EP-55 Lawn Mower Gearbox

EP-55 Lawn Mower Gearbox

The EP-55 provides 50 HP capacity in a heavy-duty 1:1.6 ratio configuration with module 6.0 gears. Agricultural contractors and livestock producers rely on this gearbox for sustained high-load mowing across large paddocks, where its oversized seals and deep oil sump ensure all-day productivity without overheating.

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Beschrijving


High-Performance Heavy-Duty Rotary Cutter Gearbox: EP-55 by Ever-power Australia Mower Gearbox Co.,Ltd.

Engineered for sustained heavy use, the EP-55 versnellingsbak van de maaier converts your tractor’s PTO output into efficient cutting force. Rated at 50 HP with gear ratio options of 1:1.6, this unit combines flexibility with the durability that commercial operators demand.

EP-55 Heavy-Duty Rotary Cutter Gearbox

📈 EP-55 Technical Specifications

Parameter Specificatie
Modelnummer EP-55
Versnellingsbaktype Heavy-Duty Rotary Cutter Gearbox
Overbrengingsverhouding(en) 1:1.6
Tandconfiguratie 15/24
Tandwielmodule 6.0
Nominaal vermogen 50 HP
Invoersnelheid 540 toeren per minuut
Invoer-/uitvoeras 1 3/8 Z6, Cone base aequilate spline shaft
Nettogewicht 28.7 Kg
Tandwielmateriaal 20CrMnTi gelegeerd staal, gecarburiseerd en gehard HRC 58-62
Behuizingsmateriaal Grijs gietijzer (HT200/HT250)
Verzegeling Bescherming Meervoudige NBR/FKM-oliekeerringen, IP65+-geclassificeerd
Smering SAE 80W-90 of 85W-140 EP tandwielolie
Oppervlaktebehandeling E-coat primer + polyester poedercoating, rode afwerking

โญ Belangrijkste kenmerken en technische voordelen

⚗

Dual-Lip NBR Oil Seals

Twin-lip nitrile seals with integrated dust excluder on every shaft exit, rated to IP65, preventing moisture and crop debris from entering the gear chamber.

🔒

Optimized Lightweight Geometry

Finite-element-optimized casing walls remove unnecessary material while maintaining full load capacity, reducing installed weight by 15% versus previous-generation housings.

⚡

20CrMnTi Forged Gear Blanks

All gear blanks are closed-die forged (not cast) to align grain flow with tooth roots, increasing bending fatigue strength by 30% over alternative casting methods.

🔄

97%+ Mechanical Efficiency Rating

Super-finished gear flanks (Ra โ‰ค 0.6 ฮผm) and optimized tooth contact deliver over 97% efficiency, reducing fuel consumption and allowing cooler continuous operation.

🔨

Premium Tapered Roller Bearings

All positions fitted with Japanese-standard tapered roller bearings rated for 5,000+ hours L10 life, handling combined radial and thrust loads simultaneously.

🌡

GGG-50 Spheroidal Iron Casing

EN-GJS-500-7 housing tested to 25 bar hydrostatic pressure, providing extreme fatigue strength for applications exceeding 100 HP continuous input power.

Mower gearbox in agricultural use

๐Ÿ”ง Compatibiliteit en kruisverwijzing van apparatuur

🔄 Cross-Reference Compatibility for EP-55

The EP-55 is engineered as a direct replacement or upgrade for gearboxes fitted to equipment from leading manufacturers including:

New Holland • Bush Hog • Kioti • Vicon • Bomford • Valtra • Yanmar • Lovol

Disclaimer: De bovenstaande merknamen worden uitsluitend vermeld ter identificatie van de compatibiliteit. Ever-power Australia Mower Gearbox Co.,Ltd. is niet gelieerd aan, onderschreven door of geautoriseerd door een van de vermelde fabrikanten. Alle handelsmerken behoren toe aan hun respectievelijke eigenaren.

