{"id":1433,"date":"2026-03-26T07:42:41","date_gmt":"2026-03-26T07:42:41","guid":{"rendered":"https:\/\/mowergearbox.top\/product\/ep-rc31-lawn-mower-gearbox\/"},"modified":"2026-03-26T07:42:42","modified_gmt":"2026-03-26T07:42:42","slug":"ep-rc31-lawn-mower-gearbox","status":"publish","type":"product","link":"https:\/\/mowergearbox.top\/id\/product\/ep-rc31-lawn-mower-gearbox\/","title":{"rendered":"EP-RC31 Lawn Mower Gearbox"},"content":{"rendered":"
\n
\n<\/p>\n

EP-RC31 \u2014 Professional-Grade Rotary Cutter Gearbox for Agricultural Mowing<\/h2>\n

The EP-RC31<\/strong> is a purpose-engineered girboks mesin pemotong rumput<\/a> delivering reliable right-angle power transmission at 30 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

\"EP-RC31<\/div>\n

📈 EP-RC31 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>\nSpesifikasi<\/th>\n<\/tr>\n<\/thead>\n
Model Number<\/td>\nEP-RC31<\/td>\n<\/tr>\n
Gearbox Type<\/td>\nRotary Cutter Gearbox<\/td>\n<\/tr>\n
Gear Ratio(s)<\/td>\n1:1.46 \/ 1:1.69 \/ 1:1.93 \/ 1:2.3<\/td>\n<\/tr>\n
Teeth Configuration<\/td>\n22\/15, 22\/13, 29\/15, 28\/12<\/td>\n<\/tr>\n
Gear Module<\/td>\n5.08 \/ 5.0 \/ 4.0 \/ 4.0<\/td>\n<\/tr>\n
Rated Power<\/td>\n30 HP<\/td>\n<\/tr>\n
Input Speed<\/td>\n540 rpm<\/td>\n<\/tr>\n
Input\/Output Shaft<\/td>\n3\/8 Z6 \/ Optic axis \/ Taper spline<\/td>\n<\/tr>\n
Berat Bersih<\/td>\n21.5 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

CNC-Machined Spiral Bevel Gears<\/h4>\n

Gears cut from 20CrMnTi alloy on Gleason CNC generators, case-carburized to HRC 58-62 with 1.2 mm case depth for 10+ million cycle fatigue life under rated torque.<\/p>\n<\/div>\n

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⚗<\/p>\n

96-98% Power Transmission Efficiency<\/h4>\n

Precision-lapped tooth contact patterns reduce mesh friction losses to under 4%, delivering near-full PTO horsepower to the blade assembly with minimal heat build-up.<\/p>\n<\/div>\n

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🔒<\/p>\n

Pre-Filled EP90 Gear Lubricant<\/h4>\n

Ships factory-filled with extreme-pressure SAE 90 gear oil and includes a clear sight glass for instant oil-level verification before each operating session.<\/p>\n<\/div>\n

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⚡<\/p>\n

QT450-10 Ductile Iron Shell<\/h4>\n

Nodular graphite iron housing absorbs 40% more impact energy than grey iron, protecting internal components when the mower strikes concealed rocks or fence posts.<\/p>\n<\/div>\n

\n

🔄<\/p>\n

Dual 540\/1000 RPM Configurability<\/h4>\n

Input shaft and gear set available in both 540 RPM and 1000 RPM PTO configurations, covering the full range of modern tractor PTO standards from a single product family.<\/p>\n<\/div>\n

\n

🔨<\/p>\n

Rapid-Release Blade Flange<\/h4>\n

Quick-disconnect output flange with self-centering pilot reduces blade swap time to under 10 minutes, cutting maintenance downtime by 60% versus bolted hubs.<\/p>\n<\/div>\n<\/div>\n

\"Mower<\/div>\n

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

🔄 Cross-Reference Compatibility for EP-RC31<\/h3>\n

The EP-RC31 is engineered as a direct replacement or upgrade for gearboxes fitted to equipment from leading manufacturers including:<\/p>\n

John Deere • AGCO • Rhino • LS Tractor • Fella • Sonalika • Branson • Dongfeng<\/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 EP-RC31:<\/p>\n

