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LOCKING SLEEVES
EDT stainless steel locking
sleeves protect shaft surfaces
from abrasion and the normal
wear caused by plane bearings.
Locking sleeves provide:
- Improved bearing surface to increase bearing life
- Contain lateral shaft movement (replaces standard locking collar)
- Protection to shaft
- Abrasion resistant
- Repair damaged shafting
Locking sleeves can run on either side of the Poly-Round
spherical insert, depending on the space available.
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Bearing capacity is measured by PV and will determine
the amount of heat generated in a plane bearing. PV is
the relationship of the load to the shaft speed in a bearing.
Factors influencing PV limits (heat generation) include:
- material selection
- journal surface finish
- bearing wall thickness
- running clearance
- proximity to moisture
- ambient temperature
- cycle time
HOW TO CALCULATE PV
PV - P x V
P - pressure in PSI (lbs./sq. in.)
V - velocity in SFM (surface ft./min.)
P - F/A
where F = force (load) on bearing
A = shaft dia (in.) x LTB
(LTB = bearing length through the bore)
V - .262 x D x RPM
where D = shaft diameter (in.)
RPM = shaft revolutions/min.
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(1) PV limits are shown for unlubricated radial bearing applications.
Low temperature / submerged installation may permit PV limits up
to 2x higher.
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(2) Proper use of exclusionary seals can extend bearing life.
Forsheda V-rings can be effective with any of EDT’s plane bearings.
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APPLICATIONS TO AVOID
- high tension applications (V-belt drives, flat belt conveyors, urethane belts)
- high speed devices (fans, pumps, table top conveyors)
- overhung loads (shaft mounted gear reducers)
- trunnion applications
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