This needle roller cage assembly guides a single row of needle rollers within a JN-type cage, with a width of 12.0 mm and a net mass of 9.0 g. It reaches a limiting speed of 22900 1/min and a reference speed of 14300 1/min, which defines the maximum practical operating range under standard conditions. The cage design keeps the rollers evenly spaced and correctly aligned, reducing friction losses compared to a full complement arrangement. Being a cage assembly only, it requires a suitable shaft and housing bore to form the complete bearing arrangement, with the mating surfaces acting as the running tracks. This construction allows a compact radial section while supporting the stated speed range, making it suitable where axial space is limited and precise roller guidance is needed. Lubrication and sealing must be provided by the surrounding housing design, as the assembly itself carries no seals.