DJI Agras T50 OEM Swing Disk Upper Plate (YC.JG.ZS003459)

DJI Agras T50 Parts | DJI Agras T50 OEM | DJI Agras OEM Parts | Swing Disk Upper Plate | Spreader Disc Protective Baffle | Granular Distribution Assembly Cover | DJI Material Number YC.JG.ZS003459

DJI Material Number YC.JG.ZS003459 — this is the official DJI part number for this exact component. Match it to your parts diagram or the label on the original part to confirm fitment; factory labels may carry a revision suffix, which is the same part.

🇺🇸 U.S.A. FIRST

Ares Acres LLC is a U.S.-based authorized DJI Agras reseller 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.

We use specialized technicians to verify and dispatch the Swing Disk Upper Plate ordered.

Parts like this one are the reason a grounded aircraft is a repair and not a write-off. A single component held in U.S. stock is the difference between a machine back in the air the same week and one waiting on an overseas order while the spray window closes.

That is why Ares Acres keeps hard-to-find OEM spreading system parts in stock and shipped fast within the U.S.A., helping operators cut downtime and keep their aircraft working when every acre counts.

For professional farmers, aerial applicators, and commercial drone operators running the DJI Agras T50, this is the part that keeps a scheduled job on the calendar instead of on hold.

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✅ DJI Agras T50 Compatibility Guarantee

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📦 Package Includes

• 1 × DJI Agras T50 OEM Swing Disk Upper Plate
• OEM spreading-disc upper protective plate
• Spreader assembly baffle component
• Direct-fit replacement part
• Factory-style mounting interfaces
• OEM protective packaging

🔧 Component Overview

The DJI Agras T50 OEM Swing Disk Upper Plate is a structural spreading-system component designed to fit above the rotating spreader disc and support the controlled movement of granular material through the aircraft's spreading assembly.

Commonly identified as a swing-disk upper plate or spread baffle, this component is associated with the DJI Agras T50 spreading system and is intended for replacement during spreader repair or refurbishment.

Although relatively compact, the upper plate plays an important role within the spreading assembly. It helps maintain the intended physical separation, alignment, and operating environment around the rotating distribution disc.

The DJI Agras T50 may be used to distribute materials such as:

• Granular fertilizer
• Seed
• Cover-crop seed
• Dry agricultural inputs
• Soil amendments
• Pasture-management materials
• Field-treatment granules
• Other compatible spreading materials

During operation, spreading components are repeatedly exposed to abrasive particles, vibration, impact, dust, fertilizer residue, moisture, transportation movement, and continuous high-volume material flow. These conditions can gradually wear or damage protective plates, baffles, mounting points, and other components surrounding the spreader disc.

A cracked, distorted, loose, or missing upper plate may interfere with the intended operation of the spreading assembly. It may also expose nearby components to unnecessary material contact, vibration, or contamination.

The OEM Swing Disk Upper Plate helps maintain:

• Proper spreader-disc coverage
• Factory-style component positioning
• Stable spreading-system assembly
• Reduced unwanted material contact
• Consistent internal clearances
• Secure structural fitment
• Cleaner spreading-system operation
• Reduced long-term component wear
• Professional repair standards
• Improved field readiness
• Dependable commercial operation

Designed for the DJI Agras T50, this direct-fit component helps restore the spreading assembly following wear, accidental damage, disassembly, or system refurbishment.

For operators who depend on the T50 for both spraying and spreading, maintaining the condition of the distribution system is essential. Small structural components surrounding the spreader disc can directly influence the reliability and serviceability of the complete assembly.

Before ordering, confirm the plate is actually the fault. With the hopper empty and the aircraft powered down, take hold of the plate at its outer edge and try to move it. Any perceptible rock, click, or shift means a cracked mounting tab or an elongated fastener hole, even when the fasteners themselves are tight. Then flex the plate gently and watch the tab areas: a fatigue crack often closes up when the part is unloaded and opens only under a little pressure, which is why plates get passed as serviceable and fail the following week.

