UniSlide® A15 Series – Scale and Vernier
This compact positioning slide includes a precision English or Metric scale on the base and offset vernier on the slider.
The smallest of the UniSlide Linear Stages with a body width of 1.5 inches, slider length of 1.5 inches and a carrying capacity of 15 lbs. horizontal load. The A15 can travel up to 25.5″ with the 1.5″ slider/carriage. Because of it’s light weight, the A15 Series is ideal for moving small sensors.
A15 Series UniSlides are comprised of an aluminum alloy extruded dovetail base with 60 degree opposing V-type ways. An aluminum alloy carriage that runs in the dovetail ways of the base. A15 lead screws are constrained and supported with pre-loaded Delrin® thrust bearings, which have pre-loaded ball bearings. The lead screw drive nut is a tension adjustable nut made of Delrin providing low friction, and minimal backlash.
Slide movement is controlled by a lead screw. There are several different diameter lead screws available for the A15 Series in 1/4″ and 7 mm. Each have different advance ratings.
Includes a precision English or Metric scale on the base and offset vernier on the slider. Measures position from 0.001″ or 0.05 mm.
Features
Maximum Horizontal Load Capacity – 15 lbs. (6.8 kg.)
Maximum Vertical Load Capacity – 10 lbs. (4.5 kg.)
Maximum Travel Distance – 25.5″ (64.77 cm)
Specifications
Factors such as size of the motor, size of the payload, travel distance, mounting direction/plane, etc. effect the actual capability of any assembly. Please contact Velmex Application Engineers to configure a system that will meet your exact requirements.
UniSlide® A15 Dimensions
| Standard | Metric | |
| Travel Distance | 1.5" - 25.5" | 3.81 – 68.77 cm |
| Base Length | 3.0" - 27.0" | 7.62 – 68.58 cm |
| Slider Length | 1.5" | 3.81 cm |
| Weight | 0.31 – 1.82 lbs. | 0.14 – 0.83 kg. |
| Height** | 0.56" | 1.42 cm |
| Width | 1.5" | 3.81 cm |
‡ Standard travel distances available are in 3″ increments.
Available in a variety of English and Metric lead screw pitches.
| Operating temperature | 0 to 180° F (-18 to 82° C) |
Properties of Velmex Stages - Information on stage composition, tolerances, wear and design for specialty applications.
Load Parameters - Definitions and parameters that effect the various load ratings.
UniSlide® A15 Load Calculations
| Load Capacity | lbs. | kg. |
| Maximum Horizontal Load | 15 lbs. | 6.8 kg. |
| Horizontal Central Load | 15 lbs. | 6.8 kg. |
| Cantilevered Load | 20 lb-in | 2.26 N-m |
| Vertical Central | 10 lbs. | 4.5 kg. |
| Load Normal (LN)* | 5 lbs. | 2.27 kg. |
| Load Thrust (LT)* | 1 lbs. | 0.45 kg. |
| Cantilever Side (LCS)* | 5 lb-in | .6 N-m |
| Cantilever Inline (LCI)* | 10 lb-in | 1.13 N-m |
* Normal Operating Loads are less than the maximum.
Lead Screw Specifications
English Thread Lead Screws
| Pitch | Backlash Typical | UniSlide™ Code | |||||||
| Turns per inch | Advance per revolution | English | Metric | Degrees | Standard Accuracy | With Scale and Vernier - Standard Accuracy | With Graduated Knob - Precision Accuracy | Division on Graduated Knob | Lead Screw Diameter |
| 40 | 0.025" | 0.00013" | 0.003 mm | 1/200 rev or 1.8° | C | CE | P40 | 25 | 1/4" |
| 20 | 0.05" | 0.00025" | 0.006 mm | 1/200 rev or 1.8° | B | BE | P20 | 50 | 1/4" |
Metric Thread Lead Screws
| Pitch | Backlash Typical | UniSlide® Code | |||||||
| Turns per cm | Advance per revolution | English | Metric | Degrees | Standard Accuracy | With Scale and Vernier - Standard Accuracy | With Graduated Knob - Precision Accuracy | Division on Graduated Knob | Lead Screw Diameter |
| 10 | 1 mm | 0.0002" | 0.005 mm | 1/200 rev or 1.8° | K1 | K1M | Q1 | 100 | 7 mm |
| 5 | 2 mm | 0.00039" | 0.01 mm | 1/200 rev or 1.8° | K2 | K2M | Q2 | 200 | 7 mm |
| Repeatability | 0.00015″ (4 microns) typical |
| Straight line accuracy | 0.003″ (0.076 mm) over entire travel distance. Higher accuracy 0.0015″ (0.038mm) available |
| Screw lead accuracy | 0.003″/10″ (0.076 mm/25 cm) 0.0015″/10″ available. Consult factory. |
Options/Accessories for A15 UniSlide® Assemblies
A1500XY Adapter Plate
To mount an A15 or MA15 Series UniSlide® to another A15 or MA15 Series in an XY configuration.
