Kotak Gear Pengikat Segi Empat EP-120-140HP (EP-FK270)
Agricultural Transmission · Square Baler Series
Kotak Gear Pengikat Segi Empat EP-120-140HP (EP-FK270)
A mid-range square baler gearbox engineered for the 120–140 hp duty class — featuring a 1:1 direct drive ratio and Gleason Straight Teeth gear profile. Designed to deliver steady, full-speed torque transfer across demanding baling cycles in hay, straw, and mixed-crop operations worldwide.
Technical Specifications — EP-FK270
Parameters below are taken directly from the EP-FK270 engineering drawing and data sheet. All power figures are referenced to standardized agricultural PTO test conditions. Custom variants available on request.
| Type | Gear Ratio (i) | Sesuai Untuk | RPM Input (r/min) | RPM Output (r/min) | KW Nom (hp) | KW Max (hp) | Toothing |
|---|---|---|---|---|---|---|---|
| Decelerate | 1 : 1 | Square Baler, etc. | 540 | 540 | 120 | 140 | Gleason Straight Teeth |
Outline Dimensions (mm)
| Overall Height (mm) | Overall Width (mm) | Body Depth (mm) | Base Footprint (mm) | Flange Width (mm) | Bolt Hole Dia. (mm) | Housing Width (mm) |
|---|---|---|---|---|---|---|
| 335.9 | 334.0 | 270.0 | 294.0 × 118.8 | 147.0 (×2) | 4 × Ø17.0 | 208.0 |
| Remark: Custom shaft configurations, bore dimensions, and surface treatments are accepted. Contact us with your specifications. | ||||||
What Is the EP-FK270 Square Baler Gearbox?
The EP-FK270 is a direct-drive square baler gearbox with a 1:1 transmission ratio — meaning input and output shaft speeds are identical at 540 r/min. This deceleration-class configuration is less about speed conversion and more about power conditioning: it maintains tractor PTO speed while isolating the baler's drive mechanism from torsional vibration and inertia shock events that would otherwise travel back up the driveline and damage the tractor or the PTO shaft. Rated at 120 hp nominal and 140 hp peak, this model bridges the gap between the entry-level 80 hp class and the high-output 180+ hp units — serving the mid-range hay farming, straw baling, and mixed-crop operations that make up the majority of global square baler usage.
Memahami what a square baler gearbox is used for in this power range clarifies why the 1:1 ratio is a valid engineering choice. In many square baler designs, particularly those targeted at the 100–140 hp tractor market segment, the baler's main drive crankshaft is already sized to run at 540 r/min directly. Adding a speed step at the gearbox would require a corresponding speed correction elsewhere in the drivetrain. The EP-FK270 avoids that by maintaining the PTO speed throughout, simplifying the overall drive layout and reducing the number of potential failure points in the system.
Sebagai seorang square baler gearbox replacement candidate, the EP-FK270 is particularly suitable for operators upgrading worn-out mid-size baler gearboxes or equipping refurbished machines entering a second service life. Its dimensional envelope — 335.9 mm overall height, 334.0 mm overall width, 270.0 mm body depth — fits the frame geometry common across a wide range of mid-size square balers produced over the past two decades.
How Does This Square Baler Gearbox Work?
The EP-FK270 operates as a deceleration-type gearbox with a 1:1 ratio, which is a less immediately intuitive configuration than a speed-increasing unit. At 540 r/min input and 540 r/min output, no speed conversion takes place — the value this square baler gearbox delivers comes from how it manages torque and isolates the drivetrain. Tractor PTO power enters at the input shaft and passes through the Gleason Straight Teeth gear mesh before exiting at the output. The gear mesh provides a controlled, rigid coupling that dampens torsional impulses generated by the baler's plunger stroke reversal, preventing those shockwaves from traveling directly back through the PTO shaft into the tractor's transmission.
In practical terms, how a square baler gearbox works in this class is that it functions as a torque-stable power bridge. The plunger applies massive cyclic force against compacted crop in the bale chamber, and each forward-stroke termination event sends a reverse torque spike back through the drivetrain. A well-designed gearbox at the 120–140 hp level needs to absorb, damp, and re-deliver power smoothly within a fraction of a second per stroke cycle. The EP-FK270 uses tapered roller bearings at both shaft positions, sized for the combined radial and axial loads at 120 hp nominal operation, with a certified 140 hp peak margin providing meaningful headroom for surges in dense crop conditions.
