Gents
I am about to replace stuffed spherical roller bearings on a pinion shaft which goes hub - bearing - integral gear - bearing.
The shaft is about 14" diameter, hub is keyed and bearing is press/shrink fit. Hub is about 17" long
Planned procedure is:
Heat hub to around 100 deg C with gas...
Hi there
a process plant where I do some work has a number of large ball mills; fitted with fairly large rolling element bearings. The loads are predominantly radial, speeds are low, the inner races rotate and the outer races are stationary.
From time to time an outer race defect would occur...
My books indicate that a 25% solution of sodium hydroxide should have a freezing point of around -18 deg C.
However a local reputable reagent supplier tells me that their 25% solution freezes on a cold (say 0 deg C) day.
Any ideas why the difference? Stratification,impurities, book error?
I...
Gents
I need to anchor a pontoon to the shore. To do this I will use three shore mounted concrete blocks. The central block will be attached to the pontoon by a hinged walkway designed to resist compression/tension loads but not bending. The outer two blocks will each have a cable attached to...
Hi there
can anyone refer me to some freeware or similar for the design of a journal bearing.
Approx scantlings are:
Load: around 200T
Diameter: 1.5m
Width: 0.6m
Surface speed: 1 m/s
Lube: ISO 220 cSt (I hope)
Its a 180 degree bearing on an old ball mill that we are putting back in service. I...
Hi there
I have been asked to look at the possibility of repairing a steam turbine which has has severe damage to one row of blades.
It is a 1960's English Electric turbine driving a generator.
MCR is 3225kW(e). MER is 2085kW(e). Turbine speed is 6000rpm
Inlet steam is 415psig at 390 Deg C, 734...
