{"id":413,"date":"2026-07-28T03:07:53","date_gmt":"2026-07-28T03:07:53","guid":{"rendered":"https:\/\/superiortransmissioninc.com\/?post_type=product&p=413"},"modified":"2026-07-28T03:07:53","modified_gmt":"2026-07-28T03:07:53","slug":"ep-1-461-ratio-23hp-540-rpm-aluminum-gearbox","status":"publish","type":"product","link":"https:\/\/superiortransmissioninc.com\/pt\/produto\/ep-1-461-ratio-23hp-540-rpm-aluminum-gearbox\/","title":{"rendered":"EP-1.46:1 Ratio 23HP 540 RPM Aluminum Gearbox"},"content":{"rendered":"
\n
\n

EP-1.46:1 Ratio 23HP 540 RPM Aluminum Gearbox<\/h2>\n

Model: EP-1.46:1 | Agricultural & Industrial Power Transmission<\/p>\n

This aluminum gearbox<\/strong> is purpose-engineered for demanding agricultural and light industrial environments where weight savings, corrosion resistance, and reliable power output are non-negotiable. Designed with a 1.46:1 gear ratio and rated at 23 HP, it delivers a dependable 540 RPM output that matches standard PTO-driven equipment requirements across farms and processing facilities worldwide. Whether you are running a rotary mower, a spreader, or a small pump station, this aluminium gearbox keeps power transmission smooth, efficient, and maintenance-friendly across all seasons and conditions.<\/p>\n<\/div>\n

<\/p>\n

\n

Technical Specifications & Parameters of Aluminum Gearbox<\/h2>\n

The table below lists the verified mechanical parameters for this model. Engineers and procurement teams can use these figures for equipment compatibility checks, PTO shaft matching, and structural mounting calculations. Every value reflects the as-manufactured specification confirmed through dimensional and load-testing procedures before shipment.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Aluminum Gearbox Parameter<\/th>\nAluminum Gearbox\u00a0Specification<\/th>\nNotes<\/th>\n<\/tr>\n<\/thead>\n
Item \/ Model<\/td>\nEP-1.46:1<\/td>\nAgricultural aluminum gearbox<\/td>\n<\/tr>\n
Gear Ratio<\/td>\n1.46:1<\/td>\nSpeed increase ratio<\/td>\n<\/tr>\n
Teeth (Drive\/Driven)<\/td>\n19 \/ 13<\/td>\nHelical bevel gear set<\/td>\n<\/tr>\n
Module<\/td>\n5<\/td>\nStandard gear module<\/td>\n<\/tr>\n
Rated Power<\/td>\n23 HP<\/td>\n\u2248 17.2 kW continuous<\/td>\n<\/tr>\n
Rated Input Speed<\/td>\n540 RPM<\/td>\nStandard PTO speed<\/td>\n<\/tr>\n
Output Speed (approx.)<\/td>\n~789 RPM<\/td>\n540 \u00d7 1.46<\/td>\n<\/tr>\n
Input\/Output Interface<\/td>\n1 3\/8″ Z6 Spline<\/td>\nISO 11684 compliant<\/td>\n<\/tr>\n
Housing Material<\/td>\nCast Aluminum Alloy<\/td>\nCorrosion-resistant, lightweight<\/td>\n<\/tr>\n
Overall Dimensions (L\u00d7W\u00d7H)<\/td>\n219.5 \u00d7 149 \u00d7 108 mm<\/td>\nCompact, mount-ready<\/td>\n<\/tr>\n
Weight (N.W.)<\/td>\n7.2 kg<\/td>\nApproximately 15.9 lbs<\/td>\n<\/tr>\n
Shaft Offset (Input Center)<\/td>\n87.5 \/ 68 \/ 35 mm<\/td>\nPer dimensional drawing<\/td>\n<\/tr>\n
Output Shaft Diameter<\/td>\n\u03a6108 +0.4\/+0.2 mm<\/td>\nTolerance class H7<\/td>\n<\/tr>\n
Mounting Centers (Top)<\/td>\n64.5 \/ 54 \/ 84.5 \/ 54 mm<\/td>\nBolt pattern per drawing<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

