DJI Agras T40 OEM Spreading Flange

The DJI Agras T40 OEM Spreading Flange is a small, black moulded hub-and-plate coupling from the aircraft's granular spreading system. It is a round, flat plate with a raised cylindrical hub at its centre; the hub carries a flatted, D-shaped bore that takes drive from a shaft with a matching flat, and the underside of the plate carries short pegs that key the flange to the part it turns. A moulded A10 mark sits on the face of the plate. It belongs to the spreading system, not to the spray, power or flight-control systems, and it is identified for the DJI Agras T40 and T20P. Operators usually find it while searching for a T40 spreader flange, a T20P spreading system flange, a spreader drive hub, or the reason a spreader runs but throws an uneven pattern. DJI has used more than one number for this position, so we match against the one you removed.

---

🇺🇸 U.S.A. FIRST

Ares Acres LLC is a U.S.-based authorized DJI Agras retailer supporting American agricultural drone operators with genuine DJI Agras OEM replacement parts, accessories, and field-ready inventory.

FREE & FAST Shipping is included for all U.S. customers.

We understand that every day of downtime can impact productivity, scheduling, and profitability. That's why we focus on providing fast fulfillment, responsive customer support, and reliable access to the parts operators need most.

Ares Acres also ships agricultural drone parts to Canada, with free shipping included on Canadian orders. Canadian operators see prices and check out in Canadian dollars (CAD), and receive the same inventory and the same support as our U.S. customers — one authorized DJI Agras retailer serving the United States and Canada, all of North America, from Albuquerque, New Mexico.

---

✅ DJI Agras T40 / DJI Agras T20P Compatibility Guarantee

• 🇺🇸 USA Compatibility Guarantee
• 👍🏻 Satisfaction Guarantee
• 💵 Money Back Guarantee
• 📦 Same Day Shipping & Tracking
• Identified for the DJI Agras T40 and T20P granular spreading system
• Matched by plate outline, hub height, flatted-bore shape, peg layout and the moulded A10 mark against the flange you removed
• Genuine DJI OEM spreading system component, brand new

The spreading system carries more than one round moulded part, and several of them look alike once they are coated in granular residue. If you want the match confirmed, clean the flange you removed, photograph it from above with the bore facing the camera and once from the side showing the pegs, and send both photographs to us. We will match it for you.

---

📦 Package Includes

• 1 × Spreading Flange — the one-piece black moulded hub-and-plate coupling with a flatted bore and locating pegs

This is the flange alone. It is a single moulded component, not a spreader assembly, not a motor kit and not a disc set.

Not included: the drive shaft, the spreading motor, the spinning disc or any other part the flange carries, the hopper, the metering gate, and any screws, set screws, pins, clips or washers used to retain the flange on its shaft. Reuse the original retaining hardware only if it is undamaged and still holds firmly; otherwise replace it separately.

Nothing is included because it appears near the flange on the aircraft. If a retaining part was lost when the old flange came off, tell us which one and we will help you identify it.

---

🔧 Component Overview

The spreading flange is a drive coupling. It sits on a shaft in the spreading system and passes that shaft's rotation on to the part it carries. It is small, it is usually buried in granular residue, and on a working aircraft it is easy to look straight past.

Its shape tells you how it works. The flange has four working features, all visible in the product images:

• The round plate — a flat, circular disc that forms the base of the flange and gives it a wide, square face to seat against the part it drives
• The raised hub — a cylindrical boss rising from the centre of the plate, with a chamfered top edge, a step near its base and small side bosses on its wall
• The flatted bore — the hole through the hub is not round; it has a flat, giving it a D-shaped profile that locks the flange to a shaft with a matching flat so the two turn together
• The pegs — short moulded pegs standing proud of the underside of the plate, which key the flange to the part it turns so that part cannot slip around the plate

The moulded A10 mark on the face of the plate is an identification mark on the moulding. It is useful when comparing the new flange with the old one; it is not a DJI material number and should not be ordered against as one.

Two interfaces do all the work: the flat inside the bore and the pegs under the plate. Everything the spreader does downstream of this shaft depends on both of them holding their shape.

