EP-B80 Compacte Balenpers Versnellingsbak — 50 tot 80 kW, Snelheidsverhoger met zij-ingang en directe montage
EP-B80 Compact Baler Gearbox — Product Overview

Compact Direct-Mount — No Tube Required
Not every baler needs a long-tube gearbox. Compact round balers, light-duty straw return machines, and smaller straw choppers position their internal drive hub close to the PTO attachment point — within the reach of a directly mounted gearbox housing. The EP-B80 compact versnellingsbak voor ronde balenpers is engineered for exactly this configuration: a short, rigid unit that bolts directly to the baler’s structural frame with no intermediate tube, no extension shaft, and no separate bearing supports.
Side-Input Power Path
Unlike the top-mounted input on the EP-1800B/EP-2250B family, the EP-B80 accepts PTO power through a side-mounted input shaft. This lateral input orientation aligns naturally with baler frame geometries where the PTO-aandrijfas approaches from the side rather than from above. The side-input configuration also lowers the overall height of the gearbox-plus-baler assembly, reducing the machine’s center of gravity for improved stability during hillside baling operations.
1,153 RPM — Tuned for Light-to-Mid Balers
The EP-B80’s 0.468 : 1 ratio produces 1,153 rpm output — approximately 7% slower than the EP-1800B’s 1,234 rpm. This slightly lower speed is deliberately calibrated for compact balers with smaller pickup reels and chamber rollers that achieve optimal material handling at moderate rotor speeds. The 50–80 KW power rating covers tractors from 68 to 110 HP, matching the compact baler segment where the EP-1800B’s 100 KW ceiling is unnecessary.
Volledige technische specificaties

| Parameter | Specificatie |
|---|---|
| Overbrengingsverhouding | 0.468 : 1 (speed increase) |
| Invoersnelheid | 540 rpm (standard PTO, side-mounted) |
| Uitvoersnelheid | 1,153 rpm |
| Snelheidsvermenigvuldigingsfactor | 2.14× |
| Nominaal vermogen | 50–80 KW (68–110 HP) |
| Uitvoer-spline | 8 × 42 × 48 × 8 |
| Uitgangsflens | Ø190 mm bolt circle, 4-Ø13 |
| Uitgaande as | Ø45 mm / Ø30–Ø26 mm stepped, 14 mm keyway |
| Behuizingsbreedte | 270 mm |
| Woninghoogte | 210–230 mm |
| Total Depth | 460 mm |
| Zijprofiel | 169 × 310 mm (B-B section) |
| Top Section | 145 × 115 mm |
| Tandwielmateriaal | 20CrMnTi-gelegeerd staal, oppervlaktegehard 58–62 HRC |
| Behuizingsmateriaal | HT250 gietijzer, blauw geverfd, CNC-afgewerkt |
| Smering | Gesloten oliebad — SAE 80W-90 GL-5 |
| Sollicitatie | Compact round balers, straw return machines, light straw choppers |
Compact Direct-Mount Architecture — Engineering for Close-Coupled Balers

