{"id":3961,"date":"2026-07-02T05:56:58","date_gmt":"2026-07-02T05:56:58","guid":{"rendered":"https:\/\/agriculturalgearboxes.top\/?post_type=product&p=3961"},"modified":"2026-07-07T05:18:45","modified_gmt":"2026-07-07T05:18:45","slug":"hc-55-lawn-mower-series-gearbox","status":"publish","type":"product","link":"https:\/\/agriculturalgearboxes.top\/kk\/product\/hc-55-lawn-mower-series-gearbox\/","title":{"rendered":"HC-55 Lawn Mower Series Gearbox"},"content":{"rendered":"
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Agricultural Gearbox<\/div>\n

HC-55 Lawn Mower Series Gearbox \u2014 50HP Right-Angle Drive for UK Farming Operations<\/h2>\n

Purpose-engineered for high-demand tillage, harvesting and crop processing applications across the United Kingdom, the HC-55 delivers robust 1:1.6 ratio power transmission with a 540 rpm PTO-compatible input \u2014 built to last in British field conditions.<\/p>\n

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What Makes the HC-55 the Right Choice for British Farms?<\/h2>\n

Product Overview<\/p>\n<\/div>\n

\"\u0430\u0443\u044b\u043b\u0448\u0430\u0440\u0443\u0430\u0448\u044b\u043b\u044b\u049b The HC-55 agricultural gearbox is a compact yet exceptionally capable right-angle drive unit, engineered for the rigours of British arable and mixed farming environments. With a gear ratio of 1:1.6, a 15\/24 tooth configuration and a module rating of 6.0, it transmits up to 50 horsepower from a standard 540 rpm PTO input with outstanding mechanical efficiency. The cone-base aequilate spline shaft (1 3\/8 Z6) ensures direct, low-backlash coupling to tractor power take-off systems common across UK machinery fleets \u2014 from compact utility tractors on smallholdings in Yorkshire to large-scale combinable crop operations in East Anglia. At a net weight of just 28.7 kg, the HC-55 strikes a balance between structural durability and ease of installation that many competing agricultural gearboxes in its power class simply cannot match. Whether driving rotary tillers, hedge cutters, spreading augers or beet harvester cleaning stars, this unit adapts to diverse seasonal workloads with minimal maintenance intervention, making it a commercially sensible investment for UK farm machinery dealers, OEM equipment builders and end-user farming businesses alike.<\/p>\n

Manufactured to exacting dimensional tolerances, the HC-55 agricultural gearbox housing is produced from high-grade cast iron, providing the thermal mass and rigidity needed to sustain continuous-duty operation throughout long harvest shifts. Internal gear sets are manufactured from alloy steel with carburising and case-hardening treatment, ensuring tooth hardness profiles that resist pitting and wear even under sustained heavy-draft loads. The sealed bearing arrangement, combined with a precision-machined housing bore, keeps contaminants out of the lubrication circuit \u2014 critical in the muddy, high-moisture field conditions typical of UK autumn harvests. The result is an agricultural gearbox that not only performs reliably from day one but continues doing so across multiple seasons with only routine oil-level checks required.<\/p>\n<\/div>\n

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Core Performance Advantages<\/h2>\n

Why UK Buyers Specify HC-55<\/p>\n<\/div>\n

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Optimised 1:1.6 Ratio<\/h3>\n

The 1:1.6 gear ratio is purpose-selected for PTO-driven implements where modest output speed increase is required without compromising torque delivery \u2014 ideal for rotary harrows, flail mowers and cleaning star assemblies used widely across English, Scottish and Welsh farms.<\/p>\n<\/div>\n

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Universal 1 3\/8 Z6 Spline<\/h3>\n

The cone-base aequilate spline shaft conforms to the globally recognised 1 3\/8 Z6 standard, ensuring direct fitment to virtually every modern tractor PTO shaft in the UK market without adapters or modification \u2014 reducing installation time on farm significantly.<\/p>\n<\/div>\n

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Heavy-Duty Cast Iron Housing<\/h3>\n

