Two precision inner ring needle roller bearings in a compact twopiece set. This pack includes NKS25 and NKS28, providing two common inner diameter options in a single . Included bearings and sizes NKS25: inner diameter 25 mm, outer diameter 38 mm, height 20 mm NKS28: inner diameter 28 mm, outer diameter 42 mm, height 20 mm Key benefits radial load capacity in a compact envelope, suitable for spaceconstrained applications Precision inner rings for accurate shaft seating and consistent performance Low crosssection and smooth operation due to needle roller design, reducing friction and wear Versatile twosize set in one package, enabling quick matches to two nearby bore requirements Simple replacement and maintenance with standardized NKS sizing Key attributes Functionality: precision inner ring needle roller bearings Size options: NKS25 (25 x 38 x 20) and NKS28 (28 x 42 x 20) Fit and compatibility: suitable for shafts and housings designed for NKS25/28 bearings Performance: designed to support radial loads with a compact crosssection and reliable rotation Material: construction described as precision components for inner rings (material not specified) Applications and use cases Spindle and shaft assemblies in small machine tools where space is limited and precise innerring support is required Compact gearboxes or drive assemblies that demand two nearby bore options and reliable radial support Robotic joints or linear actuation systems requiring precise innerring seating and smooth, repeatable motion Usage guidance Confirm shaft diameter and housing bore match the NKS25 or NKS28 dimensions before installation Inspect for proper seating of the inner rings to ensure clearance and performance Use appropriate lubrication and handling practices for needle roller bearings to extend service life This twopiece set delivers versatile sizing and precise innerring performance in a compact package, making it suitable for applications that require reliable radial support within tight spaces.