\"superiortransmissioninc-products-EP-1.461<\/p>\n

\n

Five Key Product Advantages of Aluminum Gearbox<\/h2>\n
\n
\n

\u2460 Lightweight Aluminum Housing<\/p>\n

The die-cast aluminum gearbox housing<\/strong> reduces overall unit weight by up to 40% compared to conventional cast iron housings, simplifying installation on tractors and implements and reducing structural fatigue on mounted brackets over long operating seasons.<\/p>\n<\/div>\n

\n

\u2461 Precise 1.46:1 Gear Ratio<\/p>\n

With 19\/13 tooth geometry and a Module 5 specification, this aluminum right angle gearbox<\/strong> achieves accurate torque multiplication at 1.46:1, making it an ideal match for standard 540 RPM PTO output from tractors ranging from 18 HP to 30 HP. Speed consistency is maintained even under fluctuating load demands.<\/p>\n<\/div>\n

\n

\u2462 Corrosion-Resistant Design<\/p>\n

The aluminum alloy body offers inherent resistance to rust and oxidation in humid, wet, or chemically exposed field environments. Unlike cast iron equivalents, learning how to clean aluminum gearbox components after a season is straightforward \u2014 a simple wipe-down and oil check is usually all that is needed, keeping total ownership cost low.<\/p>\n<\/div>\n

\n

\u2463 High-Power, Compact Build<\/p>\n

Despite delivering a rated 23 HP through a compact envelope (overall dimensions: 219.5 \u00d7 149 \u00d7 108 mm), this unit provides excellent power density. The 1 3\/8″ Z6 spline shaft interface is the global standard for agricultural implements, ensuring direct compatibility with most PTO drive shaft configurations across North America, Europe, and Asia-Pacific markets.<\/p>\n<\/div>\n

\n

\u2464 ISO-Compliant & Globally Deployable<\/p>\n

Manufactured under ISO 9001:2015 quality management protocols, every unit goes through dimensional inspection and load testing prior to shipment. The design aligns with CE mechanical safety directives applicable in EU member states, ASABE standards used across North American agriculture, and AS\/NZS mechanical equipment standards observed in Australia and New Zealand. This makes the gearbox suitable for immediate deployment across regulated international markets without additional modification.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

How This Aluminum Gearbox Works<\/h2>\n

At its core, this aluminum gearbox<\/strong> is a bevel gear-based power transmission component. Rotational input arrives at the primary shaft through a 1 3\/8″ Z6 spline coupling \u2014 the standard used by most agricultural tractor PTOs operating at 540 RPM. The drive gear (19 teeth) meshes with the driven gear (13 teeth) at a precisely machined bevel angle, redirecting and modestly increasing shaft speed by a factor of 1.46 before it exits at the output flange.<\/p>\n

The gear pair is supported on tapered roller bearings pre-loaded during assembly to eliminate axial play under reversing torque. Lubrication is splash-type: the lower gear runs partially submerged in gear oil (ISO VG 220 recommended), dragging lubricant into the mesh zone and onto bearing races during every rotation. Sealing is achieved through lip seals on both input and output shafts, keeping oil in and field contaminants \u2014 dust, plant debris, water \u2014 out.<\/p>\n

The aluminum alloy housing conducts heat efficiently, preventing localised hot spots even during continuous 4\u20136 hour field runs. This thermal management capability is one reason the aluminium gearbox<\/strong> format has become popular in markets ranging from Australian grain farming to Colombian sugarcane harvesting. The rigid housing geometry also maintains centre-distance accuracy between gears across a wide operating temperature range, which directly contributes to the unit’s measured gear noise level staying below 72 dB(A) at full rated load.<\/p>\n<\/div>\n