Precision-cast grey iron housing provides vibration damping, thermal stability and long-term dimensional integrity under impact loading \u2014 qualities that matter especially in UK sugar beet harvesting and root crop operations where field conditions are often abrasive and unpredictable.<\/p>\n<\/div>\n

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Compact 28.7 kg Build<\/h3>\n

At just 28.7 kg net weight, the HC-55 agricultural gearbox fits comfortably within the weight budgets of mid-category implements, simplifying mounting design for UK OEM manufacturers and reducing implement balance adjustments for end-user farm machinery operators.<\/p>\n<\/div>\n

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50HP Rated Capacity<\/h3>\n

With a 50HP power rating at 540 rpm, the HC-55 comfortably handles mid-range PTO implement demands without running close to its mechanical limits \u2014 extending service life, reducing heat build-up during extended duty cycles and minimising unscheduled downtime during critical harvest windows.<\/p>\n<\/div>\n

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Case-Hardened Alloy Gears<\/h3>\n

Carburised and case-hardened alloy steel gears deliver surface hardness levels sufficient to resist abrasive wear, micro-pitting and scuffing \u2014 failure modes that commonly affect agricultural gearboxes used intensively across UK spring cereal drilling and autumn root harvesting campaigns.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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HC-55 Product Parameters<\/p>\n<\/div>\n

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\"HC-55<\/div>\n
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\u041f\u0430\u0440\u0430\u043c\u0435\u0442\u0440<\/th>\n\u0422\u0435\u0445\u043d\u0438\u043a\u0430\u043b\u044b\u049b \u0441\u0438\u043f\u0430\u0442\u0442\u0430\u043c\u0430<\/th>\n<\/tr>\n<\/thead>\n
\u0422\u0430\u0443\u0430\u0440<\/td>\nHC-55<\/td>\n<\/tr>\n
\u049a\u0430\u0442\u044b\u043d\u0430\u0441<\/td>\n1:1.6<\/td>\n<\/tr>\n
Teeth<\/td>\n15\/24<\/td>\n<\/tr>\n
\u041c\u043e\u0434\u0443\u043b\u044c<\/td>\n6.0<\/td>\n<\/tr>\n
Power (HP)<\/td>\n50<\/td>\n<\/tr>\n
Rated Input<\/td>\n540 rpm \/ 1 3\/8 Z6<\/td>\n<\/tr>\n
Input\/Output Description<\/td>\nCone base aequilate spline shaft<\/td>\n<\/tr>\n
Weight (N.W)<\/td>\n28.7 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

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How It Works: Principle, Materials & Field Scenarios<\/h2>\n

Engineering & Application Context<\/p>\n<\/div>\n

\"HC-55<\/p>\n

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The HC-55 operates on a bevel gear right-angle transmission principle. Rotational input from the tractor’s 540 rpm PTO shaft enters via the 1 3\/8 Z6 cone spline, engaging the 15-tooth drive bevel gear. This meshes with the 24-tooth driven bevel gear mounted on the output shaft, delivering a 1:1.6 speed increase with corresponding torque adjustment. The bevel meshing geometry ensures smooth, low-noise operation and high mechanical efficiency \u2014 typically 96\u201398% \u2014 which minimises heat generation during prolonged field operation. Bearing preload is factory-set to optimise gear mesh contact pattern and extend both bearing and gear fatigue life across the unit’s designed service interval.<\/p>\n<\/div>\n

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Materials & Construction<\/h3>\n

The housing is manufactured from GG25 grey cast iron, providing the combination of stiffness, machinability and damping capacity essential for agricultural service. Gear blanks are produced from 20CrMnTi alloy steel, which is then carburised to achieve a case depth of 0.8\u20131.2 mm and surface hardness of HRC 58\u201362. Input and output shafts are produced from 40Cr medium-carbon alloy steel, induction-hardened at journal diameters. Taper roller bearings pre-loaded to manufacturer specification handle combined radial and axial loads. All oil seals are nitrile rubber, rated for continuous operation in EP gear oil environments standard for UK agricultural applications.<\/p>\n<\/div>\n

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Typical Field Applications<\/h3>\n