Опис
HC-LF211 Lawn Mower Series Gearbox
High-Torque 1:2.83 Ratio Drive Unit | 20HP | 540 RPM | Precision-Engineered for UK Farming Conditions
The HC-LF211 agricultural gearbox is a purpose-built, heavy-duty drive component designed to meet the demanding power transmission requirements found across UK arable, horticultural, and root-crop farming operations. With a speed ratio of 1:2.83, a rated input of 540 rpm, and a power capacity of 20HP, this unit delivers consistent, reliable performance across a wide range of PTO-driven implements — from rotary spreaders and beet harvesters to mowers and soil preparation machinery. The gearbox uses a 34/12 gear tooth configuration with a module of 3.36, producing a drive that is both smooth under load and highly resistant to fatigue failure. Weighing just 14.5 kg net, it balances robustness with practical handling convenience for field installation and servicing. At Ever-Power, every HC-LF211 unit undergoes rigorous quality inspection before despatch to our UK partners, backed by a team with nearly two decades of applied engineering experience in agricultural drivetrain systems.
Why Choose the HC-LF211 for Your UK Farm Operation
Precision Gear Meshing
A 34/12 tooth combination with module 3.36 ensures smooth torque transmission even under variable PTO-load conditions typical on UK mixed farms. Backlash is tightly controlled to extend service intervals.
20HP Rated Capacity
Rated at 20HP continuous input, the HC-LF211 is well-suited to mid-range tractor implements. It handles real-world demand spikes without thermal runaway, thanks to a housing design that promotes natural heat dissipation during sustained fieldwork.
Standard 1 3/8 Z6 Input
The 1 3/8 Z6 splined input shaft is the de facto standard across the vast majority of European tractor PTO connections, meaning the HC-LF211 slots directly into your existing drivetrain without adapters or shaft modifications.
Optimised for UK Field Conditions
Sealed against ingress of moisture and field debris common in British working environments — including clay-heavy soils and high-rainfall harvest seasons — the HC-LF211’s housing and seal arrangement keeps lubricant in and contaminants out across thousands of operational hours.
Lightweight at 14.5 kg
At just 14.5 kg net weight, the HC-LF211 is straightforward for a single engineer to mount, adjust, or swap during a busy harvest window — reducing machine downtime without requiring specialist lifting equipment in the field.
Custom Configuration Available
Ratio, shaft interface, mounting flange, and paint specification can all be modified to suit OEM implement builders and specialist machinery manufacturers across England, Scotland, Wales, and Northern Ireland.
Technical Specifications — HC-LF211
| Параметр | Специфікація |
|---|---|
| Елемент | HC-LF211 |
| Співвідношення | 1:2.83 |
| Зуби | 34 / 12 |
| Модуль | 3.36 |
| Power (HP) | 20 |
| Номінальний вхідний сигнал | 540 rpm |
| Input / Output Description | 1 3/8 Z6 / Optic axis |
| Weight (N.W.) | 14.5 kg |
Dimensional Drawing
How the HC-LF211 Works — Principle, Materials & Design
At its core, the HC-LF211 agricultural gearbox operates on a single-stage helical gear principle. When drive is applied at the 1 3/8 Z6 splined input shaft — typically from a 540 rpm PTO — the motion passes through the helical gear pair (34 driven / 12 driving, module 3.36) to emerge at the optic axis output at a stepped-up ratio of 1:2.83. Helical gears are selected over straight-cut alternatives specifically because their angled tooth contact generates gradual load engagement, reducing shock loading through the drivetrain and improving acoustic performance — an important consideration when machinery is operating close to livestock buildings or public rights of way on UK farms.
The gear blanks are produced from case-hardened alloy steel, processed through carburising and quenching to achieve a surface hardness of HRC 58–62 while retaining a tough core. This combination resists both surface fatigue pitting — common in high-cycle agricultural applications — and impact fracture from sudden load reversals such as those experienced when a beet harvester’s cleaning rotor strikes stones or soil clumps. The housing is cast from high-grade grey iron, which provides excellent vibration damping and thermal mass to spread heat generated during extended harvesting runs.
Lip seals rated for the expected operational temperature range are fitted at both shaft exits, with a breather plug preventing pressure build-up during thermal cycling. The unit is pre-filled with EP80W-90 gear oil and is designed for top-up servicing intervals aligned with typical UK seasonal maintenance windows — reducing the total cost of ownership for farm businesses working to tight seasonal budgets.
