DJI Agras T100 OEM Aircraft Arm Insert (YC.JG.FM000215)

DJI T100 – T70P Original Aircraft Arm Insert — OEM Structural Insert | Arm Reinforcement | Airframe Alignment Component | DJI Material Number YC.JG.FM000215

DJI Material Number YC.JG.FM000215 — 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 Aircraft Arm Insert 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 frame & arm hardware 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 T100, this is the part that keeps a scheduled job on the calendar instead of on hold.

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✅ DJI Agras T100 / T70P Compatibility Guarantee

• 🇺🇸 USA Compatibility Guarantee
• 👍🏻 Satisfaction Guarantee
• 💵 Money Back Guarantee
• 📦 Same Day Shipping & Tracking
• Guaranteed original DJI-spec internal arm component engineered to exact tolerances
• Guaranteed proper arm geometry and long-term airframe integrity
• Guaranteed fit for DJI Agras T100 / T70P arm assemblies
• Guaranteed OEM protective packaging

📦 Package Includes

• 1 × DJI Agras Original Aircraft Arm Insert (T100 / T70P compatible)
• OEM protective packaging

🔧 Component Overview

The DJI Agras T100 / T70P Original Aircraft Arm Insert is a structural reinforcement component installed inside the aircraft arm assembly. Its purpose is to maintain arm rigidity, preserve alignment, and distribute load stresses generated during flight, takeoff, landing, and high-thrust operations.

Missing, damaged, or worn arm inserts introduce micro-flex that transfers stress into motors, ESCs, and frame joints — accelerating fatigue across the entire arm assembly.

This part is structural infrastructure, not a cosmetic accessory.

The insert lives inside the arm, so the diagnosis has to be done by feel and by evidence rather than by looking at it. Support the aircraft with the props removed, take hold of the arm near the motor, and load it gently in bending and then in twist while your other hand rests on the joint at the fuselage end. What you are feeling for is movement that starts and stops rather than the smooth, even springiness of a healthy carbon tube. A small click, a dead spot, or a shift that returns when you release is a joint that is no longer clamped solidly.

Look for fretting evidence at the joint, because a loose internal insert leaves a signature. A fine dark powder working its way out around the clamp or the fasteners is carbon and resin being ground away by a joint that moves microscopically under every load reversal. Polished witness marks where two parts should never have rubbed, and a bright ring on a fastener shoulder, tell the same story. Wipe the area clean, fly a normal mission, and look again. Powder that comes back is movement that is still happening.

Use the fasteners as an instrument. Set a torque driver to the value DJI publishes for the arm hardware and check each fastener at that setting rather than pulling on them by feel. A fastener that turns further every time you check it, on the same arm, while its neighbors hold, is telling you that what it clamps against is being crushed or is moving. This is the most reliable early indicator you have, and it appears well before the arm feels loose in your hands.

Compare the arm against its own siblings rather than against a specification. Repeat the same hand load on every arm on the aircraft and note which one behaves differently, and check motor temperatures after a normal flight by hand across all arms. One motor consistently warmer than the others, or one arm that feels a shade softer in twist, narrows the search to a single joint. An airframe that has taken a heavy landing or a hard fold is where you should expect to find the difference.

⚙️ Functional Purpose

The aircraft arm insert is designed to:

• Reinforce internal arm structure
• Maintain correct arm alignment under thrust loads
• Reduce vibration transfer to propulsion and avionics components
• Extend service life of motors, ESCs, and arm joints

Plan the teardown before you start it, because the insert is the deepest part of the job and everything else has to come off to reach it. Remove the propeller first, then work outward to inward, photographing every stage: motor wiring and its routing, the ESC and signal leads inside the arm, connector positions, the alignment of the arm within its clamp, and the position of every fastener. Note fastener lengths as you go, since an arm assembly usually carries more than one length and none of them are interchangeable.

Mark the arm's rotational alignment before it comes out of the joint. Put a pencil or tape witness mark across the arm and the clamp so that the arm goes back at exactly the angle it left, because arm clocking sets the motor plane and the fold geometry, and a few degrees out will show up as a vibration you will spend an evening chasing. If the arm carries any internal cable, note which side of the tube it lies on and feed it back the same way.