Warp is the hardest fault to judge by eye, because a plate that has taken a set still looks like a plate. Lay a straightedge across it in two directions and look for daylight underneath, or set it on a known flat surface and press each corner in turn to see whether it rocks. The most decisive check is comparison: hold the old plate against the new one with the edges aligned and look through the joint. Any gap that appears between them is distortion the old plate carries and the new one does not, and no amount of even tightening will take it out.

Rule out the parts on either side of it before blaming the plate. With the plate off, spin the spreader disc by hand: roughness, notchiness, or side play at the shaft points at the spreading motor rather than at any structure around it. Look into the hopper outlet for bridged or damp product, because a restriction there produces the same low ground rate as a narrowed flow path. If the pattern is heavier to one side, check whether the plate is sitting shifted on elongated holes before you start suspecting the disc or the gate.

Empty the hopper completely before anything comes apart, or the first fastener you remove will let a slow stream of product into the assembly and onto the ground. Photograph the area first and keep the fasteners in the order they came out. Mixed fastener lengths are a common and expensive mistake here: one that is too long can reach into the disc path, and one that is too short strips its boss the first time it is snugged. If a fastener is corroded in place, soak it and back it out slowly rather than shocking it, because a snapped fastener in a molded boss turns a short job into an afternoon.

⚙️ Functional Purpose

The OEM Swing Disk Upper Plate is designed to provide structural coverage and support around the rotating spreading disc within the DJI Agras T50 spreading system.

The component helps:

• Cover the upper portion of the spreading-disc assembly
• Support proper spreader-system configuration
• Maintain factory component positioning
• Preserve necessary operating clearances
• Help guide material through the spreading area
• Reduce uncontrolled contact with surrounding components
• Protect nearby spreader-system surfaces
• Support stable granular distribution
• Reduce unnecessary vibration-related movement
• Maintain OEM structural fitment
• Support spreading-system reliability
• Restore damaged or missing protection
• Improve long-term serviceability
• Support professional fleet maintenance
• Reduce preventable downtime
• Preserve overall equipment readiness

A properly assembled spreading system depends on each plate, guard, disc, motor, bracket, and material-routing component remaining correctly positioned.

A damaged Swing Disk Upper Plate may contribute to:

• Loose spreading-system fitment
• Unwanted component movement
• Material accumulation
• Irregular material flow
• Contact with rotating components
• Increased vibration
• Premature component wear
• Spreader-system noise
• Reduced distribution consistency
• More frequent maintenance
• Unexpected field interruptions
• Increased repair complexity

When the plate is stuck to its mating surface with dried fertilizer, break it free against structure rather than against the disc or the motor. Levering on the disc puts a side load straight into the spreading motor shaft and its bearings, which is how a simple plate replacement becomes a motor replacement. Flood the joint with water, let the cake soften, and work the plate free with steady hand pressure at the edges. Anything that seems to need a hammer or a pry bar is telling you the residue has not softened yet.

Refit the plate dry first, with every fastener started by hand before any one of them is tightened. That confirms the holes line up on their own rather than the plate being pulled into position, which is what elongates holes and cracks tabs over a season. Bring the fasteners down in a cross pattern to a light, even snug, then check that the plate sits flat against its mounting faces all the way around. DJI does not publish a torque figure for this plate and it does not need one: even and flat beats tight on any fastener threading into a molded boss.

Re-check disc clearance after the fasteners are at final tightness, not before. A plate can sit clear while the fasteners are finger tight and then pull down into the disc path once they are snugged, particularly if one mounting face has residue under it. Turn the disc slowly through several complete revolutions rather than one, listening for a light tick that appears at only one point in the turn, then look at the plate underside for a fresh bright mark. A new witness mark on a new plate means the clearance fault is still present.