Application Scenarios for HC-LF211 Agricultural Gearboxes
The HC-LF211 agricultural gearbox finds application across a broad spectrum of PTO-driven implements used throughout the UK growing season. Its compact dimensions, standard spline interface, and 20HP power handling make it a natural choice wherever an efficient, durable speed-step-up drive is required in a confined implement housing. Below are some of the primary use environments where this gearbox is regularly specified by UK implement OEMs and farm machinery engineers.
🌿 Sugar Beet Harvesting
Driving cleaning star rotors and cross conveyors on beet harvesters operating across Lincolnshire, Norfolk, and the East Riding — see our dedicated pages on Cleaning Star Gearbox for Beet Harvester: High-Torque Precision Drive for UK Sugar Beet Operations for detailed application guidance.
🌿 Rotary Mowers & Toppers
Providing the required speed multiplication from 540 rpm PTO to rotor operating speeds on offset disc mowers and heavy-duty verge toppers widely used on UK farms and local authority contracts. See our dedicated pages on Cleaning Star Gearbox для бурякозбиральних комбайнів: рішення з високим крутним моментом, яке переосмислює ефективність відновлення коренеплодів на сільськогосподарських угіддях Великої Британії for detailed application guidance.
🌿 Fertiliser & Lime Spreaders
Driving spinner discs on twin-disc fertiliser spreaders used on cereal and vegetable production units across the UK. The smooth torque characteristic of the HC-LF211 helps maintain even spread patterns at field headlands.
🌿 Soil Preparation Machinery
Incorporated into power harrows and rotavators where the increased output speed from the gearbox drives tine rotation at rates effective for seedbed preparation on heavy UK soils ahead of spring drilling.
Our Manufacturing Capability & Custom Engineering
Ever-Power’s agricultural gearbox manufacturing facility operates precision CNC gear-hobbing and grinding lines capable of producing gear modules from 1.0 through to 8.0, covering the full range of agricultural transmission requirements. Our engineering team works directly with UK OEM implement manufacturers and farm machinery importers to develop bespoke gearbox configurations — including modified ratios, alternative mounting flanges, non-standard shaft diameters, and specific seal arrangements for high-pressure wash-down environments. We hold EN ISO 9001 certification and operate an in-house metrology laboratory with CMM verification of gear geometry on every production batch. Prototype and short-run OEM orders receive dedicated application engineering support, with drawing review and field trialling data available on request. Whether you need a direct replacement for an existing import part or a completely new gearbox designed around your implement geometry, our team can turn around initial design proposals within five working days.
Історії успіху клієнтів
Real results from UK and European agricultural machinery businesses using Ever-Power gearboxes.
Root Crop Harvester OEM | Fitted June 2025
We build specialist sugar beet cleaning attachments for a major UK harvester brand and had been struggling with the reliability of a previous Asian-sourced gearbox that was failing at the seals after roughly 200 operating hours. Switching to the HC-LF211 from Ever-Power resolved the issue completely. We’ve now run three units through a full East Anglian beet campaign — a combined figure of well over 800 hours — and haven’t seen a single seal failure or any measurable wear on the gear faces. The standard 1 3/8 Z6 input meant zero fitment issues, and the drawing support from the Ever-Power team was genuinely impressive. We’ll be specifying these as standard going forward.
“We ordered six HC-LF211 units as replacement drives for our fleet of rotary spreaders. Delivery to our Shropshire depot took less than three weeks, the packaging was solid, and the units were exactly to spec. Very satisfied.”
James K.
Agricultural Contractor, West Midlands, UK
“Our workshop in Bavaria sources agricultural gearbox parts from several Asian manufacturers. Ever-Power stands out for consistent dimensional accuracy — we’ve had zero rework on the last two HC-LF211 batches. Good communication on lead times too.”
Thomas W.
Implement Spares Distributor, Bavaria, Germany
“Purchased the HC-LF211 for a rebuild on an older power harrow — the dimensions matched perfectly and it went straight on. Running it now through the second season with no issues. Good value for a properly made agricultural gearbox.”
Ian M.
Mixed Arable Farmer, Lincolnshire, UK
Часті запитання
Common questions from UK farmers, machinery dealers, and implement OEMs
Ready to Source HC-LF211 Agricultural Gearboxes for Your UK Operation?
Contact our agricultural drivetrain specialists for pricing, technical advice, and custom engineering support.
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