CONICAL ROLLER BEARING

• Main Authors: FUJIKAKE YASUHITO, KAWAI TAKASHI, ISOBE NOZOMI
• Format: Patent
• Language: English; Japanese
• Published: 24.09.2020
• Subjects: BEARINGS; BLASTING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; THERMAL INSULATION IN GENERAL; WEAPONS

To provide a conical roller bearing which can lower torque while suppressing the lowering of the rigidity of a cage.SOLUTION: A conical roller bearing comprises a cage 5 for accommodating conical rollers 4. The cage is formed of a metal material, and composed of a small-diameter side annular part 6 continuing at small end face sides of the conical rollers 4, a large-diameter side annular part 7 continuing at large end face sides of the conical rollers, and a plurality of column parts 8 for connecting the annular parts. The column part facing a pocket has a face-pressing processing face 11 at an inner side of its side face 9c in a radial direction, and the face-pressing processing face is formed of a straight part 11a located in a center of the pocket in an axial direction, pocket corner R-parts 10b located at both ends of the pocket in the axial direction, and an escape part 11b formed between the straight part 11a and the pocket corner R-part 10b. The escape part 11b gradually becomes larger in an escape amount Δ toward the pocket corner R-part 10b from an end of the straight part 11a in the axial direction, and is smoothly connected to the straight part 11a.SELECTED DRAWING: Figure 2 【課題】保持器強度の低下を抑えつつ、低トルク化が得られる円すいころ軸受を提供する。【解決手段】円すいころ４を収容する保持器５とからなる円すいころ軸受であって、保持器が、金属材料で形成され、円すいころ４の小端面側で連なる小径側環状部６と、円すいころの大端面側で連なる大径側環状部７と、これらの環状部を連結する複数の柱部８とからなり、ポケットに面する柱部は、その側面９ｃの径方向内側に面押し加工面１１を有し、面押し加工面は、ポケットの軸方向中央に位置するストレート部１１ａと、ポケットの軸方向両端に位置するポケット隅アール部１０ｂと、ストレート部１１ａとポケット隅アール部１０ｂとの間に形成された逃げ部１１ｂとからなり、逃げ部１１ｂは、ストレート部１１ａの軸方向端からポケット隅アール部１０ｂに向けて徐々に逃げ量Δが大きくなると共に、ストレート部１１ａに滑らかに接続されている。【選択図】図２