Q: How do I size a WIESEL mechanical linear drive
for a specific application?
There are many factors that must be taken into account when sizing
a Wiesel linear actuator. For example, with a ball screw or belt
system we have to take into consideration the feed forces the unit
will see. This can be due to acceleration of a mass or some force
like cutting or pulling. Since most Wiesel actuators have integrated
linear bearings we also need to look at the factors that effect
the bearings. Where is the load relative to the carriage? How big
is the load? Are there any "off axis" forces? As you can
see, all these separate factors can make selection difficult. Fortunately
we have a software package available to help in the selection of
a Wiesel product called Wiesel Manager. You can request it in the
"More Info/Catalogs" section of our web site. Alternatively
you can give us a call at (888) 324-0858 and we can walk you through
Q: How do I size a ball screw drive?
There are several criteria that must be considered in the proper
selection of this product including peak and continuous forces,
velocities, life, duty cycle, acceptable error and backlash, mounting
configuration, etc. Precision Technology has on staff product and
application engineers that can assist with your need. Please call
us at (888) 324-0858. We can help you with your application and
send a comprehensive catalog.
Q: Why would I need a Spiracon® planetary roller screw?
When compared to ball screws Spiracon® roller screws have much
higher load ratings. Load ratings are typically 3 to 4 times higher
and therefore offer a much longer life span. They can survive very
harsh environments and are perfect for mission critical components.
When compared to hydraulics they offer a safer, quieter, and cleaner
alternative. They also provide higher system efficiency and only
draw power while in motion so the cost of ownership is lower.
Q: How do I size a screw jack?
Screw jacks are intended solely for providing a force in one direction.
Because of that they are relatively easy to apply. Each model has
a tonnage rating. Select your model based on your force requirement.
For longer strokes we need to consider buckling and whipping of
are often used in sets of two or four. In combination with a PT
spiral bevel gearbox all screw jacks can be driven by one motor.
PT also supplies couplings and line shafts for connecting it all
Lead screw jacks
are rated for about 30% duty cycle. If we need higher duty cycles
we move to the ball screw jack line. We have an extensive catalog
covering our wide range of screw jacks. You can request it via this
web site or call us at (888) 324-0858.