A1500XZ Adapter Plate
Used to mount an A15 to another A15 Series UniSlide® or to a MA15 Series carriage in XZ configuration.
A2500XY Adapter Plate
To mount an A25 or MA25 Series UniSlide to another A25 or MA25 Series or to an A15 or MA15 Series in XY.
A2501XZ Adapter Bracket
To mount an A25 or MA25 Series UniSlide to another A25 or MA25 Series (6″- 9″) or to an A15 or MA15 Series (6″- 9″) in XZ. (The A25 or MA25 would be the base horizontal stage. The other stage would be mounted vertically.)
B2503XZ Adapter Bracket
To mount an A25 or MA25 Series UniSlide to another A25 or MA25 Series (over 9″) or to an A15 or MA15 Series (over 9″) in XZ.
B5990TXZ-BK Adapter Plate
Use this bracket to mount two B5990TS Rotary Tables at right angles to each other or to mount a B5990TS to a UniSlide® Linear Stage.
UniSlide® Slider Lock
This lock is mounted at the mid-point on the base and is tightened to prevent slider movement.
UniSlide® Thumbscrew-on-Lead-Screw Lock
An easy method to affix the slider utilizing a simple thumbscrew on the lead screw at the end bearing block of each axis.
UniSlide® Traveling Slider Lock (-TSL)
This lock attaches to the slider to lock the carriage in place.
A15 Alternative Knobs
A variety of knob styles can be substituted for the standard knob on any UniSlide® Assembly.
B29 Platform Shelf
Platform shelf from UniSlide® A25 and MA25 Elevating Tables that can be used on vertical UniSlide® Assemblies.
Left-Right Screw Motion
This configuration enables two carriages to travel along a shared axis using a single lead screw while moving towards or away from each other.
Optional Finishes
Many Velmex Products come standard with a brushed aluminum finish. Optional finishes including Black Anodizing are available.
Retainer Nut Wrench
Custom-designed wrench specifically made to adjust and remove the threaded retainer nut found on select UniSlide® Assemblies.
Slider Lengths
All UniSlide® Assemblies are available with a variety of carriage (slider) lengths to suit different application needs.
Two Independent Carriages
Separate and precise positioning along the same linear axis using two lead screws.
UniSlide® Revolution Counter
The mechanical counter provides a convenient lead screw revolution count. This aids in determining position and providing a reference number for the location of the carriage / slider.
UniSlide® Vacuum Modifications
Stages for use in vacuum environments can be customized with special materials, coatings, and seals to ensure compatibility with low-pressure conditions and minimize outgassing
Velmex offers a multitude of options and accessories for all its products. Usually an option or an accessory will address your requirements. When it doesn’t, we can make custom modifications, including:
• Additional holes or slots. (A drawing is required.)
• Intermediate plates to mount your payload
• Special or in between lengths of the dovetail base
• Lead screw shaft extensions
• Choice of drive nut materials, including brass and Vespel
We can also offer customized configurations to address special environmental and vacuum applications.
Applications and Examples
Note: the example displayed may be a custom configuration, designed to the customer’s specifications; and not offered as a standard product. Custom configurations could contain custom, externally-fabricated components.
Downloads
The majority of CAD drawings found in our Technical Library are Step (.stp) files. You will also see .dxf, .dwg, .sat and .pdf files. For .STP files, you may need to right click on the download button and save the “target” or “link”. If you require a different format or cannot located the drawing you require, please contact us.
| Title | Summary | File Type | Link | hf:file_type |
|---|---|---|---|---|
| A1503sv.stp | Lead screw with scale and vernier, 1.5″ Travel | stp | stp | |
| A1506sv.stp | Lead Screw with scale and vernier, 4.5″ Travel | stp | stp | |
| A1509sv.stp | Lead Screw with scale and vernier, 7.5″ Travel | stp | stp | |
| A1512sv.stp | Lead Screw with scale and vernier, 10.5″ Travel | stp | stp | |
| A1515sv.stp | Lead Screw with scale and vernier, 13.5″ Travel | stp | stp | |
| A1518sv.stp | Lead screw with scale and vernier, 16.5″ Travel | stp | stp | |
| Manual UniSlide® Dimensional Drawings | Dimensional drawings for the 5 Series of Manually Operated UniSlide® Linear Stages | |||
| UniSlide Manual Spec Overview | Overview of Manual UniSlide® Assemblies | |||
| UniSlide® Users Manual | Operating and Service Manual for UniSlide® Stages |
Knowledge Base
| Motion | Linear |
|---|---|
| Maximum Travel | 80" (203.2 cm) |
| Minimum Travel | 5" (12.7 cm) |
