Описание
Agricultural Gearbox — UK Supplier
HC 01 661 & HC 01 662 Lawn Mower Series Gearbox
Two Models · Ratio 1:1.3 | 80 HP | 540 rpm | 1¾ Z20 Spline | Cast Iron Housing
The HC 01 661 and HC 01 662 are two closely related variants within the same Lawn Mower Series, both engineered for heavy-duty rotary cutting operations across grassland, roadside verge, and estate management applications throughout the United Kingdom. Understanding which model suits your machine is key to getting the right fit first time.
Two Models — Which One Do You Need?
Both the HC 01 661 and HC 01 662 share the same core specification — 80 HP, 540 rpm rated input, 1:1.3 ratio, 1¾ Z20 spline interface — but differ in their output shaft configuration and attachment geometry. Selecting the correct variant ensures direct compatibility with your mower deck mounting.
Not sure which model fits your mower? Send us your mower make, model, and deck size and we will confirm the correct variant within one working day.
Technical Specifications — HC 01 661 vs HC 01 662
| Параметр | HC 01 661 | HC 01 662 |
|---|---|---|
| Соотношение | 1:1.3 | 1:1.3 |
| Зубы | 26/20 | 26/20 |
| Модуль | 5.644 | 5.644 |
| Power (HP) | 80 | 80 |
| Номинальный входной сигнал | 540 об/мин | 540 об/мин |
| Input/Output | 1¾ Z20 | 1¾ Z20 |
| Weight (N.W) | 57.5 kg | 57.5 kg |
| Конфигурация вывода | Standard flange Most common UK mower decks |
Alt. flange layout Specific OEM / modified decks |
ⓘ If you are unsure which output configuration your mower requires, send us your mower make and deck part number and we will confirm the correct model before you place an order.
The HC 01 661 & HC 01 662: Same Series, Right Configuration for Your Machine
The HC 01 661 and HC 01 662 are both members of the Lawn Mower Series agricultural gearbox range, sharing identical internal engineering — 80 HP power capacity, a 1:1.3 step-up ratio, precision-cut 26/20 tooth bevel gears at module 5.644, and a standardised 1¾ Z20 spline input that directly accepts the 540 rpm PTO output used by the vast majority of British tractors. Where the two variants differ is in their output shaft arrangement and flange geometry, which determines which mower deck each unit is compatible with. Getting the right model eliminates the need for adapter plates or shaft modifications, reducing both fitment time and the risk of misalignment-related wear.
Whether you are sourcing a direct replacement for an existing unit on a 4-metre Maschio, Kuhn, or Vicon rotary mower deck, specifying components for a new OEM build, or stocking both variants for a UK agricultural dealership, understanding the output configuration difference between the HC 01 661 and HC 01 662 is the key step. Both units are stocked and available for supply to customers across England, Scotland, Wales, and Northern Ireland, with technical support available to confirm model suitability before order.
Shared Advantages Across Both Models
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Precision Gear Engineering
The 26/20 tooth bevel gear set at module 5.644 is machined to tight tolerances on both the 661 and 662. Low-vibration power transfer throughout the cutting cycle reduces wear on the mower deck bearing assembly and extends service intervals on busy commercial contracts across the UK.
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80 HP Rated Capacity
Both variants are rated at 80 HP, handling the sustained output of modern high-horsepower tractors used in UK grounds maintenance and agricultural contracting without thermal stress or lubrication breakdown — even on long daily runs covering large-acreage contracts.
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Standard 540 rpm PTO Input
The 1¾ Z20 spline input on both models matches the standard PTO connection used by tractors from all major British and European manufacturers. No shaft adapters are needed — connect directly to your existing PTO drive shaft and run.
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Heavy Cast Iron Construction
At 57.5 kg, the cast iron housing on both the HC 01 661 and HC 01 662 absorbs shock loads from blade strikes against stones, root clumps, and debris — common in British field and verge cutting — while maintaining gear alignment throughout years of continuous use.
Where Are These Gearboxes Used Across the UK?
The HC 01 661 and HC 01 662 both find their way into the same range of professional mowing and vegetation management applications. The 80 HP, 540 rpm specification positions them squarely in the commercial and agricultural contractor sector across England, Scotland, Wales, and Northern Ireland.
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Sports Turf
Football pitches, racecourses, and golf course rough areas where machinery reliability cannot be compromised during season.