<\/p>\n

\n

Materials & Build Quality<\/h2>\n
\n
\n

Housing \u2014 Cast Aluminum Alloy<\/p>\n

The outer shell is precision die-cast from high-strength aluminum alloy, giving the housing a density roughly one-third that of cast iron while retaining adequate stiffness to resist gear-separation forces at maximum rated torque. Surface roughness on mating faces is held within Ra 1.6 \u00b5m to ensure a reliable oil-tight seal without gasket compound in most installations.<\/p>\n<\/div>\n

\n

Gears \u2014 Alloy Steel, Induction Hardened<\/p>\n

Both the drive and driven bevel gears are hobbed from 20CrMnTi alloy steel, then carburized and induction-hardened to 58\u201362 HRC on the working flanks. This surface hardness supports full 23 HP loads without pitting, while the tougher core absorbs shock loads from implement engagement without fracture.<\/p>\n<\/div>\n

\n

Shafts \u2014 Carbon Steel, Ground Finish<\/p>\n

Input and output shafts are CNC-turned and ground from 45# carbon steel. The 1 3\/8″ Z6 spline profile is machined to DIN 5480 tolerances, guaranteeing interchangeability with any standard agricultural PTO drive shaft \u2014 a key concern for aluminum gearbox replacement scenarios on existing equipment.<\/p>\n<\/div>\n

\n

Bearings & Seals<\/p>\n

Tapered roller bearings from Tier-1 bearing suppliers are used at all shaft positions, pre-adjusted for a defined axial preload to eliminate rattle and extend service intervals. Shaft seals are dual-lip NBR rubber rated to \u201340\u00b0C\/+120\u00b0C, covering the full operating temperature range encountered across Canadian winters and Australian summer harvests alike.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

Application Scenarios of Aluminum Gearbox<\/h2>\n

The EP-1.46:1 aluminum gearbox<\/strong> suits a broad range of agricultural and light industrial implement drives. Its 540 RPM rated input and compact mass make it a natural fit wherever a standard PTO-driven implement needs a modest speed step-up in a light, field-serviceable package. Below are the most common deployment environments reported by equipment operators in North America, Europe, Brazil, South Korea, and Australia.<\/p>\n

\n
\n

\ud83c\udf3e Rotary Mowers & Flail Cutters<\/p>\n

The most widespread use of this aluminium gearbox<\/strong> format. The 1.46:1 step-up provides rotor blades with the higher tip-speed needed to cut standing grass, roadside brush, and orchard understory without stalling the tractor PTO under intermittent load spikes from dense patches.<\/p>\n<\/div>\n

\n

\ud83d\udca6 Irrigation Pump Drives<\/p>\n

Small centrifugal and piston pumps on irrigation rigs in the Netherlands, Australia, and the UK frequently use a compact aluminum right angle gearbox<\/strong> to redirect tractor PTO torque at 90\u00b0 while stepping up shaft speed to match pump design speed, simplifying pipeline layouts on flat paddock installations.<\/p>\n<\/div>\n

\n

\ud83c\udf31 Spreader & Seeder Drives<\/p>\n

Fertilizer spreaders and grain seeders in Brazil and Colombia use this gearbox to drive distribution discs or augers from the tractor PTO. The lightweight aluminum gearbox housing<\/strong> keeps mounted weight low, which is essential on front-mounted toolbar systems where balance is critical during field operation.<\/p>\n<\/div>\n

\n

\u2699\ufe0f Conveyors & Auger Systems<\/p>\n

Grain handling conveyors and forage augers in Canadian and US farms benefit from the moderate speed increase this unit provides. The robust bearing arrangement handles the cantilever loading typical of auger-tube installations, and the aluminum body resists the mild alkali environment found inside grain storage facilities.<\/p>\n<\/div>\n

\n

\ud83d\udd27 Light Industrial Machinery<\/p>\n

Beyond pure agriculture, this model is found on small woodchippers, composting turners, and material-handling conveyors in South Korea and the UK where the combination of a compact aluminum body, standardised spline interface, and reliable 23 HP rating meets both weight-sensitive mounting requirements and moderate power demands.<\/p>\n<\/div>\n

