{"id":1982,"date":"2026-03-23T08:45:21","date_gmt":"2026-03-23T08:45:21","guid":{"rendered":"https:\/\/ptogearbox.xyz\/product\/ep-1zs-380-heavy-duty-lawn-mower-pto-gearbox\/"},"modified":"2026-03-23T08:45:28","modified_gmt":"2026-03-23T08:45:28","slug":"ep-1zs-380-heavy-duty-lawn-mower-pto-gearbox","status":"publish","type":"product","link":"https:\/\/ptogearbox.xyz\/th\/product\/ep-1zs-380-heavy-duty-lawn-mower-pto-gearbox\/","title":{"rendered":"EP-1ZS-380 Heavy-Duty Lawn Mower PTO Gearbox"},"content":{"rendered":"
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EP-1ZS-380 Heavy-Duty Lawn Mower PTO Gearbox \u2014 Precision PTO Gearbox for Agricultural Implements<\/h2>\n

The EP-1ZS-380 is a precision-engineered Heavy-Duty Lawn Mower PTO Gearbox designed for demanding agricultural operations. Built with spiral bevel gears and a rugged ductile cast iron housing, this gearbox delivers reliable power transmission at a 1:1.24 gear ratio with up to 100HP capacity.<\/p>\n

\"EP-1ZS-380<\/p>\n

📋 EP-1ZS-380 Technical Specifications<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u0e1e\u0e32\u0e23\u0e32\u0e21\u0e34\u0e40\u0e15\u0e2d\u0e23\u0e4c<\/th>\n\u0e02\u0e49\u0e2d\u0e01\u0e33\u0e2b\u0e19\u0e14<\/th>\n<\/tr>\n<\/thead>\n
Model<\/strong><\/td>\nEP-1ZS-380<\/td>\n<\/tr>\n
\u0e2d\u0e31\u0e15\u0e23\u0e32\u0e17\u0e14\u0e40\u0e01\u0e35\u0e22\u0e23\u0e4c<\/strong><\/td>\n1:1.24<\/td>\n<\/tr>\n
Gear Teeth<\/strong><\/td>\n21\/17\/17\/17<\/td>\n<\/tr>\n
Gear Module<\/strong><\/td>\n7.0<\/td>\n<\/tr>\n
Rated Power (HP)<\/strong><\/td>\n100<\/td>\n<\/tr>\n
Rated Input Speed<\/strong><\/td>\n540 \u0e23\u0e2d\u0e1a\u0e15\u0e48\u0e2d\u0e19\u0e32\u0e17\u0e35<\/td>\n<\/tr>\n
Input\/Output<\/strong><\/td>\nSpline<\/td>\n<\/tr>\n
Gear Material<\/strong><\/td>\n20CrMnTi Alloy Steel, Carburized & Quenched (58-62 HRC)<\/td>\n<\/tr>\n
\u0e27\u0e31\u0e2a\u0e14\u0e38\u0e2a\u0e33\u0e2b\u0e23\u0e31\u0e1a\u0e17\u0e35\u0e48\u0e2d\u0e22\u0e39\u0e48\u0e2d\u0e32\u0e28\u0e31\u0e22<\/strong><\/td>\nDuctile Cast Iron<\/td>\n<\/tr>\n
Bearings<\/strong><\/td>\n\u0e15\u0e25\u0e31\u0e1a\u0e25\u0e39\u0e01\u0e1b\u0e37\u0e19\u0e25\u0e39\u0e01\u0e01\u0e25\u0e34\u0e49\u0e07\u0e40\u0e23\u0e35\u0e22\u0e27<\/td>\n<\/tr>\n
Seals<\/strong><\/td>\nDouble-Lip NBR Oil Seals with Dust Excluder<\/td>\n<\/tr>\n
Net Weight<\/strong><\/td>\n42.5 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

⭐ Key Features & Engineering Advantages<\/h3>\n
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🛡 Ductile Cast Iron Housing<\/h4>\n

QT450-10 ductile cast iron housing with tensile strength exceeding 450 MPa \u2014 resists impact from rocks, stumps, and debris encountered during mowing operations. Outlasts aluminum in heavy-duty applications by 3x.<\/p>\n<\/div>\n

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💧 IP65 Dust & Moisture Sealed<\/h4>\n

Double-lip NBR oil seals with dust excluder design rated IP65 keep contaminants out and lubricant in \u2014 critical for gearboxes operating in dusty, wet grass-cutting environments.<\/p>\n<\/div>\n