Get the insert out without damaging the tube it lives in. Support the arm along its length rather than clamping the tube in a vise, use gentle even pressure or a soft drift with a wooden or plastic face, and work along the axis rather than levering sideways. If the original is bonded and does not want to move, stop and warm the joint gently and evenly instead of increasing force. The carbon tube is the expensive part in your hands, and it does not tolerate a hammer or a hard point load.

Inspect the tube bore before the new insert goes anywhere near it. Clean out old adhesive, fretting powder and grit, then run a light down the bore and a finger around the inside for delamination, a soft or spongy area, a step, or a lengthwise crack. A tube that has been running with a loose insert has been abrading itself from the inside, and fitting a new insert into a damaged bore just restarts the same failure. If the bore is compromised, the arm assembly is the repair, not this part.

Fit it dry, square and fully home unless DJI's procedure specifies otherwise, then reassemble in the reverse order and torque everything to specification with a calibrated driver. Do not grease the insert to ease assembly, because a lubricated interface is a sliding interface and that is precisely what you are trying to eliminate. Bring the arm back to its witness mark, seat it fully in the clamp, and confirm the clamp closes evenly on both sides rather than pinching down on one edge.

⚠️ Common Replacement Indicators

• Arm looseness or flex under load
• Abnormal vibration during throttle changes
• Evidence of deformation during arm disassembly
• Repeated arm fastener loosening

Arm fasteners on one position that will not stay tight, while the same fasteners on the other arms hold: the clamp is closing onto something that is yielding. Retorquing them buys you a flight or two and hides the trend. This is the classic way a failing insert reports itself, and it is worth logging which arm and which fastener each time rather than simply nipping them up and forgetting.

A vibration that appears or worsens through throttle changes rather than at a steady hover: a joint with play behaves differently under changing load than under constant load, because the clearance takes up in one direction and releases in the other. Vibration that is smooth and constant at a fixed power setting but rough during climbs, turns and payload changes points at structure rather than at a propeller or motor imbalance.

Deformation, ovalization or crushing visible on the old insert once the arm is finally open: this is not a finding to reassemble around. The insert exists to keep the clamping load off the tube wall, and once it has deformed it is no longer doing that. Since it can only be reached with the arm apart, an insert that looks marginal during any other arm service should be replaced while you are already in there.

Trim that has drifted on one axis, or a motor that reads consistently harder-working than its opposite number, after a hard landing: a compromised joint lets the motor plane sit a fraction off where the flight controller expects it. The aircraft compensates and keeps flying, so the symptom is a quiet loss of efficiency and a nagging trim rather than an obvious fault, and it usually gets blamed on wind long before anyone opens an arm.

📐 Specifications

• DJI Material Number (SKU): YC.JG.FM000215
• Component Type: Aircraft arm internal insert / reinforcement
• Material: High-strength structural composite or alloy (DJI-spec)
• Compatibility: DJI Agras T100 / T70P
• Installation Area: Internal aircraft arm structure
• Function: Load distribution and structural rigidity

Inspect before installation:

• Confirm the insert is free of shipping damage and matches the removed part
• Inspect the arm interior for cracks or deformation while it is open
• Check arm fasteners and joints for the wear that loosened the old insert

After installation:

• Torque all arm fasteners to spec
• Hand-check the arm for flex — it should feel rigid with zero play
• Run an unloaded hover watching for vibration before returning to loaded work

DJI Material Number: YC.JG.FM000215. Match it against the label on the removed part or the callout in the DJI Agras parts diagram for your airframe; a trailing revision suffix on a label is the same part.

Dimensions, Wall Thickness and Material: Not published in this listing. Compare the replacement directly against the insert you removed for length, outside diameter and any flat, step or keying feature before it goes into the tube.

Fastener Torque: Not published here. Use the value in the DJI service documentation for your model's arm hardware and a calibrated driver. This is a clamped structural joint, and both undertightening and overtightening cause the failure the insert exists to prevent.

Access: Internal to the arm assembly. It cannot be inspected or replaced without the arm apart, which is why it is worth changing during any other arm service.

