UniMAX® Bucket Elevator / Grain Legs

The UniMAX® bucket elevator is a high capacity centrifugal discharge elevator engineered to meet the most strict industry standards. The elevator head, boot, and intermediate sections have been designed with adequate space for buckets and belt to travel un-impeded throughout the system. Bucket spacing and belt speeds follow recommendations and standards set forth by industry leaders. UniMAX® bucket elevators are designed with cleanliness in mind by eliminating shelves for material to build up in the head, inspection doors, vents, access and boot section. The casings were also designed for afterthought installation of hazardous monitoring equipment to eliminate cutting and grinding on newly purchased elevators.

Safety is priority – UniMAX® elevators are built with the provisions to install hazardous monitoring equipment. The boot and head casings have removable covers to install belt alignment sensors and boot shafts are drilled and tapped for speed sensors. The boot bearing guards offer a take up location indicator and knock outs to access grease zerks and installation of bearing temperature sensors.


The UniMAX® head has been designed with a crowned drum pulley with slide lagging. Inspection doors are included for inspecting the buckets, belt, deflector pad, and discharge throat. Incorporated are jack bolts to assist with aligning the bearings. Lifting eyes are contained in the lower head, up-leg and down-leg casings for rigging and maintenance. Removable covers for installation of belt alignment sensors are standard.

unimax bucket elevator head
unimax bucket elevators


The intermediate section is constructed with seam welded 12-gauge trunking built in a jig. An optional 10-gauge upgrade for heavier construction is also offered. Included is an access section for easy maintenance of buckets and belts.


We offer standard rubber belting with PVC, high temp, and food grade options are available upon request. HDPE Buckets come standard with all units but optional carbon steel, stainless steel, nylon, and urethane buckets are available as well. Buckets may be vented when the application requires it.


UniMAX® elevators offer two different drive packages all rated for Class II Service and are mounted on the right hand side when looking into the hopper. When purchased with a new elevator, the #2 drive package includes a shaft mounted reducer, v-belts, sheaves, v-belt guards and optional internal backstop. The #5 drive package includes a right hand mounted helical bevel gearbox with internal backstop and guards. Additional options for drive packages include motors, creep drives and dual drives.


The UniMAX® Boot has a solid welded design for durability. Included are removable covers for installation of belt alignment sensors and for the installation of a shovel pocket. The boot shaft is drilled and tapped on both sides for installation of speed sensors.


  • Linings – various configurations (AR steel, urethane, ceramic tile)
  • Platforms, ladder and cage
  • Bucket fill inspection port located on access
  • Gravity boot take up
  • Self-cleaning boot
  • Shovel pocket
  • Rack and pinion clean-out (RPC)
unimax bucket elevator boot
ModelCapacityCubic Ft./hrCubic Meters/hrBucketsBelting
242,000 BPH - 4,000 BPH2,500 ft³/h - 5,000 ft³/h71 m³/h - 142 m³/h9” x 5” (229 mm x 127 mm) 11” (279 mm)
305,000 BPH - 8,500 BPH6,250 ft³/h - 10,625 ft³/h177 m³/h - 301 m³/h14” x 6” (356 mm x 152 mm)15” (381 mm)
369,500 BPH - 13,000 BPH11,875 ft³/h - 16,250 f³/h336 m³/h - 460 m³/h14” x 8” (356 mm x 203 mm)15” (381 mm)
4213,000 BPH - 18,000 BPH16,250 ft³/h - 22,500 ft³/h460 m³/h - 637 m³/h20” x 8” (508 mm x 203 mm)21” (533 mm)
4813,000 BPH - 18,000 BPH16,250 ft³/h - 22,500 ft³/h460 m³/h - 637 m³/h20” x 8” (508 mm x 203 mm)21” (533 mm)

(For capacities exceeding 18,000 BPH, Double Row or Triple Row bucket elevators please contact our sales department).