Sandeep

A good reference for bearings used in vibrating applications is from SKF.

Visit www.skf.com and search for "Technical Information - Publication No. TI 0401"

Titled "SKF Spherical Roller Bearings for Vibrating Applications"

It is a PDF document. I have it but it is rather large (1.3 MB) to post on the forum.

Regards

Gary ■

Greetings Sandeep,

if I understood you correctly are you referring to the weight of the entire screening unit comprising the frame, screens, and body of screening deck including drive motors and shaker arms?

"EVERY PART AFFECTS OR EFFECTS EVERY OTHER PART OF A SHAKER SCEENING SYSTEM"!!!

All the output shaft is doing is going around in a circle and the weight is creating the momentum /elliptical orbit to move the screen or screens

If there is no balance it will destroy itself.

I probably missed something and I am sure Lyn, gary or george will add to my posting.

This is why I like the Pennsylvania crusher brand "Bradford Breaker" as there is nothing to go bad with them-with occasional maintenance of changing drive tires, drive chains, they have been in use for over 50 plus years in many installations.

The screen panels can be replaced easily with little effort and you do not have to disassemble the unit to repair screens or replace them.

The simpler you keep everything the better as in the case of the "Bradford Breaker" where you screen and break incoming material with a drum and lift paddles by gravity.

Every particle is sceened and broken and what material is not screened can be returned to the inlet or sent to waste.

As far as lubrication goes it comes down to the speed of the motor driving the shaft with low rpm

you can use grease effectively but with high rpm oil should be used. In either case you will always have to keep track of the seals in the bearings-especially the seals on the inside of bearings facing the screen deck to make sure they are not blown out-if oil is used for lubrication.

more importantly is keeping the shaker arm rubbers free of buildup and dust as this will effect the harmonics and reduce the efficiency of the screen due to reduced movement from packed material around the screens shaker arm mounting rubbers.

With a "Bradford Breaker" you do not have these things to worry about along with easier installation-no hanging cables-no special chutes needed for the top of the screen or take away belts below the delivery end of the conveyor,no waste material tube for fines coming off the bottom of the screen deck etc. you essentially could use 2 belts for oversize and one belt to take a way material of desired size-the over size or bad material gets delivered to the other end and recirculated- if all you are handing is clean material- the longer the breaker drum assembly the more screening ability.



"Disclaimer"

I do not represent the penncrusher folks in any way. ■