Коробка передач прес-підбирача EP-180-700HP

1 · Two Input Speed Configurations — One Gearbox

The EP-FK157 is available in 1:2.46 (540 r/min input) and 1:2.07 (720 r/min input) configurations — both rated at 180 hp nominal and 700 hp peak. This dual-configuration availability means a single part specification covers equipment powered by both standard 540 r/min PTO tractors and 720 r/min input power sources. OEM machine builders targeting multiple export markets — including European machines that historically used 720 r/min PTO standards — can specify one gearbox model for production flexibility without sourcing two separate units, reducing procurement complexity and spare parts inventory requirements for agri supply square baler gearbox buyers globally.

2 · 700 hp Peak — Verified Across Both Ratios

Both gear ratio configurations of the FK157 are certified to 700 hp peak — not just the higher-ratio version. This matters because the peak load event is determined by flywheel inertia, not by the gear ratio: the same kinetic energy discharge occurs regardless of which input speed configuration is installed. A gearbox that certifies peak power only on the lower-ratio version would leave 720 r/min configuration users without a verified safety margin. The FK157 eliminates this ambiguity. Commercial square baler operation and straw chopper operation in USA hay markets, Australian broad-acre regions, and European processing facilities all generate the same type of inertia discharge event — and it is addressed by the same 700 hp peak rating across both configurations.

3 · Gleason Helical Teeth — Proven at Extreme Agricultural Loads

Gleason Helical Teeth provide a contact ratio typically 40–60% higher than equivalent straight bevel tooth forms. At 700 hp peak, multiple tooth pairs simultaneously share the load rather than a single pair carrying the full instantaneous load — a fundamental advantage that allows the FK157's gear set to achieve this power rating within a housing envelope that remains practically installable in a baler or chopper frame. The helical tooth form also reduces transmission error (the source of gear noise), which is a secondary benefit for operators working long continuous shifts on commercial platforms during straw and biomass processing campaigns.

4 · Dual Application Suitability — Baler and Chopper

The technical data explicitly lists suitability for both square balers and straw choppers. These are mechanically distinct applications — a baler's plunger generates cyclic jam events, while a chopper rotor generates high-speed inertia shock when dense straw layers enter the knife zone. The FK157's 700 hp peak rating covers both inertia discharge profiles, making it a valid square baler gearbox for sale specification for equipment dealers and OEM manufacturers who supply both machine types into the same market. This dual suitability reduces the number of gearbox models that a distributor needs to stock to cover both applications, which is a real procurement advantage for operations in the Netherlands, Canada, and South Korea that serve mixed agricultural equipment markets.

5 · Large-Footprint Base for Heavy Frame Mounting

At 450.0 × 205.0 mm base footprint with 400.0 × 160.0 mm bolt pitch and 4 × Ø21.0 mm base bolts, the FK157's mounting interface is proportioned for the structural frames of commercial large-square balers and straw choppers. Wide bolt pitch is particularly important at 700 hp peak: the torsional rocking moment that peak events generate at the housing-to-frame interface scales directly with peak torque, and a narrow mounting base transfers this moment into fastener bending that leads to premature bolt fatigue. The FK157's wide base design distributes this moment over a larger lever arm, keeping fastener loads within acceptable fatigue limits across the full service life of the gearbox — a critical design detail that a new square baler gearbox buyer at this power class should verify on any alternative they evaluate.

Житло

Ductile iron GGG50 / QT500-7 class with integrated structural ribs visible in the engineering drawing. The 570.0 mm overall length and large front-face area impose significant distributed loads on the casting under peak torque in both configurations. Wall thickness and rib placement are calculated to maintain bearing bore concentricity within 0.02 mm under full rated load — the geometric requirement for stable Gleason Helical Teeth mesh throughout the load cycle.

Gear Set — Helical Bevel

20CrMnTi alloy steel, gas-carburized to a case depth calculated for the Hertzian contact stress at 700 hp peak on Gleason Helical Teeth geometry. Surface hardness HRC 58–62 after case hardening and quenching. Tooth flanks finish-ground post-hardening on a 5-axis bevel gear grinding machine. Gear lead and contact pattern measured by CMM and confirmed on a roll-test machine before assembly. Both ratio configurations are built to the same material and process standard.

Input & Output Shafts

42CrMo4 alloy steel, quenched and tempered to 310–350 HB for maximum torsional fatigue resistance across both configurations' torque levels. The 720 r/min input configuration generates higher input shaft torque at the same power level than the 540 r/min version (torque = power / angular velocity): shaft sizing is calculated for the most demanding of the two. Shaft journals machined to h6 tolerance at all bearing seats after heat treatment. Thread forms on preload nuts rolled, not cut, for fatigue performance.

Підшипники

Heavy-duty tapered roller bearings selected for the combined radial and axial loads generated by Gleason Helical Teeth at 700 hp peak in each shaft position. Axial thrust from helical tooth geometry is fully absorbed by the bearing arrangement; preload is set with precision-ground spacers after assembly and confirmed by rolling-torque measurement — not estimated from tables or shim stack approximation. Thermally installed inner rings for controlled interference fit.