The three-view engineering drawing reveals a housing that is relatively tall and narrow: 335.9 mm height, 208.0 mm housing width at the face, with a 294.0 mm base length and 118.8 mm base width. Four Ø17.0 mm bolt holes in the base flange provide the mounting interface. The side shaft positions (Y and Z axes in the drawing) align with standard mid-size baler frame mounting centers, making this a practical drop-in replacement square baler gearbox for many existing machine types.
The gear center distance relationship visible in the right-view drawing — with three gear positions at 135.0 mm spacing intervals and a 181.5 mm lower-section center-to-center dimension — reflects the internal power flow path that gives the EP-FK270 its structural rigidity under cyclic loading. Square baler gearbox operation at this shaft layout results in well-distributed housing wall loads, which is why the ductile iron casting can maintain structural integrity over the thousands of duty cycles that commercial baling involves.
Five Key Advantages of the EP-FK270
Why operators across multiple global markets select this square baler gearbox when mid-range power capacity and dimensional compatibility are the deciding factors.
1 · 1:1 Direct Drive — Drivetrain Simplicity
A 1:1 gear ratio eliminates the need for compensatory speed adjustments elsewhere in the baler's drivetrain. The PTO shaft runs at 540 r/min, and the baler drive shaft receives exactly 540 r/min — a configuration that simplifies knotter timing setup and reduces the number of variables when diagnosing bale density or tie-failure issues. Operators familiar with the baler's existing drive design benefit most: what they know about the machine at a given PTO speed still applies after fitting this new square baler gearbox.
2 · 140 hp Peak — Headroom for Dense Crop
With a nominal rating of 120 hp and a peak of 140 hp, the EP-FK270 carries a 16% power headroom above the working load. That margin may seem modest in percentage terms, but at 120 hp the absolute energy involved in a surge event is substantial. Dense alfalfa windrows and high-moisture barley straw both generate plunger-stall forces that can spike briefly to 140 hp — and a correctly rated square baler gearbox handles these events without tooth fatigue or oil film breakdown in the bearing raceway.
3 · Compact Proportions for Tight Frame Envelopes
The 208.0 mm housing face width and 270.0 mm depth give the EP-FK270 a lean profile that fits within the mounting envelopes common on mid-size square balers from major agricultural markets. The 4 × Ø17.0 mm base bolt pattern on a 294.0 × 118.8 mm footprint matches widely-used baler mounting flange standards, making this a practical choice when sourcing a kit square baler gearbox for a retrofit or refurbishment project without structural modification to the baler frame.
4 · Gleason Straight Teeth — Controlled Mesh Contact
The Gleason Straight Teeth profile produces predictable, measurable tooth contact patterns that can be inspected and documented. In agricultural settings where gearboxes work far from service centers, a tooth form that degrades gradually and predictably — rather than failing suddenly from fatigue micropitting — gives operators time to schedule maintenance. This characteristic makes the EP-FK270 a defensible choice for buyers sourcing agri supply square baler gearbox components who need documented, repeatable part quality across multiple units.
5 · Verified Under ISO 9001:2015 QMS
Every EP-FK270 exits the manufacturing process through a documented inspection sequence under an ISO 9001:2015 certified quality management system. Dimensional checks, tooth contact pattern verification, and a no-load run-in test are completed before packaging. For agricultural equipment distributors in markets like South Korea, Brazil, Canada, and the Netherlands where import documentation requirements include quality certificates, this certification removes a procurement barrier that informal suppliers cannot address.
Materials & Manufacturing Standards
At 120–140 hp, a square baler gearbox is a mid-critical component — not the highest-stress class, but still subject to enough cyclic loading over a season that material shortcuts show up quickly as bearing wear or tooth fatigue. The EP-FK270 is engineered to the following material standards.