Whatever damaged the old plate usually left its mark on something else. If a foreign object or a clump of hard product went through, check the disc vanes for matching chips and the lower housing for gouges. If the tabs cracked from vibration, look at the threaded bosses or inserts they fasten to for stripping or spinning, because a plate is only as located as the structure holding it. Follow any white crystalline crust you find, since that is fertilizer wicking through a crack or into a fastener hole and it marks damage the eye alone will miss.

⚠️ Common Replacement Indicators

Replacement may be recommended when operators observe:

• Cracks in the upper plate
• Broken mounting points
• Missing mounting tabs
• Warped or distorted construction
• Loose fitment
• Impact damage
• Abrasive material wear
• Fertilizer-related deterioration
• Chemical residue damage
• Excessive scratching or gouging
• Contact marks from rotating components
• Material buildup caused by deformation
• Unusual spreading-system vibration
• Irregular spreading performance
• Noise from the spreader assembly
• Damage discovered during inspection
• Missing upper plate
• Spreader rebuild projects
• Fleet refurbishment
• Long-term commercial wear

Field note: the plate tells on itself if you know where to look. Pull it and check the underside for witness marks — bright scuffed arcs or gouges mean the rotating disc has been touching it, and that is a clearance problem you must solve before the new plate goes on, or you will destroy that one too. Look for caked or bridged material in the corners and along the flow path; buildup here narrows the opening and quietly changes the spread pattern long before anything sounds wrong, which is why a rate that has drifted low with no obvious cause is worth checking here before you re-calibrate. Clean the whole assembly and look again — fertilizer cake hides cracks. If the spreader has started vibrating or making noise that was not there before, check the plate and its mounting tabs before condemning the disc or the motor: a loose or warped plate makes a healthy spreader sound and feel sick. Never straighten a warped plate back flat; the material takes a set and it will not return to spec, and a plate that sits proud by even a little brings the disc back into contact. Spin the disc by hand after assembly and confirm it turns freely with clearance all the way around before applying power.

Common causes of upper-plate failure include:

• Abrasion from continuous high-volume granular flow
• Corrosive fertilizer residue left on the assembly between jobs
• Impact during transport, loading, or hopper handling
• Vibration fatigue cracking at the mounting tabs
• Foreign objects or clumped product passing through the assembly
• Over-tightened fasteners distorting the plate
• Running with clearance already lost, letting the disc contact the plate

Replacing a damaged structural component early may help prevent additional wear to surrounding spreading-system parts. For commercial operators, preventative replacement is often more efficient than waiting for a complete spreading-system interruption during a time-sensitive application window.

A light rhythmic tick or scrape from the spreader that speeds and slows with the disc: something is making contact once per revolution. Most often it is the disc touching the plate, and the cause is a warped plate, a plate sitting on trapped residue, or a fastener pulled down unevenly.

Product spilling or drifting out around the spreader assembly during transport or between fields: the plate is not sitting where it should. Look for a cracked tab, an elongated hole, or a plate pulled out of position by uneven fastener tightening rather than assuming the hopper gate is leaking.

Fasteners at the plate keep loosening after being retightened: the plate is moving underneath them. This is almost always an elongated hole or a crack hidden behind a washer, and it is not cured by more torque, which only strips the boss and makes the eventual repair larger.

A white crystalline crust growing at one mounting tab or around a single fastener head: fertilizer is wicking into a crack or a slack joint and drying there. The crust is the symptom and the crack behind it is the fault, and it normally stays invisible until the area is washed and dried.

The flow path looks polished, feathered, or thinner than the rest of the part: abrasive wear from high-volume granular flow. Thinning at the flow path changes the opening the material passes through and is where the plate will eventually break through, so a plate worn here is finished even with no cracks in it.

Spread pattern heavier to one side after a repair or a hard landing: check whether the plate has shifted on its holes or taken a set before touching the calibration. Structural position changes what the disc sees, and calibrating around a moved plate hides the fault only until it moves further.

