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5–15
Frelon® Lined Linear Bearings
• Softer shafting will cause an accelerated
wear to both the shaft and the bearings.
• Optional liners are available for both
nonhardened shafting and for use in
food applications.
RUNNING CLEARANCES:
• Precision Series - approximately .001".
High precision, similar to a preloaded
ball bearing.
• Standard Series - approximately .002".
Excellent for parallel shaft applications,
similar to a typical ball bearing.
LUBRICATION:
• Frelon lined bearings are self-lubricating.
• Additional lubrication reduces friction 50%,
minimizes wear, reduces heat, allows
greater speed, and extends wear life.
• Acceptable lubrication includes SAE 10
to 40W, way lube oils, petroleum-based
greases and even water.
• DO NOT USE PTFE FLUOROCARBON
AND/OR SILICONE OILS, GREASE,
SPRAY, OR WD40.
NO CATASTROPHIC FAILURE:
• No shaft scoring or shock load damage.
Liner dampens shock loads and vibration.
These bearings provide more surface
contact area than ball bearings.
• No corrosion or rust.
• No temperature induced bearing seizure.
Temperature range of -400�F to +500�F.
Operates with consistent friction and
load bearing characteristics throughout
temperature range. Liner allows heat
to dissipate through the shell.
BEARING LOAD:
• Frelon lined bearings can tolerate
up to 1500 psi over the portion of
the bearing that is carrying the load.
• These bearings carry 4 to 8 times
the load of ball bearings.
• A 1/2" I.D. Frelon bearing will carry as
much load as a 1" I.D. ball bearing.
WEAR RATE:
• Although wear rates are affected by
surface finish, shaft hardness, length
of travel, contamination and lubrication,
these bearings last on average 4 to
8 times longer than ball bearings.
BEARING PV:
• P = Pressure in psi on the projected area.
• V = Velocity of the wear surface in sfm.
• The maximum PV is 10,000 psi x ft./min.
BEARING SPEED:
• The maximum average linear
speed without lubrication is:
140 ft./min. - continuous
400 ft./min. - intermittent
• When lubricated, the maximum
continuous speed exceeds 400 ft./min.
CANTILEVERED LOADS:
• The distance between the bearings
and the drive source or load should
not exceed a maximum ratio of 2:1.
SHAFT FINISH AND HARDNESS:
• A shaft with a finish of 8-12 min. R
a
and a hardness of Rc 60 is recommended
for best results. Acceptable performance
can be attained with a finish of 8-16 min.
Ra
and a hardness of Rc 35.