Over a working season the flange sees:

• Start-up and shut-down torque on every spreading run, carried through one flat in the bore
• Abrasive granular product — fertiliser, seed and pellet dust — working its way between the bore and the shaft
• Corrosive fertiliser residue left standing on the hub and plate between jobs
• Hard material jams that load the pegs and the bore at the same instant
• Repeated removal and refitting during cleaning and spreader service
• Wash water and pressure washing at the end of each day
• Heat in the sun and on the trailer between flights

Flanges in this position come out for three reasons: pegs sheared or rounded by a jam, a plate cracked by an impact or a tool during removal, or a bore whose flat has worn round so the shaft turns inside it. The last of those leaves the flange looking intact, and it is the failure this part's diagnosis is built around.

---

⚙️ Functional Purpose

The flange's engineering role is torque transfer and location. The flatted bore takes rotation from the shaft without slipping; the plate gives the driven part a flat, square seat so it runs true; the pegs lock that part to the plate so the two turn as one.

In the spreading system it:

• Couples the drive shaft to the part it turns, through the flat in the bore
• Keys that part to the plate through the pegs on the underside
• Sets the seating face, so the driven part runs square to the shaft rather than wobbling
• Keeps the driven part at a fixed height on the shaft through the hub and its step
• Spreads the drive load across a wide plate rather than a single point

What it does not do matters as much:

• It is not the motor; it has no windings, bearings or electrical connection
• It does not meter product; the hopper outlet and metering parts decide how much material flows
• It is not the spinning disc or a vane; it carries and drives, it does not throw material itself
• It carries no wiring and no sensor, so it never raises its own error
• It does not seal anything; residue reaches the bore whether the flange is new or worn

That division of labour is why a worn flange is so easy to miss. The motor still runs, the controller still reports the motor turning, and the only evidence is in how the product leaves the aircraft.

---

🔍 Diagnosis — the shaft turns, so check that the flange turns with it

A spreading flange rarely fails by breaking in half. It fails at the flat. The flat in the bore is a small area carrying all the drive torque, and abrasive granular dust works into it every flight. Over a season the flat can wear, round off or crack at its corners, and the bore slowly stops gripping the shaft.

When that happens, nothing looks wrong. The flange is in one piece. The motor spins. The shaft turns. But under load — a full hopper, a heavy product, a start-up — the shaft turns a little inside the flange before it catches, or slips outright for a moment, and the part the flange drives lags behind the shaft.

That lag shows up downstream, not at the flange. The pattern narrows or goes uneven. One side of the swath gets less product. Coverage looks patchy on the ground. Every one of those symptoms points first at the motor, the metering setting or the calibration, and a worn flange can survive a motor change, a recalibration and a cleaned hopper without anyone looking at it.

Signs the flange is slipping or loose:

• Spread pattern narrower or less even than the same product and settings produced before
• A ticking, clicking or knocking from the spreader at start-up or when the hopper is full
• The driven part can be rocked back and forth by hand while the shaft is held still
• Polished, shiny wear on the flat of the shaft or inside the bore
• Fine plastic dust, or a black smear, around the hub after a job
• The driven part sitting tilted or wobbling as it turns

Before condemning the flange, rule out what imitates it:

• The spreading motor — if the shaft itself is slow, stalls or stops, the motor or its drive is the problem, not the flange
• The metering parts and hopper outlet — a partly blocked or caked outlet starves the spreader and narrows the pattern on its own
• The spinning disc or vanes — a cracked, chipped or bent disc throws an uneven pattern even on a perfect flange
• Missing or loose retaining hardware — a flange that has lifted on its shaft can rock even when the bore is good
• Calibration and settings — product changes and settings changes alter the pattern without any part wearing

Use a paint mark as your instrument. With the aircraft powered down and the battery out, clean the hub and shaft end, then draw one straight line across the shaft end, the hub and the plate. Hold the shaft still and try to turn the driven part by hand in each direction. If the line breaks — the flange moves on the shaft, or the driven part moves on the flange — you have found the slip. A good flange and shaft show no visible movement at the mark.

