Caixa de engrenagens para enfardadeira quadrada EP-180-250HP (EP-FK263)
O EP-FK263 Square Baler Gearbox is a high-performance speed-increasing transmission unit engineered for large-scale square balers. Featuring an aggressive 1:2.69 gear ratio, it accelerates a 760 r/min input to a rapid 2045 r/min output, maximizing plunger frequency for superior throughput. Designed for extreme heavy-duty applications, this gearbox handles a nominal power of 180 hp with a robust maximum capacity of 250 hp. It utilizes precision Gleason Straight Teeth, ensuring exceptional strength and durability under high-speed, high-load conditions. Built to withstand the rigors of intensive harvesting, the EP-FK263 delivers reliable power transfer and extended service life. Custom specifications are available to meet specific OEM requirements, making it the ideal choice for high-capacity agricultural machinery.
Agricultural Transmission · Square Baler Series
Caixa de engrenagens para enfardadeira quadrada EP-180-250HP (EP-FK263)
Um serviço pesado square baler gearbox engineered for high-volume, large-format baling at 180 hp nominal and 250 hp peak — built to sustain the intense cyclic loading of industrial-scale baling in wheat, hay, silage, and specialty-crop operations across every major agricultural region.
Technical Specifications — EP-FK263
All parameters below are drawn directly from the EP-FK263 engineering data sheet and manufacturing drawings. Power figures correspond to standardized agricultural PTO test conditions. Contact us for custom variants.
| Tipo | Gear Ratio (i) | Adequado para | RPM Input (r/min) | RPM Output (r/min) | KW Nom (hp) | KW Max (hp) | Toothing |
|---|---|---|---|---|---|---|---|
| Speed Increase | 1 : 2.69 | Square Baler, etc. | 760 | 2045 | 180 | 250 | Gleason Straight Teeth |
Outline Dimensions (mm)
| Overall Height (mm) | Overall Width (mm) | Housing Depth (mm) | Base Footprint L × W (mm) | Input Flange Bore (mm) | Output Flange Bore (mm) | Mounting Bolt |
|---|---|---|---|---|---|---|
| 395.8 | 310.0 | 450.0 | 270.0 × 165.0 | Ø125.0 (+0.06/+0.01) | Ø90.0 (+0.06/+0.01) | 4 × M12 / 4 × M10 |
| Remark: Special shaft dimensions, keyways, and surface coatings are available on request. Custom configurations accepted. | ||||||
What Is the EP-FK263 Square Baler Gearbox?
The EP-FK263 is a purpose-built square baler gearbox designed for large commercial balers and high-output agricultural operations where the 80–120 hp class is simply not enough. Operating at a gear ratio of i = 1:2.69, it accepts 760 r/min at the input shaft and delivers 2045 r/min to the drive side — a significant speed step that enables the baler's plunger, knotter, and flywheel assembly to cycle at the rates demanded by modern large-square baler designs. Rated at 180 hp nominal with a certified 250 hp peak capacity, this unit carries the power headroom that commercial baling contractors and large farm operations genuinely need when pushing throughput limits in dense or moist crop conditions.
Entendimento what a square baler gearbox is used for at this power level clarifies the engineering priorities. In a large square baler, the gearbox is the central node that translates tractor PTO power into precisely timed motion across the plunger, knotter mechanism, and stuffer chute. At 180–250 hp, any structural weakness in the gear set, housing, or bearing arrangement becomes apparent very quickly — through noise, heat, or catastrophic tooth failure. The EP-FK263 is designed to none of those outcomes: it uses Gleason Straight Teeth gear profiles on carburized alloy steel gear sets, seated in a ductile iron housing that is dimensionally stable under both thermal cycling and shock loading.
Whether you are sourcing a replacement square baler gearbox for a worn original unit or specifying components for a new machine platform, the EP-FK263 brings together the speed ratio, power capacity, and dimensional envelope that large-format balers require. Its mounting geometry accommodates the full range of heavy-duty square baler frames, and custom shaft dimensions and surface treatments are available for OEM integration.
