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EP-RC-71 Tandwielkast voor roterende maaier | Directe vervanging voor Omni RC-71

 

When you step up from cutting grass to clearing land, standard gearboxes fail. The heat generated by cutting 2-inch saplings and thick brush destroys seals, and the shock loads fracture standard grey iron housings. The EP-RC-71 is built for the operator who cannot afford downtime.

De EP-RC-71 Tandwielkast voor roterende snijder is Ever-Power’s heavy-duty solution for the 75-100 HP tractor class. It serves as a direct drop-in replacement for the industry-standard Omni Code RC-71, widely used in commercial mowing, roadside maintenance, and heavy agricultural clearing.

The Brazilian Engineering Advantage

In Brazil, agriculture operates at a scale and intensity unmatched by most of the world. Our equipment must endure:

• Heat: Ambient temperatures often exceed 40°C.

• Density: Tropical grasses like Brachiaria are incredibly dense and fibrous.

• Invloed: Hidden termite mounds and hardwood stumps are common hazards.

Ever-Power has engineered the EP-RC-71 to thrive in these conditions. Wij gebruiken QT450 Nodulair gietijzer for the housing, which offers double the tensile strength of standard cast iron. Wij gebruiken Triple-Lip Spring Loaded Seals to keep the oil in and the dust out, ensuring longevity even in the driest, dustiest seasons. Whether you are clearing right-of-ways in Texas or managing sugar cane stubble in São Paulo, this gearbox is the heavy-duty upgrade your machine needs.

Technische specificaties (technische gegevens)

Om er zeker van te zijn dat dit apparaat geschikt is voor uw machine, verzoeken wij u de onderstaande gedetailleerde technische specificaties te raadplegen.

General Engineering Parameters

Parameter	Specificatie	Technische toelichting
Model	EP-RC-71	Replaces Omni RC-71
Vermogen in pk's	75 HP (Continuous) – 100 HP (Peak)	Getest bij 540 RPM ingang
Koppelcapaciteit	1,093 Nm (9,683 lb-in)	Heavy Shock Load Resistance
Invoersnelheid	540 toeren per minuut	Standaard aftakassnelheid voor landbouwvoertuigen
Overbrengingsverhouding	1:1.46 (Standard)	Other ratios (1:1.21, 1:1.93) available
Ingaande as	1-3/8″ – 6 Spline	Standaard SAE-afmetingen
Uitgaande as	1.97″ or 2″ – 15 Tapered Spline	Heavy Duty Spline Count
Behuizingsmateriaal	Nodulair gietijzer (QT450)	High Impact Resistance
Oliecapaciteit	1.04 L (35 oz)	Wordt droog verzonden – moet nog gevuld worden!
Gewicht	37.7 kg (83 lbs)	Droog gewicht
Montagepatroon	4-Bolt (Standard Heavy Duty)	Fits most 6ft-10ft decks
Rotatie	CCW-ingang / CW-uitgang	Standaard landbouwrichting

Internal Component Standards

• Tandwielen: Precisiegesmede spiraalvormige kegeltandwielen. Materiaal: 20CrMnTiWarmtebehandeling: Carboneren (HRC 58-62).

• Lagers: Heavy-duty Kegellagers on ALL shafts (Input & Output) to handle high side loads from PTO shafts and blade impact.

• Zegels: Triple-lip spring-loaded seals. Materiaal: Viton (High Temp) on Input, NBR on Output with debris shield.

• Smering: Deep sump design with specialized oil channels to ensure bearing lubrication on side-hill operations.

5 Key Facts: Why The EP-RC-71 Is The Industry Standard

1. Massive Torque Capacity: Rated for up to 1,093 Nm (9,683 lb-in) of torque, this gearbox is built to shred saplings and dense undergrowth without hesitation.

2. Forged Metallurgy: Wij maken gebruik van 20CrMnTi gelegeerd staal for our gears, carburized to HRC 58-62. This provides a hard, wear-resistant surface and a tough core to absorb shock loads from rock strikes.

3. Advanced Thermal Management: The housing features an expanded oil reservoir (1.04 L) and external cooling ribs to dissipate heat during long shifts in tropical climates.