Then look at the two wear points directly. Pull the flange and check the flat in the bore: its edges should be crisp and straight, not rounded or polished. Turn it over and check the pegs: each one should stand full height, square and uncracked. Do those checks first, while the spreader is already apart and that information is still cheap. If the bore flat is rounded, a peg is sheared or worn, or the plate is cracked, replace the flange rather than refitting it.

---

⚠️ Common Replacement Indicators

Replace the spreading flange when inspection confirms one of these:

• Free play between the flatted bore and the shaft that a paint mark shows as movement
• A flat in the bore that is rounded, polished or cracked at its corners
• A peg that is sheared off, cracked at its root or worn shorter than the others
• A crack anywhere in the plate, or running from the hub into the plate
• A crack or split in the hub wall, at the side bosses or at the step near the base
• A plate that is bent, warped or no longer sits flat against the part it drives
• Chemical attack or chalky, softened surfaces from fertiliser residue
• Previous repairs with adhesive or filler at the bore, hub or pegs

Inspect these first, because they produce similar symptoms:

• The spreading motor and the flat on its shaft
• The spinning disc and its vanes
• The hopper outlet and metering parts
• The retaining hardware that holds the flange on its shaft
• Spreader calibration for the product in the hopper

There is no published service interval for this flange. It is replaced when its bore, pegs or plate are worn or damaged, not on a schedule.

---

📐 Specifications

Product name: DJI Agras T40 OEM Spreading Flange

DJI family: Agras

Primary aircraft: DJI Agras T40

Also identified for: DJI Agras T20P

Fitment basis: Identified for the DJI Agras T40 and T20P

Aircraft system: Spreading system — granular spreader drive

Component type: One-piece moulded hub-and-plate drive flange

Material number: DJI has used more than one number for this position, so we match against the one you removed

Quantity: 1 flange

Form: Round flat plate with a raised cylindrical hub, a flatted D-shaped bore, small side bosses on the hub wall and short locating pegs on the underside

Moulded marking: A10, on the face of the plate

Bore: Flatted, D-shaped; exact bore dimensions not published for this part

Material: Not published for this part

Colour: Black

Dimensions: Not published for this part

Weight: Not published for this part

Electrical: None — mechanical part with no wiring or sensor

Connector: None

Mounting position: On a drive shaft in the spreading system, carrying and keying the part it turns

Installation method: Slides onto the shaft flat; pegs engage the driven part; retained by the aircraft's existing hardware

Hardware included: None — retaining screws, pins or clips are not supplied

Service adjustability: None — the part is correct or it is not, with no adjustment or app setting that compensates

Condition: Brand new

Classification: DJI OEM spreading system component

---

🛠️ Installation & Maintenance

Before installation

• Power the aircraft down and remove the battery
• Empty the hopper completely and brush out loose product from the spreader
• Rinse and dry the spreader so you are not working in fertiliser residue, and wear gloves
• Photograph the flange in place from the side and from below, so its orientation and the driven part's seating are on record
• Lay the new flange beside the old one and compare plate outline, hub height, bore flat, peg layout and the moulded A10 mark
• Lay out a tray for the retaining hardware and keep it in the order it came off

During installation

• Remove the retaining hardware and lift the driven part off the flange without levering against the plate edge
• Draw the old flange straight off its shaft; if it is seized with residue, soak and work it free rather than prising it, which can mark the shaft flat
• Clean the shaft and check its flat: it should be straight and crisp, not stepped, polished or burred
• Remove any burrs on the shaft with a fine file so the new bore is not shaved on the way on
• Line the bore flat up with the shaft flat and slide the new flange on by hand; it should go on square without force
• Seat the driven part so every peg engages fully and the part sits flat on the plate
• Refit the retaining hardware firmly; DJI does not publish a torque figure for it, so tighten snugly without distorting the moulding

After installation

• Repeat the paint-mark check: hold the shaft and try the driven part by hand; there should be no visible movement
• Turn the assembly slowly by hand and watch it run; it should turn true, without a wobble at the plate edge
• Run the spreader empty at the ground and listen for ticking or knocking at start-up
• Spread a short test strip with your usual product and compare the pattern with what you expected
• Recalibrate for the product if the pattern was already off before the repair
• Record the replacement in the maintenance log

Maintenance between jobs. Wash fertiliser residue off the hub and plate at the end of every working day rather than letting it sit; residue packed into the bore is what grinds the flat away. Each time the spreader is cleaned, put a hand on the driven part and feel for play on the shaft. Play you can feel by hand is play the flange takes on every start-up, and it only grows.

