{"id":1466,"date":"2026-03-26T07:47:28","date_gmt":"2026-03-26T07:47:28","guid":{"rendered":"https:\/\/mowergearbox.top\/product\/ep20-100j-01ww-lawn-mower-gearbox\/"},"modified":"2026-03-26T07:47:41","modified_gmt":"2026-03-26T07:47:41","slug":"ep20-100j-01ww-lawn-mower-gearbox","status":"publish","type":"product","link":"https:\/\/mowergearbox.top\/ms\/product\/ep20-100j-01ww-lawn-mower-gearbox\/","title":{"rendered":"EP20.100J.01WW Lawn Mower Gearbox"},"content":{"rendered":"
\n
\n<\/p>\n

EP20.100J.01WW \u2014 Professional-Grade High-Power Compact Gearbox for Agricultural Mowing<\/h2>\n

The EP20.100J.01WW<\/strong> is a purpose-engineered lawn mower gearbox<\/a> delivering reliable right-angle power transmission at 100 \/ 120 HP<\/strong> with 540 rpm<\/strong> PTO input. Its spiral bevel gears and sealed construction ensure consistent performance across thousands of operating hours in demanding field conditions.<\/p>\n

\"EP20.100J.01WW<\/div>\n

📈 EP20.100J.01WW Technical Specifications<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
Model Number<\/td>\nEP20.100J.01WW<\/td>\n<\/tr>\n
Gearbox Type<\/td>\nHigh-Power Compact Gearbox<\/td>\n<\/tr>\n
Gear Ratio(s)<\/td>\n1:1<\/td>\n<\/tr>\n
Teeth Configuration<\/td>\n15\/15<\/td>\n<\/tr>\n
Gear Module<\/td>\n5.4<\/td>\n<\/tr>\n
Rated Power<\/td>\n100 \/ 120 HP<\/td>\n<\/tr>\n
Input Speed<\/td>\n540 rpm<\/td>\n<\/tr>\n
Input\/Output Shaft<\/td>\n1 3\/8 Z6<\/td>\n<\/tr>\n
Net Weight<\/td>\n16 Kg<\/td>\n<\/tr>\n
Gear Material<\/td>\n20CrMnTi Alloy Steel, Carburized & Hardened HRC 58-62<\/td>\n<\/tr>\n
Housing Material<\/td>\nGrey Cast Iron (HT200\/HT250)<\/td>\n<\/tr>\n
Seal Protection<\/td>\nMulti-Lip NBR\/FKM Oil Seals, IP65+ Rated<\/td>\n<\/tr>\n
Lubrication<\/td>\nSAE 80W-90 or 85W-140 EP Gear Oil<\/td>\n<\/tr>\n
Surface Treatment<\/td>\nE-Coat Primer + Polyester Powder Coat, Red Finish<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

⭐ Key Features & Engineering Advantages<\/h2>\n
\n
\n

🔄<\/p>\n

Magnetic Drain Plug<\/h4>\n

Neodymium drain plug captures ferrous wear particles from break-in and normal operation, protecting gears and bearings from abrasive recirculation damage.<\/p>\n<\/div>\n

\n

🔨<\/p>\n

High-Capacity Oil Sump Design<\/h4>\n

30% larger oil volume compared to standard models, reducing operating temperature by 8-12 \u00b0C during sustained high-load mowing and extending lubricant life.<\/p>\n<\/div>\n

\n

🌡<\/p>\n

Split-Line O-Ring Seal<\/h4>\n

Precision-machined housing split line with fluorocarbon O-ring eliminates the gasket creep and re-torque requirements of traditional paper or RTV gasket joints.<\/p>\n<\/div>\n

\n

🛠<\/p>\n

Low-Backlash Preloaded Assembly<\/h4>\n

Bearing preload and controlled gear mesh clearance hold total backlash below 0.08 mm, critical for reversing-load applications and precision-cut implements.<\/p>\n<\/div>\n

\n

🔬<\/p>\n

Redundant Lubrication Groove System<\/h4>\n

Machined oil distribution grooves in the housing bore supplement splash lubrication, providing a secondary oil path to bearings if sump level drops slightly below specification.<\/p>\n<\/div>\n

\n

⚖<\/p>\n

Reinforced Grey Cast Iron Housing<\/h4>\n

HT250-grade grey iron casing with 14 mm wall thickness, ribbed for vibration damping and thermal dissipation, resisting cracking from rock strikes at mowing speed.<\/p>\n<\/div>\n<\/div>\n