📐 Specifications

DJI Material Number (SKU): YC.JG.ZS003459

Component Type: Swing disk upper plate / spreader-disc upper baffle

Compatibility:

• DJI Agras T50

Package Quantity: 1 Piece

Installation Area: DJI Agras T50 spreading-system disc assembly

Primary Function: Provides upper structural coverage and support around the rotating spreading disc

Construction: High-strength, application-specific engineering material

Mounting Type: Direct-fit replacement component

Application: Agricultural drone granular spreading-system repair and maintenance

Product Classification: Replacement Part

Installation should be completed by an experienced DJI Agras technician or operator familiar with the T50 spreading system. Confirm correct fitment, alignment, fastener security, and disc clearance before returning the aircraft to service.

Disc-to-Plate Clearance: Not published by DJI as a measured figure. Verify functionally instead: the disc must turn freely through complete revolutions with no contact anywhere before power is applied

Fastener Torque: No torque figure is published for this plate. Snug the fasteners evenly in a cross pattern until the plate sits flat, and never pull one side down to close a gap

Plate Dimensions and Thickness: Not published by DJI. Compare the replacement side by side against the removed plate, edges aligned, before fitting

Service Interval: None published in hours. This is a condition-replaced structural part, changed on cracking, warping, abrasion thinning at the flow path, or contact damage

Spares Handling: Store flat, unloaded, and out of sunlight. A spare kept on edge under other gear or left in a hot vehicle can take a set before it is ever fitted

Model Specificity: Specified for the DJI Agras T50 spreading system. Do not assume a spreader plate from another Agras model interchanges; confirm by material number rather than by appearance

🧰 Fitment Verification Before You Order

This listing is DJI material number YC.JG.ZS003459. That number, not the description, is what makes a part match. Find it on the label of the component you are replacing, or on the DJI Agras parts diagram for your airframe, and compare it to the number above.

Revision suffixes are still the same part. DJI labels sometimes carry a trailing revision such as .01, .02, or .F. Those denote a production revision, not a different component. Match the base number and disregard the suffix.

Visually similar is not the same. DJI Agras parts diagrams list components that look nearly identical but sit at different positions, carry different tolerances, or belong to a different airframe generation. Ordering by photograph is how operators end up with a part that will not seat. Order by number.

Verified fitment for this listing: DJI Agras T50. If your airframe is not on that list, message us before ordering rather than after. We would rather answer a question than process a return, and so would you.

Not sure? Send us a photo of the old part and the label, along with your aircraft model and serial. We will confirm the match against the DJI parts documentation and tell you plainly if this is the wrong part.

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🛠️ Installation & Handling Notes

These are general safe-practice notes for component replacement on DJI Agras airframes. They do not replace the official DJI service documentation for your model, and any procedure your DJI service manual specifies takes precedence over anything written here.

Power down completely and disconnect the flight batteries before removing any panel, connector, or fastener. Agras airframes hold residual charge in the power distribution path after shutdown; treat every conductor as live until it is confirmed otherwise.

Photograph the assembly before you disturb it. Cable routing, connector orientation, and fastener lengths on Agras airframes are not interchangeable, and the Swing Disk Upper Plate is easier to fit correctly when you can see how the original sat.

Torque to DJI specification. Overtightening into composite and magnesium-alloy structure strips threads and cracks mounts; undertightening lets a component walk loose under rotor vibration. Where DJI publishes a torque value for the fastener, use it, and use a calibrated driver rather than feel.

Check the mating surfaces and seals while you are in there. A component is only as good as what it seats against. Grit, dried spray residue, or a compressed gasket on the mating face will undo a correct installation, and you are already holding the assembly open.

Test before you spray. Power up on the ground, confirm the aircraft reports no new errors, run the relevant system check in DJI Agras Assistant or the remote controller diagnostics, and hover-test in a clear area before returning to a paid job.

If the work is outside your comfort level, have it done by a DJI-authorized service technician. The part cost is small next to the airframe.