---

🚜 Necessary For

This flange is for operators and technicians keeping a T40 or T20P spreader throwing the pattern it was set up to throw:

• DJI Agras T40 operators running the granular spreading system for fertiliser, seed or pellets
• DJI Agras T20P operators (identified fitment)
• Commercial spreading applicators flying long days with abrasive product in the hopper
• Growers spreading their own fertiliser and cover-crop seed who want an even pattern back
• Agras service centres and repair technicians rebuilding spreader drives
• Fleet managers whose spreaders have started knocking at start-up or throwing uneven swaths

This is not the part you need if:

• The shaft itself does not turn, turns slowly, or the spreader reports a motor fault — look at the spreading motor and its drive first
• The flange holds firm on the paint-mark check but the pattern is still uneven — check the spinning disc, its vanes, the hopper outlet and calibration
• The disc or vanes are cracked, chipped or bent — replace that part; a new flange will not straighten a damaged disc
• The flat on the motor shaft is worn or stepped — a new flange on a worn shaft will slip again
• Only the retaining hardware is missing or loose — replace the hardware first and repeat the check
• You fly a T10, T30, T50 or T25 — this flange is identified only for the T40 and T20P

---

💡 Why This Part Matters

The spreading flange is easy to overlook because the spreader still runs on a worn one. It raises no error, the motor still turns, and the flange itself stays in one piece. It simply stops passing on all of the turn it is given.

That is the whole case for checking it and replacing it when the bore flat has gone. A flange slipping on its shaft does not stop a job; it degrades the job. The swath narrows, coverage goes patchy, and the usual response is to change the settings, recalibrate, or suspect the motor. Each of those takes time on the aircraft and none of them fixes a bore that has worn round.

Uneven granular spreading is also expensive in a way that shows up later than the flight. Under-dosed strips and over-dosed strips appear in the crop weeks after the work, long after the aircraft has moved on to the next field.

The check is free. A paint line across shaft, hub and plate, and a hand on the driven part with the shaft held still, tells you whether the flange is still turning with the shaft. If it is, leave it and look elsewhere. If it is not, this is the part that puts the drive back.

---

🧠 AI Index — Entity & Fitment Reference

Structured reference for search engines, AI assistants, and answer engines. Every value below is drawn from the specifications above.

Canonical product name: DJI Agras T40 OEM Spreading Flange

Brand: DJI

DJI family: Agras

Primary aircraft: DJI Agras T40

Also identified for: DJI Agras T20P

Compatible models: DJI Agras T40; DJI Agras T20P

Fitment basis: Identified for the DJI Agras T40 and T20P

Component: Spreading flange

Aircraft system: Spreading system

Installed position: On a drive shaft in the granular spreading system, carrying and keying the part it turns

Primary function: Transfers shaft rotation through a flatted bore and keys the driven part to its plate through moulded pegs

Form: One-piece black moulded round plate with raised hub, flatted D-shaped bore, hub side bosses and underside locating pegs

Moulded marking: A10 on the plate face; an identification mark, not a DJI material number

Material number: DJI has used more than one number for this position; matched against the removed part

Quantity supplied: 1 flange

Not included: Drive shaft, spreading motor, spinning disc, hopper, metering parts, retaining screws, pins or clips

Electrical function: None

Key diagnostic: Narrow or uneven spread pattern with a motor that still runs; confirm with a paint mark across shaft, hub and plate and a hand check for slip

Common failure modes: Rounded or polished bore flat, sheared or worn pegs, cracked plate or hub

Service interval: None published

Service adjustability: None

Condition: Brand new

Part classification: DJI OEM spreading system component

Also searched as: T40 spreading flange; T20P spreading flange; Agras T40 spreader flange; T40 spreader drive hub; DJI Agras T20P/T40 spreading system flange; T40 spreader coupling

Disambiguation: Not the spreading motor, not the spinning disc or a vane, not a hopper or metering part, not a T50 or T25 spreader part