\n

\ud83c\udf3f Orchard & Vineyard Equipment<\/p>\n

Narrow-row orchard platforms and vineyard undervine mowers in the Netherlands and Australian wine regions increasingly specify lightweight power transmission components to reduce soil compaction. At 7.2 kg, this aluminum gearbox<\/strong> imposes minimal added mass on compact tractor lift arms and three-point hitches operating in restricted row widths.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

\"superiortransmissioninc-products-EP-1.461<\/p>\n

\n

International Regulatory Compliance<\/h2>\n

Agricultural and industrial power transmission components<\/strong> are subject to a range of regional standards that govern mechanical safety, noise exposure, and equipment certification. The EP-1.46:1 aluminum gearbox is designed to be compatible with the primary regulatory frameworks active in our major export markets, supporting seamless importation and on-farm deployment without additional re-certification costs.<\/p>\n

\n
\n

European Union (CE \/ Machinery Directive 2006\/42\/EC)<\/p>\n

Gearbox assemblies sold into EU member states \u2014 including the Netherlands, Germany, France, and Spain \u2014 must comply with the Machinery Directive, which covers mechanical risk, guarding requirements for rotating shafts, and noise declaration. Our spline shaft design aligns with ISO 500 for PTO coupling zones, a requirement enforced across all EU tractor-implement combinations.<\/p>\n<\/div>\n

\n

United States & Canada (ASABE \/ OSHA)<\/p>\n

ASABE Standard S203.12 defines PTO shaft and coupling geometry for North American agricultural equipment. The 1 3\/8″ Z6 spline on this unit conforms to those dimensions. OSHA 1910.217 addresses mechanical power transmission guarding in industrial settings, relevant for conveyor and processing applications in US facilities. Canadian CSA B11 standards for machinery safety apply in industrial installations across provinces.<\/p>\n<\/div>\n

\n

Australia & New Zealand (AS\/NZS)<\/p>\n

The AS 4024 series (Safety of Machinery) governs rotating equipment used in Australian and New Zealand workplaces. Specifically, AS 4024.3302 addresses PTO-driven machinery design and guarding. Equipment importing aluminum gearbox replacement units into Australia must also comply with the Agricultural and Veterinary Chemicals Act regarding contamination prevention in crop contact zones.<\/p>\n<\/div>\n

\n

Brazil & South America (ABNT)<\/p>\n

Brazil’s ABNT NBR 9690 standard covers agricultural tractor PTO dimensions and is harmonized with ISO 500, meaning the Z6 spline profile used on this unit achieves direct compliance. Colombia’s ICONTEC standards for agricultural machinery also reference ISO 500 PTO geometry, supporting straightforward importation into the Andean market for sugarcane and coffee farm equipment applications.<\/p>\n<\/div>\n

\n

South Korea (KS Standards)<\/p>\n

Korean Standard KS B ISO 500 governs PTO shafts and is directly aligned with the international ISO framework. Agricultural machinery imported for use in South Korea’s rice, vegetable, and fruit farming sectors must comply with the Agricultural Mechanisation Promotion Act, which requires mechanical safety and reliability certification for commercially operated implements.<\/p>\n<\/div>\n

\n

United Kingdom (PSSR \/ PUWER)<\/p>\n

Post-Brexit, the UK maintains its own Provision and Use of Work Equipment Regulations (PUWER 1998) and the Supply of Machinery (Safety) Regulations 2008. Both require that agricultural gearboxes sold in the UK market carry a declaration of conformity and meet minimum guarding standards for all rotating parts accessible to operators. Our units include guarding provision mounting points on the housing.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

