pump alignment
pump alignment
(OP)
Hi folks,
i was reading some where that pump alignment should be done at the operating temperature. Does it really make much of a difference if say, my operating temperature is below 60 C and i align the pump at 25 C?
Thanks...
-SB
i was reading some where that pump alignment should be done at the operating temperature. Does it really make much of a difference if say, my operating temperature is below 60 C and i align the pump at 25 C?
Thanks...
-SB





RE: pump alignment
RE: pump alignment
RE: pump alignment
Motor and engine driver pumps.
Pump handling cold liquid.............Driver .005" to .008
lower than pump.
Pump handling hot liquid..............Driver .002" to .005
250degF or higher higher than pump.
Turbine driven pumps (Turbine having centerline support)
Pump handling cold liquid.............Turbine .005" to .008
lower than pump.
Pump handling hot liquid..............Turbine .001 to .004
(250degF) higher than pump.
Turbine driven pumps (Turbine without centerline support)
Pump handling cold liquid.............Turbine .020 to .023
lower than pump
Pump handling hot liquid..............Turbine .014 to .017
250degF. lower than pump.
Belt driven pumps (pulley on separately mounted Jackshaft)
Pump handing cold liquid..............Coupling halves within
.003
Pump handling hot liquid..............Jackshaft .006 to .009
250degF. higher than pump.
Once you have performed this cold alignment between the driver and pump, operate pump until pump and driver are to
full operating temperatures. Shut down your machinery and re-take your alignment readings. For units operating above 250deg. Hot alignment readings should be taken within 10-15 minutes of securing. You may find that due to pipe stress with temp increase, these calculations are just a starting point for your required alignment. Cold (prior to start) and Hot (units up to operating temp) readings should always be taken to ensure proper unit alignment.
Poppeye
RE: pump alignment
Motor and engine driver pumps.
Pump handling cold liquid.............Driver .005" to .008
lower than pump.
Pump handling hot liquid..............Driver .002" to .005
250degF or higher higher than pump.
Turbine driven pumps (Turbine having centerline support)
Pump handling cold liquid.............Turbine .005" to .008
lower than pump.
Pump handling hot liquid..............Turbine .001 to .004
(250degF) higher than pump.
Turbine driven pumps (Turbine without centerline support)
Pump handling cold liquid.............Turbine .020 to .023
lower than pump
Pump handling hot liquid..............Turbine .014 to .017
250degF. lower than pump.
Belt driven pumps (pulley on separately mounted Jackshaft)
Pump handing cold liquid..............Coupling halves within
.003
Pump handling hot liquid..............Jackshaft .006 to .009
250degF. higher than pump.
Once you have performed this cold alignment between the driver and pump, operate pump until pump and driver are to
full operating temperatures. Shut down your machinery and re-take your alignment readings. For units operating above 250deg. Hot alignment readings should be taken within 10-15 minutes of securing. You may find that due to pipe stress with temp increase, these calculations are just a starting point for your required alignment. Cold (prior to start) and Hot (units up to operating temp) readings should always be taken to ensure proper unit alignment.
Poppeye
RE: pump alignment
RE: pump alignment