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Outside US: 507-451-5430

40 cu ft (32.1 bu) 16-Outlet with Single Shaft and Red Metering Wheels for Cover Crop & Fertilizer (Model # 6640FS16F)

40 cu. ft. Orbit-Air
Product ID: 6640FS16F
  • 40 cu. ft., (approx. 32.1 bushels or 1,800 lb. granular chemical capacity)
  • 16-outlets, single shaft, no clutch
  • Raven hydraulic motor control system for speed compensated rates. (Includes Raven 660 Controller)
  • Hydraulic blower driven by a 3-port, 8-GPM hydraulic blower motor producing 8-20 oz. of air pressure
    • 10-ft. of hydraulic hose is supplied for input and outlet ports - user to supply additional hydraulic hose and couplers
  • Hydraulic control integrates with the hydraulic-driven blower and delivers greater power to the metering system. Both hydraulic drive and the blower operate with the same set of hydraulic hoses.
  • Metering Wheels
    • Red (Installed)
    • Black (Purchased Separately)
    • Yellow  (Purchased Separately)
    • White  (Purchased Separately)
  • Maximum broadcast width of 40 feet at deflector spacing not exceeding 30".
  • Unit comes mounted to a 3" x 3" square steel tubular mounting frame - operator may need to provide additional tubing, brackets, etc., to clear cylinders, leveling bars, etc., when attaching to parent implement.   
  • Hopper extension is available to add  8.5 cu ft (6.8 bushels) of capacity.
  • Weather-tight cover and latches.
Select Your Options
Guide: 300-ft - 10-18 Outlets
Contact Gandy for the location of your nearest dealer.
U.S. MSRP (FOB Owatonna): $17,680.00
Image shown is for informational purposes only, and may not necessarily represent the configurable options. Gandy Company reserves the right to change product specifications, options or prices at any time.

66 Series Orbit-Air Features Hydraulic Speed Compensated Rates with Raven Controller. Ideal for Applying Fertilizer and Small Grains
Each unit is furnished with a specific set of metering wheels. Metering wheel designation is found in the last letter of the model number 

  • Black (C) metering wheel for granular chemicals and seeds at low rates such as alfalfa, canola, etc.
  • Red (F) metering wheel for fertilizer and small seeds at high rates such as rice, wheat, etc.
  • White (S) metering wheel for large seeds such as soybeans and field peas
  • Yellow (V) metering wheel for higher rates of fertilizer (applies 1.6 times more than red metering wheel)

Please note that black poly tubing is recommended for fertilizer applications and flexible tubing is recommended for granular chemical and seed


Raven in-cab monitor allows user to preset two rates and vary rates on the go - maintains distance, area and volume information

  • Variable speed hydraulic drive motor
  • Speed sensor magnet with 20-ft. cable
  • 22-ft. cabling from clutches and rate control processor
  • Internal sieve screen
  • Cover
  • Individual metering wheels for each opening
  • Slide closures for each opening
  • Cleanout chute
  • Sight window
  • 3-port, 8-gpm hydraulic blower motor (uses tractor's hydraulic system - 3rd port is for case drain back to reservoir)
  • Produces 8-20 oz. of air pressure (adjustable for type of material being metered)
  • 10-ft of hydraulic hose is supplied (user to supply hose couplers)
  • Mixing chambers require 1-inch I.D. hose unless noted
  • Operator's manual and rate charts supplied
  • May deduct Raven console if user has a model 600, 660 or 440 equivalent that has been updated to granular readout
  • Built-to-order

Extra Mounting Equipment: User may need to provide additional tubing to mount hopper on parent implement to clear cylinders, leveling bars, etc. Deflectors, if ordered, may need to have mounting angle cut or altered to mount on parent implement.



 *Weights are approximate (granular chemical capacity calculated at 45 lbs./cu. ft.)
**Outlets can be individually closed

Are Orbit-Air models designed for specific implements?

No. All Orbit-Air models are equipped with a rectangular, universal tubular steel frame mounting base.

Can fertilizer be used in the Orbit-Air?

Yes. Fertilizer can be used in an Orbit-Air equipped with red or yellow metering wheels. Application rates are determined by the density of the fertilizer in pounds per cubic foot. Please note that models with an “N” designation the model number are not recommended for fertilizer applications.

Can Lock ‘N Load lids be added to the hopper?

Yes. Hopper lids can be die cut and Lock ‘N Load valves can be installed at the factory. Please note this is a special order item.

