An open belt drive is used to rotate the driven pulley in the same direction of driving pulley. In the motion of belt drive, power transmission results make one side of pulley more tightened compared to the other side.
4) If, in a belt drive, the sense of rotation of both the pulleys is the same, the drive used is
open belt drive
Related Transmission of Power MCQ with Answers
power transmission is less than open belt drive
Cross belt drive having parallel shafts rotating in opposite directions.
It is similar to open belt drive but the difference between these two belt drives are in crossed belt drive the direction of rotation is opposite to each other.
Here the pulleys are set up to offset position. By providing some misalignment between two pulleys.
Keep in mind one of the most important thing for Cross-belt drive application: It can be used anywhere where the high speed power transmission is required.
crown
In belt drive, pulleys are made a slightly convex surface. This convex surface is called crown.
They make too much noise
A timing belt is a non-slipping mechanical drive.
Balata
Balata belts are similar to rubber belts except that balata gum is used in place of rubber. Balata belts are acid proof and water proof and it is not effected by animal oils or alkalies. The balata belts should not be at temperatures above 40° C because at this temperature the balata begins to soften and becomes sticky. The strength of balata belts is 25 percent higher than rubber belts.