Bearings went out on 46" deck spindle

Model 46209X0C Lost the bearings on one of the spindles and it burned up the belt before I got it all shut down. Have the jack shaft out of the spindle and it looks like one of the bearings/bushings in locked on the shaft and the large one in the spindle is seized tight. Are the bearing replaceable or is it time for new spindles? Also have any put grease fittings on the spindles to be able to lube them?

Thanks
Tom