Drawbacks of using 3V belts for Fans/Blowers?

over hung loads are higher

3V which is 3/8" top width

5V which is 5/8" top width 8V is 7/8" top width the sheaves are heavier but higher H.P rated

Keith

BDI Canada Inc Winnipeg www.bdi-canada.com

V belts are able to transmit higher torque compared to earlier ones.however, to use lesser capacity belts like going for 3V belts in place of 5V or 8V belts. In case of 3v belts may not be adequate for the application you are intending. better to consult the belt manufacturer for their valuable input and guidence etc. in certain cases the individual belts tends jump out of pulley grove when Fans/Blower in running condition. in that case you have to check out for belts trip speed etc. If there is such case at hand in that case you have to go suitable banded belts which do not allow to betl to jump out from pulley grove like it does in some cases when individual single belts are used. this can happen due to belts natural frequency and fans /Blowers speed are near to each other.
In some cases we used to get such condition when running reciprocating compressor etc. Hope this answer will give you the importance of V-belt selection which are trouble free and safe.