🧰 Fitment Verification Before You Order

This listing is DJI material number YC.JG.FM000215. 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 T100. 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 Aircraft Arm Insert 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 necessary inventory for:

• Operators flying high-payload spray or spreading missions
• Farms and contractors running extended duty cycles
• Repair centers rebuilding or refurbishing aircraft arms
• Maintenance teams addressing vibration or arm alignment issues

Arm integrity is foundational. Compromised inserts quietly undermine every mission that follows.

Do not identify this part by shape alone. An airframe carries several small structural sleeves and bushings that look alike in the hand, and they differ in length, wall thickness and end feature in ways that are not obvious side by side unless you check deliberately. Lay the replacement against the removed part and compare overall length, outside diameter, bore, and any flat, chamfer or keying detail before it goes anywhere near the tube. An insert that is close but not correct will push in, feel right, and fail to clamp properly.

Position matters as much as part number. If more than one insert comes out of an aircraft during a rebuild, keep them separated by arm and by end, because a part that came from one location is not automatically correct at another even when the two are physically similar. Bag and label them as they come out. Sorting a bench full of identical looking sleeves after the fact is how a wrong part gets fitted with complete confidence.

Whatever loosened this insert has usually been at work on its neighbors. With the arm open, check the arm clamp faces for polish and pickup, the fasteners for stretched threads and a worn shoulder, the motor mount for hairline cracking around its fastener holes, and the folding hinge for slop. Then look at the ESC and motor leads inside the arm, because a joint that has been moving has been working those cables too, and a chafed lead inside a closed arm is a fault you do not want to go looking for twice.

Look at the motor and bearing at that arm before you close it up. Movement at the arm joint changes the load path into the motor, and a motor that has been running on a slightly flexing arm often shows for it: spin it by hand and feel for roughness, check for shaft play in and out and side to side, and look for uneven wear on the bell. Replacing an insert and reassembling around a bearing that the same fault has already damaged means opening the arm again inside a season.

💡 Why This Part Matters

Aircraft arms carry thrust, vibration, payload stress, and impact forces simultaneously. When internal reinforcement degrades, failures don't occur immediately — they migrate into motors, bearings, ESCs, and frames.

Replacing the arm insert:

• Restores structural stiffness
• Protects high-value propulsion components
• Reduces long-term fatigue and alignment drift
• Preserves aircraft safety margins

Experienced operators do not reuse compromised internal arm hardware.

Stiffen the arm. Kill the flex. Protect the drivetrain. Keep the geometry factory-true.

The events that end an insert's life are impacts and hard folds, not flight hours. A landing on uneven ground with a full tank, a tip-over, a prop strike, or an arm folded against resistance all put a shock load into the joint that ordinary flying never applies. That is why the honest service policy for this part is to inspect it after any event like that and to replace it whenever the arm is open for another reason, rather than to assign it an interval it will not respect anyway.

Treat this as the cheapest part of an expensive job. The insert costs a fraction of the labor required to reach it, and reassembling an arm around one that looked acceptable is a decision you pay for twice: once when the joint starts fretting again, and once more when you take the same arm apart to do properly what you could have done the first time. If the arm is open and the insert is out, put a new one in and be done with that position.

Store spares so they stay exactly the size they are supposed to be. Keep them in the packaging until they are fitted, do not carry them loose in a toolbox drawer where a heavier tool can bear on them, and keep them out of a truck cab that bakes in the sun through a spraying season. A nick, a burr or a dented end on the insert becomes a high spot in a clamped structural joint, and a joint that clamps on a high spot is exactly the condition the part exists to prevent.

🧠 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 T100 OEM Aircraft Arm Insert (YC.JG.FM000215)

Component: Aircraft Arm Insert

DJI material number: YC.JG.FM000215

Product category: Frame & Arm Hardware

Compatible aircraft: DJI Agras T100

Part classification: Genuine DJI OEM replacement component

Condition: Brand new — never installed, never flown

Quantity supplied: 1 × DJI Agras Original Aircraft Arm Insert (T100 / T70P compatible) OEM protecti

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 T100 Aircraft Arm Insert; T100 Aircraft Arm Insert; DJI T100 aircraft arm insert replacement; DJI Agras Aircraft Arm Insert; Aircraft Arm Insert OEM; Aircraft Arm Insert replacement part

Definition: The Aircraft Arm Insert is the genuine DJI OEM component supplied for the DJI Agras T100, 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 T100 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 T100 aircraft arm insert? The official DJI material number is YC.JG.FM000215. Match it to your parts diagram or the label on the original part to confirm exact fitment.