4. Tapered Roller Architecture: Unlike lighter boxes that use ball bearings, the EP-RC-71 uses Kegellagers on all shafts to handle the massive axial and radial loads generated by heavy stump jumper pans.

5. Safety Integrated: Designed with a standard 1-3/8″ 6-spline input and fully compatible with shear bolt or slip clutch protected PTO shafts.

Compatibiliteits- en uitwisselbaarheidsgids

The EP-RC-71 is designed as a universal vervangende versnellingsbak. Its mounting pattern and shaft dimensions follow industry standards, making it a “Plug & Play” solution for a vast array of medium-to-heavy duty cutters.

Directe vervanging voor:

• Omni Gear: RC-71 (The primary design reference)

• Omni Gear: RC-61 (EP-RC-71 is a heavy-duty upgrade with similar mount – check clearance)

• Rotary Corp: 10671

• Bondioli & Pavesi: Series 4000 (Medium-Heavy Duty)

• Comer: L-50 Series (Verify mount)

Compatibele merken apparatuur (geschikt voor aftermarket-gebruik):

• Bosvarken: 296, 297, 3008 Series (Verify spline count).

• Trots op het land: RCR3596, RCR3610 series.

• Rhino Ag: TS12, SE10, 184 series.

• Woods: BB720, BB840 (Verify input shaft type).

• Schulte: XH1500 (Center and Wing boxes – check ratio).

• Tatu Marchesan: Heavy-duty rotary cutters (Brazil).

Technische tip: The EP-RC-71 is significantly heavier and more robust than the RC-30 or RC-40 series. Do not attempt to mount this gearbox on a light-duty 4ft or 5ft cutter deck without reinforcing the mounting surface. The torque generated can rip the sheet metal of a light-duty deck. Always verify your Aantal spiebanen op de uitgaande as (usually 15 tapered) before ordering.

Gedetailleerde toepassingsscenario's

The EP-RC-71 is built for professional use. Here is where it excels:

🌽 Commercial Crop Residue Management

For farmers managing hundreds of acres of corn or cotton, the EP-RC-71 provides the durability needed for continuous shredding. Its high torque capacity handles the dense, fibrous stalks of Bt corn without overheating, aiding in faster field breakdown for no-till planting. The high gear ratio (1:1.46) ensures high blade tip speeds to pulverize material.

🚧 Right-of-Way & Highway Maintenance

Roadside mowing is brutal. Hidden tires, steel posts, and rocks are common. The EP-RC-71’s Nodulair ijzer housing and forged gears are specifically selected to survive these high-impact events that would shatter a standard grey iron box. The triple-lip seals keep out the road grime and abrasive dust churned up during operation.

🌿 Heavy Brush & Forestry Reclamation

Reclaiming overgrown pastures requires cutting saplings up to 3 inches in diameter. The EP-RC-71’s massive output shaft and tapered roller bearings absorb the violent shock loads generated when the blades impact thick wood, protecting the tractor PTO and preventing gearbox failure.

🏗️ Industrial Site Maintenance

From maintaining pipeline right-of-ways to clearing construction sites, the EP-RC-71 offers the reliability needed by contractors who cannot afford downtime. Its robust design minimizes maintenance intervals, keeping crews working.

Engineering Deep Dive: The Ever-Power Difference

What makes an Ever-Power gearbox different from a generic import? It’s in the details.

Metallurgy: Ductile Iron Revolution

We cast our housings from QT450-10 Nodulair gietijzer. Unlike brittle Grey Iron, Ductile Iron has a nodular graphite structure that allows the metal to deform slightly under extreme stress rather than cracking. This “elasticity” is the difference between a gearbox that survives a rock strike and one that splits open.

Bearing Architecture: Tapered for Toughness

Many competitors use ball bearings on the input shaft to save cost. The EP-RC-71 uses Kegellagers exclusively.

• Why? Ball bearings are good for radial load but poor for axial (thrust) load. Bevel gears generate massive thrust forces trying to push the gears apart. Tapered bearings handle these forces effortlessly, maintaining precise gear mesh and preventing premature tooth wear.