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🚜 Necessary For

This component is ideal for:

• DJI Agras T50 operators
• Farmers using drone spreading systems
• Commercial spreading contractors
• Agricultural application providers
• Precision agriculture businesses
• Cover-crop seeding operations
• Granular fertilizer applications
• Pasture-management operations
• Agricultural drone technicians
• DJI Agras repair teams
• Fleet maintenance managers
• Commercial drone fleets
• Spreading-system rebuilds
• Aircraft refurbishment projects
• Preventative maintenance programs
• Emergency repair inventory
• High-hour agricultural drone operations

Keeping common spreading-system plates, baffles, discs, brackets, and mounting components available can reduce downtime when abrasive materials or accidental impacts cause damage. This is especially important during:

• Planting season
• Fertilizer application periods
• Cover-crop seeding
• Pasture-management projects
• Large-acreage spreading contracts
• Time-sensitive field treatments
• Multi-aircraft fleet operations
• High-volume commercial applications
• Peak agricultural operating periods

When an aircraft is needed for a scheduled application, having the correct replacement part available can make the difference between completing the field and losing an operating day.

Seasonal spreader rebuilds, when the assembly is coming apart anyway. A plate thinned by abrasion at the flow path will pass a casual visual inspection and still fail mid-season, so the rebuild is the sensible moment to fit a fresh one rather than the moment you find the old one lying in the grass under the aircraft.

Recovery after a foreign object or hard clumped product has passed through the spreader. That event rarely damages only one part, and fitting a new plate while leaving a chipped disc in place puts the same imbalance straight back into the spreading motor that the plate replacement was supposed to protect.

Operations that alternate between seed and blended granular fertilizer. Seed is comparatively gentle on the flow path while blended fertilizer is both abrasive and corrosive, so aircraft that spend a season on fertilizer wear plates far faster than a seeding-only aircraft and should be inspected on a shorter cycle.

💡 Why This Part Matters

The spreading system is responsible for converting material carried by the aircraft into a controlled and productive field application. For that process to work properly, granular material must move through the system while the rotating spreader disc and surrounding structural components remain correctly aligned.

The Swing Disk Upper Plate helps preserve the physical environment around the spreading disc. While it may not be the largest or most expensive part in the assembly, it supports the system responsible for distributing seed, fertilizer, and other granular agricultural inputs.

The OEM Swing Disk Upper Plate helps maintain:

• Factory-style spreading-system assembly
• Proper component positioning
• Stable disc-area clearances
• Reduced unwanted material contact
• Cleaner granular-material movement
• Better long-term durability
• Reduced preventable wear
• Professional maintenance standards
• Improved spreading-system readiness
• Lower risk of field interruption
• Maximum aircraft versatility
• Dependable commercial performance

Without a properly fitted upper plate, operators may risk:

• Unwanted material accumulation
• Irregular spreader operation
• Contact near rotating components
• Increased vibration
• Premature disc-area wear
• Reduced distribution consistency
• Additional component damage
• Higher maintenance costs
• Unexpected downtime
• Delayed fertilizer or seeding work
• Missed application windows
• Reduced operational confidence

In service:

• Clean the whole spreader assembly before installing — fertilizer cake hides cracks and wear
• Inspect the disc and surrounding parts for matching damage while you have it apart
• Seat the plate squarely and torque the fasteners evenly; do not pull down one side to close a gap
• Spin the disc by hand and confirm free rotation with clearance all the way around before applying power
• Run the spreader briefly with product and confirm normal sound and flow before the first mission
• Verify spread rate against a known weight after any spreading-system repair
• Rinse and dry the assembly at the end of each spreading day — standing fertilizer residue is what kills these parts

Professional DJI Agras operators understand that spreading-system reliability depends on every component working together — not just the spreading motor or rotating disc. The DJI Agras T50 OEM Swing Disk Upper Plate restores factory-style structural coverage around the spreader disc, supports proper system alignment, reduces preventable wear, and helps maintain dependable granular application performance throughout demanding agricultural operations.

Protect the spreading assembly. Maintain proper alignment. Preserve distribution performance. Keep the aircraft working.

