This Timken 15100 single cone tapered roller bearing, made of high-alloy steel, is suitable for high-load, moderate-speed applications. It has a stamped steel cage that evenly spaces rollers for reduced friction, vibration, and noise. Operating temperatures range from -54 to 120 degrees C (-65 to 250 degrees F). The bore diameter is 1.0000 inches and the width is 0.8125 inches. It is compatible with a single cup (outer ring, sold separately) and is open for lubrication applied in place. This bearing is used in industries such as automotive, mining, construction, and agriculture.