Profile Rail Linear Guides

Profile Rail Linear Guides
Intrinsic Resistance
The intrinsic resistance is the measured actuation
force required to move the guide at a constant velocity,
without lubrication, regardless of load. It consists of
the seal drag (larger component) and force required
to circulate the rolling elements (smaller component).
The intrinsic resis tance can be assumed to be a
constant for linear guides carrying more than 5% of
their dynamic load rating (C). For guides loaded below
that value, the force required to circulate the rolling
elements will increase.
The following chart shows the intrinsic resistance, D int ,
for different types and sizes of linear guides.
Inertia of Moving Components
Inertia is directly related to the mass and acceleration
by the following equation :
F inertia = Ma
Viscose Drag of the Lubrication
The viscose drag of the lubricant is dependent upon the
viscosity of the lubricant selected.
Preload
Preload of the assembly has an effect on intrinsic
resistance, the greater the preload the greater the
intrinsic resistance to move the guide.
500 Series Ball Profile Rail
Size Carriage Style Carriage Style
A, C B, D
D int (N) D int (N) D int (N)
Preload 0.03C 0.13C 0.03C 0.13C
15 7 15 8 14
20 10 16 11 18
25 13 22 14 22
30 16 26 19 30
35 23 37 25 41
45 27 44 30 49
Values for lubricant oil VG 68, speed 0.1 m/s
500 Series Roller Profile Rail
Size Carriage Style Carriage Style
A, C B, D
D int (N)
D int (N)
25 17 18
35 35 51
45 53 60
55 98 124
65 — 170
Value for 0.13 C Preload, lubricant oil VG68, speed 0.1 m/s
AccuMini Linear Guide
Size
Carriage Style
AA
D int (N)
10 0.9
15 2.8
20 7.0
Values for clearance preload, no lubricant
Engineering
Guide
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