Custom Tables & Fixtures
When the size of the test specimen exceeds the armature dimensions of the electro-dynamic shaker, adding a customized head expander or slip table offers an effective solution—expanding the mounting area to meet specific testing requirements.
Premax offers both standard and fully customizable options, with table surfaces available in high-strength magnesium alloy or aluminum alloy to suit different application needs.
Using a precision casting process and optimized material composition, our magnesium alloy fixtures provide excellent strength-to-weight ratios and superior frequency response, making them ideal for demanding vibration testing environments.
Premax delivers a full range of slip tables, head expanders, and related fixtures—allowing users to make one-stop, tailored selections that ensure compatibility and performance.
Head Expanders
Square
Round
Core Spcifications
- Frequency range: Up to 2,000 Hz
- Size range: Up to 100 x 100 inches
- Available in metric and imperial systems
Material Options
1. High-Performance Magnesium
- Premium lightweight solution
- Optimal strength-to-weight ratio
2. Aluminum Alloy
- Reliable performance
- Cost-effective option
Configuration Options
- Circular design
- Square design
- Custom shapes available
- Extends armature table mounting surface
- Accommodates larger payloads
Lightweight yet ultra-stiff construction
Crafted as a single‑piece, constructed from magnesium alloy,it offers exceptional specific stiffness and strength, while reducing mass by over 30% compared to aluminum—resulting in elevated first-mode resonance and enhancing shaker performance and enabling higher-frequency tests with reduced fixture weight.
Flexible Options for Various Test Needs:
- Shape options: Available in round or square tabletop designs to suit different test setups.
- Mounting holes: Comes with standard M8, M10, and M12 threaded inserts, with custom hole patterns available on request.
- Custom fixtures: Fixtures can be designed according to the shape and size of your test specimen for secure and accurate mounting.
- Multi-sample support: Large surface area allows multiple samples to be tested simultaneously, improving test efficiency.
Custom Special Table Designs:
- All HE series head expanders undergo finite element analysis (FEA) and are structurally optimized to ensure high stiffness, low weight, and excellent dynamic performance.
- Optional guided systems with linear bearings or pneumatic supports allow secure testing of large, heavy, or eccentric payloads—protecting the shaker suspension and preserving test integrity.
Slip Table
Core Technology
- Oil-lubricated continuous pressure system
- Precisely machined magnesium alloy tool plate
- Available in sizes from 300mm to 1m square
- Enables X and Y axis testing through 90° rotation
Applications & Integration
- Converts vertical (Z-axis) shaker motion to horizontal (X/Y) testing
- Compatible with temperature and humidity chambers
- Suitable for three-axis testing when integrated with Premax systems
- Adaptable to existing and new shaker systems
Key Design Features
- Stiffened and welded steel body for stability
- High mass-to-force ratios
- Compact construction
- Precision machining
1. Premium: Magnesium Alloy
- Lightweight construction
- Superior performance
- Optimal dynamic characteristics
2. Economic: Aluminum
- Cost-effective alternative
- Maintains quality standards
- Balance of performance and value
Critical factors to consider:
- Specimen dimensions
- Load capacity requirements
- Maximum anti-overturning moment
- Specific testing conditions
- Sliding plate area and thickness (affects upper frequency limit)
Performance Benefits:
- Extended equipment lifespan
- Maximum operational efficiency
- Quick axis switching capability
- Comprehensive testing options
- Custom configurations available
Environmental Testing:
- Seamless integration with environmental chambers
- Enables combined environmental stress testing
- Complete three-axis testing capability
Special Customized Fixtures
