Descripción
Right-Angle Bevel Drive | Ratios 1:1 / 1.46:1 / 1:2.91 | Input: 13/8 Z6 Spline | Output: Optic Axis | Weight: 7 kg
Technical Specifications
All parameters below apply to the EP-RV22X aluminum gearbox as supplied. This aluminum gearbox is built to satisfy the demands of modern farm machinery operating across South America. External dimensions are in millimetres. Buyers should note that the 54 mm flange spacing on the mounting face is shared with several implement brands common in the Brazilian and Argentine markets, simplifying bracket reuse during gearbox replacement procedures. Many machinery operators choose this aluminum gearbox thanks to its universal mounting footprint and lightweight aluminium construction.
| Parameter | Value |
|---|---|
| Modelo | EP-RV22X |
| Gear Ratio Options | 1:1 / 1.46:1 / 1:2.91 |
| Teeth (pairs) | 19/19 | 19/13 | 32/11 |
| Module | 4.5 / 5.0 / 3.0 |
| Rated Power | 15 HP |
| Rated Input Speed | 540 RPM |
| Input Shaft | 1 3/8 Z6 Spline |
| Output Shaft | Optic Axis |
| Net Weight | 7 kg |
| Material de vivienda | Die-cast Aluminium Alloy |
| Overall Width (top) | 84.5 mm + 78 mm + 78 mm = 240.5 mm |
| Flange Spacing | 54 mm x 54 mm |
| Overall Height | 131.7 mm + 62 mm = 193.7 mm |
| Side Projection (input side) | 38 mm |
| Tipo de lubricación | Splash lubrication, ISO VG 220 gear oil recommended |
| Mounting Configuration | Flange-mount, four-bolt pattern |
Operating Principle
The EP-RV22X transmits rotational power through a right-angle bevel gear set housed within the aluminium body. This aluminum gearbox delivers stable torque transfer under variable field loads. Input torque enters via the 13/8 Z6 spline shaft at 540 RPM and engages a precision-cut bevel pinion. The bevel gear redirects the rotational axis by 90 degrees and, depending on the ratio configuration installed, either maintains speed (1:1 — 19/19 tooth pair, M4.5), increases it by a factor of 1.46 (19/13 tooth pair, M5.0), or steps it down to approximately 185 RPM at the 2.91:1 reduction (32/11 tooth pair, M3.0).
The larger module values used in the 1:1 and 1.46:1 ratio configurations — M4.5 and M5.0 respectively — reflect the higher pitch-line forces at full-speed operation. A larger module means deeper, wider teeth that distribute contact stress over a greater area, which is essential when operating at 540 RPM with implements that experience frequent load spikes, such as disc mowers cutting dense tropical grasses or heavy-crop balers cycling at full throughput. Many equipment builders select this aluminum gearbox for its balanced strength and compact dimensions. The M3.0 step-down ratio uses a higher tooth count (32 teeth on the driven gear) to achieve the reduction while keeping overall housing dimensions manageable.
Shaft support is provided by tapered roller bearings on the input and deep-groove ball bearings on the output, a combination that manages the combined radial and axial loads generated by bevel gear mesh geometry. The aluminium housing channels gear oil via splash lubrication, with the gear rotation continuously lifting oil from the sump and distributing it across the tooth faces and bearing surfaces. This passive system requires no oil pump, making maintenance straightforward for every operator using this aluminum gearbox.
Material Composition
The aluminum gearbox housing is pressure die-cast from aluminium alloy with mechanical properties comparable to ADC12 or A380 grades — tensile strength in the 310–330 MPa range, Brinell hardness of 80–90 HB, and good thermal conductivity that helps dissipate gear-mesh heat during sustained operation. Heat dissipation is a key advantage that makes this aluminum gearbox stand out against cast iron alternatives. At 7 kg total weight, the unit is approximately 55% lighter than an equivalent grey-iron housing design, which matters for operators mounting implements without mechanical assistance in field conditions across Brazil, Sub-Saharan Africa, and Southeast Asia.