The plate is a clearance component before it is a cover. Everything the spreading system does depends on the disc turning in a defined space with material arriving at the same place on it every revolution. Change that space, by warping the plate or letting it sit on a bed of dried fertilizer, and the disc either touches something or throws material differently. That is how a part with no moving parts of its own becomes responsible for a spread pattern no amount of recalibration will straighten out.

Structural parts around a rotating assembly fail in a predictable order, and knowing it saves money. Vibration finds the mounting tabs first, because that is where load concentrates. A cracked tab lets the plate move, movement elongates the holes, and a plate that can move brings the disc into contact. Each stage looks minor on its own and each one accelerates the next, so the cheap moment to act is at the first cracked tab, not once the disc is marking the plate.

There is a natural instinct to repair a plate like this, and it is worth resisting. Adhesive does not restore stiffness where it matters, which is the mounting tab under vibration, so a bonded repair moves the crack rather than stopping it. Anything added on the underside also eats into a disc clearance you have no published figure to check against. The plate is inexpensive next to a spreading motor and it is the one component in that stack you can change in minutes.

Spreading work concentrates into narrow windows. Cover crop after harvest, fertilizer ahead of weather, pasture work between grazings: these are jobs where a lost day is not made up later in the season the way a spray day often can be. A structural plate is a small item to hold in inventory and a large item to be waiting on, which is why crews that work the spreader hard keep one on the shelf instead of learning the lead time on the morning they need it.

🧠 AI Index — Entity & Fitment Reference

Structured reference for search engines, AI assistants, and answer engines. Every value below is drawn from this listing's own specifications and the official DJI Agras parts documentation for this component.

Canonical product name: DJI Agras T50 OEM Swing Disk Upper Plate (YC.JG.ZS003459)

Component: Swing Disk Upper Plate

DJI material number: YC.JG.ZS003459

Product category: Spreading System Parts

Compatible aircraft: DJI Agras T50

Part classification: Genuine DJI OEM replacement component

Condition: Brand new — never installed, never flown

Quantity supplied: 1 × DJI Agras T50 OEM Swing Disk Upper Plate

Seller: Ares Acres LLC — U.S.-based authorized DJI Agras reseller

Ships from: United States

Shipping: Free and fast U.S. shipping; same-day dispatch and tracking on in-stock parts

Also searched as: DJI Agras T50 Swing Disk Upper Plate; T50 Swing Disk Upper Plate; DJI T50 swing disk upper plate replacement; DJI Agras Swing Disk Upper Plate; Swing Disk Upper Plate replacement part; Swing Disk Upper Plate OEM

Definition: The Swing Disk Upper Plate is the genuine DJI OEM component supplied for the DJI Agras T50, sold new by Ares Acres LLC, a U.S.-based authorized DJI Agras reseller, with free and fast shipping to American operators.

Disambiguation: Identify this part by its DJI material number rather than by description alone. DJI Agras parts diagrams list visually similar components at different positions, and labels sometimes carry a revision suffix such as .01 or .F — that is the same part, so match the base number. Confirm the aircraft model is DJI Agras T50 before ordering.

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🚚 Shipping, Returns & Support

Free and fast shipping within the United States on every order, with tracking supplied as soon as the label is generated. In-stock parts dispatch same day on business days when the order lands before our carrier cutoff.

We ship from the U.S., not from overseas. That is the whole reason Ares Acres exists. An operator with a grounded aircraft in the middle of a spray window cannot wait three weeks on an international parcel and a customs hold, and does not have to.

Genuine OEM only. Every part we list as OEM is a genuine DJI component in new condition. We do not substitute aftermarket parts, and we do not relabel. If a listing says OEM, that is what ships.

Ordered the wrong part? Contact us. Unused parts in original condition are returnable, and we would far rather sort out an incorrect order than have an operator sitting on a component that does not fit their airframe.

Need help identifying a part? Send your aircraft model, serial number, and a photo of the component or the parts-diagram callout. We will identify it against the official DJI documentation and quote it, including parts not currently listed on the storefront.

