EP-2350A Gearbox Pengatur Kecepatan — 60 KW, Reduksi Dalam Rasio Ganda dengan Output Tabung yang Diperpanjang

EP-2350A Adjustable Speed Gearbox — Product Overview

Two Speeds, One Gearbox — Field-Adjustable Output

The EP-2350A adjustable speed gearbox provides what single-ratio gearboxes cannot: the ability to switch between two precisely calibrated output speeds without disassembling the housing or swapping gear pairs. The 2.23 : 1 ratio delivers 242 rpm for maximum torque in heavy soil conditions, while the 1.97 : 1 ratio provides 274 rpm for faster processing in lighter soil. This dual-ratio capability makes the EP-2350A the ideal gearbox kultivator putar for farms that work across varying terrain and soil types throughout the growing season.

Extended Tube Output — 1,165.5 mm Reach

Unlike compact intermediate gearboxes that mount directly at the implement’s input point, the EP-2350A features an extended tube output measuring 1,165.5 mm from the gearbox housing to the output flange. This extended reach allows the gearbox body to remain mounted at the tractor’s three-point hitch or at the center of a wide implement frame, while the output flange connects to working elements positioned deep inside the implement structure — reaching rotor assemblies, side-mounted beater heads, or offset cultivation units that cannot be driven by a standard short-body gearbox.

Deep Reduction for High-Torque Applications

Both ratios (2.23 and 1.97) deliver significantly more torque multiplication than standard 1.5 : 1 tiller gearboxes. The 2.23 : 1 setting multiplies input torque by 2.23×, making it suitable for heavy clay, waterlogged paddy soil, and deep soil incorporation tasks. The lower 1.97 : 1 ratio still provides nearly twice the torque of direct PTO drive while allowing slightly higher rotor speed for medium-weight soils and straw-rich fields. Rated at 60 KW with a 6×29×35×8.5 involute spline input, the EP-2350A handles tractors in the 55–80 HP class.

Full Technical Specifications — Both Ratio Settings

Adjustable Speed Benefits — Why Two Switchable Ratios Matter

The EP-2350A offers a practical middle ground between fixed-ratio gearboxes (one speed, no flexibility) and multi-ratio units like the Gearbox perantara multi-rasio EP-225 (five speeds, higher cost). Two carefully chosen ratios cover the speed range most Korean and Asian farmers actually use in the field:

Extended Tube Output — Engineering for Long-Reach Implements

Why 1,165.5 mm of Output Reach

Many cultivation implements — particularly wide beaters, offset rotary tillers, and long-frame incorporation units — position their rotor assembly far from the PTO connection point. A standard short-body gearbox would require an additional intermediate shaft, universal joints, and support bearings to bridge this distance. The EP-2350A eliminates all of these components by integrating the output shaft inside a rigid steel tube that spans the full 1,165.5 mm between the gearbox housing and the implement rotor input. One gearbox, one tube, one flange connection — no intermediate drivetrain components to maintain, align, or replace.

Torsional Rigidity of the Ø76 mm Tube

The output tube uses a Ø76 mm steel profile that provides the torsional stiffness required to transmit 60 KW at 242–274 rpm over the full 1,165.5 mm length without objectionable twist deflection. At rated torque, the tube’s angular deflection remains below 0.5 degrees per meter — well within the tolerance that standard implement rotor bearings can accommodate without premature wear. The tube also serves as a structural member, adding rigidity to the implement frame and reducing the number of separate support brackets required in the overall machine design.

Output Flange Specification

The distal end of the tube terminates in a flanged output with 6-Ø13 bolt holes on Ø154 / Ø131.5 PCD. This flange connects directly to the implement rotor’s input hub, providing a positive, backlash-free drive connection with no intermediate coupling. The 6×29×35×8.5 involute spline input at the gearbox end provides the same centering precision and load distribution as other Korea Ever-Power involute-spline gearboxes.

Dimensi Utama & Antarmuka Pemasangan

Skenario Aplikasi Lapangan

Wide-Frame Beater Implements

Wide beater machines used for rice straw and corn stubble incorporation in Korean paddy agriculture position their rotor assemblies deep inside a long implement frame. The EP-2350A’s 1,165.5 mm tube reaches the rotor input without requiring an additional intermediate shaft or cardan joint assembly. The 242 rpm heavy-duty mode provides the torque margin needed for processing heavy, wet straw-and-soil mixtures during spring preparation.

Offset Rotary Tillers

Offset-mounted rotary tillers are used for working under orchard trees, along vineyard rows, and alongside greenhouse walls where the tractor cannot pass directly over the working zone. The offset mounting geometry places the rotor far from the tractor’s PTO axis, and the EP-2350A’s extended tube bridges this distance cleanly. The adjustable speed allows the operator to match rotor speed to the variable soil conditions encountered in tree-crop row middles versus headland turns.

Straw Return & Residue Incorporation Equipment

Straw-return implements that chop and incorporate crop residue simultaneously use long-frame designs with the chopping rotor forward and the incorporation tines behind. The EP-2350A can drive either element depending on the implement’s design, and the two-speed capability lets the operator optimize chopping intensity: 242 rpm for thorough processing of thick straw mats, 274 rpm for faster passes on thinner residue layers.

Why Choose the EP-2350A

Instalasi & Pengoperasian

Prosedur Pemasangan

❶ Secure the EP-2350A gearbox housing to the implement frame using the housing mounting points. Ensure the Ø76 mm output tube is properly supported along its length by the implement’s tube guide brackets at intervals not exceeding 400 mm.

❷ Connect the output flange (6-Ø13 bolts on Ø154 / Ø131.5 PCD) to the implement rotor input hub. Torque to specification in a star pattern.

❸ Hubungkan Poros penggerak PTO to the 6×29×35×8.5 involute spline input. Verify full engagement depth and install the shaft safety guard.

❹ Set the desired ratio (2.23 or 1.97) using the ratio selection mechanism. Verify the selector is fully engaged and locked before operation.

❺ Fill gear oil (SAE 80W-90 GL-5) and run a 5-minute idle test at low PTO speed. Verify no abnormal noise, no oil leakage along the tube length, and smooth output rotation before engaging full field load.

Jadwal Pemeliharaan

◆ Sebelum setiap sesi kerja — Check oil level; inspect tube guide brackets and output flange bolts.

◆ Setelah 100 jam pertama — Penggantian oli pertama: kuras, bilas, isi ulang dengan oli SAE 80W-90 GL-5 yang baru.

◆ Setiap 500 jam / tahunan — Full oil change; inspect magnetic drain plug; verify ratio selector engagement.

◆ Setiap 1.000 jam — Inspect involute spline for wear; check output tube straightness; examine output flange for bolt hole elongation.

◆ Iklim dingin (di bawah −20°C) — Beralihlah ke oli sintetis penuh SAE 75W-90 GL-5.

Produk Pelengkap & Komponen Penggerak

Poros Penggerak PTO

Korea Ever-Power supplies matched cardan shafts pre-configured for the 6×29×35×8.5 involute spline input. Because the EP-2350A is a deep-reduction gearbox (2.23 : 1 maximum), the input sees the full PTO torque at 540 rpm — the drive shaft must be rated accordingly for continuous 60 KW transmission.

Kombinasi Peralatan Musiman

Farms using the EP-2350A for spring and autumn cultivation work often run a gearbox mesin pengepak jerami bundar during straw baling season. Korea Ever-Power manufactures the complete range of intermediate, speed-increaser, and rear-drive gearboxes to cover every seasonal implement change across the farming calendar.

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