Internal gear blanks are forged or bar-turned from 20CrMnTi or equivalent medium-alloy steel, then carburised and case-hardened to a surface hardness of 58–62 HRC. This provides excellent fatigue resistance in the tooth root fillet area — the most common failure initiation site in agricultural bevel gears — while keeping the gear core ductile enough to absorb the type of sudden overloads caused by PTO driveline engagement at elevated engine RPM. Shafts are turned from 42CrMo4 alloy steel, hardened and ground to achieve the bearing seat and spline tolerances needed for interference-free assembly.
Sealing is achieved through double-lip NBR (nitrile butadiene rubber) oil seals on all three shaft exits, rated for continuous operation in gear oil at temperatures up to 120°C. For markets with particularly aggressive humidity or salt-air exposure — northeastern Brazil’s coastal agricultural zone, for instance, or irrigated sugar-cane operations where the aluminium gear box is exposed to cane-wash spray — an optional surface anodising treatment is available to extend the housing service life of this aluminum gearbox between cosmetic inspections.
Five Key Advantages
1. Native 540 RPM Driveline Compatibility
Rated at the full 540 RPM PTO standard, the EP-RV22X is engineered for mid-range and high-power tractors without requiring speed-reduction intermediary components. This direct compatibility eliminates an additional failure point and reduces the overall driveline assembly length, which is particularly valuable on compact implement designs where chassis clearance is constrained. This aluminum gearbox works seamlessly with mainstream tractor PTO setups used across South America.
2. Three Ratio Options in One Housing
Stocking one EP-RV22X housing covers three distinct driveline requirements: full-speed pass-through at 1:1, speed increase at 1.46:1 for high-tip-speed rotary cutters, and torque multiplication at 2.91:1 for heavy-load slow-speed drives. This ratio breadth reduces the number of part numbers a dealer or OEM must carry without sacrificing application coverage across the full implement range. Distributors enjoy simplified inventory management by ordering this versatile aluminum gearbox.
3. Robust Gear Geometry for High-Load Cycles
The M5.0 gear set used in the 1.46:1 ratio configuration features the largest tooth pitch in the EP-RV22X range, providing a higher load-carrying capacity per tooth than standard agricultural gearbox designs at this power level. This oversizing strategy extends the interval between tooth-face pitting failures under the repetitive shock loading typical of disc mowers and flail heads in crop-heavy tropical conditions. The reinforced internal gearing ensures long service life for this aluminum gearbox.
4. Aluminium Housing with Field-Serviceable Design
All inspection and service access points on the EP-RV22X are reachable with standard metric hand tools. The oil fill and drain plugs are positioned on opposite faces to allow gravity draining without implement removal in most mounting orientations. The low housing weight allows a single technician to remove and reinstall the unit in field conditions, reducing downtime during harvest or planting windows when equipment availability is critical. Servicing this aluminum gearbox requires no special workshop equipment.
5. Direct OEM and Aftermarket Replacement Fit
The four-bolt flange pattern with 54 mm bolt spacing matches the mounting footprint used across a wide range of European and South American implement brands in the 15 HP class. The 13/8 Z6 input spline and optic-axis output mean this unit serves as a drop-fit aluminum gearbox replacement for numerous competitor housings, enabling aftermarket parts distributors to offer a single SKU covering multiple OEM fitment positions. Many repair shops rely on this aluminum gearbox for fast turnaround replacement jobs.
Application Scenarios
The EP-RV22X right-angle bevel drive configuration makes it effective across a wide variety of field and light-industrial applications. This aluminum gearbox fits dozens of common farm machines deployed across tropical agricultural zones. The following scenarios represent the most common deployment environments for this unit.
Disc Mowers and Rotary Cutters
At the 1.46:1 speed-increasing ratio, the EP-RV22X raises the output shaft speed to approximately 788 RPM from a 540 RPM PTO input. This speed increase is used by disc mower designs to achieve the blade tip velocity needed for clean-cut performance in heavy tropical grasses common across Brazil’s Cerrado and the cattle grazing regions of Mato Grosso do Sul. The M5.0 gear module handles the shock loads generated when blades contact dense stems or hidden obstacles, protecting the aluminum gearbox against sudden impact damage.
