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Round Baler Gearbox EP250-YJ for Round Baler and Harvester
Round Baler Gearbox for Round Baler / Hay Harvester — model EP250-YJ.
Detailed Technical Specifications — EP250-YJ
The Round Baler Gearbox EP250-YJ for Round Baler and Harvester is engineered as a round baler gearbox for round baler / hay harvester applications. Designed to drive the rotor and roller chain mechanisms of round balers, the unit covers 60–150 HP input ratings and is built for medium-heavy intermittent load during bale formation.
| Serie / Modell | EP250-YJ |
|---|---|
| Ansökan | Round Baler / Hay Harvester |
| Utväxlingsförhållande | 1:1 – 1:1.5 |
| Ingångshastighet (varv/min) | 540 varv/min / 1000 varv/min (valbart) |
| Ingående axel | 1 3/8″ 6-spline (PTO-standard) |
| Utgående axel | Solid kilaxel Ø40 mm |
| Gear Accuracy Grade | ISO 1328 grade 7 |
| Gear Tooth Finish | Lapped after carburizing |
| Bearing Type (Input) | Deep groove ball bearing |
| Bearing Type (Output) | Tapered roller bearing pair |
| Referens för lagermärke | HRB / LYC / domestic premium |
| Lagerkonstruktionens livslängd | L10h ≥ 8,000 h |
| Smörjningstyp | Syntetisk växellådsolja GL-5 |
| Oljekapacitet | 1.5 L |
| Oljeavtappning | Magnetic drain plug |
| Andningsplugg | Top-mount vented breather |
| Tätningstyp | Double-lip skeleton oil seal |
| Inträngningsskydd | IP65 |
| Driftstemperatur | -20 °C to +80 °C |
| Ljudnivå (utan belastning) | ≤ 70 dB(A) |
Engineering Features of the Round Baler Gearbox
Each of the cards below describes a specific, measurable attribute of the EP250-YJ unit. Generic claims have been kept out — every number here is tied to a manufacturing process or a verified test result.
Kompatibilitet och korsreferens
The EP250-YJ is designed as a drop-in or close-substitute fit for a number of OEM gearbox positions used on tractors and round baler / hay harvester implements globally. The table below summarizes commonly cross-referenced brands. Final fitment must be verified by physical dimension matching.
| Stämpla | Utrustningssortiment | Anteckningar |
|---|---|---|
| Massey Ferguson | tractors and hay tools | korsreferens; verifiera med fläns- och axeldimension |
| Kverneland | tillage and seeding machinery | korsreferens; verifiera med fläns- och axeldimension |
| Pottinger | forage equipment | korsreferens; verifiera med fläns- och axeldimension |
| John Deere | traktorer och kraftuttagsredskap | korsreferens; verifiera med fläns- och axeldimension |
| Fendt | traktorer och skördemaskiner | korsreferens; verifiera med fläns- och axeldimension |
| Deutz-Fahr | traktorer och skördetröskor | korsreferens; verifiera med fläns- och axeldimension |
Tillgängliga reservdelar (säljs separat)
- Mounting flange gasket
- Replacement housing (HT250)
- Bult- och bricka-sats
- Ingående pinjong-underenhet
- Utgående konisk kugghjul
- Koniska rullagersats
How to Select the Right Round Baler Gearbox
Use the three-step approach below to match a EP250-YJ-class unit to your tractor and implement.
- Mäta — registrera traktorns kraftuttagsstandard (540/1000 varv/min, splineantal), redskapets ingående axeldiameter och längd samt det tillgängliga bultmönstret vid redskapets nos.
- Match — cross-check those measurements against the spec table for the EP250-YJ. The flange, shaft, and ratio need to all line up before moving on.
- Verifiera under belastning — bekräfta att den nominella ineffekten och utgångsmomentet är tillräckliga för dina maximala driftsförhållanden (t.ex. våt jord, tät gröda, kallstart).