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Roadside Verge Cutting
Local authorities and highways contractors across Britain rely on high-torque agricultural gearboxes to keep A and B road verges clear year-round.
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Estate & Parkland
Country estates and national parks in England and Scotland with large open grassland areas requiring extended daily running hours.
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Pasture & Farm Topping
Arable and livestock farms throughout the UK using rotary toppers; the 80 HP capacity keeps pace with modern high-output farm tractors.
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OEM Implement Builds
Both the 661 and 662 are specified by implement manufacturers needing a proven 80 HP bevel gearbox unit to build into new rotary mower product lines.
Materials, Construction & Operating Principle
Both the HC 01 661 and HC 01 662 operate on a bevel gear drive principle, converting the horizontal rotational input from the tractor’s PTO shaft into the vertical output rotation required to drive the mower blade disc. The 1:1.3 step-up ratio delivers a slightly higher blade tip speed than the PTO input — ideal for a clean, high-velocity cut across the range of grass types found on British farms and green spaces. The internal gear set is manufactured from alloy steel with case hardening to resist pitting, surface fatigue, and shock loading from blade strikes.
The housing on both models is produced from grey cast iron or ductile iron depending on the production batch specification, providing the rigidity needed to maintain gear alignment across years of field use in British conditions — where wet, heavy grass, embedded stones, and soft ground all place additional stress on the drivetrain. Sealed tapered roller bearing assemblies on both the input and output shafts keep contamination out of the gear chamber, and oil-bath lubrication with EP80/90 gear oil maintains a consistent lubricant film through both cold spring mornings in Scotland and warm summer cutting days in southern England.
| Компонент | Material / Standard (Both Models) |
|---|---|
| Gear Set | Case-hardened alloy steel, module 5.644 |
| Жилье | High-strength cast iron, precision bored |
| Входной вал | 1¾ Z20 spline, chrome-molybdenum steel |
| Подшипники | Sealed tapered roller bearings, matched pair |
| Смазка | Oil-bath, EP80/90 gear oil (standard) |
Customer Success Case: UK Grounds Maintenance Fleet
Case Study — Lincolnshire, England | Grounds Maintenance Contractor
A mid-sized grounds maintenance company based in Lincolnshire, managing highway verge contracts across three county council areas in the East Midlands, contacted us in March 2024 needing replacements for worn-out gearboxes across a fleet of 4-metre rotary mowers. Their mixed fleet included two mower models with different deck flange configurations — exactly the scenario where both the HC 01 661 and HC 01 662 are needed. Their previous supplier had only stocked one variant, forcing them to use adapter plates on the second machine type, which had caused alignment problems and premature bearing wear.
We supplied three HC 01 661 units for their standard-deck mowers and two HC 01 662 units for their alternative-configuration decks. All five were fitted within two days by their in-house mechanic. By the end of the 2024 cutting season — covering roughly 1,800 hectares of roadside verge and parkland — every unit was still running with no oil leaks, no gear noise, and oil levels holding within spec. The company now stocks both variants as standard spare units.
Что говорят наши клиенты
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“Having both the 661 and 662 available from one supplier saved us a lot of headaches. Our two mower types have different flange arrangements and being able to order the correct variant for each was a real advantage over our previous supplier.”
— T. Bradshaw, Fleet Manager
Grounds Maintenance Ltd, East Midlands, UK
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“Fitted the HC 01 662 to our Kuhn mower — the spline interface was perfect and the output flange bolted straight on with no modification. Their team confirmed the right model before we ordered, which we appreciated.”
— R. McAllister, Workshop Supervisor
McAllister Farm Services, Ayrshire, Scotland
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“We stock both variants now for our dealership parts counter. UK highway contractors increasingly ask for these by model number. Good lead time and the technical drawing was useful for customers confirming fitment.”
— G. Williams, Parts Manager
Agricultural Parts & Machinery, South Wales, UK
Also Available: Aluminium Box Series Gearboxes
If your application calls for a lighter-weight aluminium-housing gearbox rather than the cast iron HC 01 series, we also supply aluminium box series units suited to smaller mower heads and light-duty agricultural attachments. These are a popular choice with smallholders, equestrian operations, and vegetable growers across rural England and Wales who need a cost-effective compact drive unit.
Aluminium Series
HC-RV022 (X) Aluminum Box Series Gearbox
Compact aluminium-housing gearbox for lighter implements. Suited to small rotary mowers, seeders, and cultivation attachments across the UK market.