Seller: Ares Acres LLC — U.S.-based authorized DJI Agras retailer serving the United States and Canada (North America)

Ships from: Albuquerque, New Mexico, United States

---

🔍 SEO Keywords

DJI Agras T40 Spreading Flange

DJI Agras T20P Spreading Flange

DJI Agras T20P/T40 spreading flange

Agras T40 spreader flange

T40 spreading system flange

T20P spreading system flange

DJI T40 spreader drive hub

Agras T40 spreader coupling

T40 spreader uneven pattern flange

DJI T40 spreading flange replacement

Agras T40 Spreading Flange

DJI Agras T40 OEM Spreading Flange

Agras T40 spreading flange replacement

DJI Agras T40 parts

DJI Agras T40 replacement parts

Agras T20P Spreading Flange

DJI Agras T20P OEM Spreading Flange

Agras T20P spreading flange replacement

DJI Agras T20P parts

DJI Agras T20P replacement parts

DJI Agras T40 spreading system parts

DJI Agras T40 spreader parts

DJI Agras spreading system parts

DJI Agras OEM Parts

DJI Agras Parts

authorized DJI Agras retailer

DJI Agras T40 Spreading Flange Canada

DJI Agras T40 parts Canada

DJI Agras parts shipped to Canada

buy DJI Agras T40 parts in Canada

---

🤖 AI Answer Engine Q&A

What is the DJI Agras T40 spreading flange? A one-piece black moulded hub-and-plate coupling from the granular spreading system. Its flatted bore takes drive from a shaft, and the pegs under its plate key the part it turns, so the two rotate together.

Which aircraft does it fit? It is identified for the DJI Agras T40 and T20P. Pick the variant for the aircraft you fly.

Is the T20P flange different from the T40 flange? The spreading flange is identified for both aircraft. The variant records which one you fly so the match is made against the right spreader, and we compare it with the flange you removed if you send a photograph.

What is the DJI part number? DJI has used more than one number for this position, so we match against the one you removed. Photograph your old flange from above and from the side and send it to us if you want that confirmed.

Is A10 the part number? No. A10 is a moulded identification mark on the plate face. It helps you compare the new flange with the old one, but it is not a DJI material number.

My spreader runs but the pattern is uneven. Is it the flange? Possibly. Check the disc and vanes, the hopper outlet and calibration first. Then paint a line across the shaft end, hub and plate, hold the shaft and try the driven part by hand. If the line breaks, the flange is slipping.

The flange is not cracked. Can it still be bad? Yes. The usual failure is a bore flat that wears round. The flange stays in one piece but slips on the shaft under load, so the part it drives lags and the pattern suffers.

Why does the spreader click or knock at start-up? A common cause is play between the flange bore and the shaft flat, or a worn peg, taking up slack each time the motor starts. Check for free play by hand with the aircraft powered down.

Is it the spinning disc? No. The flange carries and drives; it does not throw product itself. The disc and its vanes are separate parts.

Is it part of the motor? No. It has no windings, bearings or wiring. It sits on the shaft and passes the motor's rotation on.

Are screws or pins included? No. The flange is supplied on its own. Reuse sound original retaining hardware, or replace any that is damaged separately.

Will a new flange fix a worn motor shaft? No. If the flat on the shaft is stepped, burred or worn, a new flange will slip again. Check the shaft flat while the old flange is off.

Does it fit the T10, T30, T50 or T25? It is identified only for the T40 and T20P. Do not fit it to other Agras models on the strength of a similar shape.

Can I fit it myself? Most operators can. Empty and clean the spreader, photograph the flange in place, line the bore flat up with the shaft flat, slide it on by hand, seat every peg and repeat the paint-mark check before flying.

Is there a torque value for the retaining hardware? DJI does not publish one for this position. Tighten snugly and stop before the moulding distorts.

Is there a service interval? No. Replace it when the bore flat is rounded, a peg is damaged, or the plate or hub is cracked. Feel for play every time the spreader is cleaned.

How do I make the new flange last? Wash fertiliser residue off it at the end of each day, never leave product packed around the bore, and treat any play you can feel by hand as a reason to look before the next job.