Герметизація

FKM (Viton) double-lip seals at both shaft exits — input and output — for thermal and chemical resistance appropriate to sustained 180 hp continuous operation with frequent 700 hp surge events. Inboard labyrinth shields on both shaft positions intercept crop dust and chopper residue before it reaches the primary seal lip. All seal positions include dust lip on the atmospheric side as a secondary barrier.

Quality Certification

ISO 9001:2015 certified manufacturing. Raw material batch-tested for chemistry, microstructure (carburization depth), and hardness. Finished unit: CMM dimensional inspection, gear contact pattern record, thermal run-in at rated speed, oil temperature stabilization measurement, and full documentation package. Test records available to commercial and OEM buyers on request.

Commercial Large-Square Baling — 540 r/min PTO

The 1:2.46 / 540 r/min configuration covers commercial large-square baling directly. At 1328.4 r/min output from standard agricultural PTO, this drives large-square baler crankshafts in the speed range used by high-throughput commercial machines across North American alfalfa, Australian wheat straw, and European hay markets. The 700 hp peak tolerance handles the inertia discharge events that occur when dense windrows create plunger stall conditions — events that occur multiple times per field hour in challenging crop conditions and that determine whether the square baler gearbox survives a full season or fails mid-harvest.

Baling from 720 r/min Input Power Sources

The 1:2.07 / 720 r/min configuration addresses equipment paired with 720 r/min PTO tractors or fixed-speed power units. In UK and northern European markets, older tractors with 720 r/min PTO output remain in active agricultural service — the FK157's second configuration allows these machines to drive large-square balers without an intermediate speed-reduction stage. For industrial baling lines using fixed-speed electric motor drives at speeds near 720 r/min, this configuration likewise provides a direct-fit gearbox without custom speed matching. Square baler operation from 720 r/min input at 700 hp peak is uncommon in the market — the FK157 is one of the few agricultural gearboxes that provides a documented, tested specification for this operating point.

Straw Chopper Drive Applications

Straw choppers use high-speed knife rotors that generate their own inertia shock profile when dense straw layers or foreign objects enter the chopper intake. The FK157's 700 hp peak covers the inertia discharge at the rotor in both configurations. For combine harvester manufacturers integrating straw chopper drives that accept either 540 r/min or 720 r/min PTO inputs across their product range — a common situation in South Korean and European combine harvester markets — the FK157 provides a single gearbox specification that covers both drive standards, reducing the number of drivetrain variants managed across the product line.

Multi-Market OEM Machine Platforms

Agricultural machinery OEMs exporting to multiple regions face the practical challenge that PTO speed standards vary by market and product era. A machine platform that must accept both 540 r/min (international standard) and 720 r/min (older European or certain industrial standard) inputs faces a choice: maintain two drivetrain variants or specify one gearbox model that covers both. The FK157 enables the second option for buyers in Brazil, Colombia, and Canada whose export mix spans both PTO speed standards. ISO 9001:2015 certification, full engineering documentation, and custom shaft geometry availability address the OEM procurement requirements in all three markets.

High-Throughput Biomass and Residue Processing

Biomass energy facilities and agricultural residue management operations increasingly run square balers and straw choppers in continuous or near-continuous processing modes. Both machine types at this operating intensity accumulate fatigue on the gearbox much faster than seasonal field baling. The FK157's 700 hp peak tolerance and FKM seal specification — resistant to the elevated temperatures that continuous high-power operation generates — make it appropriate for these duty cycles. Square baler gearbox parts availability and the ability to source complete kit replacement units from the same supplier are particular advantages for continuous-process facilities in the Netherlands and UK that cannot afford multi-day downtime waiting for freight from multiple sources.

Вал відбору потужності прес-підбирача квадратного типу

Pairing the FK157 with a correctly rated PTO shaft is as important as the gearbox specification itself — an undersized shaft is the most common cause of driveline failure immediately downstream of a high-rated gearbox upgrade. Our вал відбору потужності прес-підбирача квадратного типу range includes heavy-duty wide-angle models with overrunning clutch and friction-clutch overload protection rated for the full FK157 power envelope in both 540 r/min and 720 r/min input configurations. Compatibility data — yoke cross size, spline bore, collapsed and extended length, torque rating — is confirmed for all major tractor PTO standards used globally. Provide your tractor model and hitch height at enquiry for a direct fitment confirmation.

Square Baler Machines

For buyers evaluating a complete square baling system, our square baler lineup — including hammer-claw type machines with 2200 mm picking width — is manufactured to the same ISO 9001:2015 standards as the FK157 gearbox. Sourcing gearbox and machine from one manufacturing origin eliminates all shaft diameter, yoke size, and frame mounting interface uncertainty. This one-stop supply model is particularly valued by importers and agricultural equipment distributors in Canada, South Korea, Brazil, and the Netherlands who need a single technical contact and a single quality system reference across the entire machine drivetrain.