Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Recent content by greye

  1. greye

    VFD operation on high inertia loads

    have you given any thought to using hydraulic drive. closed or open loop system very simple systems and braking not a problem if you need further info let me know. greye.
  2. greye

    VFD operation on high inertia loads

    hi there about your centrifuge braking why dont you use a hydraulic drive very simple and no problem braking to come down to plough speed +-70rpm works like a dream i have done two latest one using load sensing with speed feed back for spot on speed control at start ramp to charge speed ramp to...
  3. greye

    rod buckling calculation

    hi there eulers formula can be adapted for cylinders, Fcr = pi2 x E X I/L2 ----- (eULERS ) sub. pi x d4/64 for I ( solid round shaft ) and 2.07 x 10*5 foe E (steel ) Fcr = pi*3 x d*4 x 2.07 x 10*5/l*2 x 64 then Fcr = d*4 x 10*5/l*2 then d*4 = Fcr x l*2/1 x 10*5 d = 4th root of Fcr x l*2/1 x...
  4. greye

    Synchronizing Hydraulic Cylinders

    hi there regarding your cylinder synchronizing. i have used gear dividers and valve dividers, cylinders will stay in to about 15% of perfect synchronization. in designing systems the cylinders should bottom out against a positive stop in both directions, this i have found helps greatly, also...
  5. greye

    [b]Cooling System for Fluid Power Application[b]

    hi there, a few tips hopefully they will be of help. New system. 1. pump loss 15% of input power. 2. motor loss 15% of input power. 3. R/V loss BTU/HR average ( 1.5 x PSI x GPM ) 4. Flow control loss use press diff across in to out as PSI in calculation. 5. Press reducing loss if any use same...
See more

Part and Inventory Search

Back
Top