I have a customer that wants our auxillary pressure vessel to meet KHK standards. we have designed to ASME Sect VIII div1.
MAWP is 765 at 40C (operating temp). We were using forged 6 inch ANSI B16.5 Class 400 steel lap joint flanges, but I understand that KHK requires 43mm thick flange vs 41mm...
When using bi-filar or tri-filar methods one must be sure the strings are taut and don't stretch during the timing. Make sure there are no kinks in the strings.
I have been using this for about 6 months with standard roller bearings that are get washed thru with a solvent during a process. This of course removed the grease and caused the bearings to sieze. I have not had any problems since changing to Cobra.
Interesting problem. In a magnetic drive with a metallic barrier, heat is generated due to the induced electric fields produced in it. Ways to reduce this heating are decreasing the magnetic flux or increasing the resistivity of the barrier. If the magnetic flux has increased (increased rating...
2000 lb-ft on a 1-1/4 diameter inch keyed shaft is not feasible. If you are restricted to a 2-1/4 hub diameter, you should consider using a splined connection (sort of like many keyways).
For reference, the standard SAE F spline 8/16 DP 15Tooth and 1 inch length, it has a major diameter of 2...
We have a number of small magnetic couplings that can be used in your situation. There are two styles: disc and co-axial. The disc style is like 2 pancakes with magnets on the faces and hubs to connect to your shafts. The co-axial is an inner ring of magnets surrounded by an outer ring of...
There seems to be some confusion here about types of magnetic couplings, clutches, and brakes. There are three different types of magnetic interactions that can be used.
1. Synchronous- The pole pieces attract one another and torque is transmitted in synch with one another. There is no relative...
Actually, the effect can be seen at nearly any speed. With a 1/4" air gap, you can barely move a 1/8" thick aluminum plate thru the field by hand.
Eddy current devices create drag (torque), whenever a conductive material is moved within a magnetic field. The more conductive the material, ie, Silver, Copper, Aluminum, the higher the induced eddy currents. The stronger the magnetic field, the higher the higher the induced eddy...
Looked at the mag-rheo fluids vs hysteresis. Hysteresis requires no outside power source and continuous duty is no problem up to max power dissapation.
Sounds like a hysteresis brake/clutch is what you need. These devices work at any speed above zero. Linear is also no problem. A set of High Coercivity alternating pole permanent magnets (rare earth) on one moving part is positioned near a set of magnets with low coercivity (AlNiCo). As the...
Magnetic drive couplings are non-contact. There is nothing to fail or wear out. Most of the time the magnetic rotor that is immersed, is manufactured from 300 series stainless. The pump rotor must be fully supported, ie, bearings in your fluid. The barrier between the coupling halves must be...
