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Electric power steering forming device for vehicle, has lubricant, including base oil having higher kinetic viscosity at preset temperature and less useful penetration rate, charged between spindle shaft and cylindrical body
Electric power steering forming device for vehicle, has lubricant, including base oil having higher kinetic viscosity at preset temperature and less useful penetration rate, charged between spindle shaft and cylindrical body
The device has a spindle shaft (331) and a cylindrical body (332) that are connected to one another to form a shaft joint (33) for transmitting rotation of an engine to a reducing unit. A lubricant has base oil having a kinetic viscosity ranging from 1000 to 5000 square millimeter per second at 40 degree Celsius and useful penetration rate not greater than 300. The oil is charged between the shaft and the cylindrical body.
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