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I would like to know how to calculate pin diameters to measure the pitch in helical gears esp in girth gear and pinions. Is there any software available to download

Do anyone have info on contact percentage required for a slide shoe bearing in a ball mill.

thanks for the advice. but i am at the suppliers end. the compressors flow as measured near the system is around 700 cfm. The orginal designer is not accepting for dryer system. so from our end we have identified some critical points where the jamming occurs and it also coincided the lowest...

I am experienced with a pneumatic conveying system - Dense phase system for fly ash. I have frequent jamming problems on the flyash pipe line. The system uses two 110 KW compressors - 45 psi max at 150 deg C.This is a dual tank operation and if one finishes conveying the other one starts. I have...

Can anyone give me information regarding tap drill sizes for various standards like bsw,bsp,bsf,npt.

From experts who deal with gear failures, I heard that the pitting usually starts from the dedendum due to negative sliding conditions.But in pitch line its more of a rolling contact that that of a sliding contact.Will you brief me why you have said that the pitting starts on pitch line for me...

Thanks for the info. Actually i wanted to know about pittings forming exactly on the pitch line of the pinion.Is there any relation with the material hardness. I have seen pinions where only in a very few tooth the pittings have been formed and not on all the tooth.

What are the possible causes of pitting in pinions. I am service Engineer and have seen cases where there is no pitting in girth gear but its only on pinions,especially , the pitting starts on the pitch line of the pinion. Its a through hardened pinion.The gear units has spray lubrication which...