EP-1800B Balenpers-snelheidsverhoger met tandwielkast — 70 tot 100 kW, buisuitvoer 900 mm

EP-1800B Baler Speed Increaser Gearbox — Product Overview

Why Balers Need Speed Increase, Not Reduction

Unlike tillage gearboxes that slow the PTO output for soil-working implements, versnellingsbak voor ronde balenpers assemblies must increase rotor speed dramatically. Baler pickup reels, wrapping mechanisms, and net-binding systems operate most efficiently at speeds far above the 540 rpm PTO standard. The EP-1800B’s 0.4375 : 1 ratio boosts PTO speed by 2.29×, delivering 1,234 rpm to the baler’s main drive shaft — the speed that Korean and Asian round balers are designed to operate at for consistent bale density and clean straw pickup.

Integrated 900 mm Tube Output

The EP-1800B features a 900 mm steel tube that houses the output shaft and extends from the gearbox body to the baler’s main rotor input. This tube serves dual purposes: it transmits rotational power at 1,234 rpm through the internal shaft, and it acts as a structural backbone that ties the gearbox housing to the baler frame. By integrating the output shaft and structural tube into a single assembly, the EP-1800B eliminates the separate intermediate shaft, support bearings, and universal joints that older baler driveline designs required.

Power Rating & Input Interface

Rated at 70–100 KW (95–135 HP), the EP-1800B handles the power demands of modern round balers processing rice straw, wheat straw, and corn stalks at field speeds of 6–10 km/h. The input side uses an 8×42×48×8 spline connection — the same profile found on many Korean intermediate gearboxes — ensuring compatibility with standard PTO-aandrijfas assemblies already in use on most Korean farm tractors.

Volledige technische specificaties

All specifications verified against the Korea Ever-Power engineering drawing for the EP-1800B (catalog reference P08). Dimensional values measured at 20°C ambient, no-load condition.

Baler Speed-Increase Engineering — Why 1,234 RPM

Round balers and straw return machines use multiple high-speed rotating components that must operate well above PTO speed for proper function. Understanding why each subsystem needs 1,200+ rpm output explains the engineering rationale behind the EP-1800B’s 0.4375 : 1 ratio:

900 mm Tube Output — Structural Integration with the Baler Frame

Dual-Function Tube Design

The EP-1800B’s 900 mm output tube is not simply a protective cover for the internal shaft — it serves as a load-bearing structural member that ties the gearbox housing to the baler’s main frame. The tube’s 160 × 76 mm cross-section provides the bending stiffness needed to resist the vertical loads generated during baler operation: the weight of the bale chamber, the dynamic forces of straw feeding, and the transport loads during field-to-farm travel over rough terrain.

High-RPM Shaft Engineering

The internal output shaft rotates at 1,234 rpm inside the tube — more than double the speed of tillage gearbox outputs. At this speed, shaft dynamics become critical: any imbalance, misalignment, or bearing degradation produces vibration that accelerates wear throughout the entire baler driveline. Korea Ever-Power precision-balances the output shaft assembly and uses high-speed-rated bearings with tighter radial clearance specifications than standard agricultural bearings. The shaft runs on support bearings at both the gearbox end and the output flange end of the tube, maintaining concentricity over the full 900 mm span.

Output Flange & Keyed Shaft Connection

The distal end of the tube terminates in a combined flange-and-shaft output: a Ø220 mm flange (4-Ø13 bolts on Ø190 PCD) provides rigid frame mounting, while the Ø50 mm keyed shaft (14 × 70 mm keyway) transmits rotational power to the baler’s internal drive mechanism. This combined interface allows the baler frame to be structurally connected to the gearbox tube while independently accepting rotational drive — separating structural loads from drivetrain torque for cleaner force paths and longer component life.

Belangrijkste afmetingen en montage-interface

Toepassingsscenario's in het veld

Rice Straw Baling in Korean Paddies

Korean rice farms generate massive volumes of straw after harvest each autumn. Round balers equipped with the EP-1800B process this straw into dense, transportable bales at field speeds of 6–10 km/h. The 1,234 rpm output provides the pickup reel and chamber roller speeds needed for clean straw gathering even in damp conditions, while the 70–100 KW power rating handles the sustained load of compressing wet straw into tight bales without overloading the tractor PTO.

Straw Return & Incorporation Machines

Modern straw return machines chop rice or corn straw into fine particles and incorporate them back into the soil as organic matter. These machines use high-speed rotors operating at 1,000–1,300 rpm to achieve sufficiently fine particle size for rapid decomposition. The EP-1800B’s 1,234 rpm output drives these rotors directly, and the 900 mm tube output bridges the distance between the tractor PTO connection point and the rotor assembly positioned at the rear of the machine frame.

