Unloading

Hutchison Bin Unloading Systems

Standard Unload – The Ultimate in Flexibility

Bin Well Options

6” through 10” Standard Component System for 14' through 37' Diameter Bins

Hutchinson's wide choice of bin wells will fit your method of installation under an aeration/drying floor, in a pre-formed trench or cast in concrete.

Match the center and intermediate well combination with the proper length of under-bin tube (8' through 25') to make up a basic unloading package for 14' to 48' diameter bins. This also may be used beneath flat storage structures.

All bin wells and tubes are galvanized for extended life. Complete the system with an under-bin auger flight with your choice of power heads, slide gate control pipes and our patented Klean Sweep.

The Integrated Unloading System

Operated completely from outside the bin

One motor on the exterior power head operates both unloading auger and bin sweep. The bin sweep, which remains in the bin at all times, is positioned near intermediate wells before filling. To unload, start the unloading auger with sweep clutch disengaged and open center well gate.

After gravity flow stops in the center, open intermediate wells. When grain flow stops, shut off motor and engage sweep via separate clutch control rod. Start motor and the sweep will pull grain to the center well while moving around bin.

Our Control Pipe and Lever System enhances the operator's ability to adjust the wells.


Photo 1: The center well is equipped with a double gear box assembly to transmit power from the under-bin auger to the sweep.

Photo 2: Both center and intermediate wells feature exterior gate control. The control pipe and lever system includes pipes that control the clutch and all wells plus outside levers and hardware.

Photo 3: A solid steel clutch with chain transmission is located in a separate enclosure (illustrated). A removable cover provides ready access for lubrication and maintenance.

Units are available pre-assembled. Includes power coated un-loading tube with intermediate wells welded in place and with intermediate wells welded in place and with gate controls installed.

The base unit includes:

Power heads include Horizontal, 25º Incline or Vertical. Lo-Boy power heads are available (in any length between 20' and 50') to return grain to a center pit in circular bin arrangements.

All power heads attach with a square stub to make moving from one bin to another more time-efficient.

Klean Sweep… the finishing touch

Hutchinson's Commercial Klean Sweep is an outstanding performer for minimal investment. Heavy gauge components are used throughout to withstand the rigors of high usage. Klean Sweep for 48' and larger bins includes a sweep carrier system for extra support of flight and shield, two carriers for 90' and larger. Klean Sweep is depicted with each series of unloaders. Dependable jack shaft drives are standard on the smaller sweeps with tough oil bath chain or gear reduction units being standard on the larger units.

All Klean Sweeps feature sealed, self-aligning bearings and a motor mount with pivot stem. Klean Sweeps are sized to match the capacity of the unloading auger. Commercial Klean Sweeps may also be used with U-Trough or Drag Conveyors.

Note: Klean Sweep requires a 1” inner diameter pivot socket in center of bin.



  1. The Klean Sweep drive consists of a heavy-duty motor mount and a cast aluminum housing, enclosing the chain and sprockets in oil.

  2. Klean Sweeps for 48' and larger bins include a sweep carrier assembly for extra support of flight and shield. Two carriers for 90' and larger.

  3. Rack & pinion slide gate controls operate center or intermediate wells with the change of a pin. We recommend using our factory-made control pipe kits to complete the job.
  4. & 5. Bin wells have 1/4" plate steel gates supported by rollers; gates slide into chambers protected from grain weight. May be used under suspended floor, in a trench or cast in concrete.

Power Sweep

The Commercial Power Sweep is a unique concept adapted to commercial type storage. It offers the convenience of a bin sweep without a motor or wiring inside the bin. Power for the sweep is transferred from a motor on the back side of the tank through a drive shaft to a double gear box in the center well. The Commercial Power Sweep can be adapted to tube type U-through or en masse conveyors. The center well, intermediate wells, sweep and the sweep drive are included in the Commercial Power Sweep unit. 48' diameter and larger bins include a sweep carrier assembly for extra support of flight and shield.

6”, 8” & 10” Power Sweep Package System for 15' – 48' Diameter Bins

One motor on the exterior power head operates both unloading auger and bin sweep. Each kit includes the special power sweep bin well, unloading tube, transmission, bin sweep with “Klean Sweep” shield, intermediate well(s), bin flange and control pipe kit.