Round Balers and Wrapping Machines
In round baler drivelines, the 1:1 ratio option provides a clean right-angle drive to bale chamber rotor assemblies without altering the carefully engineered PTO-speed relationship that controls bale density and net-wrap timing. The compact aluminium housing fits within the tight chassis envelope typical of mid-range baler designs and does not add significant weight to the rear linkage balance calculation. Operators value the lightweight build of this aluminum gearbox for baler retrofit work.
Precision Seeders and Planters
The 2.91:1 step-down ratio reduces the 540 RPM input to approximately 185 RPM for drive seed metering rollers and fertiliser distribution augers. Precise, low-speed output maintains seeding rate accuracy across varying ground speeds. The aluminium housing resists corrosion from seed treatments and liquid fertiliser splash better than comparable iron units, extending the service life of this aluminum gearbox in environments where chemical exposure is routine.
Sugar Cane Harvester Auxiliary Drives
Brazil’s sugar cane harvest sector uses a range of 540 RPM PTO auxiliary drives for topper assemblies, chopper elevation drives, and cleaning fan systems. The EP-RV22X aluminum right angle gearbox fits several of these secondary drive positions, where the combination of 15 HP capacity and compact aluminium housing avoids adding structural load to harvester boom assemblies already carrying significant self-weight. Many cane equipment workshops stock this aluminum gearbox for fast component swaps.
Industrial Conveyor and Mixer Drives
Beyond agriculture, this aluminum gearbox unit integrates into light industrial conveyor transfer stations and tank mixer drives where a compact, right-angle transmission with a standardised output shaft is required. The optic-axis output accepts keyway hubs and shaft couplings without modification, allowing retrofit into existing line equipment frames using standard mechanical interface components. Factories appreciate the consistent performance of this aluminum gearbox for continuous low-to-medium duty cycles.
Regulatory Compliance by Market
As a mechanical sub-component, the EP-RV22X is incorporated into finished machinery that must meet the safety and environmental standards of the target market. The following regulatory frameworks are relevant to buyers specifying this aluminum gearbox for machines sold into these regions.
Brazil — ABNT, INMETRO, and MAPA
Agricultural machinery sold or registered in Brazil must comply with relevant ABNT NBR technical standards. INMETRO oversees conformity assessment for mechanical components, and MAPA (Ministério da Agricultura) regulates the importation and registration of agricultural implements. Importers should classify the EP-RV22X under the appropriate NCM code (typically under 8483 for transmission shafts and gears) and prepare Portuguese-language technical documentation to accompany Receita Federal import declarations for every shipment of this aluminum gearbox.
European Union — Machinery Directive 2006/42/EC
Machines sold in the EU containing this unit must carry CE marking under the Machinery Directive. Essential health and safety requirements include PTO shaft guarding to ISO 11684, rated torque documentation, and confirmation that the gearbox oil seals prevent lubricant discharge into the environment. The gearbox supplier must provide a Declaration of Incorporation and technical specifications that support the machine builder’s CE technical file when integrating this aluminum gearbox.
United States — ASABE S318, OSHA 1910.219
The 13/8 Z6 spline interface of the EP-RV22X conforms to ASABE Standard S318, the governing specification for agricultural tractor PTO shafts in the US market. Industrial installations must also comply with OSHA 29 CFR 1910.219, which mandates guarding for all rotating mechanical power transmission components accessible to personnel. Compliant PTO shaft guard kits are available as accessories to pair with this aluminum gearbox.
Australia — WHS Regulations and AS/NZS Standards
Work Health and Safety regulations in Australia require that agricultural machinery incorporating PTO-driven components meets guarding standards under the Model WHS Regulations. The AS/NZS 4600 series provides guidance on structural and mechanical safety. Lubricant management plans are increasingly required by state-level environmental agencies, particularly for operations near waterways or on irrigated properties running equipment fitted with this aluminum gearbox.
ISO International Standards
ISO 6336 and ISO 10300 govern gear rating calculations for cylindrical and bevel gears respectively, providing a globally recognised basis for load capacity claims. ISO 1328 specifies accuracy grades for gear tooth geometry. These standards are referenced in our engineering documentation and support integration into CE-marked, ASABE-compliant, and other certified machinery without additional test campaigns by the machine builder using this aluminum gearbox.
