Needle roller bearing NKIS100 carries radial loads within a compact cross-section, achieved through a full complement of needle rollers running on an inner ring, with an outer ring featuring two flanges that locate the roller set axially. Bore diameter is 100.0 mm, outside diameter 135.0 mm, width 32.0 mm, and mass is 1.32 kg. The cage is of standard design. Limiting speed is rated at 4050 1/min, with a reference speed of 2600 1/min. The two-flange outer ring allows the bearing to take up light axial guidance of the roller set while the inner ring provides a hardened raceway matched to the shaft seat, simplifying mounting without a separate sleeve. As a single-row design with a standard cage, it suits arrangements where radial load capacity must be maximized within limited radial space, and where the shaft can serve directly as the inner raceway surface. Speed ratings indicate the thermal and kinematic limits under standard lubrication conditions, so grease or oil supply should be selected to keep operation within the reference speed for continuous duty.