• Reliability and high performance.
  • Requires low maintenance.
  • Quick and easy conversion from feeding to filling.
  • Can work with any existing tripod system, making replacement of your existing unloader easy and economical. 
  • Proven gearbox is filled with synthetic gear lube for optimum protection at any temperature.
  • High-capacity blower with cast iron swinging paddles
  • Low profile collector ring with heavy-duty cast-iron housings
  • Self-cleaning auger grid
  • 7” (17.8 cm) lead auger and 8” (20.3 cm) diameter trailing auger
  • Full length mounting bar for weights
  • Wall wheels are Individually adjustable, mounted on 3/4’’ (1.9 cm) stainless steel axles
  • Wall-to-wall arm for Pow’r-Ring to fit an existing hexapod suspension Optional
Heavy-duty impeller

Heavy-duty impeller

  • Massive ductile iron paddles in the 27” (68.6 cm) diameter impeller to provide unmatched momentum and raw blowing power.
  • Open-bottom design with reinforced V-entry edge for added durability.
  • Upper wrapper in 10-gauge stainless steel.
  • Impeller disk features big 1 1/4” (2.5 cm) shaft.
Chipper wheels

Chipper wheels

  • Two counter-rotating assemblies shave walls clean.
  • Self-sharpening cupped blades are reversible and replaceable.
  • Heavy duty ductile iron hub on 1- 3/8” (3.5 cm) shaft is durable.
  • Split hub for easy service.
Increased collector ring reliability

Increased collector ring reliability

  • Machined copper rings, 5/8" (1.6 cm) wide by 1/8" (0.3 cm) thick, laid horizontally for a shorter collector ring height.
  • Six metal graphite brushes provide long wear and trouble-free electrical connections.
  • Ring and brush holders feature wide arc prevention spacing.
  • Felt discharge seal to protect electrical components.


Sharpened & case-hardened knives

Sharpened & case-hardened knives

The flighting is pre-punched along the entire auger length. Carriage head bolts make knife changing faster and easier.

Discharge chute

Discharge chute

Stainless Steel Chute Adapter | Stainless Steel lower chute and Galvanized Steel upper chute extension | Multi-Radius design for accuracy and better out-the-door power.

Heavy-duty hoist

Heavy-duty hoist

Built for big loads. The large diameter gear drive runs in a fully enclosed oilbath cast iron housing. The 3-1/4” diameter spool has lots of capacity for those really tall silos.

Dual speed kit

Dual speed kit

It can be added to the hoist for motorized operation. The belt and chain 2-stage reduction allows a 1/2 HP motor to raise the heaviest unloaders. Use the low-speed setting for unloading and the high speed setting to raise the unloader at filling time.


  Magnum Surface Drive Pow'r Ring*

12' (3.6 m), 14' (4.3 m), 16' (4.9 m), 18' (5.5 m), 20' (6.1 m), 22' (6.7 m), 24' (7.3 m), 26' (7.9 m) or 30' (9.1 m)

14' (4.3 m), 16' (4.9 m), 18' (5.5 m) , 20' (6.1 m) or 24' (7.3 m)

  • Dual augers, counter-rotating, differential speed.
  • Lead auger is 7'' (17.8 cm) diameter at 238 RPM.
  • Rear auger is 8'' (20.3 cm) diameter at 179 RPM. 
  • Dual augers, counter-rotating, differential speed.
  • Lead auger is 7'' (17.8 cm) diameter at 238 RPM.
  • Rear auger is 8'' (20.3 cm) diameter at 179 RPM. 
Auger tubes
  • 2 3/8'' (6 cm) O.D. for 12' to 20' (3.6 m to 6.1 m) models
  • 2 7/8'' (7.3 cm) O.D. for 24' to 30' (7.3 m to 9.1 m) models
  • 2 3/8'' (6 cm) O.D. for 14' to 20' (4.3 m to 6.1 m) models 
  • 2 7/8'' (7.3 cm) O.D. for 24' .(7.3 m) models
Suspension Single-cable tripod Single-cable tripod or three-cable tripod or hexapod (requires extended arm option)
Special features

Cast iron drive wheels: 

  • Heavy weight provides traction
  • Mount for additional weight
  • Easy-roll-away changeover for filling

Full size drive ring: 

  • 7'4'' (2.2 m) diameter
  • Measures 9'' x 2'' (22.9 cm x 5.1 cm)
  • Made of 3/16'' (0.5 cm) steel
  • Direct-drive: no gearbox is needed

* The Pow'r Ring model is only available in the United States. 

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