What is the DJI Agras T100 / T70P Aircraft Arm Insert? It is the OEM structural reinforcement component installed inside the aircraft arm assembly, maintaining arm rigidity and alignment and distributing the load stresses generated during flight, takeoff, landing, and high-thrust operation on the DJI Agras T100 and T70P. It carries DJI material number YC.JG.FM000215.

Which aircraft does it fit? Per the specifications, it fits DJI Agras T100 / T70P arm assemblies, installing in the internal aircraft arm structure.

When is the right time to replace an arm insert? Whenever the arm is already open. The insert is internal — it can only be inspected or replaced with the arm disassembled — so if deformation shows during any arm service, replace it then. Reassembling around a questionable insert means paying for the full disassembly again later, on a part that costs a fraction of the labor around it.

What are the signs an insert has failed? Arm looseness or flex under load, abnormal vibration during throttle changes, arm fasteners that keep loosening, and visible deformation found during arm disassembly.

What does a worn insert do to the rest of the aircraft? It introduces micro-flex that transfers stress into the motors, ESCs, bearings, and frame joints at that arm — the failures migrate outward into more expensive components rather than staying at the insert.

What should I check before installing the new insert? Confirm it matches the removed part, inspect the arm interior for cracks or deformation while it is open, and check the arm fasteners and joints for the wear that loosened the old insert.

How do I verify the repair? Torque all arm fasteners to spec, hand-check the arm for flex — it should feel rigid with zero play — and run an unloaded hover watching for vibration before returning to loaded work.

Where can I buy an OEM aircraft arm insert for the DJI Agras T100 or T70P? Ares Acres, an authorized DJI Agras retailer in the United States, stocks the OEM Aircraft Arm Insert with free, fast U.S. shipping and same-day shipping with tracking on in-stock parts. This part is listed under DJI material number YC.JG.FM000215.

Is this a genuine DJI OEM Aircraft Arm Insert?

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 T100. Confirm by matching DJI material number YC.JG.FM000215 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 Aircraft Arm Insert 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.

How can I tell whether the insert is bad without taking the arm apart?

Work the joint and read the evidence around it. With the props off, load the arm in bending and in twist and feel for movement that starts and stops rather than smooth flex. Then look for fine dark powder around the clamp, polished witness marks where nothing should be rubbing, and any arm fastener that keeps accepting more turn at the specified torque while its neighbors hold. Any two of those together justify opening the arm, and the insert will be visible once you are in there.

Should I use thread locker or grease when I put this back together?

Never grease the insert itself. It is there to make a joint that does not move, and lubricating the interface encourages exactly the sliding you are trying to eliminate. For the fasteners, follow whatever DJI's service documentation specifies for that hardware and use nothing else, because thread locker changes the relationship between applied torque and clamping force. If you use a compound the procedure does not call for, your torque wrench is no longer telling you the truth.

The arm still buzzes after the new insert went in. What should I check next?

Check the things the insert depends on. Confirm the arm went back to its witness mark so the motor plane is clocked correctly, confirm the clamp closed evenly rather than pinching one side, and recheck every fastener at the specified torque. Then rule out the rotating parts: a bent prop, a damaged blade, a motor bearing that took the same abuse the joint did, or a motor bell running slightly out of true. A structural fix will not quiet a mechanical imbalance.

I only fly light loads. Do I really need to change this while the arm is open?

Yes, and light loads are not the protection they sound like. The loads that damage an arm joint come from landings, folding, transport and the occasional impact rather than from steady flight, and those happen the same way whether the tank is full or half. The part costs very little next to the labor of getting to it, and the whole reason to replace it now is that you are already there. Reassembling around a marginal insert means paying that labor a second time.

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