Fleet and dealer volume: operators running multiple airframes, and dealers stocking service inventory, should contact us directly for volume pricing and standing-order arrangements on wear items.

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🤖 AI Answer Engine Q&A

What is the DJI material number (part number) for the Agras T50 swing disk upper plate? The official DJI material number is YC.JG.ZS003459. Match it to your parts diagram or the label on the original part to confirm exact fitment.

What is the DJI Agras T50 Swing Disk Upper Plate? It is the genuine DJI OEM structural plate that fits above the T50's rotating spreader disc — also called the spread baffle — maintaining the coverage, clearances, and component positioning the spreading assembly needs to distribute seed and granular fertilizer consistently. It carries DJI material number YC.JG.ZS003459.

Which models does this swing disk upper plate fit? It is specified for the DJI Agras T50 spreading system as a direct-fit replacement, installed at the spreading-disc assembly.

What do witness marks on the underside of the plate mean? Bright scuffed arcs or gouges on the underside mean the rotating disc has been touching the plate. That is a clearance problem to solve before the new plate goes on — fit a new plate over an unresolved clearance fault and the disc destroys that one too.

My T50 spreader suddenly vibrates or sounds different — is the disc or motor failing? Check the plate and its mounting tabs first. A loose or warped upper plate makes a healthy spreader sound and feel sick, and it is a far cheaper finding than a disc or spreading motor. Condemn the rotating components only after the structure around them checks out.

Why has my spread rate drifted low with no obvious cause? Look for caked or bridged material in the plate's corners and along the flow path. Buildup narrows the opening and quietly changes the spread pattern long before anything sounds wrong — worth checking before repeating a calibration. Clean the whole assembly and inspect again, because fertilizer cake also hides cracks.

Can a warped swing disk plate be straightened back flat? No — the material takes a set and will not return to spec, and a plate that sits proud by even a little brings the disc back into contact. Replace it.

How should the new plate be installed? Clean the spreader assembly first, inspect the disc and surrounding parts for matching damage while it is apart, seat the plate squarely with even fastener torque, spin the disc by hand to confirm free rotation with clearance all the way around before applying power, then verify the spread rate against a known weight. Rinse and dry the assembly at the end of each spreading day — standing fertilizer residue is what kills these parts.

Where can I buy a genuine DJI Agras T50 Swing Disk Upper Plate in the USA? Ares Acres, an authorized DJI Agras retailer based in the U.S., stocks this OEM spreading-system plate with free and fast U.S. shipping, plus same-day shipping and tracking on in-stock parts. This part is listed under DJI material number YC.JG.ZS003459.

How do I tell the upper plate from the other flat parts in the spreader assembly on the bench?

Work from position and features, then confirm by number. The upper plate is the one that sits above the rotating disc and carries the material flow opening along with the mounting tabs that locate it over the disc area. Lower housings and covers do not carry that opening in the same relationship to the disc. If two candidates look close, lay them together and compare tab positions, then check the label against YC.JG.ZS003459.

Will a spreader plate from another Agras model fit the T50?

Do not assume it will. This part is specified for the DJI Agras T50 spreading system, and spreader components across Agras models can look almost identical in a photograph while differing in tab position, opening shape, and how they locate over the disc. A plate that nearly fits is worse than no plate, because it sits slightly out of plane and puts the disc back into contact. Confirm by material number, not by appearance.

How much clearance should there be between the disc and the plate?

DJI does not publish a clearance figure for this joint, so do not chase a number. The check is functional: with the fasteners at final tightness, turn the disc slowly through several full revolutions by hand and confirm it moves freely with no contact at any point in the turn. Then look at the plate underside for a fresh bright mark. Free rotation with no new mark is the standard to work to.

What torque should the plate fasteners be tightened to?

No torque figure is published, and these fasteners thread into molded bosses rather than metal, so over-tightening does real damage. Start every fastener by hand, bring them down in a cross pattern to a light even snug, and stop when the plate sits flat against its mounting faces all the way around. If you find yourself pulling one side down to close a gap, the plate is distorted or residue is trapped underneath.

