Bearing NTN HK1512FM

HK1512FM, HK 1512 FM, НК1512, НК 1512 NISSAN 23341-V0600, YANMAR X-22501451, YANMAR X-2250145100, HITACHI 2250-1451, CARGO 140384, 140495, IKA 8.8829.0, WBD 8-8101 SUFFIXES: F-bearing refers to bearings manufactured according to Premium Shell technology, M-bearing is heat treated after assembly HK-F - new type of needle roller bearingsThe advantages of roller bearings with needle roller type HK-F (compared to current standard needle roller bearings): - Service life: three times longer; - Permissible static load: 1.5 times more; - Reduction and stabilization of the original installation: the bearings can be pressed together on both sides by production using the “Pre-bent” processNTN has optimized the specifications of each bearing component in order to develop a new series of long-life exhaust needle roller bearings. The outer ring is carbon chrome-molybdenum steel. Higher internal hardness resists permanent deformation from static load. As a result, the HK-F type can be used under static load conditions with an increased safety factor compared to current standard needle bearings. The optimal shape of the outer ring, including the chamfer and the surface of the outer diameter, contributes to the smooth pressing of the bearing into the housing, including on the automatic assembly line. NTN has introduced a large-bore rib to advance the lubricant flow into the bearing from the outside. V-shaped separator improves lubricant flow to the inside of the bearing and from the inside. At the same time, the design of the V-shaped separator ensures the stability of the roller, thereby prolonging the service life of the bearing. In the NTN standard, a special heat treatment of the needles (specialized carbonitriding) was used with proven results in increasing the service life. The coronation applied reduces the concentration of stresses at the ends of the roller (edge ??stresses) caused by misalignment of the assembly and a large load. This innovation contributes to longer bearing life. The “Pre-bent” method is the result of an unconventional manufacturing process. In this process, the rollers and separator are first assembled into the outer ring, and the bendable edge rib is curved before heat treatment. This gives the edge (from the side of the curved edge) the same hardness as in other areas. At the same time, this eliminates the traditional limitation of the fact that the bearing must be pressed with the aid of a device mounted on a marked side surface. This allows the bearing to be adjusted in any direction. Moreover, optimal heat treatment increases bearing life.