Premium PTO Gearbox Manufacturer
Ever-Power designs, manufactures, and exports high-performance PTO gearboxes and agricultural gearboxes for every application — from rotary cutters and flail mowers to round balers and fertilizer spreaders. ISO 9001 certified, 50+ countries served, 500+ gearbox models available.
Popular PTO Gearbox for Sale
Our most requested agricultural gearbox models, engineered for demanding farm operations worldwide. Each PTO gearbox is precision-machined, dyno-tested, and backed by full engineering support.
EP RC-30 Rotary Cutter Gearbox
The EP RC-30 is our flagship gearbox for rotary cutters, engineered for heavy brush cutting and pasture maintenance. Features hardened spiral bevel gears, double-lip oil seals, and a cast iron housing rated for continuous field operation. Direct replacement for major OEM brands with identical mounting patterns.
Feed Mixer Gearbox EP Series
Purpose-built PTO drive gearbox for vertical and horizontal feed mixers. This agricultural gearbox handles extreme torque loads from dense TMR rations with its planetary-helical gear train and heavy-duty thrust bearings. Available in single, dual, and triple auger configurations.
Fertilizer Spreader Gearbox L-150C
Designed specifically as a fertilizer spreader gearbox with corrosion-resistant housing and sealed input shaft to prevent chemical ingress. This pto gear reducer features a right-angle bevel gear set with precision-lapped tooth contact for smooth, quiet operation across variable PTO speeds.
Flail Mower Gearbox T-310A
The T-310A flail mower gearbox delivers reliable high-speed output for vegetation management, roadside maintenance, and orchard clearing. Engineered with case-hardened spiral bevel gears and mechanical face seal technology that eliminates oil leakage even under severe vibration from flail impact.
Round Baler Gearbox EP2100-T3
Heavy-duty round baler gearbox with multi-stage gear reduction for consistent bale formation under peak harvest loads. The EP2100-T3 agricultural gearbox features oversize tapered roller bearings, a high-capacity oil sump for extended field run times, and universal mounting compatibility with major baler platforms.
Rotary Mower Gearbox LF-199A
Compact yet powerful rotary mower gearbox optimized for commercial turf and mid-duty agricultural mowing. The LF-199A tractor PTO gearbox uses precision-ground helical gears for ultra-quiet operation, making it ideal for residential and parkland mowing where gearbox noise and vibration must be minimized.
Types of Agricultural PTO Gearbox
We manufacture a full spectrum of PTO gearbox types for every category of farm implement. Whether you need a gearbox for rotary cutters, a flail mower gearbox, a rotary tiller gearbox, or PTO speed increaser gearboxes — our product line covers all mainstream and specialty agricultural applications.
Rotary Cutter Gearbox
Right-angle spiral bevel design for brush and pasture mowing. 540 RPM input, up to 75 HP, cast iron housing with double-lip seals.
Flail Mower Gearbox
Shock-resistant gearbox with mechanical face seals for high-speed flail impact. Supports 540/1000 RPM, ideal for roadside vegetation management.
Rotary Mower Gearbox
Helical gear set for ultra-quiet turf and parkland mowing. Compact aluminum housing option, 540 RPM, up to 60 HP capacity.
Round Baler Gearbox
Multi-stage helical-bevel reduction with oversize tapered roller bearings. High-capacity oil sump for extended harvest run times, up to 120 HP.
Square Baler Gearbox
Heavy-duty flywheel-driven gearbox engineered for cyclic baling loads. Hardened gear teeth and reinforced output shaft for continuous operation.
Rotary Tiller Gearbox
Spiral bevel drive for soil tillage and seedbed preparation. 1:1.46 ratio, cast iron housing, rated up to 80 HP with sealed input shaft.
Fertilizer Mixer Gearbox
Planetary-helical gear train for high-torque blending. Handles dense fertilizer compounds, available in single and dual output shaft configurations.