\n📌 Matching Gear Ratio to Blade Tip Speed<\/summary>\n
For the EP-RC31 with ratio(s) 1:1.46 \/ 1:1.69 \/ 1:1.93 \/ 1:2.3, 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 EP-RC31 is rated at 30 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 EP-RC31 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 EP-RC31 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 EP-RC31 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

🌾 Rotary cutting of improved pasture on dairy and beef farms<\/p>\n<\/div>\n

\n

🚘 Solar farm ground cover and weed management<\/p>\n<\/div>\n

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🌱 Firebreak establishment and maintenance mowing<\/p>\n<\/div>\n

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⛰ Disc mowing of grass and legume hay crops<\/p>\n<\/div>\n

\n

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

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

🛠 Installation & Setup Guide<\/h2>\n
    \n
  1. Clean the implement mounting surface thoroughly, removing all rust, old gasket material, paint flakes, and debris that could prevent flush contact with the gearbox flange.<\/li>\n
  2. Position the gearbox onto the mounting studs or bolt holes, verifying the input shaft faces the tractor PTO and the output shaft aligns with the blade hub or rotor.<\/li>\n
  3. 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
  4. Record the installation date, tractor hour meter reading, and gearbox serial number in your maintenance log for warranty and service interval tracking.<\/li>\n
  5. 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
  6. 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
  7. 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<\/ol>\n

    ❓ Frequently Asked Questions<\/h2>\n
    \n
    \n❓ What gear oil specification does this gearbox require?<\/summary>\n
    \n

    Use SAE 80W-90 or SAE 85W-140 GL-5 extreme-pressure gear oil under normal conditions. For sub-zero climates below -20 \u00b0C, a synthetic 75W-90 ensures proper cold-start flow. Always check the sight glass or dipstick before each shift.<\/p>\n<\/div>\n<\/details>\n

    \n❓ Which tractor brands are compatible?<\/summary>\n
    \n

    Our gearboxes use standard PTO connections (1 3\/8″ 6-spline or 1 3\/4″ 20-spline) compatible with virtually every brand \u2014 John Deere, Kubota, Massey Ferguson, New Holland, Case IH, Kioti, Mahindra, and more.<\/p>\n<\/div>\n<\/details>\n

    \n❓ How noisy is this gearbox during operation?<\/summary>\n
    \n

    Our spiral bevel designs produce 72-78 dB(A) at 1 metre under rated load \u2014 significantly quieter than straight-bevel alternatives (typically 82-88 dB). Operators notice a meaningful reduction in gear whine.<\/p>\n<\/div>\n<\/details>\n

    \n❓ What is the difference between ratio options?<\/summary>\n
    \n

    Ratio determines the speed\/torque trade-off at the output. 1:1 maintains PTO speed (high blade RPM); 1:1.93 nearly halves output speed while doubling torque. Choose based on your target blade tip speed and vegetation density.<\/p>\n<\/div>\n<\/details>\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<\/div>\n

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

    John M.<\/p>\n

    ★★★★★<\/p>\n<\/div>\n

    📍 Queensland, Australia<\/p>\n

    Fitted to my rotary cutter last season. Over 400 hours and counting \u2014 zero leaks, minimal noise. Excellent value for a professional-grade unit.<\/p>\n<\/div>\n

    \n
    \n

    Fernando M.<\/p>\n

    ★★★★★<\/p>\n<\/div>\n

    📍 Jalisco, Mexico<\/p>\n

    Running it on a 40-50 HP tractor through rocky paddocks. Handles rocks and rough ground without complaint. Very impressed with the build.<\/p>\n<\/div>\n

    \n
    \n

    Piotr N.<\/p>\n

    ★★★★★<\/p>\n<\/div>\n

    📍 Lublin, Poland<\/p>\n

    Purchased two units for our operation. Consistent quality between both units, which tells me their factory QC is solid. Will buy again.<\/p>\n<\/div>\n

    \n
    \n

    Luca V.<\/p>\n

    ★★★★☆<\/p>\n<\/div>\n

    📍 Tuscany, Italy<\/p>\n

    Replaced a failed OEM unit on a 15-year-old mower. This new gearbox is actually smoother and quieter than the original ever was.<\/p>\n<\/div>\n