Do all 62-series Orbit-Air models have a hydraulic blower?

Yes. The blower is driven by a 3-port, 8-gpm hydraulic motor that uses the tractor’s hydraulic system to produce 8-20 oz. of air pressure depending on the recommendation for the product being applied.

How does a Zero-Max controller work?

Externally, the unit consists of a rugged, sealed cast case, an input shaft, output shaft and speed control. Speed of the output shaft is regulated precisely and easily by a screw control to hold speed at a desired setting. The general principle a Zero-Max is that it gives infinitely adjustable speeds by changing the distance that four or more one-way clutches rotate the output shaft when they move back and forth successively.

I don’t have room on the implement to mount the Orbit-Air. Are there any other options?

For smaller units – 21.9 and 30 cu. ft. hopper sizes there are pedestal mounts for the hitch. Part no. 62170 is for an 8" x 12" rectangular tube and part no. 62172 is for an 8" x 10" rectangular tube. 

If my implement has a constant speed shaft do I need to purchase a ground-drive?

No. If the implement has a shaft that provides a constant rpm when traveling through the field, you can fabricate sprockets and connect a chain drive to the zero-max to provide input.

Is a case drain required?

Yes. The third port of the hydraulic motor is a case drain that must be returned to the tractor’s oil reservoir.

Is it possible to block off unused air chamber outlets if they are not needed?

Each Orbit-Air comes with a specified number of blank plates to seal off air chamber outlets. Keep in mind there are two types of blank plates: for narrow openings (“N” found in middle of model number) order p/n 62851-48. For standard air chambers order p/n 550829-4.

Is it possible to block off unused metering outlets if they are not needed?

Yes. Just simply slide the gate closed behind the metering wheel.

What are my choices for connecting a ground-drive to a 62-Series Orbit-Air.

Based on the size of the Orbit-Air hopper, Gandy offers a selection of ground-drive options.

What are some examples of granular herbicides used in the Orbit-Air?

Amiben 10 G, Avadex BW, Buckle, Dual II G, Dual 25G, Edge 5G, Eradicane 25G, Eptam 20G, Far-Go, Fortress, Heritage, Lasso II Rival 10G, Ro-Neet 10G, Showdown, Sonalan 10G, Surpass 20G, Sutan + 10G, Sutazine+ 18-6G, Treflan QR5, Treflan TR-10, Vernam 10G and similar products.

What are some examples of granular insecticides used in the Orbit-Air?

Counter 15G, Dipel 10G, Dyfonate 20G, Force 1.5G, Full-Back, Furadan 15G, Lorsban 15G, M-Peril, Mocap 15G, Pounce, Thimet 15G & 20G and similar products

What are some examples of seeds that can be used in the Orbit-Air?

Alfalfa, Canola, Cotton, Flax, Hybrid Pearl Millet, Milo, Oats, Sorghumum-Sudan, Soybeans, Sunwheat, Wheat, Yellow Mustard, Yellow Clover, White Rice, etc.

What if I want a larger capacity hopper, but, only have enough room for the mounting base?

Gandy offers hopper extensions that increase the height and capacity of the hopper, while maintaining the same base size. Hopper extensions are available for 21.9, 30, 80 and 120 cu. ft. hoppers.

Are there any special metering wheels for large seeds?

Yes. A white metering wheel is available for large seeds such as soybeans, field peas, etc.

What is a black metering wheel used for?

Black metering wheels are specially designed for granular chemicals and small seeds at lower rates such as alfalfa and canola.

What is the red metering wheel used for?

The red metering wheel is used to apply fertilizer and small grains such as oats, wheat, rice, barley, etc.

What is the yellow metering wheel used for?

The yellow metering wheel is specially designed for high-volume applications of fertilizer and seeds such as sunflower. Delivers approximately 1.5 times more fertilizer than red metering wheels.

What are half-rate metering wheel used for?

Half-rate metering wheels do exactly what their name implies. For example, if a full rate metering wheel outputs 10 lbs., of material per acre, a half-rate metering wheel would output 5 lbs. of material per acre. Typically, half rate metering wheels are used in applications where the rate is below 5 lbs. per acre.

While in the cab, how do I know the shaft on the metering wheels are turning and the blower is functioning?

Gandy provides a console for the cab with indicator lights telling you the metering wheel shaft is turning and the blower is supplying the proper air flow.