Head Expander & Slip Table
When the size of the test parts is larger than the size of the armature of the electro-dynamic shaker， the addition of an auxiliary head expander and slip table can meet the customer’s requirements for shaker expansion, increasing the test part installation area. The high-quality finishing casting process and the excellent material ratio ensure the extension table has a better strength-to-weight ratio and better frequency response characteristics.
Premax provides users with a complete range of slip table, head expander and other supporter, so users can make a one-stop supporting choice.
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
The slip table extends the capabilities of the electrodynamic vibration shaker, enabling three-axis vibration testing. It can also be integrated with temperature and humidity chambers to form a combined environmental testing system. The ST Series Slip Table is compatible with any vibration shaker, providing an optimal testing platform for horizontal testing. Designed and manufactured based on an integrated concept, the steel structure base offers a robust foundation for calibrating both the electrodynamic vibration shaker and the slip table. All slip tables are constructed using precision-machined natural granite and high-quality guide bearings to meet diverse application requirements. The reinforced welded base features excellent reaction force and damping performance, while the built-in vibration isolation system minimizes vibrations transmitted to the ground, preventing interference between testing equipment. Depending on specific application needs, "V-Guide Bearing" and "T-Guide Bearing" options are available.
Head Expanders
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
Fixtures
Key Features
- Purpose-built for specific test requirements
- Critical for vibration test system accuracy
- Custom designs available
- Precision-engineered components
Manufacturing Standards
- Aerospace-grade production facilities
- Precision machining
- Rigorous quality control
Durability Features
- Non-machined parts: Protective paint coating
- Machined parts: Special protective coating
- Enhanced corrosion resistance
- Vibration testing
- Environmental testing
- Custom testing solutions
- Research and development
- Quality assurance testing
Supporter
Automatic Centering Controller
The automatic centering system utilizes a non-contact, high-resolution displacement sensor and a PID+fuzzy closed-loop control algorithm to achieve precise automatic centering of the vibration table’s zero position in both static and dynamic conditions. The dynamic centering accuracy can reach within ±1 mm.
Features
- Ease of Operation:
Simple to operate and user-friendly. - Interlocked Emergency Stop Switch:
Ensures safety and reliability. - Static Adjustment:
Automatically adjusts the center position in static conditions. - Dynamic Stability:
Maintains the armature’s central position during dynamic motion.
Assembly Fixture
Fixture can assist customers in fixing different Test targets on the shaker to complete Test. Fixtures can be customized according to customer needs.
Features
- High Precision：
Ensures accurate positioning of components during assembly, minimizing errors and improving precision. - Repeatability：
Designed to provide consistent and stable performance, allowing repeated use with identical assembly results. - Custom Design：
Typically tailored to specific product structures and assembly requirements, accommodating unique shapes or functions. - Efficiency：
Reduces assembly time and optimizes workflow, increasing overall production efficiency.
Auxiliary Stay Bearing
Auxiliary support and guidance devices enhance head expander load capacity and offset load resistance. Premax Technologies offers solutions for reliable large-specimen testing while protecting the vibration shaker’s suspension system.
Features
- Precision Machined Surface:
Ensures a uniform and smooth table surface. - Lightweight Materials:
Magnesium alloy available for applications with strict total moving mass requirements. - Thermal Compatibility:
Can be used with insulating pads and temperature control chambers. - System Compatibility:
Designed to integrate seamlessly with the customer's existing vibration shaker system.
Air Spring Isolator
The foundation-free vibration isolation system is ideal for situations where it is inconvenient or challenging to construct a foundation at the customer's site. High-quality air springs elastically support the entire vibration shaker, effectively reducing the shaker's excitation impact on the ground.
Features
- Simplified Installation:
Eliminates the need for complex foundation construction. - Excellent Vibration Isolation:
Provides superior isolation performance. - Portability:
Facilitates easy relocation and mobility of the equipment.
The slip table extends the capabilities of the electrodynamic vibration shaker, enabling three-axis vibration testing. It can also be integrated with temperature and humidity chambers to form a combined environmental testing system. The ST Series Slip Table is compatible with any vibration shaker, providing an optimal testing platform for horizontal testing. Designed and manufactured based on an integrated concept, the steel structure base offers a robust foundation for calibrating both the electrodynamic vibration shaker and the slip table. All slip tables are constructed using precision-machined natural granite and high-quality guide bearings to meet diverse application requirements. The reinforced welded base features excellent reaction force and damping performance, while the built-in vibration isolation system minimizes vibrations transmitted to the ground, preventing interference between testing equipment. Depending on specific application needs, "V-Guide Bearing" and "T-Guide Bearing" options are available.
V-Guide Bearing
The V-Guide Slip Table consists of a horizontal tabletop, V-guide rails, a head expander, a granite slab, a slip table base, and a built-in low-pressure oil source. Equipped with an internal oil pump, it features a compact structure and convenient operation. The number of V-guides varies based on the size of the slip table. This type of V-guide rail offers excellent anti-overturning capability.
T-Guide Bearing
The T-Guide Slip Table consists of a horizontal tabletop, T-guide rails, a head expander, a slip table base, and an independent medium-pressure oil source. T-guide rails deliver exceptional dynamic performance, with each bearing equipped with its own feedback system, ensuring excellent parallel operation capabilities. The design allows for straightforward assembly while maintaining high performance standards. Optional mobility solutions for the table include rail-guided movement or air flotation movement.