| | | Engineering Data Design Advantages of Linear UniSlide Assemblies • Compact design yields long travel in a short work space • A simple, reliable design easily adaptable • Modular components facilitate multiple axis system • A broad variety of lengths, sizes and feature • Customizing to accommodate special circumstances or uses Load Capacity The size of the industrial slide selected for a given application will depend on user requirements. The chart below provides maximum dynamic load capacities for each model for three different load positions. *A25 Series with W1 or P10 lead screws: LT=30lbs./13.5kg. Static loads are twice the dynamic load values given above. | | Orientation: Up, Down, Left and Right The reference position for linear UniSlide Assemblies is with the base down, the slider up, and the knob, if any, facing the user. | | Base Stiffness For increased base stiffness, three of our A-series bases — A25, A40 and A60 — are also available in the deeper B Series style. This extra stiffness is useful when the full length of the base cannot be adequately supported. Typical stiffness of the B Series base is two to four times greater than the A-series. See B Series bases on page 1.54. Deviations from Straightness There are three types of deviations from straightness than can occur: X, Y and Z. Picture a UniSlide Assembly resting base down on a flat surface, with its linear motion in the X or longitudinal direction. A departure from straightness in the upward direction — the Z axis — is designated as the bow error. A deviation in the horizontal direction — the Y axis — is horizontal run out, often referred to simply as run out. And a twist in the direction of the slide — the X axis — is called twist. The upper limits for these deviations from straightness, as determined by our manufacturing processes, are: • Bow* 0.002" per foot • Run Out 0.001" per foot • Twist 1 milliradian per foot • As installed, bow can be affected by the degree of flatness of the supporting surface and the relative tension of the mounting screws. | | |
| | | * A25 Vertical Central Load Capacity with a 10 pitch (W1 and P10) screw is 30 lbs./15.5 kg. to due to a stronger thrust bearing manufacturer design. Also, for greater base stiffness, Series A25, A40 andAOO are available in deeper cross sections. See the B Series Bases on page 1.54 for more information. | | |