    \n
    \n

    Rajesh P.<\/p>\n

    ★★★★☆<\/p>\n<\/div>\n

    📍 Punjab, India<\/p>\n

    Best aftermarket unit I have used in 20+ years of farming. Bolt holes aligned first try. Oil sight glass is a thoughtful touch.<\/p>\n<\/div>\n<\/div>\n

    \"Agricultural<\/div>\n

    ⚖ EP-RC31 vs. Low-Cost Alternatives<\/h2>\n
    \n\n\n\n\n\n\n\n\n\n\n\n
    Feature<\/th>\nEP-RC31 (Ever-power)<\/th>\nGeneric \/ Low-Cost Alternative<\/th>\n<\/tr>\n<\/thead>\n
    Gear Material<\/td>\n✔ 20CrMnTi Forged Alloy Steel, Carburized HRC 58-62<\/td>\n✘ 45# Carbon Steel, Surface Hardened HRC 40-45<\/td>\n<\/tr>\n
    Warranty<\/td>\n✔ 12-Month Full Manufacturer Warranty<\/td>\n✘ 3-6 Month Limited Warranty<\/td>\n<\/tr>\n
    Seal Longevity<\/td>\n✔ FKM\/Viton Seals, 2000+ Hour Service Life<\/td>\n✘ NBR Seals, 500-800 Hours Before Leaking<\/td>\n<\/tr>\n
    Breather<\/td>\n✔ Labyrinth Stainless Steel Breather Valve<\/td>\n✘ Simple Open Vent Hole, Allows Water Entry<\/td>\n<\/tr>\n
    Gear Forging Method<\/td>\n✔ Closed-Die Forged, Grain-Flow Aligned<\/td>\n✘ Open-Die Forged or Cast, Weak Grain Structure<\/td>\n<\/tr>\n
    Cooling Design<\/td>\n✔ Machined External Cooling Fins, 35% More Area<\/td>\n✘ Smooth Housing, Poor Heat Dissipation<\/td>\n<\/tr>\n
    Output Flange<\/td>\n✔ Forged Steel, Heat-Treated HRC 28-32<\/td>\n✘ Cast Iron, Untreated, Prone to Cracking<\/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 EP-RC31 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 EP-RC31 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 12000 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 45000 gearbox units annually, serving OEM partners and distributors across 35+ countries on six continents, with particular strength in the Australian, North American, and European markets.<\/p>\n

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

    📞 Get Your EP-RC31 Quote Today<\/h3>\n

    Ready to boost your mowing productivity with the EP-RC31? 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":"

    The EP-RC31 is a four-ratio rotary cutter gearbox delivering 30 HP through hardened spiral bevel gears. Ideal for hobby farmers and small property owners who need a versatile, cost-effective gearbox to handle pasture mowing, light brush clearing, and seasonal vegetation management with a single compact unit.<\/p>","protected":false},"featured_media":1399,"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":[3077,3078,3079,3076,3075],"class_list":{"0":"post-1433","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-mower-gearbox","7":"product_tag-30hp-mower-gearbox","8":"product_tag-540-rpm-gearbox","9":"product_tag-agricultural-right-angle-gearbox","10":"product_tag-lawn-mower-gearbox","11":"product_tag-rotary-cutter-gearbox","13":"first","14":"instock","15":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/mowergearbox.top\/id\/wp-json\/wp\/v2\/product\/1433","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mowergearbox.top\/id\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/mowergearbox.top\/id\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/mowergearbox.top\/id\/wp-json\/wp\/v2\/comments?post=1433"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mowergearbox.top\/id\/wp-json\/wp\/v2\/media\/1399"}],"wp:attachment":[{"href":"https:\/\/mowergearbox.top\/id\/wp-json\/wp\/v2\/media?parent=1433"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/mowergearbox.top\/id\/wp-json\/wp\/v2\/product_brand?post=1433"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/mowergearbox.top\/id\/wp-json\/wp\/v2\/product_cat?post=1433"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/mowergearbox.top\/id\/wp-json\/wp\/v2\/product_tag?post=1433"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}