Thermal Management

Heat kills oil. The EP-RC-71 features a larger oil capacity (35 oz / 1.04 L) and a housing design with external ribbing to increase surface area for cooling. This keeps oil temperatures lower during continuous operation in hot climates like Brazil or Texas, preventing seal hardening and oil breakdown.

Klantcases: bewezen in de praktijk

Bij Ever-Power baseren we onze reputatie op resultaten. Zo doen we dat: EP-RC-71 heeft problemen voor onze klanten opgelost.

🇧🇷 Case Study 1: Land Clearing in Pará, Brazil

Klantprofiel: A land development company clearing secondary growth forest.

Apparatuur: 7ft Heavy Duty Rotary Cutter.

• De uitdaging: The client was clearing land with dense saplings and hidden hardwood stumps. Their previous gearboxes were suffering from case fractures En sheared output shafts due to the violent impacts.

• De oplossing: Ze zijn overgestapt op de Ever-Power EP-RC-71. The ductile iron housing and the oversized 2-inch output shaft were key selling points.

• Het resultaat: The client reported a dramatic reduction in catastrophic failures. The EP-RC-71 absorbed the shock loads that destroyed the previous units. They have since standardized their entire fleet on Ever-Power gearboxes.

  “In the Amazon, you can’t run to the store for parts. We need gearboxes that don’t break. Ever-Power delivered.” — Joao S., Site Foreman

🇺🇸 Case Study 2: Municipal Mowing in Oklahoma

Klantprofiel: A county maintenance department managing rural roads.

Apparatuur: Fleet of 15ft Batwing Mowers (Side Wing Boxes).

• De uitdaging: The county was spending over budget on OEM replacement gearboxes for their aging mower fleet. They needed a cost-effective solution that didn’t compromise on quality.

• De oplossing: They sourced the EP-RC-71 as a direct replacement for the wing gearboxes on their cutters.

• Het resultaat: The county saved 35% on parts costs compared to the dealership price. The mechanics noted that the Ever-Power boxes ran cooler and had better seals than the original units, significantly extending the maintenance intervals.

Uitgebreide installatie- en onderhoudshandleiding

A gearbox is only as good as its maintenance. Follow this engineer-approved guide to get the most out of your EP-RC-71.

Stapsgewijze installatie

1. Veiligheid voorop: Schakel de aftakas uit, zet de tractor uit, verwijder de sleutels en blokkeer het maaidek stevig.

2. Verwijdering: Remove the PTO shaft. Remove the castle nut (requires large socket, usually 1-1/2″ or larger) and cotter pin. Use a heavy-duty hub puller to remove the blade pan. Unbolt the 4 mounting bolts.

3. Deck Inspection: CRITICAL: Check the deck for flatness. A warped deck will twist the gearbox housing and cause bearing failure. Reinforce or flatten if necessary.

4. Montage: Install the EP-RC-71 using Grade 8 bolts (5/8″ or 3/4″). Torque to 180 ft-lbs.

5. Hub-installatie: Apply anti-seize to the 15-spline output shaft. Slide the hub on. Install the washer and castle nut. Torque massively (often 300+ ft-lbs) and Installeer een NIEUWE splitpen..

6. Olie bijvullen: Verwijder de bovenste ontluchtingsplug en de zijdelingse niveaucontroleplug. Giet erin. SAE 85W-140 tandwielolie (approx 35 oz / 1.04L) for heavy-duty use. Fill until it weeps out the side hole.

7. PTO-aansluiting: Connect the PTO shaft. Ensure the slip clutch is properly adjusted (loosened and slipped, then retightened) if the cutter has sat for a season.

Smeer- en onderhoudsschema

• Inbraak: Change oil after first 50 uur. This is vital to flush out manufacturing residues and break-in metal.

• Routine: Controleer het oliepeil elke 8 uur (daily). Clean breather plug to prevent pressure buildup.

• Jaarlijks: Drain and replace gear oil. Wij bevelen aan Synthetische 75W-90 of 85W-140 for heavy-duty cycles.