Perumahan
Ductile iron (GGG50 / QT500-7 equivalent), cast to controlled wall thickness. Tensile strength significantly above grey iron grades, with crack-arrest properties that matter when inertia shocks propagate through the housing from sudden plunger-stall events during square baler operation.
Gear Set
20CrMnTi alloy steel, gas-carburized and case-hardened to HRC 58–62 at the tooth surface. Gleason Straight Teeth flanks finish-ground after heat treatment. Contact pattern inspected by CMM prior to assembly — a standard that separates manufactured-to-spec gear sets from machined-to-fit approximations.
Shafts
42CrMo4 alloy steel, quenched and tempered to 280–320 HB. Shaft journals ground to h6 tolerance for reliable bearing seat fit. Splined and keyed end configurations available to match the yoke standards used across major tractor and baler platforms in North American and European markets.
Bearing
Heavy-duty tapered roller bearings, selected for combined radial and axial load capacity at 140 hp peak. Pre-assembled with precision spacers to maintain correct axial preload. Bearing bores machined after housing casting to maintain concentricity and ensure long-term shaft alignment.
Pengedapan
Double-lip NBR oil seals at both shaft exits, rated −20 °C to +125 °C. The double-lip design on the input shaft specifically addresses dust ingress from the baler's crop handling environment — a real-world failure mode on single-lip seals operating in wheat or straw dust during summer harvest.
Pensijilan Kualiti
ISO 9001:2015 certified manufacturing. Incoming material batch-tested for chemical composition and hardness. Finished units pass dimensional inspection, gear contact verification, and a documented no-load run-in test before dispatch. Test records available on request for commercial buyers.
The technical content presented here reflects more than ten years of hands-on engineering experience in agricultural and industrial mechanical transmission. All parameter data is sourced from factory engineering drawings and test records, not derived from third-party references.
Senario Aplikasi
The EP-FK270 targets the mid-range of the agricultural baling market — power class and dimensional fit make it suitable across the following use cases where this square baler gearbox consistently proves its worth.
Mid-Size Farm Hay Baling
Farm operations running 100–130 hp tractors across alfalfa, clover, and grass hay crops represent the primary market for the EP-FK270. At this scale, the baler runs 8–14 hours a day during peak cutting windows, and the gearbox must deliver consistent performance without requiring mid-season maintenance stops. The 140 hp peak rating absorbs the density spikes that humid early-cut alfalfa produces reliably, while the 1:1 ratio keeps knotter timing stable shift after shift — a practical benefit that experienced square baler pickup system operators recognize immediately.
Wheat & Rye Straw Recovery
Straw recovery post-harvest is an important secondary income stream for grain farms across North America, the UK, and European markets including the Netherlands and Germany. The EP-FK270 handles straw baling reliably at the 120 hp level where most mid-size square balers operate, delivering consistent torque transfer even when combine-cut straw creates uneven feed rates through the baler's crop intake and square baler pickup mechanism. Its direct-drive ratio means there is no cumulative slippage effect between bale cycles — each plunger stroke starts from the same baseline drive condition.
Refurbished Baler Fitment
A substantial share of square balers in active service globally are second or third-generation machines that have been overhauled and returned to operation. The EP-FK270's base footprint of 294.0 × 118.8 mm and 4 × Ø17.0 mm mounting bolt pattern match the frame geometry common on mid-size balers from the major manufacturers of the past two decades. For dealers and workshops sourcing a replacement square baler gearbox for refurbishment projects in Canada, Australia, and South Korea, this dimensional compatibility is a straightforward procurement advantage.
Specialty Crop Baling
Hemp stalk, switchgrass, and miscanthus baling for biomass and industrial fiber markets are growing applications for mid-size square balers. These crops vary widely in stem stiffness, moisture content, and bulk density. The EP-FK270's 140 hp peak tolerance and robust ductile iron housing provide the physical resilience to handle these materials without the constant monitoring that an undersized gearbox would demand from the operator. Users considering a square baler gearbox for sale for specialty-crop applications find this model covers the realistic load range of most mid-size baler configurations used in these markets.
