This Is A Wind Up, Right?
Originally Posted by timbo
Do people still weld "Snug Bars" to machined bearing plates to locate plulley bearings blocks after they have been tracked?
This is to make the process of relocating the pulley on reinstallation very easy after the initial installation.
I know this has been common practice in the past, but have not seen it done very often recently.
Any thoughs on current common practice would be appreciated!?
Regards
Tim
I've never heard of 'Snug Bars', probably because the concept is quite unprofessional. Plummer blocks are normally sat between adjusting screws which allow removal of the bearing block by loosening one screw and leaving the other fixed, or marked, to facilitate relocation of the same or closely identical unit. What is the 'Snug Bar' procedure if a larger bearing is used? The burnt off stub will have to be ground down. where's the 'very easy' in that situation?
By 'in the past' I can only imagine that this refers to the infancy of newly popular arc welding, which was long before my time. ■
John Gateley johngateley@hotmail.com www.the-credible-bulk.com
Fixing It Again
Hello Tim,
as far as i know (& practised quite a long time), those stoppers or cleats had the twin aim of fixing an correctly adjusted position and also make the fixation bolting free from any shear forces to be transmitted through friction grip. However, and specifically with pulley bearings and gearbox footings, as from some years ago an issue has been raised concerning the (roller) bearings themselves. When welding is done in the vicinity of bearings, the welding current is prone to take at least partially its way through the bearing. This might lead to "Current pitting" or " Burn-Ins" (i don't know the correct English expressions), damaging the bearings to scrap . It is technically possible to weld, but a task rather requiring a high level of preparation and requiring perhaps the specific isolation of the bearing.
So, today, John's hint to fixation bolts is imo good practice.
Regards
R. ■
"Snug Bar" to Locate Pulley Bearings
Hello Readers,
Do people still weld "Snug Bars" to machined bearing plates to locate plulley bearings blocks after they have been tracked?
This is to make the process of relocating the pulley on reinstallation very easy after the initial installation.
I know this has been common practice in the past, but have not seen it done very often recently.
Any thoughs on current common practice would be appreciated!?
Regards
Tim ■