John Deere Combine Parts: What Wears Out Most Often, How to Choose, and Where to Order Made-to-Sample Replacements

John Deere combines deliver proven performance across Ukraine in wheat, corn, sunflower and rapeseed. Still, in peak harvest even a minor part failure is costly. This guide covers the components that most often need replacement, practical selection tips, a brief look at current JD series, and how Bas-Agro LLC can help — from buying online to manufacturing John Deere parts from a drawing or a physical sample.

Current John Deere combine series (2024–2025)

S7 Series — the new generation of rotary combines. Engines include JD14 13.6 L or JD9 9.0 L (model-dependent), an X9-level cab, and integrated electronics (G5 Plus, StarFire, JDLink). S7 800 and S7 900 offer grain tanks up to 400 bu (~14,095 L), with features like Predictive Ground Speed and Harvest Settings Automation.

X-Series (X9 1000 / X9 1100) — flagship capacity: up to 690 hp, unload rates up to ~186.7 L/s, grain tank up to ~16,210 L, and advanced precision ag packages.

T-Series (T5 / T6) — walker combines for gentle threshing and simple servicing: very large active separation area and stated throughput up to 55 t/h on 6-walker configurations.

History note. John Deere dates back to 1837, when the founder built the first successful self-scouring steel plow — the seed from which a global company grew.

Most common wear items: a section-by-section checklist

Header (grain/sunflower/corn)

• knife sections, fingers/guards, cutterbar wear plates;
• auger fingers, reel tines;
• feeder/auger conveyor chains and sprockets.

Feederhouse

• slat chains, drive/idler sprockets, bearings;
• guides and tensioning assemblies.

Threshing & separation

• rotor rasp bars, concaves/sieves, separator fingers;
• variators, V-belts, bearing supports.

Cleaning system

• upper/lower sieves (chaffer/sieve), guides, bushings and joints on the cleaning shoe;
• fan belts.

Straw/residue chopper

knives, counter-knife, rotor bearings.

Drivetrain & undercarriage

• belts and chains, rollers, tensioners, brake pads;
• for tracks — pads/shoes, rollers, guides.

Hydraulics & electronics

high-pressure hoses, seals, position/speed sensors, connectors.

Crop specifics in Ukraine: sunflower husk abrasives punish the cutterbar, concaves and chopper; in corn, feeder chains/sprockets and chopper knives wear faster; in wheat, dust loads the sieves and fan drives.

Choosing parts: OEM, Reman, Aftermarket or made-to-sample

1. Genuine John Deere (OEM) — maximum fit and service life.
2. John Deere Reman — remanufactured units with OEM warranty.
3. A&I Products — alternative parts brand within Deere & Company.
4. Custom manufacturing — when parts are obsolete, need design tweaks, special materials, or rush production for the season.

Where to buy John Deere parts online

Browse the John Deere combine parts catalog at Bas-Agro:  https://bas.ua/shop/compatible-with-john-deere-000000031-1

• Stocked items for S, X and T series (including header consumables).
• Part selection by model/subassembly and expert consultation.

Made-to-sample John Deere parts — at Bas-Agro

When a part isn’t readily available, Bas-Agro accepts small-batch and one-off orders. We work from drawings, 3D models, or a physical sample with reverse engineering.

• Machine park & processes:
• CNC turning (shafts/bushings, multi-pass machining);
• Gear hobbing (gears and sprockets);
• Broaching (internal splines, long keyways);
• EDM (electrical discharge machining) — precise profile holes and complex geometries;
• Drilling/boring;
• Press-brake sheet forming;
• Sheet laser cutting;
• Powder coating of finished parts and assemblies.

Case video (recent order): John Deere part manufacturing — watch the short clip: https://youtube.com/shorts/xF1r2ZLTcy0

Practical in-season care to reduce wear

• Pre-season: drives (belts/chains), bearings, sieves, fan, knife and concave condition, hydraulic lines; sensor calibration.
• Daily: belt/chain tension, bearing play, sieve clogging, bearing temperature (contact thermometer), chopper knife condition.
• Post-season: deep clean, storage prep, defect list for replacement, order any custom/obsolete parts ahead of next season.

FAQ

Can you replicate a part exactly if I only have a sample?
Yes. We take precise measurements, 3D-scan if needed, select material and heat treatment, agree on tolerances, and produce a one-off or a small batch.

How long does manufacturing take?
Depends on complexity and shop load. Simple turned parts are faster; gear/EDM parts take longer. We provide an estimate after reviewing the drawing/sample.

What materials do you work with?
Carbon and alloy steels (incl. for case hardening/quenching), stainless steels, wear-resistant steels for knives/wear plates, polymers/rubber for dampers and seals.

Do you provide painting?
Yes — full-cycle powder coating.

How to order from Bas-Agro

1. Send a drawing or sample of the part.
2. Agree on material, tolerances, heat treatment and any coating.
3. We confirm lead time and cost and the batch size (one-off/small batch).
4. Production, QA, shipping.

Contacts & catalog: https://bas.ua

To keep John Deere machines performing, maintain a small stock of critical consumables and partner with a made-to-sample manufacturer for rare or obsolete parts. Bas-Agro LLC offers both: an online catalog of John Deere combine parts and in-house manufacturing from CNC machining to powder coating.
Let’s get you through harvest with zero downtime!