Fertilizer Seeder Gearbox
Precision metering gearbox for controlled seed and fertilizer distribution. Low-ratio drive with anti-corrosion coated housing for chemical resistance.
Lawn Mower Gearbox
Lightweight design with noise-dampened helical gears for residential and commercial mowing. Quick-change blade coupling and sealed bearings.
Irrigation Gearbox
Center pivot and linear drive gearbox with weather-sealed enclosure. Designed for continuous outdoor operation with minimal maintenance intervals.
Hydraulic Drive Gearbox
Speed increaser converting PTO power to high-RPM hydraulic pump drive. Ratios from 1:2 to 1:6, aluminum housing, up to 100 HP rated.
Combine Harvester Gearbox
Multi-output gearbox driving header, threshing, and separation systems simultaneously. Engineered for peak harvest loads with thermal protection.
Potato Harvester Gearbox
Dirt-and-moisture-resistant gearbox for root crop harvesting. Features reinforced shaft seals and protective housing for harsh field conditions.
Cutter Bars Gearbox
Oscillating drive gearbox for sickle-bar and disc mower cutter systems. Precision-machined eccentric mechanism for smooth reciprocating motion.
Rotary Rakes Gearbox
Multi-rotor synchronized drive gearbox for hay and forage raking. Low-speed high-torque output with grease-lubricated bevel gear sets.
Grader Driven Rake Gearbox
Ground-speed-driven gearbox for wheel rakes and belt rakes. Variable output speed proportional to ground travel for consistent windrow formation.
Agricultural Sprayer Gearbox
Chemical-resistant gearbox for crop sprayer pump drives. Stainless hardware, PTFE shaft seals, and corrosion-proof coating for long service life.
PTO Gearbox & PTO Shaft Assembly
Complete power transmission kits with matched gearbox and PTO shaft. Pre-assembled and dyno-tested for plug-and-play installation on any tractor.
Agricultural Gearbox Applications
Every PTO gearbox we manufacture is application-engineered for its target equipment. From lawn mowers and post hole diggers to hydraulic PTO gearbox systems and PTO speed increaser gearboxes for hydraulic pumps — our agricultural gearboxes are at work across dozens of industries and field conditions worldwide.
Why Choose Ever-Power PTO Gearboxes
From raw material procurement to final dyno testing, every agricultural gearbox is manufactured under strict quality protocols in our own production facility. Here's why OEMs and dealers across 50+ countries trust Ever-Power for their PTO gearbox supply.
Global OEM Supply
Supplying PTO gearbox assemblies to equipment manufacturers in 50+ countries with localized packaging, multi-language documentation, and customs clearance support.
ISO 9001 & ISO 500
Every agricultural gearbox meets ISO 9001:2015 quality standards and agricultural gearbox ISO 500 standards for PTO interface dimensions, speeds, and safety guard clearances.
100% Dyno Testing
Every PTO gearbox is run-in tested on our dynamometer rigs to verify torque output, gear mesh pattern, oil sealing, bearing temperature, and gearbox noise and vibration levels before shipment.
500+ Gearbox Models
From a compact pto gear reducer for post hole diggers to heavy-duty PTO speed increaser gearboxes for hydraulic pumps — we carry over 500 standard and custom models.
Fast Lead Times
Stock PTO gearbox models ship in 3–5 days. Custom agricultural gearbox orders typically deliver within 15–25 working days with full quality traceability documentation.
In-House Engineering
Our mechanical engineers design custom PTO gearbox solutions using Solidworks and ANSYS FEA simulation. We modify gear ratios, housing geometry, and shaft configurations to your exact requirements.
24h Quote Response
Submit your pto gearbox for sale inquiry by email and receive a detailed engineering quotation within 24 hours — including 2D drawings, material specs, and delivery timeline.
Dedicated Account Support
Each OEM client receives a dedicated account engineer who manages your orders from initial PTO gearbox design through production, inspection, and shipment coordination.
