Needle roller bearings are essentially cylindrical roller bearings except that their cylindrical rollers have a length 3 to 10 times their diameter (versus less a length less than 3 times their diameter). Therefore, the ratio of the bearing outside diameter to the inscribed circle diameter is small, and they have a rather high radial load capacity.Even though they have a low cross section, precision needle roller bearings have a high radial load capacity and are exceptionally suited for bearing applications where radial space is limited. Needle roller bearings incorporate rollers that are three to ten times longer than their diameter and exhibit a relatively large radial load capability.  The M-type cage and roller assemblies contain controlled contour rollers to deliver high durability even under heavy loads or misaligning operating conditions. Needle roller bearings are bearings with cylindrical rollers that are small in diameter relative to their length. The ends of the rollers are relieved slightly to modify the line contact between the rollers and raceways. This prevents stress peaks at the roller ends to extend bearing service life. In spite of their low cross section, needle roller bearings have a high load carrying capacity. Therefore, they are extremely suitable for bearing arrangements where radial space is limited.