength of Mat
Machine Design,
Engineering Mechanics,
and Theory of Machines
Is,
_ A differential band brake is shown in Fig. The diameter of the drum is 800 mm. The coefficient of
friction between the band and the drum is 0.3 and the angle of embrace is 240°. When a force
of 600 N is applied at the free end of the lever, find for the clockwise rotation of the drum the
torque which can be applied by the brake.
P=600N
All dimensions in mm.
JAPUROOPTO imaxoscoumrs SPS A differential band brake, as shown in figure has an angle of contact of 225°. The band has a
compressed woven lining and bears against a cast iron drum of 350 mm diameter. The brake is
to sustain a torque of 350 N-m and the coefficient of friction between the band and the drum is
0.3. Find the necessary force (P) for the clockwise and anticlockwise rotation of the drum.
JAPUROOPTO wwaxoscoumrs SPS A differential band brake is shown in Fig. The width and the thickness of the steel band are 100
mm and 3 mm respectively and the maximum tensile stress in the band is 50 N/mm2. The
coefficient of friction between the friction lining and the brake drum is 0.25. Calculate the
actuating force and the torque capacity of the brake.
JAPUROOPTO iaxoscours S2'US A band brake consists of a lever attached to one end of the band. The other end of band is fixed
to the ground. The wheel has a radius of 200 mm and the wrap angle of band is 270°. The
braking force applied to the lever is limited to 100 N and the coefficient of friction between the
band and the wheel is 0.5. No other information is given. Find the maximum tension that can be
generated in the band during braking and maximum braking torque.
200mm
+9aN
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IAPUROOPIO maxoscounra [2's
Subscription A differential band brake has a force of 220 N applied at the end of a lever as shown in Fig. The
coefficient of friction between the band and the drum is 0.4. The angle of lap is 180°. Find the
maximum torque that the brake may sustain for counter clockwise rotation of the drum.
220N
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200
All dimensions in mm.
JAPUROOPTO imaxoscoura SUS ‘APUROOP1O imaxoscoumrs SPS Weekly Tests cba cauniabds = ——
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