Beskrivelse
Agricultural Gearbox | Lawn Mower Series
HC-19455-KW Lawn Mower Series Gearbox
Heavy-duty 1:1 ratio gearbox engineered for professional-grade lawn mowing and turf management equipment. Designed and supplied to agricultural machinery manufacturers and dealers across the United Kingdom.
Built for the Demands of British Agriculture
The HC-19455-KW lawn mower gearbox represents the intersection of precision engineering and practical durability. Rated at 20 HP with a 540 rpm input speed, this unit is built to withstand the continuous, high-load cycles typical of commercial turf maintenance across UK farms, estate grounds, and municipal green spaces. The 1:1 gear ratio with 19/19 teeth configuration delivers smooth, balanced power transfer without parasitic losses — a critical advantage when running PTO-driven deck mowers across undulating terrain.
With a module value of 4.23 and a net weight of just 9 kg, this agricultural gearbox achieves an outstanding power-to-weight ratio. The ɸ25 optical axis input/output interface ensures direct compatibility with standard tractor PTO configurations, reducing installation time and eliminating the need for adapter hardware on common machinery platforms used throughout England, Scotland, and Wales.
Tekniske specifikationer
Dimensional Drawing
How the HC-19455-KW Works
Power enters the gearbox through the ɸ25 optical axis input shaft, driven at 540 rpm via the tractor’s PTO. The internal bevel gear pair — 19 teeth on each gear, machined to a 4.23 module — transmits torque through a 90-degree change of direction at a 1:1 ratio. This means the output shaft rotates at exactly the same speed as the input, making the HC-19455-KW ideal for deck mower blades that require full PTO speed to achieve the blade tip velocity needed for clean, efficient grass cutting.
The gearbox housing is precision-cast and machined to tight tolerances, allowing the bevel gears to mesh with minimal backlash and noise. Internal lubrication passages and sealed bearing assemblies ensure that the unit runs cool even during extended field operations — an important consideration during summer hay management or roadside verge cutting seasons across UK countryside estates and farms.
The overall mechanical efficiency of this design consistently exceeds 95%, which means less heat generation, lower fuel consumption on the tractor, and longer service intervals. The compact 9 kg profile fits within the mounting envelopes of most leading rotary mower decks, reducing the structural load on deck frames while still comfortably handling the rated 20 HP continuous power load.
Why UK Buyers Choose This Lawn Mower Gearbox
Precision 1:1 Gear Ratio
Full PTO speed transfer to the blade shaft delivers consistent cutting performance across all grass types and conditions typical of British summer growth cycles.
High Power, Low Weight
At only 9 kg, the unit handles 20 HP continuously. This power-to-weight ratio reduces deck stress and allows use on lighter-framed municipal mowing equipment.
Standard PTO Compatibility
ɸ25 optical axis input/output matches standard 540 rpm PTO outputs across the tractor brands most widely operated on UK farms — no adapters, no custom shafting required.
Long Service Intervals
Sealed bearings and internal oil lubrication minimise maintenance requirements, keeping downtime low during peak cutting seasons when field schedules cannot afford delays.
Precise Gear Machining
Module 4.23 bevel gears manufactured to tight tooth profile tolerances deliver quiet operation and resist the shock loading inherent in mowing over stones and uneven ground.
OEM & Aftermarket Supply
Available to agricultural machinery OEMs for new builds and to UK distributors as a direct-fit replacement for worn or damaged lawn mower gearboxes on existing equipment.
Application Scenarios in the United Kingdom
The HC-19455-KW lawn mower gearbox is used across a wide range of turf and grass management applications throughout England, Scotland, Wales, and Northern Ireland. Its 540 rpm input specification is the dominant standard for rear PTO tractors in the 20–80 HP range — the most common segment in UK grassland management. The unit is suitable for installation in both offset and centre-mount rotary mower deck configurations.
Related Agricultural Gearbox Products
Alongside the HC-19455-KW, our range includes aluminium-cased worm gearbox solutions engineered for weight-critical agricultural applications where corrosion resistance and reduced inertia are priorities. These units complement the lawn mower series in complete machine drivetrain configurations.
HC-RV022 (X) Aluminum Box Series Gearbox
Lightweight aluminium-cased worm reduction gearbox suited to compact implement drives where mass reduction is critical. Designed for agricultural equipment operating across UK light soils and greenhouse installations.
HC-RV010 Aluminum Box Series Gearbox
Compact aluminium worm gearbox series for seed metering, fertiliser spreading, and auxiliary implement drives on smaller UK farm tractors. Self-locking worm geometry prevents back-driving under load.
Kundens succeshistorie
Yorkshire, United Kingdom — Agricultural Contractor
Client: Broadfield Agricultural Services Ltd, North Yorkshire — a regional contracting business managing approximately 1,200 hectares of grassland across 14 farm clients in the Vale of York and Howardian Hills area.
Challenge: Their fleet of five rotary mower units was suffering repeated gearbox failures from a previous supplier — particularly at the start of hay season when daily working hours could exceed 10 hours per machine. The original gearboxes were running hot, leaking oil, and failing at the bearing seats within a single season.
Solution: After consulting with our UK technical team, Broadfield retrofitted all five machines with the HC-19455-KW lawn mower gearbox. The ɸ25 optical axis interface matched their existing driveline without modification, and the installation took under two hours per machine.
Outcome: Through two complete hay seasons, zero gearbox failures were recorded. Oil temperature in the gearbox housing remained within acceptable limits even during extended summer operations. Broadfield has since ordered a consignment of spare units for inventory, citing total cost of ownership as significantly lower than their previous supplier.
Hvad vores kunder siger
“We’ve been running three HC-19455-KW units through an entire season on our Claas and New Holland combination — not one issue. The ɸ25 shaft fit our existing drivelines straight out of the box. Delivery to Lincolnshire was faster than expected too.”
James Holton
Farm Manager — Lincolnshire Arable, UK
“I source replacement agricultural gearboxes for about 40 machines across various clients in the Scottish Borders. The HC-19455-KW has become my go-to unit for 540 PTO lawn mower drives — it’s well-made, the price is competitive, and technical data is readily available.”
Callum Rennie
Agricultural Parts Distributor — Scottish Borders
“We specified this gearbox for a new deck mower design we’re manufacturing for the municipal market. It passed our in-house load testing at 20 HP sustained without any thermal creep or backlash increase. Exactly what we needed for a machine going into local council contracts.”
David Marsh
Product Engineer — Agricultural OEM, West Midlands
Vores produktionsanlæg og specialfremstillede ingeniørkapacitet
The HC-19455-KW is produced in our dedicated agricultural gearbox manufacturing facility, equipped with CNC gear hobbing machines, coordinate measuring equipment, and precision heat-treatment furnaces. Every unit passes through a full loaded run-in test before dispatch, verifying noise levels, temperature rise, and oil seal integrity under simulated working conditions.
We operate a comprehensive product customisation service that allows UK agricultural machinery OEMs and implement designers to specify modified versions of the HC-19455-KW. Custom options include: alternative shaft diameters (ɸ20 to ɸ35), modified housing geometries for tight envelope installations, alternative ratio configurations (1.25:1, 1.5:1), keyway or splined shaft interfaces, additional oil drain/fill positions, and powder-coat colour matching for branded equipment. All customised units are manufactured to the same quality standards as the standard product, with full dimensional drawings and test certificates provided.
Ofte stillede spørgsmål
Ready to Source the HC-19455-KW for Your Operation?
Contact our UK-focused agricultural gearbox team for pricing, lead times, and customisation options.
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