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⚡ 96% Transmission Efficiency<\/h4>\n

Precision-lapped spiral bevel gear tooth profiles minimize friction losses, delivering 96%+ mechanical efficiency \u2014 translating to lower fuel consumption and reduced tractor PTO load during extended mowing sessions.<\/p>\n<\/div>\n

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🔧 Drop-In Replacement Compatibility<\/h4>\n

Mounting bolt patterns and shaft dimensions are engineered to match or replace major aftermarket and OEM mower gearbox specifications, enabling quick swap-outs without modification. (Brand names referenced for fitment only \u2014 not trademark claims.)<\/em><\/p>\n<\/div>\n

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💥 Shock Load Resistant Design<\/h4>\n

Integrated shear bolt protection and oversized tapered roller bearings absorb sudden impact loads \u2014 ideal for rotary cutters hitting hidden obstacles at speed.<\/p>\n<\/div>\n

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🌡️ Extended Temperature Lubricant<\/h4>\n

Factory-filled with EP90 gear oil rated for operation from -25\u00b0C to +120\u00b0C, enabling reliable performance across seasons from frozen winter fields to scorching summer conditions.<\/p>\n<\/div>\n<\/div>\n

🔄 Compatibility & Fitment Information<\/h3>\n

The EP-1ZS-380 is designed with standard industry mounting dimensions and shaft specifications, making it a direct replacement for gearboxes found on many popular agricultural implements. Compatible implement brands include (referenced for cross-referencing purposes only \u2014 these are not trademark claims):<\/p>\n

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Bush Hog<\/span>
\nJohn Deere<\/span>
\nMassey Ferguson<\/span>
\nLand Pride<\/span>
\nWoods<\/span>
\nRhino<\/span>
\nKing Kutter<\/span>
\nAgri Supply<\/span>
\nToro<\/span>
\nBefco<\/span>\n<\/div>\n

Disclaimer: Brand names are listed solely for cross-reference and compatibility identification. Ever-power Australia PTO Gearbox Co.,Ltd. is not affiliated with or endorsed by the above brands.<\/p>\n

🔎 Selection & Sizing Guide<\/h3>\n

Selecting the correct PTO gearbox for your rotary mower requires matching several key parameters. Use this guide to determine if the EP-1ZS-380 is your ideal fit:<\/p>\n

\n⚙ Matching Gear Ratio to Application<\/summary>\n
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1:1 to 1:1.5 ratio<\/strong> \u2014 Minimal speed reduction; used when the implement blade\/tine speed should closely match PTO speed. Common for finishing mowers and light-duty applications.<\/p>\n

1:1.5 to 1:2 ratio<\/strong> \u2014 Moderate torque increase with proportional speed decrease. Suitable for standard rotary cutters, medium-duty mowers, and general-purpose implements.<\/p>\n

1:2.5 to 1:3+ ratio<\/strong> \u2014 High torque multiplication for heavy loads. Essential for rotary cultivators, post hole diggers, and brush cutters working in dense material.<\/p>\n<\/div>\n<\/details>\n

\n⚡ Matching Tractor HP to Gearbox Power Rating<\/summary>\n
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Always select a gearbox with a rated power (HP) equal to or greater than the maximum PTO output of your tractor. Running a gearbox beyond its rated power causes overheating, accelerated gear wear, and premature failure. As a best practice, maintain a 10-20% safety margin above your actual operating load.<\/p>\n<\/div>\n<\/details>\n

\n🔄 540 RPM vs 1000 RPM \u2014 Which PTO Speed?<\/summary>\n
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540 RPM PTO<\/strong> is the standard for most agricultural implements under 100HP. The EP-1ZS-380 is designed for 540 RPM input. 1000 RPM PTO<\/strong> is used on higher-horsepower tractors (typically 75HP+) and requires a gearbox specifically rated for that speed. Do not connect a 540 RPM gearbox to a 1000 RPM PTO without a speed adapter.<\/p>\n<\/div>\n<\/details>\n

\n🛡 Aluminum vs Cast Iron Housing<\/summary>\n
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Aluminum<\/strong>: Best for compact tractors under 25HP, coastal\/humid environments, and applications where weight matters (finishing mowers, small rotary cutters). Excellent heat dissipation and corrosion resistance.<\/p>\n