How Does This Square Baler Gearbox Work?
The EP-FK263 enters the drivetrain at the PTO connection point, where tractor engine power arrives at 760 r/min — a higher input speed than the standard 540 r/min class, reflecting the more demanding drive system of large-scale baling equipment. Inside the housing, a Gleason Straight Teeth gear pair transmits that rotation through a ratio of 1:2.69, stepping output speed up to 2045 r/min. That output speed feeds the baler's main crankshaft or flywheel drive directly, enabling the plunger to cycle at the frequency needed to form large, consistently dense bales at high field throughput.
The relatively high step-up ratio — nearly 2.7:1 — means the torque at the output shaft is lower than the input, while speed is proportionally higher. The gear teeth carry heavy instantaneous loads each time the plunger reverses direction against compacted crop. Gleason Straight Teeth geometry distributes those loads across the full face width without the axial thrust that helical teeth produce, which simplifies bearing load cases and makes the square baler gearbox behavior more predictable under real field conditions. The ductile iron housing acts as a rigid structural member, preventing distortion that would compromise gear mesh geometry under peak torque events.
At 250 hp peak, this square baler gearbox is among the highest-rated units in the agricultural market. Operators running large-format balers — common in UK and Australian broad-acre grain regions, as well as North American commercial hay contracting — will recognize that at this power level, gearbox margin is not a luxury. A unit sized only to nominal power can shear teeth on a straw plug or dense windrow within a season. The EP-FK263's 70 hp surge margin keeps the drivetrain intact when conditions spike beyond the average.
The three-view engineering drawing confirms a compact, well-proportioned housing: 395.8 mm tall, 310.0 mm wide, with a base footprint of 270.0 × 165.0 mm and a total drive-side depth of 450.0 mm. Both input and output flanges carry oversized precision bores — Ø125.0 mm input, Ø90.0 mm output — to accommodate the heavy-wall shafting that high-torque agricultural drives demand.
Five Reasons to Choose the EP-FK263
Here is why agricultural engineers and procurement teams consistently select this square baler gearbox for large-format baling platforms.
1 · High Step-Up Ratio at 1:2.69
A 1:2.69 gear ratio delivers 2045 r/min output from a 760 r/min input — a performance range that matches the drive requirements of modern large-square baler designs. This ratio enables fast plunger cycling rates without oversizing the tractor's PTO speed, making the gearbox compatible with high-horsepower PTO-driven drive systems across the major tractor brands used in USA, UK, and Australian commercial operations.
2 · 250 hp Peak Capacity — Real Safety Margin
Nominal 180 hp ratings describe average-condition performance. What separates a reliable new square baler gearbox from an undersized one is peak tolerance. The EP-FK263 is tested and verified at 250 hp — a 38% headroom above nominal. Dense alfalfa, high-moisture silage crop, and sudden feed surges from misaligned windrows all push gearboxes beyond their nominal ratings routinely. This margin is what keeps the unit in service through a full season.
3 · Large-Bore Precision Flanges
Input bore Ø125.0 mm and output bore Ø90.0 mm are engineered to tolerances of +0.06/+0.01 mm, providing a reliable interference-and-clearance fit for heavy-duty shafting. The four-bolt M12 and M10 flange patterns on input and output sides respectively match large baler frame standards, enabling drop-in installation on most commercial platforms without secondary machining. This is a practical consideration for contractors sourcing a replacement square baler gearbox mid-season.
4 · Carburized Gleason Teeth — Verified Wear Resistance
The Gleason Straight Teeth profile, combined with carburizing and case hardening of the gear material to HRC 58–62 at the tooth surface, produces a component that resists pitting and micropitting under high-cycle agricultural loads. Gear tooth geometry is inspected post-heat-treatment by CMM to confirm contact pattern and pitch accuracy. Users sourcing agri supply square baler gearbox components for demanding crop conditions can rely on this documented quality standard.
