Side thrust
The timing belt drive to be selected must have a maximum permissible side thrust which is greater than the calculated value.
F < FX
If the available side thrust is too low, either a larger timing belt drive must be selected or the acceleration or deceleration time must be increased.
Horizontal application:
F = (m a + FR)·Si
Vertical application
F =( m·a+ FR + m·g)·Si
m = ms + mN
FR = m · g · coefficient of friction1)
No safety allowance is made for a possible belt rupture in vertical installations. The load can drop in an uncontrolled manner. Danger of injuries!
Drive torque
Order specifications
LGes = stroke + width of carriage + end frames + safety allowance.
Stroke = max. working range.
Max. travel = stroke + safety allowance (standard = 20 mm, different lengths on request of the customer).
Note:
The required braking or acceleration distances are a part of the stroke.
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