The NKX20Z speed combined bearing is designed to support both radial and axial loads in a compact form. It combines needle roller elements with a thrust ball bearing and a cage to provide smooth operation at speeds, reduced assembly steps, and reliable load handling in spaceconstrained applications. The bearing is identified as NKX20Z, with the related designation NAX2030Z. Key benefits speed capability: needle roller elements reduce friction and allow fast rotation. Combined load support: handles both radial and axial loads in a single compact unit. Integrated cage: maintains precise roller spacing for stable operation and reduced wear. Spaceefficient design: a compact 20x30x35x30 mm footprint suitable for small machines and tight assemblies. Clear part identity: available as NKX20Z and associated NAX2030Z designation for compatibility and replacement. Key specifications and attributes Type: Combined bearings, needle roller thrust ball bearing with cage Model and designation: NKX20Z; NKX20 Z; NAX2030Z Dimensions: 20x30x35x30 mm Configuration: Needle rollers plus thrust ball bearing with cage Speed capability: Optimized for speed operation Purpose: Designed to provide axial and radial load support in a single compact unit Functional features The needle roller component offers load capacity in a small package, contributing to speed performance. The thrust ball portion provides robust axial load handling. The cage maintains uniform roller spacing, improving rotation smoothness and longevity. The combined design reduces the need for multiple bearing components and simplifies installation. Compatibility and fit Intended for use in systems designed to accept NKX20Z family bearings and the NAX2030Z designation. Dimensions and configuration are specified for proper mounting in compatible housings and shafts that match the NKX20Z / NAX2030Z code. Performance considerations Optimized for speed applications where both axial and radial loads are present in a constrained space. The integrated design helps maintain alignment and reduces assembly complexity, contributing to consistent performance. Application use cases Small speed spindles and spindle cartridges in compact machining centers or milling machines. Precision linear axes and actuator assemblies in automation equipment where axial and radial loading must be managed in a limited space. Robotic joints or drive systems requiring reliable combined load support with a compact bearing package. Installation and maintenance notes Install using standard bearing mounting practices appropriate for NKX/Z type combined bearings. Ensure bore and mounting surfaces meet required tolerances for proper fit. Use appropriate lubrication and follow routine inspection practices to monitor for wear, contamination, and proper alignment. Quality and reliability The NKX20Z designation, together with NAX2030Z, reflects the intended compatibility and performance characteristics for speed, combinedload applications. The bearing assembly is designed to provide durable performance in demanding environments within its specified size and configuration.