5 · Three-Axis Compact Envelope
Despite its high power class, the EP-FK263 fits within a 395.8 × 310.0 × 450.0 mm three-dimensional envelope. The base footprint of 270.0 × 165.0 mm keeps the mounting interface compact relative to the power transmitted. This matters particularly for retrofitting onto existing large baler frames where space between the gearbox and the baler chamber structure is constrained — a common scenario when replacing worn gearboxes on second-generation machine platforms.
Materials, Build Standards & Technical Authority
The EP-FK263 is engineered from the component level up, not assembled from generic parts. At 250 hp peak, every material decision carries real structural consequence.
Material de construção
Ductile iron (GGG50 / QT500-7 class) cast to controlled wall thicknesses. Dimensional stability under cyclic thermal load, with tensile strength significantly above grey iron, and genuine crack arrest performance under sudden impact loading.
Material da engrenagem
20CrMnTi alloy steel, gas-carburized to a case depth matched to the calculated contact stress for a 250 hp duty cycle. Surface hardness HRC 58–62. Tooth flanks finish-ground after heat treatment on dedicated bevel gear grinders to ensure contact pattern accuracy.
Shaft Material
42CrMo4 alloy steel, quenched and tempered to 280–320 HB for a balance of fatigue strength and toughness. Input and output shaft journals are ground to h6 tolerance for reliable bearing fit. Splined or keyed configurations available for integration with OEM PTO yokes.
Rolamentos
Heavy-duty tapered roller bearings at all shaft positions, selected for the combined radial and axial loads generated by the 1:2.69 step-up ratio at full power. Bearing bores are precision-bored after housing casting to maintain alignment under load.
Sealing System
Double-lip NBR oil seals rated −25 °C to +130 °C at both shaft exits. Lip geometry prevents crop dust ingress — a practical necessity on open-field agricultural equipment. Oil fill and drain ports positioned for easy field servicing without removing the gearbox from the frame.
Quality System
ISO 9001:2015 certified manufacturing process. Incoming raw material is batch-tested for chemical composition and mechanical properties. Finished gearboxes undergo CMM dimensional check, gear contact pattern verification, and no-load run-in testing before packaging.
The technical content on this page is produced by a team with more than ten years of direct experience in agricultural and industrial mechanical transmission design. Parameter data is sourced from engineering drawings and factory test records.
Where Is This Square Baler Gearbox Used?
The EP-FK263 serves the demanding end of agricultural baling — commercial-scale operations where the square baler gearbox must run long daily hours across a compressed harvest window.
Large-Format Commercial Hay Baling
Hay contractors producing high-density large-square bales for export or long-distance transport require consistent bale weight and tight dimensions. The EP-FK263's 250 hp peak tolerance ensures the plunger completes its stroke fully even in windrows with elevated moisture — the most common cause of density variation in commercial hay production across North American and European markets.
Broad-Acre Grain Straw Recovery
Wheat, barley, and canola straw recovery has grown substantially as bedding material demand rises in the Netherlands, UK, and Australian grain belt regions. Large balers working behind combine harvesters face variable swath widths and periodic slug feeds. The square baler gearbox at this power class handles these inertia events without fatigue, keeping square baler pickup systems feeding continuously without stoppages.
Industrial Biomass Baling
Hemp stalk, corn stover, and purpose-grown energy grass are increasingly processed into large-square bales for biomass power and biogas facilities. These materials — denser and more fibrous than conventional crops — stress gearboxes more than hay does. The EP-FK263 is the appropriate square baler gearbox for sale to biomass contractors who need documented peak power capacity for project planning and equipment lease agreements.
Silage Crop Pre-Processing
Chopped silage crops baled prior to wrapping are among the densest, highest-moisture materials a baler handles. Silage baling at commercial scale almost always requires a square baler gearbox at the higher end of the power spectrum. The EP-FK263's 180 hp nominal rating ensures the gearbox runs within its thermal design limit throughout a full day's baling, rather than drifting toward overtemperature that accelerates oil degradation and bearing wear.