\u0e40\u0e2b\u0e25\u0e47\u0e01\u0e2b\u0e25\u0e48\u0e2d<\/strong>: Required for medium-to-heavy duty applications above 25HP. Superior shock resistance and structural rigidity for brush cutting, heavy mowing, cultivating, and post hole digging.<\/p>\n<\/div>\n<\/details>\n

\n🔧 Standard vs Custom Gearbox<\/summary>\n
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Our standard models cover 90% of common agricultural gearbox applications with industry-standard mounting and shaft dimensions. For OEM manufacturers or unique implement designs requiring non-standard ratios, shaft configurations, or mounting patterns, we offer full custom manufacturing with MOQ as low as 50 units. Contact our engineering team<\/a> to discuss your custom requirements.<\/p>\n<\/div>\n<\/details>\n

🌱 Typical Application Scenarios<\/h3>\n

\"EP-1ZS-380<\/p>\n

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Pasture & Paddock Mowing<\/h4>\n

Maintains grazing land at optimal grass height for livestock across large pastoral properties.<\/p>\n<\/div>\n

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Roadside & Verge Cutting<\/h4>\n

Municipal and contractor mowing of highway shoulders, medians, and public land verges.<\/p>\n<\/div>\n

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Orchard Floor Management<\/h4>\n

Under-canopy mowing in fruit orchards to control weed competition and facilitate harvest access.<\/p>\n<\/div>\n

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Brush & Scrub Clearing<\/h4>\n

Heavy rotary cutting of woody brush, saplings, and overgrown vegetation on reclaimed land.<\/p>\n<\/div>\n<\/div>\n

🛠 Installation & Setup Guide<\/h3>\n

Follow these steps to install the EP-1ZS-380 on your implement. Always refer to the included instruction manual for model-specific torque values and safety precautions.<\/p>\n

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  1. Disconnect the PTO shaft from the tractor and secure the mower deck on a flat, stable surface. Ensure the tractor engine is off and PTO is disengaged.<\/li>\n
  2. Remove the old gearbox by unbolting the mounting flange (typically 4 or 6 bolts). Note the orientation of input and output shafts before removal.<\/li>\n
  3. Clean the mounting surface on the mower deck thoroughly. Remove any old gasket material, dirt, or corrosion to ensure a flat, sealed mating surface.<\/li>\n
  4. Position the new EP-1ZS-380 gearbox onto the mounting flange, aligning bolt holes. Insert mounting bolts hand-tight first, then torque to the specification in the installation manual (typically 45-65 Nm).<\/li>\n
  5. Connect the PTO drive shaft to the gearbox input shaft. Ensure the spline engagement is complete and the shear bolt is correctly installed.<\/li>\n
  6. Check that the gearbox oil level is at the level plug. Top up with SAE 90 gear oil if necessary.<\/li>\n
  7. Run the gearbox at low PTO speed for 5 minutes without load to verify smooth operation, correct rotation direction, and absence of unusual noise or vibration.<\/li>\n<\/ol>\n

    ❓ Frequently Asked Questions<\/h3>\n
    \n
    \nDoes this gearbox fit my specific mower brand?<\/summary>\n
    \n

    Our gearboxes are manufactured to match common industry-standard mounting patterns and shaft specifications. Share your current gearbox model number and mower brand with our team for a confirmed fitment check.<\/p>\n<\/div>\n<\/details>\n

    \nWhat warranty is provided?<\/summary>\n
    \n

    Every EP gearbox comes with a 12-month limited warranty covering manufacturing defects in materials and workmanship under normal operating conditions. Extended warranty options are available for fleet and dealer customers.<\/p>\n<\/div>\n<\/details>\n

    \nIs the gearbox shipped with oil?<\/summary>\n
    \n

    Yes, all gearboxes are factory-filled with the correct grade and quantity of gear oil, ready for installation. A spare oil seal kit is also included.<\/p>\n<\/div>\n<\/details>\n

    \nWhat oil should I use in this mower gearbox?<\/summary>\n
    \n

    We recommend SAE 90 or EP90 gear oil for standard operating conditions. For extreme cold climates (below -15°C), use SAE 80W-90 synthetic blend gear oil. Fill to the level plug indicator \u2014 typically 0.8 to 1.2 liters depending on model size.<\/p>\n<\/div>\n<\/details>\n

    \nHow often should I change the gearbox oil?<\/summary>\n
    \n

    Initial oil change after the first 50 hours of operation, then every 200-250 operating hours or annually \u2014 whichever comes first. Check oil level before each use session and top up if needed.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