Why Compact Beats Tube for Short-Frame Machines
The EP-1800B and EP-2250B use 900–1,125 mm tubes to bridge the distance between the PTO input and a remotely positioned drive hub. But in compact balers and light straw return machines, the drive hub sits within 460 mm of the PTO connection — a tube gearbox would be oversized, unnecessarily heavy, and waste mounting space. The EP-B80 addresses this by packaging the same speed-increase function into a rigid, direct-mount housing that bolts to the baler frame without any tube extension.
Dubbele uitgangsinterface
The EP-B80 provides two output connection options from a single unit: an 8×42×48×8 spline for direct spline coupling, and a Ø190 bolt flange (4-Ø13) for flanged connections. This dual-interface design allows baler manufacturers to use one gearbox model across product lines that have different internal drive hub types — simplifying procurement and spare parts inventory. The stepped output shaft (Ø45 to Ø30/Ø26) accommodates bearing seats and coupling elements at different positions along the shaft length.
Blue Housing Identification
Korea Ever-Power uses a color-coding system across its baler gearbox range: the EP-B80 and EP-B100 compact models feature blue-painted housings, distinguishing them visually from the red-painted tillage gearboxes and the unpainted tube-output baler units. This color coding helps dealers, technicians, and end users immediately identify the gearbox type during installation, maintenance, and inventory management without needing to read nameplate data.
EP-B80 vs. EP-1800B — Compact or Tube-Output?
Choosing between the compact EP-B80 and the tube-output EP-1800B depends on your baler’s frame geometry and power requirements:
| Criterium | EP-B80 (Compact) | EP-1800B (Tube Output) |
|---|---|---|
| Mounting Style | Direct-mount, no tube | 900 mm tube output |
| Input Orientation | Side-mounted | Top-mounted |
| Uitvoersnelheid | 1,153 rpm | 1.234 toeren per minuut |
| Vermogensclassificatie | 50–80 KW | 70–100 kW |
| Uitvoerinterface | Dual: spline + flange | Keyed shaft + flange |
| Housing Color | Blauw | Red/unpainted |
| Het beste voor | Compact balers, close-coupled frames | Large-frame balers, long-reach drives |
Belangrijkste afmetingen en montage-interface
460 mm
Total Depth
270 mm
Behuizingsbreedte
230 mm
Woninghoogte
Ø190 mm
Uitgangsflens PCD
| Interface | Dimensie | Notities |
|---|---|---|
| Power input | Side-mounted | 540 rpm PTO, lateral shaft entry |
| Uitvoerspline | 8 × 42 × 48 × 8 | 8 teeth, 42 mm minor, 48 mm major |
| Uitgangsflens | Ø190 mm, 4-Ø13 | Flanged output alternative |
| Uitgaande as | Ø45 / Ø30 / Ø26 mm stepped | With 14 mm keyway, multi-diameter for bearing seats |
| Side profile | 169 × 310 mm | B-B section view |
Toepassingsscenario's in het veld

Compact Round Balers (0.9–1.2 m Bale Diameter)
Korean and Japanese compact round balers producing 0.9–1.2 meter diameter bales use shorter frame designs where the drive hub sits immediately behind the PTO connection point. The EP-B80’s 460 mm depth and side-input configuration mount cleanly in these tight envelopes, providing the 1,153 rpm output that smaller chamber rollers and pickup reels require for efficient straw handling at moderate ground speeds.
Light Straw Return Machines
Straw return machines designed for small-to-mid farms (50–80 HP tractors) use compact frame layouts with the chopping rotor positioned close to the PTO input. The EP-B80’s direct-mount design eliminates the heavy tube assemblies that would be overkill for these lighter machines, reducing overall implement weight and keeping the total cost within reach of small farm operators.
Multi-Brand OEM Platform
The EP-B80’s dual output interface (spline plus flange) makes it a versatile platform for OEM baler manufacturers who produce multiple models with different internal drive coupling types. One gearbox SKU covers both spline-coupled and flange-coupled designs, simplifying production procurement and reducing the number of distinct part numbers carried in the assembly warehouse.
Why Choose the EP-B80
Compact Direct-Mount
No tube, no extension shaft, no separate bearing supports. The EP-B80 bolts directly to the baler frame in a rigid, vibration-free assembly. Lighter, simpler, and more cost-effective than tube-output models for close-coupled applications.
Dubbele uitgangsinterface
Both 8×42×48×8 spline and Ø190 bolt flange outputs in one unit. One gearbox SKU covers spline-coupled and flange-coupled baler designs — simplifying OEM procurement and dealer inventory.
Side-Input Low Profile
Lateral PTO input lowers the overall machine height, improving stability during hillside operation. The side-input also aligns naturally with baler frame geometries that route the PTO shaft horizontally.
Blue Visual Identification
The distinctive blue housing color instantly identifies this as a baler speed increaser gearbox. No need to read nameplates during fast-paced field service, inventory management, or dealer shelf identification.
Installatie en onderhoud

