Belts Flashcards
Advantage of V belt
No lube
cost effective
absorb shock
slip on overload
Minimum arc of contact for a belt
120 degrees
Belt terminology for loss of driving speed due to the lengthening and shortening of the belt as it cycles from the slack side to the tight side
creep
Belt terminology for increase in length of the belt over the period of time that it is in service
stretch
V series belt designated by ABCDE
classical series
V belt designed for its flexibility and bending
cogged raw edge
V belt designed to solve problems of belt vibration, whip and turnover
banded belt
V belt designed to transmit power on either side
double V
V belt designed for low horsepower
fractional horsepower
belt designated by AX BX CX
cogged raw edge
belt designated # of bands /Cx580
banded belt
Belt designated AA BB CC
double V
belt designated 2L 3L 4L 5L
fractional horsepower
belt designated by 3V 5V 8V
high capacity V belts
Why are high capacity V belts preferred over normal V belt
more tensile members, more narrow allowing for smaller sheaves
V belt that is flat with ribbed driving face. They are thin with well supported tensile member
Poly V belt
Tempurature belts are rated for
60 celsius
Contact needed for a timing belt
60 degrees or 6 teeth
3 types of timing belt
trapezoidal
rounded tooth
twin tooth
timing belt with teeth on both side used in a serpentine system
twin tooth
most common timing belt style
rounded tooth