Checklista för urvalskriterier
| Urvalskriterium | Beslutspunkter |
|---|---|
| Redskapstyp → utväxlingsmatchning | For round baler / hay harvester, target gear ratio in the 1:1 – 1:1.5 range for correct rotor or output speed. |
| Traktorns kraftband | Match input power rating to your tractor: 60–150 HP is the practical envelope for the EP250-YJ family. |
| Kraftuttagsvarvtal (540 vs 1000 varv/min) | 540 varv/min är standard på traktorer under 100 hk; 1000 varv/min föredras på maskiner med 100+ hk och där högre utgående hastighet krävs. Bekräfta traktorns kraftuttagseffekt innan du specificerar. |
| Höljets material | Gjutjärn (HT250 / QT500) för tung kontinuerlig drift; aluminiumlegering där viktminskning och snabb värmeavledning är viktiga, t.ex. små redskap som flyttas ofta. |
| Layout | Rätvinkliga (90°) enheter omdirigerar kraftuttagskraften till en vinkelrät arbetsaxel; radmonterade enheter bibehåller axelns uppriktning. Välj baserat på redskapets geometri. |
| Standard kontra anpassad | Standardmodeller täcker huvuddelen av OEM-positioner. För icke-standardiserade utväxlingar, speciella axeländar, överdimensionerade flänsar eller specifikationer för tuffa miljöer, begär en specialbyggd modell. |
| Axeländsgränssnitt | Verifiera ingående kraftuttagsstandard (6-splines, 21-splines, 20-splines) och utgående ände (kilförsedd, splinesad, flänsad) mot din drivlina och ditt redskap. |
| Arbetsmiljö | Mycket damm, lera, saltstänk eller extrem kyla kan kräva IP66-klassade tätningar, syntetisk olja för låg temperatur eller korrosionsskyddande ytbehandling – specificera vid offertförfrågan. |
Typiska tillämpningar och kraftöverföringsuppgifter
The EP250-YJ is engineered for round baler / hay harvester. The scenarios below describe the specific power-transmission tasks the gearbox is designed to handle, with details of mounting position, drive path, and the technical demand on the gear and bearing set.
Variable-Chamber Round Baler
Drives the bale-forming belts and rollers. Continuous moderate torque, occasional peak loads when starting a wet or heavy bale.
Fixed-Chamber Round Baler
Drives the rotor and chamber rollers via combined gear and chain transmission.
Net-Wrap Drive
Auxiliary drive for net-wrap dispenser. Brief high-torque cycles when net engages the bale.
Installations- och driftsättningsguide
Correct installation of the round baler gearbox is the single biggest factor in achieving the design service life. Follow the steps below, in order. Skipping or compressing any step usually shows up as oil leak, premature bearing failure, or noise within the first season.
- Säkerhetsförberedelser. Stäng av traktorns motor, ta ur nyckeln, koppla ur kraftuttaget, dra åt parkeringsbromsen och lägg hjulblock. Använd skyddshandskar och ögonskydd. Kontrollera att redskapet står på stabila stöd innan något arbete på drivlinan påbörjas.
- Kontrollera växellådan före montering. Check that the EP250-YJ model number, input flange dimensions, and input/output shaft specifications match both your tractor PTO and the implement input shaft. Mismatched flange or spline patterns will not be corrected by force-fitting.
- Fill with lubricant. Before first use, fill with the specified lubricant — typically SAE 80W-90 GL-5 — to the centre of the oil-level window. Refer to the spec table for the exact oil capacity for your unit; underfilling causes early bearing wear, overfilling raises oil temperature and stresses seals.
- Mount and torque the bolts. Bolt the gearbox flange to the implement using the OEM bolt set. Tighten in a diagonal pattern in three passes to the final torque (~ 110 N·m for M14 grade 8.8). Even loading prevents flange distortion and seal leak paths.