About Our Engineering Team
Our design and manufacturing operation specialises in power transmission components for agricultural mechanisation and industrial automation. With more than 20 years of focused experience in bevel gearbox design, worm reduction units, and PTO driveline assemblies, our engineering team applies ISO gear rating methodology to every product specification. All production gearboxes undergo loaded run-in testing before dispatch, and dimensional reports are available for OEM buyers requiring incoming quality documentation when ordering this aluminum gearbox.
We operate dedicated stock programmes for Brazilian importers and Latin American distributors, with pre-clearance documentation packages available in Portuguese. Technical support is available in English, Portuguese, and Spanish to cover the primary language needs of our global distribution network. Whether you are sourcing a single aluminum gearbox replacement unit or placing a blanket OEM order for a new implement model, our sales and engineering teams can assist with ratio selection, mounting verification, and volume lead time planning for your chosen aluminum gearbox.
Workshop
Engineer Field Notes
Ricardo A. — Implement Design Engineer, Implement OEM, Sao Paulo State, Brazil
Procurement purpose: EP-RV22X units for a new compact disc mower model entering the Brazilian market
We were looking for a 540 RPM capable aluminum right angle gearbox that could handle the 1.46:1 speed-up ratio our disc cutter design needed, without custom housing work. The EP-RV22X matched our bolt pattern on the first check — 54 mm centres both ways, exactly what we had clearance for on the frame. We ran a 200-hour bench test under simulated field load cycling before signing off, and there was no measurable gear wear on the tooth faces and no oil seal weep. Our production team finds the unit easy to handle during assembly line mounting given the 7 kg weight. We are now on our third production batch without a warranty claim on this aluminum gearbox specifically.
Pieter V. — Agricultural Machinery Procurement Engineer, Equipment Distributor, Gauteng, South Africa
Procurement purpose: Replacement gearboxes for a mixed fleet of rotary cutters used on game reserve grass management
Our fleet operates across a range of grass conditions from short dry-season stub to two-metre green season growth, and the previous iron-housing units were adding unwanted weight to the cutter mounting frames. We switched 14 units to this aluminium version across two seasons. Dust ingress into the seals is our biggest concern in the southern African context, and I can say the lip seals on the EP-RV22X held up better than expected — only two units needed oil-seal attention out of 14 over a full 12-month cycle. The 1.46:1 ratio is the right choice for our Massey and New Holland tractors at 540 PTO. Would specify this aluminum gearbox again.
System-Compatible Products
The EP-RV22X is most effective as part of a matched driveline assembly. We supply the following complementary components to support complete system procurement from a single source, eliminating interface uncertainty and simplifying after-sales support for anyone purchasing this aluminum gearbox.
PTO Drive Shafts
Our telescoping PTO shaft range is manufactured to interface directly with the 13/8 Z6 spline input of the EP-RV22X. Cross-joint assemblies are rated to 540 RPM and are available with full CE-compliant guarding sets. Matching shaft length to implement mounting geometry eliminates joint angle issues that reduce cross-joint service life and protect your aluminum gearbox against torsional overload.
Agricultural Gearboxes
Where the EP-RV22X output feeds a secondary reduction stage or a multi-output distribution gearbox, our full range of bevel, helical, and worm-type cajas de cambio agrícolas provides the downstream reduction or splitting function. Sourcing both stages from the same supplier guarantees shaft interface compatibility and gives you a single point of contact for after-sales support for your aluminum gearbox.
Frequently Asked Questions
Q1. What makes the EP-RV22X aluminum gearbox suitable for 540 RPM PTO applications on mid-range tractors in Brazil?
The EP-RV22X is rated at 540 RPM input and 15 HP, matching the output characteristics of mid-range tractors from 55 HP upward. The gear modules used — M4.5 for the 1:1 set and M5.0 for the speed-up set — are sized for the torque levels produced by these tractors under full field load, including the spike loads generated during PTO engagement or when blades contact embedded obstacles in Brazilian field conditions. These engineering choices ensure this aluminum gearbox delivers stable performance in harsh farm environments.
