BALL BEARING FOR MOTOR

• Main Authors: TOMURO TAKAMITSU, YAMAMOTO KOJI, SONODA KENTARO
• Format: Patent
• Language: English; Japanese
• Published: 12.04.2018
• Subjects: BEARINGS; BLASTING; CHEMISTRY; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; FUELS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; LUBRICANTS; LUBRICATING COMPOSITIONS; MECHANICAL ENGINEERING; METALLURGY; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THERMAL INSULATION IN GENERAL; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION; WEAPONS

PROBLEM TO BE SOLVED: To provide such a further toque reduction for a ball bearing for a motor as satisfying "a top runner method".SOLUTION: A ball bearing for a motor includes: an inner race; an outer race; and freely rotatable balls between the inner race and the outer race. Grease containing synthetic hydrocarbon oil as base oil and an urea-based chemical compound as a thickening agent and having apparent viscosity at 30°C of 45 Pa s or less is encapsulated in the ball bearing for the motor.SELECTED DRAWING: Figure 2 【課題】「トップランナー方式」を満足できるような、モータ用軸受の更なる低トルク化を図る。【解決手段】内輪と、外輪と、前記内輪及び前記外輪の間に回転自在となる玉とを備え、基油としての合成炭化水素油と、増ちょう剤としてのウレア系化合物とを含有し、３０℃における見かけ粘度が４５Ｐａ・ｓ以下であるグリースを封入したモータ用玉軸受。【選択図】図２