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  1. DrDarrell

    Machine Tool Foundation vs. Steel Plate/Epoxy

    I need to relocate some Machine Tools, some of which have foundations (3-4ft Re-enforced Concrete). One of our sister companies placed a Steel Plate and Epoxy beneath one of their Machine Tools in lieu of the manufacturers recommended foundation. They Claim that this has worked quite well. So...
  2. DrDarrell

    I have a VTL which needs a new Bearing, But....

    I have a VTL which needs a new Thrust Bearing, but I don't have the luxury of waiting 10 weeks to 30 months for a new bearing to be manufactured. I have ordered a new bearing but in the mean time, I would like to entertain alternatives that would allow me to functionally run my machine tool...
  3. DrDarrell

    I need to repair a Thrust Bearing

    It isn't angular. There are two Cylindrical Races 24" ID x 28" OD x .982 Thick. There is a Track ground into each Race with a .540" radius around a 26" circle. (The 26" circle may be slightly diferent.) The Tracks are about .200" Deep. Approximately 60 1.0000" Diameter balls ride in the tracks...
  4. DrDarrell

    I need to repair a Thrust Bearing

    I have a thrust bearing sitting on my bench. To order a new one would take 30 plus weeks, which I can ill afford. I have decided to approach a few machine shops to quote repair or replacement of the races. But before I do, I want to understand the difference between the Ball Diameters and the...
  5. DrDarrell

    I have a thrust bearing question

    I have a thrust bearing sitting on my bench. To order a new one would take 30 plus weeks, which I can ill afford. I have decided to approach a few machine shops to quote repair or replacement of the races. But before I do, I want to understand the difference between the Ball Diameters and the...
  6. DrDarrell

    ... I'm looking for a rule of thumb for estimating "Weld-Time"...

    I have some pipe assemblies that will be TIG welded. Is there a good rule of thumb for estimating the "Weld-Time" needed for each joint? Darrell
  7. DrDarrell

    ... 16,000 lb Welding Positioner ....

    I am i need of a 16,000 to 20,000 Welding Positioner. Does anyone have a surplus positioner? I appologize for asking this question in this forum, but I'm in a bind. Darrell
  8. DrDarrell

    Can I measure Water Hammer?

    I would like to thank all of you for the informative conversation. I think it is time to give a little background. I am building Valve/Actuator packages and I would like to design into the actuator a closing profile which slows the closing time toward the 100% close position. I have a fellow...
  9. DrDarrell

    Can I measure Water Hammer?

    Is Water Hammer the resultant "Noise" from the shock of acceleration of water? If so, Water Hammer is nothing more than vibration. Is there a point when Water Hammer is pressent and not detectable by the human ear? If so, would there be any damaging affect because of the seemingly small amout...
  10. DrDarrell

    If I now the pressure and the Pipe size can I calculate the flow rate?

    Big Inch: Thank you for your reply. I'm thinking of more along the lines of a length of 50-200 ft. and an outlet pressure of close to the same as the inlet. The elevation would be nearly horizontal (not more that 10 feet) Darrell
  11. DrDarrell

    If I now the pressure and the Pipe size can I calculate the flow rate?

    If I now the pressure and the Pipe size can I calculate the flow rate? I have a piping system with 8 inch Schedule 40 Pipe, and I have a constant pressure of 175 psig can I determine what the flow rate is in gpm? The fluid is fresh water. Respectfully, Darrell
  12. DrDarrell

    Sub-Slab Depressurization

    I have been approached by a survey team who suggest that I need to do a "...Sub-Slab Depressurization..." on my building. I have a 20,000 sq. ft. commercial structure with a 30ft high roof. I have been surfing the web for some information regarding the need and cost of this procedure. I have...
  13. DrDarrell

    High Temperature Seal

    I have an application that requires a close seal (5 scfm of air @ 200 psi @ 935 degrees F). A metal to metal seal is working alright, but it is very expensive to make economically. Is there a material that is slightly pliable and heat-resitant that could be used for a seat in my valve. Thank...
  14. DrDarrell

    My Air Compressor is very loud...

    I need to quiet my air compressor. I have read some literature on noise reducing/dampening materials. How do I know what product is right for my application? Thanks in advance for any help. Dr. Darrell
  15. DrDarrell

    AutoCad 2000, old plotter....

    Hi, Hopefully someone here has experienced what I'm experienceing. I've upgraded from Cadkey 6 to AutoCad 2000, but I still have my old plotter (Hewlett Packard HP-GL/2 Languge DraftMaster SX Plus). I've been trying for several days, and have yet to get a successful plot. I'm sure that it is...
  16. DrDarrell

    How do you estimate the amount of welding electrode/wire for a job?

    Is there a rule of thumb for estimating the amount of welding wire or welding electrode that is needed for any specific job? For example: If I have a 1/2" fillet weld 20" long, how much welding electrode do I need to buy to complete the job? I would like a rule of thumb for both...
  17. DrDarrell

    High Temp. Coatings....

    I am tasked with designing some equipment to operate within a high temperature (950 deg. F) atmosphere. To prevent wear and galling, I will be coating some of the moving parts with plasma nitride. But I have one component that is not a good candidate for plasme nitriding, (X750 Inconel). I...
  18. DrDarrell

    I'm researching the purchase of a 350 hp air compressor....

    Unfortunately, I am only in the research and quoting stage and I don't have the motor available to me. There is one more item on my quote sheet that might be of benifit. Motor: ODP Premeium Efficiency My conceren is, someone suggested that "...it will probably cost more to run the...
  19. DrDarrell

    I'm researching the purchase of a 350 hp air compressor....

    I'm researching the purchase of a 350 hp air compressor, what is the electrical consumption for this machine? Motor speed: 1780 rpm Voltage: 460/3/60 Horsepower: 350 Motor efficientcy: 94.1% Cost per KWhour $0.072 Thank you for any formulars and explanations. Darrell...
  20. DrDarrell

    I need a vent hole, but I don't know the formular for the size.

    Thank you david, I did look in my Machinery's Handbook. Unfortunately, I have the 19th edition. I guess it's time to upgrade. I will crunch some numbers with those formulars.

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