Korea's Leading PTO Gearbox & Agricultural Gearbox Manufacturer
Korea Ever-Power PTO Gearbox Co., Ltd is a vertically integrated manufacturer specializing in the design, production, and global distribution of PTO gearboxes for agricultural, industrial, and marine applications. Located in Ansan-si, Gyeonggi-do, our facility houses dedicated CNC machining centers, gear hobbing lines, heat treatment furnaces, and dynamometer testing stations.
Our engineering team brings over 20 years of experience in agricultural gearbox design, with deep expertise in bevel gear geometry, planetary gear trains, and tractor PTO interface standardization. We serve OEMs, equipment dealers, and end-users in 50+ countries with both standard catalog products and fully custom pto drive gearbox solutions.
PTO Gearbox Specifications Overview
Reference table covering popular PTO gearbox models with key technical parameters. All specifications comply with agricultural gearbox ISO 500 standards for PTO interface dimensions and rotational speeds.
| Gearbox Type | Application | Input Speed | Gear Ratio | HP Rating | Gear Type | Housing |
|---|---|---|---|---|---|---|
| Rotary Cutter GB | Brush / Pasture Cutting | 540 RPM | 1:1.93 | Up to 75 HP | Spiral Bevel | Cast Iron |
| Flail Mower GB | Vegetation Management | 540/1000 RPM | 1:1.47 | Up to 90 HP | Spiral Bevel | Cast Iron |
| Rotary Mower GB | Turf / Parkland Mowing | 540 RPM | 1:1 | Up to 60 HP | Helical | Aluminum / Iron |
| Round Baler GB | Hay / Straw Baling | 540 RPM | Multi-Stage | Up to 120 HP | Helical-Bevel | Cast Iron |
| Fertilizer Spreader GB | Broadcast Spreading | 540 RPM | 1:1 | Up to 50 HP | Bevel | Stainless / Iron |
| Feed Mixer GB | TMR Feed Mixing | 540/1000 RPM | Planetary | Up to 150 HP | Planetary-Helical | Cast Steel |
| Post Hole Digger GB | Fencing / Pole Setting | 540 RPM | Various | Up to 40 HP | Bevel | Cast Iron |
| Rotary Tiller GB | Soil Tillage | 540 RPM | 1:1.46 | Up to 80 HP | Spiral Bevel | Cast Iron |
| PTO Speed Increaser | Hydraulic Pump Drive | 540/1000 RPM | 1:2 – 1:6 | Up to 100 HP | Helical | Aluminum |
| Marine Gearbox | Vessel Propulsion | Variable | Custom | Up to 200 HP | Helical-Planetary | Marine-Grade |
How to Select the Right PTO Gearbox
Choosing the correct tractor PTO gearbox involves matching several critical parameters to your implement requirements. Follow these four steps to ensure optimal performance and longevity from your agricultural gearbox investment.
Identify Your Application
Start with the implement type: rotary cutter, flail mower, round baler, rotary tiller, feed mixer, post hole digger, wood chipper, or manure spreader. Each demands specific gear configurations and seal systems.
Match PTO Speed & Ratio
Standard tractor PTO speeds are 540 or 1000 RPM. Calculate the gear ratio needed for your target output speed. For PTO speed increaser gearboxes, verify the multiplication factor matches your hydraulic pump requirements.
Verify Torque & HP Rating
Ensure the PTO gearbox torque capacity exceeds your peak operational load by at least 25%. Undersizing a pto drive gearbox leads to premature gear failure, bearing damage, and increased gearbox noise and vibration.
Confirm Mounting & Shaft
Check bolt pattern, shaft diameter, spline count (6, 20, or 21 spline), rotation direction, and housing orientation. For cross-referencing OEM gearboxes, provide the original model number to our engineering team.
