An orbital floor cleaning apparatus comprising: a handle assembly coupled to a driver base (113, 413); and an orbital drive assembly coupled to the driver base, the orbital drive assembly comprising: a driver motor disposed on an upper surface of the driver base having a drive shaft through the driver base; a driver plate disposed under the driver base and mechanically coupled to the drive shaft, where the driver plate includes at least one offset weight; a shaft support disposed between said driver base and the driver plate, said shaft support comprising a horizontal base with a through hole attached to a cylindrical portion extending along the length of said drive shaft. a bearing assembly disposed under the driver plate and mechanically coupled to the drive shaft, where the bearing assembly includes a housing, in which is disposed a bearing, and a bearing center that is held within the bearing and within the housing by a bearing retaining ring; washer means which offsets said bearing assembly from said driver plate along the length of said drive shaft and a driver disposed under the bearing assembly and mechanically coupled to the bearing housing. a handle assembly coupled to a driver base (113, 413); and an orbital drive assembly coupled to the driver base, the orbital drive assembly comprising: a driver motor disposed on an upper surface of the driver base having a drive shaft through the driver base; a driver plate disposed under the driver base and mechanically coupled to the drive shaft, where the driver plate includes at least one offset weight; a shaft support disposed between said driver base and the driver plate, said shaft support comprising a horizontal base with a through hole attached to a cylindrical portion extending along the length of said drive shaft. a bearing assembly disposed under the driver plate and mechanically coupled to the drive shaft, where the bearing assembly includes a housing, in which is disposed a bearing, and a bearing center that is held within the bearing and within the housing by a bearing retaining ring; washer means which offsets said bearing assembly from said driver plate along the length of said drive shaft and a driver disposed under the bearing assembly and mechanically coupled to the bearing housing. a driver motor disposed on an upper surface of the driver base having a drive shaft through the driver base; a driver plate disposed under the driver base and mechanically coupled to the drive shaft, where the driver plate includes at least one offset weight; a shaft support disposed between said driver base and the driver plate, said shaft support comprising a horizontal base with a through hole attached to a cylindrical portion extending along the length of said drive shaft. a bearing assembly disposed under the driver plate and mechanically coupled to the drive shaft, where the bearing assembly includes a housing, in which is disposed a bearing, and a bearing center that is held within the bearing and within the housing by a bearing retaining ring; washer means which offsets said bearing assembly from said driver plate along the length of said drive shaft and a driver disposed under the bearing assembly and mechanically coupled to the bearing housing.