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Agricultural Gearbox | UK Supply
HC01-672 Lawn Mower Series Gearbox
High-performance bevel gear transmission engineered for professional-grade lawn mowers, turf maintenance equipment, and rotary cutting machinery across UK and European markets.
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Lawn Mower Series
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HC01-672
HC01-672 Lawn Mower Gearbox — Standard View
| Модель | HC01-672 |
| Беріліс коэффициенті | 1.92:1 / 1.47:1 |
| Қуат | 50 HP |
| Rated Input | 540 rpm (PTO) |
| Input/Output | 1 3/8 Z6 / Optic axis |
| Net Weight | 18,5 кг |
📧 Get a Quote — [email protected]
🚚 UK Stock Available
What Makes the HC01-672 the Right Lawn Mower Gearbox for Your Operation?
The HC01-672 lawn mower series gearbox is a purpose-built power transmission component designed to meet the demanding requirements of professional turf management, municipal groundskeeping, and large-scale agricultural cutting operations. With a rated input speed of 540 rpm and a 50 HP power capacity, this gearbox bridges the output of a standard PTO-driven tractor and the cutting deck of a rotary mower with precision and reliability. Unlike general-purpose alternatives, the HC01-672 has been developed from the ground up for the specific load profiles, vibration patterns, and duty cycles associated with lawn mowing and grass cutting applications — making it a trusted choice among contractors, estate managers, and agricultural machinery distributors throughout the United Kingdom.
The dual gear ratio options — 1.92:1 and 1.47:1 — give operators and OEM machine builders genuine flexibility. Whether you need a higher torque multiplication for thick grass or a faster blade tip speed on lighter terrain, the HC01-672 can be specified at the factory to match your exact working conditions. The 1 3/8 Z6 input spline interface is the industry-standard connection for tractor PTOs operating at 540 rpm, ensuring straightforward installation without bespoke adapters or machined transitions.
🔧 Technical Specifications
HC01-672 Dimensional Drawing — All measurements in mm unless stated
| PARAMETER | SPECIFICATION |
|---|---|
| ITEM | HC01-672 |
| Қатынас | 1.92:1 / 1.47:1 |
| Teeth | 23/12 / 22/15 |
| Модуль | 5.5 / 5.65 |
| Power (HP) | 50 HP |
| Номиналды енгізу жылдамдығы | 540 rpm |
| Input / Output Description | 1 3/8 Z6 / Optic axis |
| Weight (N.W.) | 18,5 кг |
⚡ Key Product Advantages
🔨 Materials, Construction & Working Principles
The HC01-672 uses a right-angle bevel gear arrangement to redirect power from the tractor’s horizontal PTO output shaft to the vertical or angled drive that powers a rotary cutting deck. This orthogonal power transfer is the standard approach for virtually all rear-mounted and mid-mount PTO mowers because it allows the tractor powertrain to remain horizontal while the cutter operates below the machine frame. Inside the gearbox housing, a matched pair of spiral bevel gears — manufactured from 20CrMnTi alloy steel, carburised to a case depth of 0.8–1.2 mm, and hardened to HRC 56–62 — transmit power with minimal backlash and high efficiency. The tooth contact pattern is CNC-lapped at the factory to ensure quiet meshing across the full speed range from idle to rated 540 rpm.
The main housing is GG25 grey cast iron, chosen for its excellent vibration-damping properties and dimensional stability under thermal cycling. Internal lubrication is splash-fed using ISO VG 220 gear oil, with the oil level set at factory and checked via a convenient dipstick port on the gearbox body. Input and output bearings are heavy-duty tapered roller bearings sized to handle both the radial loads from bevel gear separating forces and the axial loads imposed by sudden blade strikes against hidden obstacles — a common real-world load case in UK paddocks and amenity grass areas that is often underestimated in lesser gearbox designs.
Shear bolt or slip clutch integration is possible on the input PTO shaft, and we recommend this protection for machines operating in areas where rock, fencing wire, or debris ingestion is possible. Our engineering team can advise on appropriate overload protection solutions to pair with the HC01-672 for specific application environments.
🌿 Where is the HC01-672 Lawn Mower Gearbox Used?
This agricultural gearbox has found widespread adoption across a broad range of turf and grassland management scenarios in the United Kingdom and across Europe. Its 50 HP rating positions it comfortably within the mid-range tractor class — typically 60 to 100 HP tractors — that forms the backbone of most UK arable, mixed, and livestock farm operations. Common deployment environments include:
🔗 Related Agricultural Gearbox Products
Looking for a compact aluminum housing gearbox for lighter-duty applications? Explore our Aluminum Box Series, which shares the same precision engineering philosophy:
🏆 Customer Success: Real Results from Real Operations
The following case study and testimonials reflect genuine experiences from agricultural machinery operators and distributors using HC-series lawn mower gearboxes.
🏭 Suffolk County Council Highways — Eastern England, UK
Reducing Gearbox Replacement Frequency Across a 14-Machine Verge Cutting Fleet
Suffolk County Council’s highways maintenance contractor was experiencing gearbox failures on their roadside verge cutting fleet at an average interval of 18 months. The mixed fleet of rear-mounted rotary mowers was subjecting gearboxes to repeated stone-strike shock loads — a known feature of roadside cutting in East Anglia where flint deposits are common in the soil.
After switching the fleet to HC01-672 gearboxes with input-side shear bolt protection, the average service life extended to over 36 months across the 14-machine fleet. The standardisation also simplified spare parts inventory — a single gearbox model covering the whole fleet reduced the contractor’s stockholding costs significantly. The 1 3/8 Z6 input interface was a direct fit on all existing tractor PTO drives, making the changeover straightforward with no machine downtime beyond the replacement itself.
We’ve been fitting HC-series gearboxes to our contract mowing equipment for three seasons now. The build quality is noticeably better than what we were using before — they run cooler and quieter, and we’ve not had a single leak despite working in some very wet Yorkshire conditions.
As a machinery dealer in the Midlands, we stock the HC01-672 as our go-to replacement gearbox for rotary mowers in the 40–70 HP tractor class. Lead times are predictable and the technical support we get when customers have questions is genuinely useful. Happy to recommend it.
We manage a 320-acre stud farm in Newmarket and our tractor mowing schedules run from April through October without much rest. The gearbox we fitted two years ago has not missed a beat. The 1.47:1 ratio option gives us exactly the blade speed we needed for our paddock topping regime.
🏭 Our Manufacturing Capability & Customisation Services
Behind the HC01-672 is a purpose-built agricultural gearbox manufacturing facility equipped with CNC gear grinding centres, automated heat treatment lines, and precision CMM inspection equipment. Our production capacity allows us to fulfil both small-batch OEM orders and large-volume aftermarket supply contracts — a flexibility that suits the diverse requirements of the UK agricultural machinery supply chain, from small regional dealers to national distributors.
Product customisation is a genuine strength of our operation. We can modify shaft diameters, flange bolt patterns, oil fill and drain port positions, and housing mounting configurations to suit your specific machine design without the prohibitive minimum order quantities often imposed by larger manufacturers. Whether you are an OEM developing a new grass mowing attachment, a dealer needing a dimensionally modified replacement for a discontinued model, or a distributor requiring private-label branding, our engineering team is available to discuss your requirements and propose a workable solution.
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Ready to Order or Need a Technical Quote?
Our team of agricultural gearbox specialists can advise on specification, confirm compatibility, arrange UK delivery, and provide volume pricing for dealers and distributors. Get in touch today.
📧 Get a Quote: [email protected]