    💬 Customer Reviews & Field Reports<\/h3>\n
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    \n
    \n\n<\/div>\n
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    ★★★★★<\/div>\n

    “Excellent gearbox \u2014 perfectly matched the bolt pattern on my European mower. The casting quality impressed me; clearly a step up from the cheap replacements I tried before.”<\/p>\n

    \u2014 Jean-Pierre L.<\/span>, Normandy, France<\/p>\n<\/div>\n

    \n
    ★★★★☆<\/div>\n

    “Solid gearbox for the price. Fit my rotary cutter without any drilling or modifications. Only reason for 4 stars is the manual could be more detailed, but the product itself is A+.”<\/p>\n

    \u2014 Carlos R.<\/span>, Texas, USA<\/p>\n<\/div>\n

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    ★★★★★<\/div>\n

    “We operate 12 mowers on our municipal fleet. Switched to EP gearboxes last season and reduced our maintenance downtime by 30%. Outstanding value for professional use.”<\/p>\n

    \u2014 Klaus W.<\/span>, Bavaria, Germany<\/p>\n<\/div>\n

    \n
    ★★★★★<\/div>\n

    “Best PTO gearbox I have used in 15 years of farming. The gear teeth finish is very good and it runs cool even in 45\u00b0C summer heat. Highly recommend to other Indian farmers.”<\/p>\n

    \u2014 Rajesh P.<\/span>, Punjab, India<\/p>\n<\/div>\n

    \n
    ★★★★☆<\/div>\n

    “Bought two units for our sheep station mowers. Good quality build, shipped well-packed. Fitment was exact match for our existing setup. Will order again.”<\/p>\n

    \u2014 Tom H.<\/span>, Canterbury, New Zealand<\/p>\n<\/div>\n

    📈 EP-1ZS-380 vs Economy Gearboxes \u2014 Head-to-Head Comparison<\/h3>\n

    Understanding the true value of the EP-1ZS-380 requires examining how it outperforms budget gearboxes across critical engineering dimensions:<\/p>\n

    \n\n\n\n\n\n\n\n\n\n\n\n\n
    Feature<\/th>\nEP-1ZS-380 (Ever-power)<\/th>\nEconomy Alternative<\/th>\n<\/tr>\n<\/thead>\n
    Gear Material<\/td>\n20CrMnTi Alloy Steel (58-62 HRC)<\/td>\n40Cr or plain carbon steel (45-50 HRC)<\/td>\n<\/tr>\n
    Heat Treatment<\/td>\nCarburizing + Quenching + Tempering<\/td>\nSurface hardening only<\/td>\n<\/tr>\n
    Housing<\/td>\nDuctile Cast Iron (tensile > 450 MPa)<\/td>\nGrey cast iron or recycled aluminum<\/td>\n<\/tr>\n
    Bearings<\/td>\nTapered roller bearings (major brand)<\/td>\nDeep groove ball bearings (unbranded)<\/td>\n<\/tr>\n
    Seals<\/td>\nDouble-lip NBR\/Viton with dust excluder<\/td>\nSingle-lip generic rubber seal<\/td>\n<\/tr>\n
    Transmission Efficiency<\/td>\n96%+<\/td>\n88-92%<\/td>\n<\/tr>\n
    Service Life (estimated)<\/td>\n3,000+ hours<\/td>\n800-1,200 hours<\/td>\n<\/tr>\n
    \u0e01\u0e32\u0e23\u0e23\u0e31\u0e1a\u0e1b\u0e23\u0e30\u0e01\u0e31\u0e19<\/td>\n12 months<\/td>\n3-6 months or none<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    🔗 Related Products & Accessories<\/h3>\n

    \"PTO<\/p>\n

    \n
    \n

    PTO Drive Shafts<\/p>\n

    Wide angle, telescoping, and standard PTO shafts with shear bolt and slip clutch protection.<\/p>\n<\/div>\n

    \n

    Replacement Gears & Bearings<\/p>\n

    OEM-quality spiral bevel gear sets, tapered roller bearings, and oil seal kits for field repairs.<\/p>\n<\/div>\n

    \n

    Sprockets, Pulleys & Chains<\/p>\n

    Agricultural roller chain, sprockets, V-belt pulleys, and timing belt pulleys for implement drives.<\/p>\n<\/div>\n

