LINEAR MOTION SOLUTIONS - Brd. Klee A/S

Frictional Resistance
Linear Ball Bearings
FRICTIONAL RESISTANCE
The static frictional resistance of the Simplicity ® linear system
is so low that it is only slightly different from the kinetic
frictional resistance, enabling smooth linear movement from
low to high speeds. In general, the frictional resistance is
expressed by the following equation.
F = μ • W + f
F : Frictional resistance μ : Coefficient of friction
W : Load weight
f : Sealing resistance
The frictional resistance of each PBC linear system depends
on the model, load weight, speed, and lubricant. The sealing
resistance depends on the lip interference and lubricant,
regardless of the load weight. The sealing resistance of one
linear system is about 200 to 500 gf. The coefficient of friction
depends on the load weight, moment load, and preload.
TABLE 5 - COEFFICIENT OF LINEAR SYSTEM FRICTIONS (μ)
LINEAR SYSTEM TYPE MODELS COEFFICIENT OF FRICTION (μ)
Linear Bearing JP, EP, IP 0.002 to 0.003
AMBIENT WORKING TEMPERATURE
The ambient working temperature range for each PBC linear
system depends on the model. Consult PBC on use outside
the recommended temperature range.
Temperature conversion equation:
C = 5 9 (F - 32) F = 32 + 9 5 C
TABLE 6 - AMBIENT WORKING TEMPERATURE
LINEAR SYSTEM TYPE
MODELS
AMBIENT WORKING
TEMPERATURE
Linear Ball Bearing JP, EP, IP -20 to 80°C, -4 to 176°F
LUBRICATION AND DUST PREVENTION
Using PBC linear systems without lubrication increases the
abrasion of the rolling elements, shortening the life span. The
PBC linear systems therefore require appropriate lubrication.
For lubrication PBC recommends turbine oil conforming to
ISO Standards G32 to G68 or lithium base soap grease No.2.
Some PBC linear systems are sealed to block dust out and
seal lubricant in. If used in a harsh or corrosive environment
a protective cover should be used.
Technical Information
800.962.8979 • www.pbclinear.com 127