Overview
The Velmex A4000 UniSlide is a precision linear positioning stage designed for manual control applications requiring reliable, repeatable motion. With a 4-inch body width and slider length, the A4000 delivers smooth, accurate positioning in scientific, research, machining, instrumentation, and industrial environments. This single-axis stage is fully modular and can be combined with other UniSlide units to create multi-axis XY and XZ assemblies for complex positioning needs.
Key Features
- 100 lbs horizontal load capacity with 4″ standard slider carriage
- Travel distance up to 38″ with standard slider configuration
- Aluminum alloy extruded dovetail base with 60-degree opposing V-type ways
- Lead screw supported by steel thrust bearings and snap ring retainer for durability
- Low-friction Delrin drive nut with minimal backlash
- Manual hand-crank or screw-drive operation with multiple configuration options
- American-made precision construction since 1967
- Modular design compatible with other UniSlide stages for XY/XZ configurations
Technical Specifications
- Series: A40 (A4000 family)
- Body Width: 4 inches
- Slider Length: 4 inches (standard)
- Maximum Horizontal Load: 100 lbs (45.4 kg)
- Travel Range: Up to 38 inches with 4″ slider
- Base Construction: Aluminum alloy extruded dovetail
- Carriage Material: Aluminum alloy
- Ways Configuration: 60-degree opposing V-type
- Drive Nut Material: Delrin (low friction, minimal backlash)
- Bearing Support: Steel thrust bearings with snap ring retainer
- Finish: Brushed aluminum (black anodizing available)
- Operation: Manual (hand-crank or screw-drive)
- Certifications: American-made precision instrument
Typical Applications
- Laboratory measurement and positioning
- Optical focusing and alignment
- Inspection and quality assurance (QA/QC)
- Probe and sensor positioning in instrumentation
- Manufacturing assembly and fixturing
- Research and scientific data collection
- Film and animation work
- Antenna and component alignment
- Medical and biological analysis systems
- Automated dispensing and material handling (low-speed)
Compatibility & Replacements
Compatible With
- Other Velmex UniSlide A40 Series stages for multi-axis assembly
- Velmex A25 Series stages (via adapter plates for XY configurations)
- Velmex UniSlide A4000XY adapter plates for two-axis motion
- Velmex UniSlide A4000XZ adapter plates for vertical/perpendicular mounting
- Velmex turntables via A4000 adapter plate mounting
- Standard lab benches and custom machine frames
- Optical table systems with 1/4″-20 or equivalent mounting threads
Replaces / Drop-In Replacement For
- Other A4000 Series UniSlide configurations with same slider carriage and base footprint
- Legacy manual linear stages with similar 4-inch body dimensions and 100 lbs load rating
- For specific model cross-reference, verify your current part number against Velmex A40 Series catalog
Works With
- Velmex VXM motor controls (for motorized MA40 upgrades)
- Velmex VRO encoder readouts (optional position feedback)
- Standard hand tools for manual adjustment
- Custom coupling adapters and mounting hardware (available from Velmex)
- Various spindle and sensor attachments via carriage slots
- Third-party stepper or servo motors (via external drive conversion)
