We recently had a pump shaft failure and I wanted to confirm my thoughts on the failure before we address the repair. I've attached the photo of the fracture surface.
Background: This pump was rehabilitated last year with a new shaft, bearings, packing, etc. The new shaft was made of 4140. The...
I have fans that use silent chains that were designed in the 1950s. The Owner was able to buy the "buttons" that are used to lock the pins in place. As of a few years ago, they could purchase them from their supplier but now that they are out of them they can't seem to find them anywhere...
I am looking for a replacement grease for a GE induction motor bearing from the 1960s. From some of the publications I've seen, the older GE motors specified their D6-A2C5 grease for the bearings. Would a lithium based motor grease be a suitable replacement?
Also, I can't find any information...
I have a rotating forged steel shaft within a bronze sleeve bearing that has had poor maintenance and water intrusion for approximately 25 years. We have removed the bearing cap and found several of the shafts have flaking steel from the shaft. These flakes are magnetic.
There are three...
Can anyone suggest a solvent that can clean out grease grooves that has hardened grease that will not damage the shaft or bushing?
This is for a sleeve bearing with a cast bronze bushing and a forged steel shaft. The grease grooves are clogged in the base of the bearing and purge plugs were...
Can anybody recommend a material that could be used to make steel the wearing material. The load on the bearing is high and a steel on bronze will not work. The load is on the order of 1200 kips.
I have been posed a question regarding 4340 (forged, round bar) mechanical properties. The specs. call for it to be annealed and to have the ultimate strength be a minimum of 101 ksi and the yield to be a minimum of 69 ksi.
According to the supplier, the only way to obtain these mechanical...
Is there a way to determine shaft flexure?
The application of the shaft is for a centrifugal fan that is supported by 2 spherical roller bearings. The fan is belt driven from an 8 groove sheave that is mounted to the shaft extending from one of the bearings.
We calculated the deflections at...
I am trying to find a manufacturer of a bronze sleeve bearing. I looked at Dodge bearings, but their capacity is only 9 kips for a 4" bore. They need to withstand a 12 kip load. Can anyone help?
Thanks,
Don
I am trying to find the modulus of elasticity of an ASTM material. The material is ASTM A675 Grade 50. The ASTM spec. does not have it and I can't find it anywhere.
Don