- Connect the input PTO shaft. Attach the PTO drive shaft yoke to the gearbox input shaft. Confirm the locking pin or push-pull collar fully engages. Re-attach the safety shield with both retaining chains hooked to the tractor and implement, never spinning with the shaft.
- Connect the output shaft. Slide the output shaft into the implement working shaft, align keys or splines, and lock with the supplied retaining nut and washer. Verify shaft end-float is within manufacturer tolerance — usually 0.05 mm to 0.20 mm.
- Check shaft alignment. With the gearbox bolted and shafts connected, slowly rotate by hand. Total run-out (TIR) at the input and output should not exceed 0.10 mm. Any tight spot or audible scrape indicates an alignment issue that must be corrected before powered operation.
- No-load test run. Engage the PTO at low engine RPM (idle to 540 RPM) for five to ten minutes. Listen for unusual noise, watch for oil seepage, and check housing temperature by hand — it should be warm to the touch but not hot enough to be uncomfortable.
- Run-in under partial load. For the first 50 hours of duty, avoid full-rated load. Vary speed and load lightly to seat the gear teeth and bearings. After the run-in period, drain the lubricant — it will contain microscopic break-in particles — and refill with fresh oil of the same grade.
- Establish a maintenance schedule. Inspect oil level every 200 operating hours or weekly during heavy use. Drain and replace the gear oil every 500 hours or once per season, whichever comes first. Wipe the housing exterior after each shift to prevent soil buildup that traps moisture against seals.
Our Round Baler Gearbox vs. Low-Quality Alternatives
Not every gearbox sold as an “agricultural” unit is engineered for the job. The dimensions below compare the EP250-YJ class build to the typical low-cost imported alternative.
| Dimension | Low-quality unit | Our build | User benefit |
|---|---|---|---|
| Documentation | Generic instruction sheet | Per-unit inspection card with backlash, torque, run-in noise | Full traceability if a warranty event occurs. |
| After-sales support | Discounter-only, no engineering contact | Direct factory support, 24-hour technical reply | Faster resolution if a field issue appears. |
| Gear material | Plain 45# steel, no heat treatment | 17CrNiMo6, carburized & quenched, HRC 58–62 surface | Triples gear life under typical PTO loads. |
| Höljets material | Thin-wall HT150 grey iron, prone to cracking | HT250, wall thickness ≥ 8 mm, tensile ≥ 250 MPa | Survives shock loads from rocks and stumps without structural failure. |
| Gear accuracy | Hobbed only, ISO 1328 grade 9 | CNC-ground, ISO 1328 grade 6, noise ≤ 72 dB(A) | Quieter operation and longer fatigue life. |
| Bearing grade | Unbranded, no published rating | Premium tapered roller bearings, L10h ≥ 10,000 h | Predictable service life under design loading. |
| Oil seals | Single-lip rubber, hardens and leaks within months | Double-lip skeleton seal with PTFE wear face, IP65 | Lubricant stays in, dust and water stay out. |
| Mesh efficiency | < 90%, runs hot under load | ≥ 97% for spiral bevel mesh, temperature rise ≤ 35 °C | More tractor HP reaches the implement; less wasted as heat. |
| Dynamic balance | Not measured | Rotor groups balanced to ISO G6.3 | Eliminates vibration-driven bearing failure. |
Vanliga frågor
Common questions from buyers evaluating the EP250-YJ for their fleet or implement build. If your situation is not covered, send us the details and we will respond within one working day.
When should I specify a 540 RPM input vs. a 1000 RPM input?
Do you offer OEM and custom-spec gearboxes? What are the minimums?
What is your warranty policy and how do I make a claim?
What certifications do you hold and is your product suitable for Australian farms?
How long is the lead time for a stock order vs. a custom build?
Customer Feedback from the Field
Selected feedback from operators using the EP250-YJ or related units in commercial round baler / hay harvester duty across multiple countries. Names are anonymized using city + initials for privacy.