Export-Market OEM Supply
Agricultural machinery manufacturers in Brazil, Colombia, and Southeast Asian markets who build mid-size square balers for regional distribution need a new square baler gearbox source with documented quality standards, repeatable dimensional tolerances, and reliable production capacity. The EP-FK270 satisfies these requirements under ISO 9001:2015, making it a practical OEM supply option. Custom shaft dimensions and OEM-neutral packaging are available for branded equipment programs where the original equipment identity needs to be preserved.
Matched System Components — Complete Supply from One Source
Yang square baler gearbox is one component in a chain of matched parts. Sourcing the gearbox, PTO shaft, and baler machine from one manufacturing base ensures dimensional compatibility at every interface and simplifies the technical documentation required for commercial importers and OEM buyers alike.
Aci PTO Baler Segiempat
The EP-FK270's 540 r/min input shaft requires a PTO shaft rated for continuous 120 hp operation with a 140 hp surge capacity. Our aci pto baler persegi lineup covers wide-angle configurations, shear-bolt overload protection, and friction-clutch variants across the full range of tractor hitch heights and PTO flange standards used in USA, Australian, and European markets. Compatibility data confirming yoke cross size, overall length, and torque rating is available for any specific tractor-baler combination.
Square Baler Machines
For buyers evaluating a complete baling system rather than individual components, our full series square baler range — including hammer-claw type machines with 2200 mm picking width — is manufactured to the same engineering standards as the EP-FK270 gearbox. Sourcing the machine and its drivetrain components from one manufacturing origin eliminates interface uncertainty on shaft diameters, yoke sizes, and frame mounting dimensions. This one-stop supply advantage is particularly valued by importers and distributors in the Netherlands, Canada, and South Korea who manage large equipment inventories across multiple end-user accounts.
Trade Terms & Delivery
The following applies to the EP-FK270 square baler gearbox and matched drivetrain products.
| Item | Detail |
|---|---|
| MOQ | High-value drive products evaluated by total order value and configuration. Mixed models — gearboxes, PTO shafts, square baler parts — can be combined to meet approx. USD 1,500 minimum. Single-unit orders accepted at adjusted unit pricing. |
| Lead Time — Standard | Standard gearbox, no customization: 20–45 working days. With simple machining (bore modification, keyway, surface treatment): 15–35 working days. |
| Lead Time — Custom | Non-standard shaft configuration, OEM labeling, or special housing treatment: 45–75 working days. Engineering review required before lead time confirmation. |
| Samples | 1–5 units available for new clients where appropriate. Sample lead time: 7–25 working days (complex pieces assessed individually). |
| Trade Terms | EXW, FOB, CIF, DAP standard. FCA, CFR, CPT, CIP, DDP negotiable. For transmission equipment: FOB / CIF / DAP / EXW recommended. |
| Mixed Orders | Gearboxes, PTO shafts, and square baler parts kits can be consolidated into one shipment to meet the minimum order threshold. |
| Quality Documentation | ISO 9001:2015 certificate, dimensional inspection records, and gear contact pattern report available for commercial orders. No-load run-in test completed prior to shipment. |
About Us — 10+ Years in Agricultural & Industrial Transmission
Mechanical power transmission has been our manufacturing focus for over a decade. Our product range spans agricultural gearboxes, worm gear reducers, planetary gear drives, power take-off shafts, hydraulic cylinders, drive chains, gears, and motors — covering the complete drivetrain needs of agricultural and industrial machinery from a single manufacturing base. Every product, including the full square baler gearbox series, is designed and produced under an ISO 9001:2015 certified quality management system.
Our production capabilities extend to a comprehensive range of gearbox assemblies and mechanical components in ductile iron, cast iron, cast steel, precision cast steel, and cast aluminum. Gears, sprockets, worm gears, pulleys, worms, shafts, and both standard and non-standard mechanical parts are all within our manufacturing scope — giving buyers at every scale a genuine one-stop supply option for complete drivetrain systems rather than a collection of parts from multiple vendors.
We supply distributors, OEM manufacturers, and end-users across North America, Europe, Australia, South Korea, Brazil, and Colombia. Export documentation, customs-ready packaging, and multi-language technical data sheets are available as standard for all commercial shipments.
Bengkel
Soalan Lazim
Editor: PXY