Q2. How do I select the correct gear ratio when replacing an aluminum right angle gearbox on a disc mower in South America?
Check the output shaft speed specification on your mower’s blade carrier. If the blade shaft is designed to run at approximately 788 RPM from a 540 RPM PTO, specify the 1.46:1 ratio. If the cutter shaft runs at 540 RPM matching PTO speed, choose 1:1. For slow-speed drives such as reel carriers or conveyor feeds, the 2.91:1 ratio provides approximately 185 RPM output. When in doubt, our technical team can cross-reference your existing unit’s part number to confirm the ratio and confirm compatibility with this aluminum gearbox.
Q3. What gear oil viscosity grade should I use in an aluminium gear box operating in tropical field conditions in Brazil?
ISO VG 220 mineral gear oil is the standard recommendation for ambient temperatures up to 35°C. For operations in the Cerrado or Amazon agricultural zones where ambient temperatures regularly exceed 35°C, ISO VG 320 provides better film thickness retention at elevated sump temperatures. Synthetic PAO-based gear oil is the preferred option for units running extended daily hours, as it maintains film stability across a wider temperature range and supports longer drain intervals to protect your aluminum gearbox.
Q4. How can I verify whether the EP-RV22X aluminum gearbox housing will fit my existing implement bracket without modification?
The four-bolt mounting flange uses 54 mm bolt centre spacing in both directions on a square pattern. Measure your existing housing’s bolt centres or consult the implement manufacturer’s parts manual for the housing mounting footprint. If your bracket is designed for a standard 15 HP class agricultural gearbox with 54 mm bolt spacing, the EP-RV22X will mount without modification. Send us your existing unit’s OEM part number and we can confirm dimensional compatibility for this aluminum gearbox from our cross-reference database.
Q6. Where can agricultural machinery dealers in Argentina source EP-RV22X aluminum gearbox units for aftermarket replacement stock?
We supply through established agricultural parts distributors operating across the Mercosur market, including Argentina, Uruguay, and Paraguay. Contact our export sales team directly for distributor referrals in your province or for information on direct import arrangements. We provide Portuguese and Spanish documentation packages and can supply packing-list formats that simplify Argentine AFIP import declaration procedures for mechanical components classified under the applicable NCE tariff headings for this aluminum gearbox.
Q7. What are the visible signs that an aluminium gear box needs replacement rather than repair on a round baler in field conditions?
Look for oil leaking from a cracked housing wall — identifiable as a clean line in the casting rather than a seal line. Bearing knock audible through the housing at any ratio indicates inner-race or roller damage that requires bearing replacement, which in turn requires housing disassembly. Severe gear noise at one specific ratio but not others points to tooth damage on that particular gear pair. Housing cracks near bearing bores, if measurable with a bore gauge as out-of-round, mean the housing should be replaced rather than repaired to preserve reliability of your aluminum gearbox.
Q8. How does the aluminium housing design of the EP-RV22X affect its performance compared to a steel-housing unit in humid coastal regions of Brazil?
Aluminium alloy naturally forms a protective oxide layer that resists moisture-driven corrosion on external surfaces, unlike steel housings that develop rust at fastener holes and mating faces. In coastal Bahia or coastal Espirito Santo cane regions, a steel housing can develop rust-locked inspection plugs and seized drain screws within two to three seasons. The aluminium housing avoids these maintenance complications, keeping routine service quick and preventing the corrosion-induced stress cracking that sometimes develops around fastener holes on older steel units, extending the usable lifespan of this aluminum gearbox.
Q9. Which PTO shaft length is appropriate when connecting the EP-RV22X aluminum gearbox to a three-point hitch-mounted disc mower?
Calculate the shaft length by measuring the distance between the tractor PTO output face and the gearbox input spline face with the hitch in the mid-working position. Add 100–150 mm to allow the shaft to collapse without bottoming out at full hitch raise, and extend without separating at the maximum lowered position. The shaft should be ordered with 13/8 Z6 spline yokes on both ends to match the tractor PTO and the EP-RV22X input. Cross-joint angle should not exceed 15 degrees at any hitch position to prevent premature wear to your aluminum gearbox.
Editor: PXY