๐Ÿ“š Gids voor het kiezen van een versnellingsbak

Proper gearbox selection protects your investment and maximizes field productivity. Here is how to determine if the EP-55 is right for your operation:

๐Ÿ“Œ Keuze tussen 540 tpm en 1000 tpm aftakas
The EP-55 operates at 540 rpm. Most rotary mowers use 540 RPM PTO. The 1000 RPM standard is for larger implements on high-HP tractors. Never connect a 540 RPM gearbox to a 1000 RPM PTO โ€” the doubled speed will destroy bearings and gears within minutes.
๐Ÿ“Œ Gietijzeren behuizing versus aluminium behuizing
The EP-55 uses a grey cast iron housing. Cast iron excels in vibration damping, impact resistance, and heat dissipation โ€” ideal for rough, rocky mowing conditions. Aluminium is lighter and more corrosion-resistant, better suited to wet environments and weight-sensitive implements.
๐Ÿ“Œ Standaardcatalogus versus specificaties op maat
The EP-55 is available as a standard catalog item shipping in 3-5 days. If your application requires a non-standard ratio, shaft type, or mounting configuration, our engineering team offers custom designs with 4-6 week lead times. Minimum order quantities may apply.
📌 Output Shaft Type Compatibility
The EP-55 features 1 3/8 Z6, Cone base aequilate spline shaft output. Verify your blade hub or implement rotor accepts this shaft type before ordering. We offer multiple output configurations โ€” spline, taper, keyway, and flange โ€” to match virtually any existing installation.
📌 Weight and Mounting Considerations
At 28.7 Kg, the EP-55 is designed for mid-size utility tractor attachments. Confirm your implement frame and three-point hitch can support this weight plus the weight of the blade assembly. Mounting bolt pattern and orientation should match your existing layout.

๐ŸŒพ Typische toepassingsscenario's

🌾 Roadside and highway verge vegetation management

🚘 Pipeline and powerline easement clearing

🌱 Riparian zone and waterway bank vegetation control

⛰ Rotary tiller seedbed preparation for row crops

🌳 Land clearing of light to medium regrowth scrub

Ever-power Australia Mower Gearbox Co.,Ltd. manufacturing facility

๐Ÿ›  Installatie- en configuratiehandleiding

  1. Koppel de aftakas van de tractor los en ondersteun het maaiwerktuig veilig met krikken of blokken voordat u begint met de installatie van de versnellingsbak.
  2. Voor units die meer dan 25 kg wegen, gebruik een kettingtakel, motortakel of een hijsinstallatie met twee personen om de versnellingsbak te positioneren. Probeer nooit zware versnellingsbakken in je eentje te tillen.
  3. Vul de versnellingsbak bij met de aanbevolen versnellingsbakolie (SAE 80W-90 of 85W-140 EP) tot het niveau dat is aangegeven op het kijkglas of de peilstok. Niet te veel bijvullen.
  4. Voordat u op vol vermogen gaat werken, doorloop een geleidelijke inloopperiode: 30 minuten op half gas, vervolgens 30 minuten op driekwart gas, voordat u het volledige aftakastoerental inschakelt.
  5. Controleer met een liniaal of de montageplaat van het werktuig vlak is. Eventuele krommingen van meer dan 0,5 mm moeten worden gecorrigeerd voordat de nieuwe versnellingsbak wordt gemonteerd.
  6. Gebruik Nord-Lock-ringen of schroefdraadborgmiddel op alle bevestigingsbouten om losraken door trillingen tijdens gebruik te voorkomen.
  7. Run the gearbox at no load for 5-10 minutes, then shut down and re-check oil level โ€” new seals and bearings often absorb a small amount of initial oil.

โ“ Veelgestelde vragen

❓ Can this unit directly replace my OEM gearbox?

Yes. Our mounting patterns, shaft diameters, and spline profiles match industry-standard OEM dimensions. We supply detailed technical drawings for cross-referencing. If your existing unit differs slightly, our engineering team can advise on adapters.

❓ What happens if I accidentally run it dry?