Montageprocedure
❶ Position the EP-B80 on the baler frame with the side-input boss aligned to the PTO drive shaft approach angle. Secure the housing using the frame mounting bolts; torque in a star pattern.
❷ Connect the output to the baler’s internal drive hub using either the 8×42×48×8 spline or the Ø190 bolt flange, depending on your baler’s coupling type.
❸ Connect the PTO drive shaft to the side-mounted input. Ensure the shaft angle does not exceed the universal joint’s rated operating angle. Install the safety guard.
❹ Fill gear oil (SAE 80W-90 GL-5) and run a 5-minute idle test. Verify smooth 1,153 rpm output rotation, zero leaks, and no abnormal noise before field engagement.
Onderhoudsschema
◆ Voor elke balenperssessie — Check oil level; inspect output spline/flange and input shaft seal.
◆ Na de eerste 100 uur — Eerste olieverversing: aftappen, doorspoelen, bijvullen.
◆ Elke 400 uur — Olie verversen (thermisch interval bij hoge toerentallen).
◆ Elke 800 uur — Inspect output bearing play; check spline and keyway for wear.
◆ Einde van het stroseizoen — Top off oil; apply corrosion inhibitor to exposed shaft surfaces; store with PTO disconnected.
Aanvullende producten en aandrijflijncomponenten

PTO-aandrijfassen
The EP-B80’s side-input configuration requires a PTO drive shaft with the correct angular approach. Korea Ever-Power supplies matched cardan shafts with wide-angle CV joints rated for the lateral entry geometry typical of compact baler installations.
Aandrijfbakken voor grondbewerking buiten het seizoen
Tractors running the EP-B80 for autumn straw baling typically mount a versnellingsbak van een roterende cultivator for spring and summer tillage. Korea Ever-Power manufactures the complete range of tillage intermediate gearboxes from 40 to 150 KW, keeping your tractor productive year-round across all seasons.
Veelgestelde vragen
Klantenrecensies en praktijkverslagen
★★★★★
“We build compact round balers for the Korean small-farm market. The EP-B80’s direct-mount design saves us both weight and assembly time compared to the tube-output models we previously used. The dual output interface is a real advantage — one gearbox covers both our spline-coupled and flange-coupled baler models. CNC quality is consistently excellent across every delivery.”
OEM Buyer · 60 units/year · Compact baler manufacturing
★★★★★
“I bale rice straw on 5 hectares with a 75 HP Kukje tractor and a compact Korean baler. The EP-B80 replaced the worn-out original gearbox and bolted right on. The blue housing makes it easy to identify on the baler — my mechanic appreciated that during the pre-season inspection. Quiet operation and no oil leaks after two baling seasons.”
Verified Purchase · 75 HP Kukje · Small-farm rice straw baling
★★★★☆
“We distribute the EP-B80 as a replacement gearbox for compact balers across Thailand. The blue housing color helps our customers distinguish it from tillage gearboxes immediately. Good quality and pricing. Only 4 stars because the side-input orientation does not match one older Thai baler model that requires top-input — but for all other models, the fit is perfect.”
Wholesale Buyer · 30+ units/year · Thai aftermarket distribution
★★★★★
“Our cooperative operates 12 compact balers for livestock bedding straw. We standardized on the EP-B80 across all machines — the direct-mount design is simpler to maintain than our previous tube-output gearboxes, and the 1,153 rpm output is actually better matched to our balers than the faster 1,234 rpm units we tried before. Less vibration, more consistent bale density.”
Group Purchase · 12 units · Livestock bedding cooperative
★★★★★
“We use the EP-B80 on light straw return machines processing rice straw in the Mekong Delta. The compact size and direct-mount design are ideal for our smaller implements. The 50–80 KW rating matches our 70–90 HP tractor fleet perfectly. After 500+ hours of operation in humid tropical conditions, the blue housing finish shows no corrosion and the seals are holding well.”
Verified Purchase · 3 units · Straw return processing
Extra informatie
| Editor | Cxm |
|---|





