Parker MX80S Series, Руководство по эксплуатации продукта

Страница: 18 / 36

MX80S Series Product Manual
18
Parker Hannifin Corporation
EMN Automation - Parker
Irwin, Pennsylvania
Linear Motion Guide Bearing Life/Load Computation
Example:
Given a MX80S - T02 with a 2 kg load mounted 35 mm off of
the end of the carriage in line with the travel path. The lever
arm is 35 mm + 40 mm (center of table to edge) = 75 mm
This loading produces a pitch moment. Therefore, using the
Pitch curve for the 50mm travel draw a vertical line up from
the x - axis at the 2 kg load point until it intersects the 75
curve. The point of intersect is the predicted bearing life of
the table. In this example the life is 10,000 km of travel
To predict the travel life of the MX80S cross roller bearings under a moment load use the curve with
the corresponding lever arm and given load. Factor in dynamic as well as static loads. For com-
pound loading (multiple moments) use an “ effective lever arm of 2x actual lever arm.
Life-Moment Chart 50mm travel Pitch-Yaw Loading
25
50
75
100
150
200
250 300
100
1000
10000
100000
0 1 2 3 4 5 6 7 8
Load [kg]
L
if
e
[
k
m
]