    \n

    Custom OEM Gearboxes<\/p>\n

    Custom gear ratios, shaft configurations, and housing designs for implement manufacturers (MOQ 50+).<\/p>\n<\/div>\n<\/div>\n

    ➔ Browse our full product catalog<\/a><\/p>\n

    🏆 Certifications & Quality Standards<\/h3>\n
    \n
    \n

    ISO 9001:2015 Certified<\/h4>\n

    Our manufacturing facility operates under a certified ISO 9001:2015 quality management system, ensuring consistent product quality from raw material inspection through final testing.<\/p>\n<\/div>\n

    \n

    Material Test Certificates<\/h4>\n

    Every batch of 20CrMnTi gear steel is accompanied by a mill certificate verifying chemical composition and mechanical properties. Hardness testing reports are available on request.<\/p>\n<\/div>\n

    \n

    100% Factory Tested<\/h4>\n

    Each gearbox undergoes run-in testing, noise measurement, and oil leak inspection before packaging. No unit ships without passing our final QC gate.<\/p>\n<\/div>\n<\/div>\n

    🏭 About Ever-power Australia PTO Gearbox Co.,Ltd.<\/h3>\n

    \"Ever-power<\/p>\n

    We are a specialist manufacturer of agricultural PTO gearboxes, drive shafts, and power transmission components with over 19 years of production experience. Our 3,800 m² facility houses CNC gear hobbing, grinding, and heat treatment lines capable of producing over 50,000 gearbox units annually. More than 95% of our production is exported to Europe, Australia, North America, and Asia, serving both aftermarket distributors and OEM implement manufacturers.<\/p>\n

    We offer full OEM and ODM services \u2014 from custom gear ratio engineering to private-label packaging. Our minimum order quantities start at just 50 units for custom specifications, and we maintain ready stock of popular models for immediate dispatch. Whether you need a single replacement gearbox or a container load for your distribution network, we deliver competitive pricing, consistent quality, and responsive technical support.<\/p>\n

    📞 Ready to Order the EP-1ZS-380? Let’s Talk.<\/h3>\n
    \n

    Whether you need a single replacement unit or bulk OEM supply, our team is ready to assist with product selection, pricing, and fast international shipping. Contact us today for a free quote.<\/p>\n

    ✉ Request a Quote Now<\/a><\/p>\n

    ➔ Visit our homepage for more products<\/a><\/p>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

    Built for professional agricultural use, the EP-1ZS-380 Heavy-Duty Lawn Mower PTO Gearbox<\/strong> transfers tractor PTO power to rotary implements through precision-ground spiral bevel gears. Farmers, landscapers, and agricultural contractors rely on this gearbox for its 100 HP<\/strong> capacity, 1:1.24<\/strong> reduction ratio, and 540 \u0e23\u0e2d\u0e1a\u0e15\u0e48\u0e2d\u0e19\u0e32\u0e17\u0e35<\/strong> rated input. The heat-treated alloy steel gears (58-62 HRC) and double-sealed bearing system ensure extended service life even under heavy loads. This unit fits standard PTO connections and common implement mounting patterns for quick, hassle-free installation.<\/p>","protected":false},"featured_media":1934,"comment_status":"closed","ping_status":"open","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_cat":[1718],"product_tag":[1836,1840,1838,1839,1837],"class_list":{"0":"post-1982","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-lawn-mower-gearboxes","7":"product_tag-100hp-mower-gearbox","8":"product_tag-agricultural-heavy-transmission","9":"product_tag-heavy-duty-pto-drive","10":"product_tag-high-power-rotary-cutter-gearbox","11":"product_tag-spline-output-gearbox","13":"first","14":"instock","15":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/ptogearbox.xyz\/th\/wp-json\/wp\/v2\/product\/1982","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ptogearbox.xyz\/th\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/ptogearbox.xyz\/th\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/ptogearbox.xyz\/th\/wp-json\/wp\/v2\/comments?post=1982"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ptogearbox.xyz\/th\/wp-json\/wp\/v2\/media\/1934"}],"wp:attachment":[{"href":"https:\/\/ptogearbox.xyz\/th\/wp-json\/wp\/v2\/media?parent=1982"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/ptogearbox.xyz\/th\/wp-json\/wp\/v2\/product_cat?post=1982"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/ptogearbox.xyz\/th\/wp-json\/wp\/v2\/product_tag?post=1982"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}