Select the power head that suits your installations – horizontal, 25º incline or vertical. Low-Boy power heads are available to return grain to a center pit in circular bin arrangements. All power heads attach with a square stub to make moving from one bin to another more time-efficient.

The unique back-up shield and torque tub combination adjusts for close floor clearance to maximize bin cleanup. It removes the grain in one or two revolutions, eliminating the need for an electrical swivel connector.

A rubber disc wheel follows the bin perimeter on the sweep end, providing a forward movement and preventing sweep flight contact with the floor. An intermediate bearing stabilizes the sweep flight on 30' (and larger) bins.

Commercial Unloader

8”, 10” & 12” Commercial Grade Components Systems for 24' – 120' Diameter Bins

This is an unloading system available in capacities for commercial applications, larger bins and flat storage structures. Components of this series are constructed of heaver gauge materials to withstand the rigors of high use.

Even in smaller bins, this series should be considered. Job application and anticipated usage level should be your guide in selection. Select from horizontal, 25º incline and unique double-drive vertical power heads.

Bin Unloader Diameter Flight Diameter Flight Strip Auger Shaft
8” 7" O.D. 3/16" 1.9" O.D. Tube
10" 9" O.D. 3/16" 2-3/8" O.D. Tube
12" 11" O.D. 3/16" 2-7/8" O.D. Tube


Sweep Series Bin Unloader Diameter Flight Diameter Flight Strip Auger Shaft Stub Size Suggested Flight Speed Oil Bath Drive Reduction Wheel
68 6" 5" O.D. 3/16" 1.9" O.D. 1-1/4" 328 RPM STD. STD.
810 8"

8"

 7" O.D. 3/16" 1.9" O.D. 1-1/2" 438 RPM

306 RPM

 STD. STD.
1012 10"

10"

 9" O.D. 1/4" 2" 2" 394 RPM

250 RPM

 STD. STD.
1214 12"

12"

 12" O.D. 1/4" 2" 2" 290 RPM

146-226 RPM

 STD. STD.


Power Heads

Standard Vertical

6”, 8”, and 10” 16'16” Tall Vertical for use with Standard Components System on bins through 48' diameter.

Discharge directly into truck, trailer or mill. One drive with heavy right angle oil bath gearbox runs both the vertical and underbin auger. Electric powered, includes 45º discharge with 3' long solid spout, base support and bin wall mounting bracket. Kit available to attach 8” vertical to 6” or 10” to 8” unload tube.

14'6” Tall Vertical for use with Standard Components System on bins through 37' diameter.

Discharge directly into truck, trailer or mill. One drive with heavy right angle oil bath gearbox runs both the vertical and under-bin auger. Electric or PTO powered, includes 45º discharge with 3' long solid spout, base support and bin wall mounting bracket. Kit available to attach 8” vertical to 6” unload tube.

Commercial Double Drive Vertical

8”, 10” and 12” Commercial Grade Verticals stand 16'6” tall.

Separate direct belt or 3:1 oil bath reducer drives on horizontal and vertical sections speed-match capacities. This dual drive design will handle 24' through 120' diameter bins. Includes 3', 45º discharge, base support and wall bracket. Kit available to attach 10” unit to 8” or 12” to 10” unload tube.

Horizontal

Horizontals available in 6”, 8”, 10” & 12”.

Single and double direct belt drives on units with Standard Components System. Commercial Grade furnished with 2, 3 & 4 belt drives, many with oil bath reducers.

25º Inclined

25º Inclines for use with 6”, 8”, 12” and 12” systems through 75' diameter bins.

Five foot length provides about 2' extra discharge height. Includes adjustable support stand to which you can attach optional wheel kit for portability. Two & three belt “B” section drives. Internal bearing in elbow. Units are offered as 6” (horizontal) to 6” (incline), 6” to 8”, 8” to 8”, 8” to 10”, 10” to 12” and 12” to 14”. The step-up sizes are recommended at all times for maximum capacity and smooth grain flow.



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