\"Mower<\/div>\n

🔧 Equipment Compatibility & Cross-Reference<\/h2>\n
\n

🔄 Cross-Reference Compatibility for EP20.100J.01WW<\/h3>\n

The EP20.100J.01WW is engineered as a direct replacement or upgrade for gearboxes fitted to equipment from leading manufacturers including:<\/p>\n

Case IH • Land Pride • Mahindra • P\u00f6ttinger • TAFE • McCormick • Mitsubishi • Zoomlion<\/p>\n

Disclaimer: Brand names above are referenced solely for compatibility identification. Ever-power Australia Mower Gearbox Co.,Ltd. is not affiliated with, endorsed by, or authorized by any listed manufacturer. All trademarks belong to their respective owners.<\/p>\n<\/div>\n

📚 Gearbox Selection Guide<\/h2>\n

Choosing the right mower gearbox is critical for implement performance and longevity. Use the following criteria when evaluating the EP20.100J.01WW:<\/p>\n

\n📌 Matching Gear Ratio to Blade Tip Speed<\/summary>\n
For the EP20.100J.01WW with ratio(s) 1:1, calculate your required blade tip speed: typically 4,500-5,500 m\/min for standard rotary cutters, 3,000-4,000 m\/min for heavy brush cutting, and 5,500-6,500 m\/min for fine finish mowing. Output RPM = PTO RPM \u00f7 ratio. Multiply by blade diameter to get tip speed.<\/div>\n<\/details>\n
\n📌 Sizing Power Rating to Tractor PTO HP<\/summary>\n
The EP20.100J.01WW is rated at 100 \/ 120 HP. Always select a gearbox rated at or above your tractor’s maximum PTO horsepower. For shock-load applications (mulching, brush clearing), add a 25-30% safety margin: a 60 HP tractor should use a 75+ HP rated gearbox.<\/div>\n<\/details>\n
\n📌 540 RPM vs 1000 RPM PTO Selection<\/summary>\n
The EP20.100J.01WW 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 \u2014 the doubled speed will destroy bearings and gears within minutes.<\/div>\n<\/details>\n
\n📌 Cast Iron Housing vs Aluminium Housing<\/summary>\n
The EP20.100J.01WW uses a grey cast iron housing. Cast iron excels in vibration damping, impact resistance, and heat dissipation \u2014 ideal for rough, rocky mowing conditions. Aluminium is lighter and more corrosion-resistant, better suited to wet environments and weight-sensitive implements.<\/div>\n<\/details>\n
\n📌 Standard Catalog vs Custom Specification<\/summary>\n
The EP20.100J.01WW 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.<\/div>\n<\/details>\n

🌾 Typical Application Scenarios<\/h2>\n
\n
\n

🌾 Airfield perimeter and runway strip grass management<\/p>\n<\/div>\n

\n

🚘 Sugar cane and crop stubble field mulching<\/p>\n<\/div>\n

\n

🌱 Dairy farm laneway and yard surround maintenance<\/p>\n<\/div>\n

\n

⛰ Conservation tillage and minimum-disturbance cultivation<\/p>\n<\/div>\n

\n

🌳 Railway corridor vegetation control programs<\/p>\n<\/div>\n<\/div>\n

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

🛠 Installation & Setup Guide<\/h2>\n
    \n
  1. Ensure the PTO shaft has at least 50% spline overlap in all operating positions. Inadequate overlap causes rapid spline wear and potential shaft separation.<\/li>\n
  2. Record the installation date, tractor hour meter reading, and gearbox serial number in your maintenance log for warranty and service interval tracking.<\/li>\n
  3. If replacing an existing unit, drain the old oil completely, remove mounting fasteners, and carefully lower the old gearbox. Photograph the orientation and note any shim washers used.<\/li>\n
  4. Insert all mounting bolts finger-tight first, then torque to specification in a cross (star) pattern to ensure even clamping. Typical torque: 80-120 Nm depending on bolt size.<\/li>\n
  5. With the implement raised and blades clear of the ground, engage the PTO at low idle speed. Listen for any unusual noise and observe for vibration or oil leaks.<\/li>\n
  6. Verify that the mower implement safety chain or restraint is properly connected to prevent the gearbox from contacting the ground if the three-point hitch fails.<\/li>\n
  7. Apply a thin, even bead of RTV silicone sealant to the mounting flange face if a pre-cut gasket is not included with the new gearbox.<\/li>\n<\/ol>\n

    ❓ Frequently Asked Questions<\/h2>\n
    \n
    \n❓ What is the lead time for standard models?<\/summary>\n
    \n

    In-stock standard models ship within 3-5 business days. For models requiring custom ratios or configurations, typical lead time is 4-6 weeks. Rush production is available for urgent requirements.<\/p>\n<\/div>\n<\/details>\n