PTO Gearbox Noise and Vibration Troubleshooting
Abnormal gearbox noise and vibration are early warning signs of PTO gearbox problems. Our engineering team provides guidance on diagnosing and resolving common agricultural gearbox issues before they lead to costly field failures.
Gear Whine Under Load
High-pitched whine increasing with PTO speed usually indicates worn gear teeth or improper gear mesh clearance. This is common in high-hour rotary cutter gearboxes. Solution: inspect tooth contact pattern, check backlash, and replace worn gear sets.
Bearing Rumble at Idle
Low-frequency rumble present at idle suggests bearing preload loss or contaminated lubricant. Tapered roller bearings in round baler gearbox units are especially susceptible. Solution: drain and inspect oil for metal particles, replace bearings and seals.
Intermittent Knocking
Periodic knocking synchronized with PTO shaft rotation may indicate damaged splines, a cracked gear tooth, or loose internal fasteners. Common in flail mower gearbox units subject to severe impact loads. Solution: complete internal inspection required.
Excessive Housing Vibration
If the entire PTO gearbox housing vibrates, check for loose mounting bolts, misalignment between the tractor PTO and input shaft, or an unbalanced implement. Truck gearbox types can exhibit similar symptoms when driveline angles exceed specifications.
Oil Overheating
Lubricant temperatures exceeding 90°C indicate insufficient oil volume, wrong viscosity grade, or continuous overloading. Hydraulic PTO gearbox units driving speed increasers for hydraulic pumps are prone to this. Solution: verify oil level, upgrade to synthetic EP gear oil.
Seal Leakage
Oil leaking from input or output shaft seals is the most common PTO gearbox maintenance issue. Causes include worn lip seals, shaft surface scoring, or excessive internal pressure. Solution: replace seals, polish shaft surfaces, and verify breather vent is clear.
Frequently Asked Questions About PTO Gearboxes
Expert answers to the most common questions about selecting, ordering, and maintaining agricultural gearbox products.
We manufacture gearbox for rotary cutters, flail mower gearbox, rotary mower gearbox, round baler gearbox, fertilizer spreader gearbox, gearbox for post hole diggers, rotary tiller gearbox, gearbox for wood chippers, gearbox for manure spreaders, gearbox for feed mixers, PTO speed increaser gearboxes, pto gear reducer units, hydraulic PTO gearbox assemblies, speed increaser for hydraulic pumps, and marine gearbox products. We also handle truck gearbox types and custom pto drive gearbox applications.
MOQ is 1 unit for standard catalog models. Custom agricultural gearbox designs with dedicated tooling typically start at 50–100 units. We offer trial order programs for new OEM clients evaluating quality before volume commitment.
Yes. All tractor PTO gearbox products are manufactured in compliance with ISO 500 standards for PTO power take-off interface dimensions, rotational speeds (540/1000 RPM), and safety guard clearance. Our quality management system is ISO 9001:2015 certified.
Standard PTO gearbox models: 15–20 working days. Custom designs: 25–35 working days. All orders include full quality documentation (material certificates, dimensional reports, test certificates). Expedited manufacturing is available for urgent requirements.
Yes. Our engineering database covers cross-references for major brands including Bondioli & Pavesi, Comer Industries, Walterscheid, Bush Hog, and many regional OEMs. Send us your existing gearbox part number or nameplate photo and we'll identify the matching Ever-Power model.
Yes. Our technical support team provides remote diagnostics for gearbox noise and vibration troubleshooting via email and video consultation. We analyze gear wear patterns, bearing conditions, lubrication quality, and shaft alignment to identify root causes and recommend corrective actions.
All agricultural gearbox products carry a 12-month warranty from date of delivery, covering defects in materials and workmanship under normal operating conditions. Extended warranty programs are available for OEM partners with annual volume commitments.
Ready to Source Your PTO Gearbox?
From a single tractor PTO gearbox replacement to full OEM agricultural gearbox supply — our engineering team delivers precision, quality, and value. Contact us today for a free quotation within 24 hours.