The Newport AB-4A Actuator Push Block is a spare interface component for manual linear stages in the 423, 433, 443, 426, and 436 series. It transmits actuator force to the stage mechanism while maintaining precision through spring preloading, eliminating backlash in the drive interface. The push block engages against hardened carbide inserts or steel rods on the stage, enabling repeatable linear positioning across scientific, industrial, and metrology applications.
Technical Specifications
• Product: AB-4A Actuator Push Block
• Type: Spare actuator interface component
• Manufacturer: Newport (MKS Instruments)
• Function: Force transmission and actuator-stage interface
• Design: Compatible with hardened carbide inserts or hardened steel rods
• Preload System: Spring-preloaded mechanism for backlash elimination
– Key Features
• Direct replacement for five Newport manual stage series
• Engineered to work with precision ball bearing stages (423, 433, 443)
• Compatible with crossed-roller bearing stages (426, 436) for high-load applications
• Provides stable, repeatable interface through spring preload architecture
• Designed for actuator tip engagement and force distribution
– Typical Applications
• Optical alignment and interferometry systems
• Precision laboratory positioning
• Industrial automation and assembly processes
• Quality control and measurement systems
• Metrology applications requiring sub-micrometer precision
– Compatibility & Integration
The AB-4A integrates directly with Newport manual stages offering either precision ball bearing construction (423, 433, 443 series) or crossed-roller bearing design (426, 436 series). It functions as both a spare component and direct replacement for existing actuator assemblies, maintaining force transmission efficiency and system accuracy across all compatible platforms.