Aluminium Series
HC-RV010 Aluminum Box Series Gearbox
Right-angle aluminium configuration for compact PTO applications. Well-suited to equestrian and smallholding grassland management equipment across rural Britain.
Manufacturing Facility & Custom Gearbox Capability
Both the HC 01 661 and HC 01 662 are produced in a dedicated facility equipped with CNC gear hobbing machines, coordinate measuring machines (CMM), and automated heat treatment lines. Every unit completes dimensional inspection and load-cycle testing before despatch — ensuring the unit arriving at your workshop matches the drawing exactly, regardless of which of the two variants you order.
Beyond these two catalogue models, our engineering team offers a full custom agricultural gearbox development service. If your mower or implement requires a non-standard gear ratio, a modified output flange, a different housing orientation, or any dimensional change to suit a specific chassis design, we produce bespoke units from as low as 50-piece minimum order quantities. OEM implement manufacturers and specialist machinery builders across the UK and Europe use this service to avoid the tooling investment of establishing their own gear production. Send us your drawing or specification and we will respond with a technical and commercial feasibility assessment within two working days.
Часто задаваемые вопросы
What is the difference between the HC 01 661 and HC 01 662 lawn mower gearboxes?
The HC 01 661 and HC 01 662 share the same internal specification — 80 HP, 1:1.3 ratio, 540 rpm rated input, 26/20 teeth at module 5.644, and 1¾ Z20 spline — but differ in their output shaft configuration and flange geometry. The HC 01 661 suits the standard mower deck flange arrangement used on the most common rotary mower designs in the UK, while the HC 01 662 is configured for mower decks with a different output flange layout. If you are unsure which applies to your machine, contact us with your mower make and model and we will confirm the correct variant.
Which model — HC 01 661 or HC 01 662 — fits a standard 540 rpm PTO tractor for roadside verge mowing in the UK?
Both the HC 01 661 and HC 01 662 are rated for 540 rpm PTO input via the standard 1¾ Z20 spline, so either model connects directly to your tractor’s PTO without shaft modification. The choice between the two depends on your mower deck’s output flange configuration, not on the tractor side of the drivetrain. For roadside verge mowing contracts in England, Scotland, or Wales, send us your mower deck make and model number and we will confirm the correct variant to order.
How much does the HC 01 661 or HC 01 662 agricultural gearbox cost and can UK buyers get a price from this supplier?
Pricing on both the HC 01 661 and HC 01 662 depends on the order quantity and whether you require standard or custom specification. To get an accurate quote for supply to a UK address, email us at [email protected] with the model number, required quantity, and delivery postcode. We typically respond with a formal quotation within one to two working days.
Where can UK agricultural dealers source both the HC 01 661 and HC 01 662 gearboxes from a single supplier?
Agriculturalgearboxes.top stocks both the HC 01 661 and HC 01 662 as part of the Lawn Mower Series range, available for supply to UK agricultural dealerships, parts distributors, grounds maintenance contractors, and OEM implement manufacturers. We ship to all regions of the United Kingdom with competitive lead times and can discuss volume pricing for regular dealership orders.
What oil type should I use when servicing an HC 01 661 or HC 01 662 lawn mower gearbox?
Both the HC 01 661 and HC 01 662 use oil-bath lubrication with EP80/90 gear oil as standard. Check the fill level at the side-face level plug with the gearbox in its operating orientation. We recommend an oil change after the first 50 hours on a new unit, then every 250 operating hours or once per season — whichever comes first. Full service documentation is included with every unit supplied.
Can I order a custom-configured agricultural gearbox if neither the HC 01 661 nor HC 01 662 fits my mower deck?
Yes. If your mower deck or implement requires a non-standard flange arrangement, gear ratio, or output shaft configuration that neither the HC 01 661 nor HC 01 662 covers, our engineering team can produce a custom-specification gearbox from a minimum order of 50 units. This service is used regularly by OEM implement manufacturers across the UK and Europe. Contact us with your technical drawing or specification and we will provide a feasibility assessment within two working days.
Ready to Order the HC 01 661 or HC 01 662?
Tell us your mower make, model, and deck configuration and we will confirm the correct variant and get a quote back to you within one working day. We supply UK grounds maintenance contractors, farm dealerships, and OEM manufacturers.
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