Prochem® PB Series Mixers combine the proven features of the MD Series with the advantages of a pillow block bearing design. You get truly efficient fluid processing plus maximum simplicity of maintenance. Instead of a bearing cartridge, PB Mixers are equipped with pillow block mounted inboard and outboard bearings that permit convenient servicing or replacement of bearings. All bearings, along with the stuffing box, are mounted and aligned in an integral fabricated steel base. No field alignment is required during installation or realignment necessary when bearings are replaced or packing is changed.