• Grease: If your unit has a grease zerk on the input cap, give it 1-2 pumps every 8 hours. Do not over-grease, or you will push the seal out.

Problemen oplossen die vaak voorkomen

Symptoom	Mogelijke oorzaak	Oplossing
Leaking Input Seal	Clogged breather / Overfilled oil	Clean breather plug. Check oil level.
Excessive Vibration	Loose blade pan / Bent blade	Retorque hub nut. Balance or replace blades.
Oververhitting	Low oil / Wrong viscosity	Top up. Switch to Synthetic oil for high-temp use.
Grinding Noise	Bearing failure / No backlash	Stop immediately. Inspect bearings and gear mesh.

Agricultural PTO Shafts: The Power Link

The EP-RC-71 demands a robust PTO shaft to transmit its 100HP potential. Using an undersized shaft is dangerous.

Choosing the Right Shaft for EP-RC-71

• Serie: Wij bevelen een aan Series 6 or Series 8 PTO Shaft. A Series 4 shaft is too weak for the torque this gearbox can handle.

• Protection:

  • Slipkoppeling: Highly recommended for this horsepower class. It absorbs the inertia of the heavy blade pan when disengaging and protects against shock loads from stumps.

  • Afschuifbout: Acceptable for lighter work, but ensure you use the correct Grade (usually Grade 2). Using a Grade 8 bolt eliminates protection and will result in gearbox failure.

Ever-Power PTO-oplossingen

Ever-Power supplies matching Series 6 and 8 shafts featuring:

• Wide Angle Joints for tighter turning radiuses.

• Friction Disc Clutches pre-set for 75-100 HP protection.

• Easy-Lock Yokes for quick tractor attachment.

• Full Safety Shielding to protect operators from rotating components.

Why Choose Ever-Power? (The Brazilian Advantage)

Choosing Ever-Power means partnering with a manufacturer that understands the reality of heavy-duty agriculture.

• Bron: OEM (Original Equipment Manufacturer) We forge, machine, and assemble in-house in Brazil. No trading companies, no markups. You get 30-40% savings vs. major brands.

• Tropical Engineering: Our products are validated in the punishing conditions of Brazilian agriculture. If it survives here, it will survive anywhere.

• Global Logistics: We hold stock for rapid deployment. From Rio de Janeiro to Brisbane, our logistics network delivers.

• Engineering Support: Need a custom spline? A specific ratio? Our engineering team is ready to assist with custom configurations.

Veelgestelde vragen (FAQ)

Q1: Will the EP-RC-71 fit my Rhino Ag 15ft Batwing?

A: This gearbox is commonly used on the center section or heavy-duty wing sections of batwing mowers. Check the mounting pattern and the gear ratio. Batwing dividers (splitters) are different, but the blade spindles (like the EP-RC-71) are often replaceable. Verify if your mower requires a 1:1.46 ratio.

Q2: My old gearbox says “Omni RC-71” on the tag. Is this a guaranteed fit?

A: Yes. The EP-RC-71 is dimensionally identical to the Omni RC-71. It will bolt onto the same pattern and accept the same blade hub and PTO shaft.

Q3: Can I run this gearbox at 1000 RPM? A: It depends on the Ratio.

A: The standard 1:1.46 is designed for 540 toeren per minuut input. If you need a 1000 RPM gearbox, we offer a 1:1.21– of 1:1-ratio version specifically for 1000 RPM tractors. Please specify your PTO speed when ordering.

Vraag 4: Wordt het geleverd met olie?

A: No. International shipping regulations require us to ship gearboxes droog. You must fill it with approx 1.04L (35 oz) of 80W-90 or 85W-140 Gear Lube before use.

Q5: What is the output shaft spline count?

A: The EP-RC-71 features a 15 Tapered Spline output shaft. This is the industry standard for 75HP+ gearboxes.

Upgrade Your Heavy-Duty Cutter with Ever-Power

Don’t let a busted gearbox sideline your big cutter. Choose the EP-RC-71 for the ultimate combination of Brazilian toughness, precision engineering, and factory-direct value.

Neem contact op met ons engineeringteam:

• E-mail: [email protected]
• Website: landbouwversnellingsbak.top