    \n❓ How do I select the right gear ratio?<\/summary>\n
    \n

    Match the ratio to your blade tip speed target. Lower ratios (e.g. 1:1) give higher blade RPM for finish mowing; higher ratios (e.g. 1:1.93 or above) trade speed for torque, ideal for thick brush. Calculate: output RPM = input RPM \u00f7 ratio.<\/p>\n<\/div>\n<\/details>\n

    \n❓ What is the expected operational lifespan?<\/summary>\n
    \n

    With proper maintenance, our gearboxes typically deliver 3,000 to 5,000 operating hours. Many units in the field have exceeded 6,000 hours. Lifespan depends on operating load, maintenance compliance, and field conditions.<\/p>\n<\/div>\n<\/details>\n

    \n❓ Is this suitable for mulching applications?<\/summary>\n
    \n

    Yes. Our gearboxes are widely used on mulching mowers and brush cutters. For mulching, select a model rated 25-30% above your actual PTO horsepower to provide a safety margin against the intermittent shock loads typical of mulching.<\/p>\n<\/div>\n<\/details>\n

    \n❓ What quality inspections do you perform?<\/summary>\n
    \n

    Every gearbox undergoes 100% dimensional inspection (CMM), gear tooth geometry verification (Gleason analyzer), hardness testing, oil-leak testing, and no-load run-in testing before shipment.<\/p>\n<\/div>\n<\/details>\n<\/div>\n

    ⭐ Customer Reviews & Field Reports<\/h2>\n
    <\/p>\n
    <\/div>\n
    \n
    \n

    Colin P.<\/p>\n

    ★★★★★<\/p>\n<\/div>\n

    📍 Tasmania, Australia<\/p>\n

    The cooling fin design is a real bonus. Saves us time in the workshop and lets us spend more hours in the paddock. Great design.<\/p>\n<\/div>\n

    \n
    \n

    Javier R.<\/p>\n

    ★★★★★<\/p>\n<\/div>\n

    📍 Castilla, Spain<\/p>\n

    Oil change was simple thanks to the drain and fill locations being well-positioned. Small details like this show engineering thought.<\/p>\n<\/div>\n

    \n
    \n

    Roberto C.<\/p>\n

    ★★★★★<\/p>\n<\/div>\n

    📍 Mendoza, Argentina<\/p>\n

    We needed a gearbox fast after a mid-season failure. This arrived in 5 days, bolted on in an hour, and has been perfect since.<\/p>\n<\/div>\n

    \n
    \n

    Hans B.<\/p>\n

    ★★★★☆<\/p>\n<\/div>\n

    📍 Bavaria, Germany<\/p>\n

    Bolt pattern matched my slasher perfectly. Quieter than the original gearbox it replaced and the oil stays clean much longer between changes.<\/p>\n<\/div>\n

    \n
    \n

    George K.<\/p>\n

    ★★★★☆<\/p>\n<\/div>\n

    📍 Thessaly, Greece<\/p>\n

    Installed on our rotary cutter for sugarcane\/crop field work. Oil seal quality is excellent \u2014 no leakage despite dusty and humid conditions.<\/p>\n<\/div>\n<\/div>\n

    \"Agricultural<\/div>\n

    ⚖ EP20.100J.01WW vs. Low-Cost Alternatives<\/h2>\n
    \n\n\n\n\n\n\n\n\n\n\n\n
    Feature<\/th>\nEP20.100J.01WW (Ever-power)<\/th>\nGeneric \/ Low-Cost Alternative<\/th>\n<\/tr>\n<\/thead>\n
    After-Sales Support<\/td>\n✔ Dedicated Technical Team, Video Call Support<\/td>\n✘ Email Only, 1-2 Week Response Time<\/td>\n<\/tr>\n
    Engineering Support<\/td>\n✔ Free Application Engineering & Cross-Reference<\/td>\n✘ No Technical Support Provided<\/td>\n<\/tr>\n
    Oil Seals<\/td>\n✔ Double-Lip NBR\/FKM, IP65 Rated<\/td>\n✘ Single-Lip NBR, No Dust Lip<\/td>\n<\/tr>\n
    Dimensional Tolerance<\/td>\n✔ ISO IT6-IT7, CNC Machined Throughout<\/td>\n✘ ISO IT9-IT10, Partially Hand-Finished<\/td>\n<\/tr>\n
    Documentation<\/td>\n✔ Full Drawings, Cross-Reference, Install Guide<\/td>\n✘ Basic Single-Page Spec Sheet Only<\/td>\n<\/tr>\n
    Fastener Protection<\/td>\n✔ Zinc-Flake Coated Grade 10.9 Bolts<\/td>\n✘ Plain Steel Grade 8.8, Corrodes and Seizes<\/td>\n<\/tr>\n
    Oil Level Check<\/td>\n✔ Clear Sight Glass + Dipstick Standard<\/td>\n✘ No Sight Glass, Must Remove Fill Plug<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    🔄 Related Products & Accessories<\/h2>\n
    \n