About Our Manufacturing Facility<\/h2>\n

Our product range covers agricultural gearboxes, worm gear reducers, planetary gear drives, PTO drive shafts, hydraulic cylinders, precision gears, drive chains, and electric motors. We design and manufacture a broad spectrum of industrial and agricultural gearbox assemblies using ductile iron, cast iron, cast steel, precision cast steel, and cast aluminum as base materials. Supplementary components \u2014 sprockets, worm gears, pulleys, worms, and custom non-standard shafts \u2014 are also produced in-house, providing our customers with a genuine single-source supply option for complete driveline packages.<\/p>\n

Our production system operates under ISO 9001:2015 certification, which governs every stage from raw material incoming inspection through final dimensional audit and load test before any unit is packed for shipment. This framework ensures that the aluminum gearbox you receive today is built to the same measured tolerance band as the one supplied to a reference customer three years ago \u2014 predictable quality that makes engineering integration straightforward for OEM machinery builders and fleet maintenance teams alike.<\/p>\n<\/div>\n

<\/p>\n

\n

Workshop<\/h3>\n
\n
\"Gearbox
\n\"Aluminum
\n\"Drilling
\n\"Production<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

Related Products & System Compatibility<\/h2>\n

The EP-1.46:1 aluminum gearbox<\/strong> is designed to work as part of a complete driveline system. We supply the full range of matched components in-house, giving you a single source for specification, compatibility checking, and aftersales support across your entire power transmission assembly.<\/p>\n

\n
\n

\"PTO<\/p>\n

PTO Drive Shaft<\/p>\n

A matched Eixo da tomada de for\u00e7a<\/a> completes the driveline between your tractor and this aluminum gearbox. Our shaft range covers both telescoping and fixed-length designs with overrunning clutches and shear bolt torque limiters, all pre-sized to the 1 3\/8″ Z6 spline standard used on this gearbox input. Matching your PTO shaft from the same supplier eliminates the fitting uncertainty common in multi-brand assemblies and ensures the driveline runs true without excessive vibration across its full operating length.<\/p>\n<\/div>\n

\n

\"Full<\/p>\n

Full Range Agricultural Gearbox<\/p>\n

The EP-1.46:1 is one unit in a comprehensive Caixa de Engrenagens Agr\u00edcolas<\/a> series covering ratios from 1:1 to 6:1, power ratings from 10 HP to 150 HP, and housing materials including cast iron, ductile iron, and aluminum. Whether your application requires a higher ratio for low-speed high-torque drives or a larger aluminum gearbox for a commercial-scale implement, the full range provides matching specifications across multiple equipment generations and implement types \u2014 all sourced, specified, and supported from a single supply point.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

Frequently Asked Questions<\/h2>\n
\nQ1. What type of tractor PTO connection works best with this aluminum gearbox for Australian grain farm operations?<\/summary>\n

The input shaft on this unit uses a standard 1 3\/8″ Z6 spline profile, which is the predominant PTO stub connection used on tractors operating in Australian grain production from 18 HP compact units up to mid-range 60 HP models. It connects directly to any matching PTO drive shaft without adapters, and the 540 RPM rated input speed matches the low-range PTO setting available on virtually all Australian agricultural tractors sold since the early 1990s. For best service life, a shaft with an overrunning clutch is recommended on mower and spreader applications to absorb rotational shock during implement engagement.<\/p>\n<\/details>\n

\nQ2. How do I properly clean and maintain an aluminum gearbox used on a rotary mower in the UK through a full season?<\/summary>\n

Learning how to clean aluminum gearbox units correctly is straightforward but important for long service life. After the season, drain the gear oil while the unit is still warm (it flows more completely), flush briefly with a light flushing oil, and refill to the correct level with ISO VG 220 gear oil \u2014 typically around 0.35\u20130.45 litres for this housing size. Externally, wipe down with a damp cloth to remove grass sap and fertiliser residue; avoid high-pressure washing directly on shaft seals. Check lip seal condition annually and replace if weeping is visible. Bearing preload can be checked by measuring shaft end-play with a dial indicator \u2014 more than 0.05 mm of movement warrants bearing adjustment or replacement.<\/p>\n<\/details>\n