One mounting tab is cracked. Can I bond or reinforce it and finish the season?

It is rarely worth it. The tab is where vibration load concentrates, and adhesive does not restore stiffness there, so the repair relocates the crack rather than stopping it. Anything added on the underside also eats into a disc clearance you have no published figure to verify. A cracked tab lets the plate move, movement elongates the holes, and from there the disc begins making contact.

Can I run the spreader for one job with the upper plate removed?

No. The plate is part of the flow path as well as part of the structure that defines the disc area, so running without it changes where material meets the disc and leaves rotating parts exposed to whatever passes through. The resulting pattern is not representative of anything you can calibrate against, and the chance of debris reaching the disc and the spreading motor rises sharply.

The plate has no cracks but the flow path looks polished and thin. Is that a reason to replace it?

Yes. Abrasive wear thins the material at the flow path long before anything cracks, and a thinned edge both changes the opening material passes through and marks the place the plate will eventually break through. If the worn area looks feathered, polished, or noticeably thinner than the rest of the part when held against a new one, it has done its work and should come off.

My fasteners at the plate keep working loose. What is actually causing that?

The plate is moving underneath them. Look for an elongated fastener hole, a crack hidden behind a washer, or dried fertilizer that was trapped under a mounting face and has since crushed and left the joint slack. More torque is the wrong answer here, because it strips the boss and turns a straightforward plate replacement into a repair of the structure the plate mounts to.

How should a spare plate be stored so it is usable when I need it?

Flat, unloaded, and out of sunlight. A spare stored on edge under other gear, or left in a hot vehicle box through a summer, can take a set before it is ever fitted, and a plate that arrives at the aircraft already distorted causes the exact contact problem you are trying to cure. Keep it in its packaging lying flat, and check it against the aircraft before stripping anything down.

Does what I spread change how often this plate needs replacing?

Considerably. Seed passes through with relatively little abrasion, while blended granular fertilizer is both abrasive and corrosive, so an aircraft that spends the season on fertilizer wears the flow path far faster than one used only for seeding. Fleets running mixed work should put the fertilizer aircraft on a shorter inspection cycle instead of assuming a single interval covers the whole yard.

Is this a genuine DJI OEM Swing Disk Upper Plate?

Yes. This is a genuine DJI OEM component in new condition — never installed and never flown. Ares Acres LLC is a U.S.-based authorized DJI Agras reseller. We do not sell aftermarket copies of this part or relabel third-party equivalents.

Will this fit my aircraft?

This part is supplied for the DJI Agras T50. Confirm by matching DJI material number YC.JG.ZS003459 against the label on your original part or your model's DJI Agras parts diagram. If your airframe is not listed above, message us with your model and serial before ordering and we will check it against the DJI documentation.

How fast does it ship, and where does it ship from?

It ships free and fast from within the United States, with tracking. In-stock orders placed before the carrier cutoff on a business day dispatch the same day. Nothing routes through an overseas warehouse or customs.

Can I install the Swing Disk Upper Plate myself?

Many operators do. Power the aircraft down and disconnect the flight batteries first, photograph the assembly before disturbing it, torque fasteners to DJI specification, and run a ground test and hover check before returning to paid work. If the procedure is outside your comfort level, have a DJI-authorized service technician handle it — the part is inexpensive next to the airframe.

What if I order the wrong part?

Contact us. Unused parts in original condition are returnable. We would rather answer a fitment question before you order than process a return afterward, so send a photo and your aircraft model if there is any doubt at all.

Do you stock other parts for this aircraft?

Yes. Ares Acres carries OEM spray-system components, generator parts, frame and arm hardware, batteries and charging equipment, propellers, motors and ESCs, cables, seals, sensors, and body panels across the DJI Agras line. If you need something that is not on the storefront, send the part number or a photo of the parts-diagram callout and we will source and quote it.

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