Stop the PTO immediately. Even a few minutes without oil causes severe gear scoring and bearing damage, typically requiring a full internal rebuild. Always verify oil level before engaging the PTO.

❓ How should I store the gearbox off-season?

Run briefly to warm the oil, then top up to the full mark. Apply grease to exposed shaft surfaces and seal any open ports. Store in a dry, covered area. Before next season, verify oil level and rotate input by hand to check free movement.

❓ Can I replace just the gear set?

Yes. Replacement gear sets are available for all models and are cost-effective when the housing, bearings, and shafts remain in good condition. We recommend replacing bearings and seals simultaneously for best results.

❓ Can this gearbox handle reverse PTO rotation?

Our spiral bevel designs operate correctly in both rotational directions without modification. However, check your specific implement requirements, as some mower blade assemblies are direction-sensitive.

โญ Klantenrecensies en praktijkverslagen

★★★★★

📍 New South Wales, Australia

Purchased two units for our operation. Consistent quality between both units, which tells me their factory QC is solid. Will buy again.

★★★★★

📍 Adana, Turkey

Replaced a failed OEM unit on a 15-year-old mower. This new gearbox is actually smoother and quieter than the original ever was.

★★★★★

📍 Saskatchewan, Canada

Best aftermarket unit I have used in 20+ years of farming. Bolt holes aligned first try. Oil sight glass is a thoughtful touch.

★★★★☆

📍 Hokkaido, Japan

Precision manufacturing is evident when you look at the gear teeth. Mesh noise is minimal. Very satisfied with this purchase.

★★★★☆

📍 Castilla, Spain

The compact size was critical for our application and this model delivered. Two years running, zero problems whatsoever.

Agricultural gearbox range

⚖ EP-55 vs. Low-Cost Alternatives

Functie EP-55 (Ever-power) Generiek / Goedkoop alternatief
Housing ✔ Ductile Cast Iron or HT250 Grey Iron, 12-14mm Wall ✘ Thin-Wall Recycled Cast Iron, 8mm Wall
Surface Finish ✔ E-Coat Primer + Powder Coat, 80ฮผm Total ✘ Spray Paint, 30-40ฮผm, Chips Within Months
Noise Level ✔ 72-78 dB at 1m, Spiral Bevel Design ✘ 82-88 dB at 1m, Straight Bevel Design
Bearing Installation ✔ Interference Fit via Induction Heating ✘ Press Fit, Risk of Spinning-In-Bore
Bearing Preload ✔ Precision Shimmed, Zero End-Play ✘ No Preload Adjustment, Excessive Play
Gasket System ✔ Fluorocarbon O-Ring, No Re-Torque Needed ✘ Paper Gasket, Requires Annual Re-Torque
Lubrication System ✔ Splash + Directional Baffles, Full Coverage ✘ Basic Splash Only, Uneven Distribution

🔄 Related Products & Accessories

🏆 Certifications & Quality Standards

We maintain rigorous quality standards backed by ISO 9001:2015 certification across our entire production process. Raw materials are verified through spectroscopic analysis with ASTM E415 certificates. Gear tooth geometry on every EP-55 is validated using CNC gear inspection machines calibrated to national metrology standards. Our laboratory performs hardness testing, metallographic examination, and magnetic particle inspection on every batch.

🏭 Why Choose Ever-power Australia Mower Gearbox Co.,Ltd.?

We at Ever-power Australia Mower Gearbox Co.,Ltd. combine deep metallurgical expertise with state-of-the-art manufacturing technology to produce agricultural gearboxes that compete head-to-head with the best European and American brands โ€” at a fraction of the cost. Our 23 CNC machining centres and 9 dedicated gear production lines give us the capacity and flexibility to handle orders from single prototype units to full container-load production runs, all with the same unwavering commitment to dimensional accuracy and material quality.

PTO drive shaft

📞 Get Your EP-55 Quote Today

Looking for a dependable heavy-duty rotary cutter gearbox that pays for itself season after season? Contact us now for a competitive quote on the EP-55 and discover why thousands of farmers trust our gearboxes.

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