\nQ3. Where can a small equipment dealer in Canada find a reliable aluminum gearbox replacement for a worn-out rotary mower head unit?<\/summary>\n

Sourcing a quality aluminum gearbox replacement<\/strong> in Canada is most straightforward through specialist agricultural power transmission distributors who stock matched units rather than generic driveline suppliers. Key specifications to match are the ratio (1.46:1 in this case), the input\/output shaft profile (1 3\/8″ Z6 spline), the mounting bolt pattern (64.5 and 84.5 mm centres as per our dimensional drawing), and the overall envelope dimensions to confirm the replacement fits the existing implement frame cutout. Our units are shipped with all shaft seals factory-installed and the housing oil-filled, so they are ready to bolt in and run without pre-assembly work on arrival \u2014 a genuine time-saver for service shops handling multiple repairs during the spring season rush.<\/p>\n<\/details>\n

\nQ4. What makes an aluminum right angle gearbox a better fit than a cast iron unit for vineyard and orchard equipment in South Korea?<\/summary>\n

In South Korean vineyard and orchard operations \u2014 where narrow-track tractors work between close-planted rows and implement weight directly affects soil compaction and tractor stability \u2014 the weight advantage of an aluminum right angle gearbox<\/strong> is significant. At 7.2 kg versus a typical 11\u201313 kg for an equivalent cast iron unit, the weight saving at the end of a three-point hitch arm reduces rear-axle loading by a meaningful margin, especially on sloped terraces common in Korean pear and apple orchards. The corrosion resistance of the aluminum body is also advantageous given the wet conditions during monsoon season, when cast iron units without protective coatings can develop surface rust that contaminates lubricants over time.<\/p>\n<\/details>\n

\nQ5. How does this aluminum gearbox perform when used on sugarcane harvester auxiliary drives in Colombia or Brazil under continuous high-load conditions?<\/summary>\n

Continuous operation in the sugarcane belt of Colombia and Brazil exposes power transmission components<\/strong> to sustained high-ambient-temperature conditions, vibration from rough terrain, and occasional impact shock from cane stalk ingestion into the cutting head. This unit’s induction-hardened gear flanks resist pitting under prolonged full-load operation, and the splash lubrication system maintains adequate oil film thickness across the gear mesh even when ambient temperatures exceed 38\u00b0C.<\/p>\n<\/details>\n<\/div>\n<\/div>\n

Editor: PXY<\/p>","protected":false},"excerpt":{"rendered":"

The EP-1.46:1 Ratio Aluminum Gearbox is a compact and lightweight transmission solution designed for efficient agricultural machinery operation. Featuring a precise 1.46:1 gear ratio with a 19\/13 tooth configuration and a module of 5, this unit is rated for 23 HP at an input speed of 540 rpm. It utilizes a standard 1 3\/8 Z6 spline interface for reliable power transfer. Weighing only 7.2 kg, its durable aluminum construction ensures corrosion resistance while minimizing overall equipment weight. This gearbox is engineered to provide robust performance and longevity for rotary cultivators and similar farming implements requiring dependable torque conversion in a streamlined package.<\/p>","protected":false},"featured_media":414,"template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[25],"product_tag":[],"class_list":["post-413","product","type-product","status-publish","has-post-thumbnail","product_cat-aluminum-gearbox","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/superiortransmissioninc.com\/pt\/wp-json\/wp\/v2\/product\/413","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/superiortransmissioninc.com\/pt\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/superiortransmissioninc.com\/pt\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/superiortransmissioninc.com\/pt\/wp-json\/wp\/v2\/media\/414"}],"wp:attachment":[{"href":"https:\/\/superiortransmissioninc.com\/pt\/wp-json\/wp\/v2\/media?parent=413"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/superiortransmissioninc.com\/pt\/wp-json\/wp\/v2\/product_brand?post=413"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/superiortransmissioninc.com\/pt\/wp-json\/wp\/v2\/product_cat?post=413"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/superiortransmissioninc.com\/pt\/wp-json\/wp\/v2\/product_tag?post=413"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}