Corn Stover & Wheat Straw Processing

Beyond rice straw, the EP-1800B powers balers processing corn stover and wheat straw across multi-crop Korean farms and export markets in Southeast Asia. The 100 KW power ceiling accommodates the higher energy demand of processing thicker, more fibrous corn stalks that require greater compression force than rice straw. The robust 8×42×48×8 input spline handles the sustained torque loads generated during heavy stover baling at full ground speed.

Baler Driveline Integration — Where the EP-1800B Fits

Power Path: Tractor to Bale

In a typical Korean round baler installation, the power path runs: tractor PTO (540 rpm) → PTO drive shaft → EP-1800B input spline → spiral bevel gear set (0.4375 : 1 speed increase) → 900 mm tube output shaft (1,234 rpm) → output flange/keyed shaft → baler internal chain drive → pickup reel, chamber rollers, and binding mechanism. The EP-1800B occupies the critical speed-conversion position in this chain, and its reliability directly determines the baler’s uptime during the narrow straw-season harvest window.

Structural Integration

The EP-1800B’s gearbox housing mounts to the baler’s front crossmember, and the 900 mm tube extends rearward to the baler’s main structural beam. This arrangement creates a rigid triangulated connection between the PTO attachment point and the baler frame, reducing frame flex during operation and transport. For baler OEMs designing new machines, the EP-1800B simplifies the frame layout by eliminating separate gearbox mounting brackets and intermediate bearing supports.

Compatibility with Existing Baler Models

The EP-1800B’s output dimensions (Ø50 mm keyed shaft, Ø220 mm flange, 4-Ø13 bolts on Ø190) are designed to match common Korean and Asian baler input interfaces. Before ordering as a replacement or upgrade, verify your baler’s existing gearbox tube length (900 mm for the EP-1800B), output shaft diameter, and flange bolt pattern. For balers requiring a longer tube, see the EP-2250B (1,125 mm tube) in the Korea Ever-Power round baler gearbox range.

Why Choose the EP-1800B for Your Baler

Installatie en onderhoud

Montageprocedure

❶ Mount the EP-1800B gearbox housing to the baler’s front crossmember. Ensure the tube is supported by the baler frame’s guide brackets at intervals not exceeding 300 mm along its 900 mm length.

❷ Connect the output flange (4-Ø13 on Ø190) and keyed shaft (Ø50, 14×70 keyway) to the baler’s internal drive input. Torque flange bolts to specification.

❸ Connect the PTO drive shaft to the 8×42×48×8 input spline. Verify full engagement and install the safety guard.

❹ Fill gear oil (SAE 80W-90 GL-5) through the top breather valve. Run a 5-minute idle test, then verify at full 540 rpm — confirming smooth 1,234 rpm output rotation, zero leaks, and no abnormal noise.

Onderhoudsschema

◆ Voor elke balenperssessie — Check oil level; inspect output shaft keyway and flange bolts; verify tube support brackets are secure.

◆ Na de eerste 100 uur — Eerste olieverversing: aftappen, doorspoelen en bijvullen met verse SAE 80W-90 GL-5.

◆ Elke 400 uur — Oil change (shorter interval than reducer gearboxes due to high-RPM thermal load).

◆ Elke 800 uur — Inspect output shaft bearing play; check keyway for deformation; examine input spline condition.

◆ Einde van het stroseizoen — Top off gear oil, apply corrosion inhibitor to exposed shaft surfaces, and store the baler with the PTO disconnected.

Aanvullende producten en aandrijflijncomponenten

PTO-aandrijfassen

Korea Ever-Power supplies heavy-duty cardan shafts rated for the EP-1800B’s 70–100 KW input torque. The 8×42×48×8 spline interface matches standard Korean PTO shaft profiles. Properly matched shaft length and safety guard coverage are essential — baler PTO shafts experience higher angular variation than tillage shafts due to the baler’s swinging drawbar geometry.

Aandrijfbakken voor grondbewerking buiten het seizoen

Tractors running the EP-1800B for autumn straw baling typically mount a versnellingsbak van een roterende cultivator for spring and summer tillage work. Korea Ever-Power manufactures the complete range of tillage intermediate gearboxes from 40 to 150 KW, ensuring your tractor is productively equipped year-round.

Veelgestelde vragen

Klantenrecensies en praktijkverslagen