    \n\"PTO<\/p>\n
    \n

    PTO Drive Shafts<\/p>\n

    Match your gearbox with a heavy-duty PTO shaft for complete driveline reliability.<\/p>\n<\/div>\n

    <\/a>
    \n\"Agricultural<\/p>\n

    \n

    Agricultural Gearbox Range<\/p>\n

    Explore our full catalog of agricultural gearboxes for every implement type.<\/p>\n<\/div>\n

    <\/a>
    \n\"Replacement<\/p>\n

    \n

    Replacement Gear Sets & Sprockets<\/p>\n

    Keep your equipment running with precision-manufactured spare gears and sprockets.<\/p>\n<\/div>\n

    <\/a><\/div>\n

    Browse our complete range of agricultural transmission components<\/a> including PTO shafts, gears, pulleys, chains, and sprockets \u2014 all engineered to integrate seamlessly with EP20.100J.01WW gearboxes.<\/p>\n<\/div>\n

    🏆 Certifications & Quality Standards<\/h2>\n

    Our manufacturing facility holds ISO 9001:2015 quality management and ISO 14001:2015 environmental management certifications. All gear steel is supplied with EN 10204 Type 3.1 mill test certificates. Heat treatment processes are monitored per CQI-9 (Special Process: Heat Treat System Assessment). Every EP20.100J.01WW undergoes 100% dimensional inspection and functional testing before shipment.<\/p>\n

    🏭 Why Choose Ever-power Australia Mower Gearbox Co.,Ltd.?<\/h2>\n

    At Ever-power Australia Mower Gearbox Co.,Ltd., we have invested over two decades building one of the most advanced agricultural gearbox production facilities in the Asia-Pacific region. Our 26000 m\u00b2 campus integrates in-house forging, CNC gear cutting, automated heat treatment, precision grinding, and assembly under one roof \u2014 giving us end-to-end quality control that outsourced manufacturers simply cannot match. We produce 73000 gearbox units annually, serving OEM partners and distributors across 48+ countries on six continents, with particular strength in the Australian, North American, and European markets.<\/p>\n

    \"PTO<\/div>\n
    \n

    📞 Get Your EP20.100J.01WW Quote Today<\/h3>\n

    Ready to boost your mowing productivity with the EP20.100J.01WW? Our application engineers can match this gearbox to your specific tractor and implement \u2014 get a tailored recommendation today.<\/p>\n

    Request a Quote<\/a>Browse All Products<\/a><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

    Despite weighing only 16 kg, the EP20.100J.01WW handles 100-120 HP through its 1:1 ratio and module 5.4 gear set \u2014 an industry-leading power-to-weight ratio. High-performance mower OEMs and racing-turf maintenance teams specify this model when minimum implement weight is as critical as maximum power throughput.<\/p>","protected":false},"featured_media":1403,"comment_status":"closed","ping_status":"open","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[3074],"product_tag":[3166,3205,3109,3207,3206],"class_list":{"0":"post-1466","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-mower-gearbox","7":"product_tag-11-ratio-pto-gearbox","8":"product_tag-100hp-compact-mower-gearbox","9":"product_tag-compact-agricultural-gearbox","10":"product_tag-high-efficiency-mower-drive","11":"product_tag-lightweight-high-power-gearbox","13":"first","14":"instock","15":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/mowergearbox.top\/ms\/wp-json\/wp\/v2\/product\/1466","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mowergearbox.top\/ms\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/mowergearbox.top\/ms\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/mowergearbox.top\/ms\/wp-json\/wp\/v2\/comments?post=1466"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mowergearbox.top\/ms\/wp-json\/wp\/v2\/media\/1403"}],"wp:attachment":[{"href":"https:\/\/mowergearbox.top\/ms\/wp-json\/wp\/v2\/media?parent=1466"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/mowergearbox.top\/ms\/wp-json\/wp\/v2\/product_brand?post=1466"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/mowergearbox.top\/ms\/wp-json\/wp\/v2\/product_cat?post=1466"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/mowergearbox.top\/ms\/wp-json\/wp\/v2\/product_tag?post=1466"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}