Companion Products & Drivetrain Accessories
A round baler gearbox usually sits in the middle of a longer drivetrain. The items below complete the typical agricultural power-transmission package.
Certifications & Quality Standards
- ISO 9001:2015 — Quality management system covering design, manufacturing, and inspection processes.
- ISO 6336 — Reference standard for the load-capacity calculation of cylindrical and bevel gears.
- DIN 3960 / DIN 3961 — Tooth profile and accuracy class definitions used for gear quality grading.
- EN ISO 11684 — Pictorial safety signs and warning marks for agricultural machinery.
- CE marking — Conformity with the EU Machinery Directive 2006/42/EC where applicable.
- AS 4024 — Australian machinery safety framework — referenced for OEM units bound for AU farms.
- Material certification — Mill certificates for gear and shaft alloys; hardness, composition, and metallographic data on file per batch.
Outgoing Inspection Workflow
Each batch passes through: incoming raw-material inspection → forging and machining first-article check → heat-treatment hardness sample test → gear-accuracy measurement on Klingelnberg-class testers → assembly torque verification → no-load run-in and acoustic record → final visual and packaging check. Inspection records travel with the carton.
Notes for Australian Buyers
Units shipped into Australia for use on commercial farms should be reviewed against the relevant state WHS (Work Health and Safety) requirements and the round baler gearbox fitted with all guards specified by the implement OEM. Common search terms used by Australian buyers include agricultural gearbox Australia, farm gearbox supplier Australia, Queensland tractor parts, NSW farm equipment, and Victoria agricultural machinery — let us know your state and intended implement and we will recommend the matching configuration.
Why Buy from Us — Factory & Brand Strength
Factory background
We have been manufacturing agricultural gearboxes including the round baler gearbox family at our facility for over a decade. The plant covers a substantial machining and assembly area with dedicated heat-treatment, gear-cutting, gear-grinding, and final-assembly bays, and a year-round skilled workforce in production and quality.
Production capability
Annual capacity covers tens of thousands of units across the catalogue. Critical equipment includes CNC gear-hobbing centres, CNC gear-grinders, sealed-quench heat-treatment furnaces, three-coordinate measuring machines (CMM), gear-tooth contact testers, and dedicated run-in test stands. Tooling and dies for the most popular models are kept on standby to cut response time on repeat orders.
Export footprint
We currently export to dozens of countries, with primary markets in Australia, North America, Europe, and Southeast Asia. Common search terms used by international buyers include agricultural gearbox manufacturer China, custom farm gearbox supplier, and OEM gearbox factory — and our sales team is set up to handle drawing reviews and technical conversations in English.
OEM / ODM capability
Our standard custom flow is: drawing or sample submission → engineering review and quote → 3D model and prototype tooling sign-off → first-article sample → small pilot batch → serial production. Lead times for new tooling typically run 30–60 days; repeat builds run inside 20–30 days.
MOQ & lead time
Standard catalogue models: MOQ from one carton (5–50 units depending on size). Custom builds: typical MOQ 50 units. Standard lead time 7–15 days for stock items, 30–45 days for custom first runs.
Quality control
Each batch passes through ISO 9001:2015 governed inspection, raw-material composition and hardness testing, in-process gear accuracy verification, final assembly torque sign-off, and a 30-minute no-load run-in test recorded per unit.
After-sales
12-month standard warranty on workmanship; extended warranty for OEM contracts. Technical email response inside 24 hours, and replacement parts dispatched within working days for valid warranty cases.
Custom application?
Non-standard ratio, special shaft end, oversized flange — we build to drawing. Share your spec and we will reply with a build plan.
We do more than supply standard agricultural gearboxes. Bring us your drawings, samples, or even a rough sketch — our engineering team will design and manufacture a precision gearbox solution tailored to your exact application.
⏱️ We respond within 24 hours · ️ 12-month standard warranty · ISO 9001:2015 certified production · Years of agricultural gearbox export experience including direct shipments to Australia.