OEM Machine Manufacturing
Agricultural machinery manufacturers specifying gearboxes for new large-square baler platforms need a unit with documented dimensional data, certified power ratings, and a supply chain that can support serial production. The EP-FK263's engineering drawing package, ISO 9001 certification, and custom-configuration availability address all three requirements — making it a viable new square baler gearbox choice for OEM procurement in South Korea, Brazil, Canada, and Colombia as well as European markets.
Matched Components — One-Stop Supply for Square Baler Systems
UM square baler gearbox delivers its rated performance only when the driveline upstream and downstream is correctly matched. We supply the full system — from tractor hitch to baler frame — to remove sourcing uncertainty and ensure every interface is dimensionally and dynamically compatible.
Eixo da tomada de força da enfardadeira quadrada
Connecting the tractor to the EP-FK263 gearbox requires a PTO shaft rated for the full 250 hp surge capacity. Our eixo da tomada de força da enfardadeira quadrada range covers wide-angle configurations, overrunning clutch models, and shear-bolt overload protection variants. Input-side shaft speed compatibility with the 760 r/min gearbox input is confirmed for all standard tractor hitch heights. System compatibility data is available from our engineering team for any tractor-baler combination.
Square Baler Machines
For buyers integrating gearboxes into a new machine build or comparing machine options, our full series square baler lineup — including hammer-claw type machines with 2200 mm picking width — provides complete equipment backed by the same manufacturing standards as the gearbox. Sourcing both the machine and its drivetrain components from one manufacturing base eliminates interface risk and simplifies documentation for export customs, warranty, and after-sales support across commercial markets globally.
Trade Terms & Delivery Information
The following terms apply to the EP-FK263 square baler gearbox and matched agricultural drivetrain products.
| Item | Detail |
|---|---|
| MOQ | High-value drive products evaluated by configuration and total order value. Mixed models (gearboxes, shafts, square baler parts) can be combined to reach approx. USD 1,500. Single-unit orders accepted at adjusted pricing. |
| Lead Time — Standard | Standard gearbox (stock spec, no custom machining): 20–45 working days. Standard with simple customization (bore, keyway, surface treatment): 15–35 working days. |
| Lead Time — Custom | Non-standard gear ratio, OEM shaft configuration, or special housing features: 45–75 working days. Project evaluation required before confirmed lead time. |
| Amostras | 1–5 sample units available for new customers where appropriate. Sample lead time: 7–25 working days (complex configurations assessed per project). |
| Trade Terms | EXW, FOB, CIF, DAP standard. FCA, CFR, CPT, CIP, and DDP negotiable. Recommended for transmission equipment: FOB / CIF / DAP / EXW. |
| Mixed Orders | Multiple model numbers — EP-FK263 gearbox, PTO shafts, square baler parts kits — can be consolidated into a single shipment. |
| Certificação de Qualidade | ISO 9001:2015 certified. Batch inspection, CMM dimensional check, gear contact pattern verification, and no-load run-in test prior to shipment. |
About Us — Over a Decade of Transmission Engineering
Mechanical power transmission has been our core focus for more than ten years. Our production scope covers agricultural gearboxes, worm gear reducers, planetary gear drives, PTO shafts, hydraulic cylinders, drive chains, gears, and motors — a product range that spans the full drivetrain requirements of both agricultural and industrial machinery. The EP-FK263 square baler gearbox is one of many precision-engineered products manufactured under our ISO 9001:2015 certified quality management system.
We design and produce an extensive range of gearboxes and transmission assemblies in ductile iron, cast iron, cast steel, precision cast steel, and cast aluminum. Our machining capabilities extend to gears, sprockets, worm gears, pulleys, worms, shafts, and both standard and non-standard mechanical parts. This breadth means that a buyer specifying a square baler gearbox can also source compatible PTO shafts, sprockets, and drive chains from the same engineering and manufacturing base — simplifying supply chain management significantly for OEM and aftermarket applications alike.
Our export team serves distributors, equipment dealers, and OEM manufacturers across North America, Europe, Australia, South Korea, Brazil, and Colombia, providing dimensional data packages, test reports, and customs documentation as standard with every commercial order.
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