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PTO Gearboxes › HC Series › HC-LF211
HC-LF211 PTO Speed Increaser Gearbox
20HP • 1:2.83 Ratio • 540 rpm • UK Agricultural & Industrial Supply
The HC-LF211 is a field-proven PTO gearbox engineered for British farming and light industrial operations. Delivering a precise 1:2.83 speed increase from a standard 540 rpm tractor PTO, it is one of the most specified speed-increaser units among agricultural contractors, OEM machinery builders, and groundcare equipment dealers across England, Scotland, Wales, and Northern Ireland.
Built around a compact single-stage helical gear transmission, the HC-LF211 PTO gearbox converts standard tractor output into the higher rotational speeds demanded by modern agricultural implements and light industrial machinery. At just 14.5 kg net weight, it installs cleanly into both OEM builds and retrofit scenarios. The 1 3/8 Z6 input spline mates directly with virtually all mid-range British tractors — from Massey Ferguson and New Holland to Fendt and John Deere — without adaptors, reducing on-farm installation time to a minimum and making it a practical first choice for UK agricultural engineering contractors managing diverse equipment fleets across varied terrain and seasonal conditions.
Technical Specification
Dimensional Drawing
Engineering drawing for reference during OEM integration and installation planning. Contact our team for CAD files and DXF exports.
How It Works — Operating Principle & Construction
The HC-LF211 operates on a direct single-stage helical gear transmission principle. Rotational energy enters through the 1 3/8 Z6 spline shaft at 540 rpm. The input gear, carrying 34 teeth, meshes with a 12-tooth output pinion — the mathematical relationship between these two tooth counts generates the 1:2.83 speed increase that defines the HC-LF211’s character. The output exits through an optic (smooth) axis, which then drives the attached implement or machine at approximately 1,528 rpm. The helical tooth geometry means contact between gears is graduated rather than abrupt, substantially reducing the shock loading that destroys lesser gearboxes under continuous agricultural duty. Oil splash lubrication bathes all rotating components throughout operation, ensuring that even during sustained high-load periods — typical of UK contracting work during harvest or land clearance seasons — bearing and gear temperatures remain well within design limits. The entire assembly is sealed against the ingress of dust, crop debris, and moisture, a non-negotiable requirement given British field conditions throughout autumn and winter months.
Material Breakdown
Key Advantages of the HC-LF211
Precision Helical Gearing
The ground helical gear profiles produce smooth, progressive meshing that reduces noise, limits heat build-up, and extends service life — critical for UK contractors running equipment across long shifts throughout the growing and harvesting calendar.
Universal PTO Compatibility
The standard 1 3/8 Z6 input spline fits directly onto virtually all 540 rpm tractor PTO stubs common in the UK market. No additional coupling hardware is required, allowing a single fitter to complete installation in under an hour on most implements.
Robust Sealed Construction
NBR lip seals at all shaft exits prevent oil loss and stop the ingress of moisture and agricultural dust — both of which are abundant in British field conditions. The ductile iron housing provides the rigidity and shock-damping needed to survive daily use on rough ground.
Compact, Lightweight Build
At 14.5 kg, the HC-LF211 is light enough to handle without lifting equipment during swap-outs and doesn’t compromise the implement’s centre of gravity — a genuine operational advantage for groundcare and machinery dealerships working across mixed terrain in Wales and Northern England.
Where the HC-LF211 PTO Gearbox Performs Best
From the arable lowlands of East Anglia to the hill farms of Cumbria and the market gardens of Kent, the HC-LF211 consistently delivers. Its combination of 20HP rated power, 540 rpm input compatibility, and optic axis output makes it a natural match for the following applications across the UK agricultural and light industrial landscape — especially where a step-up in rotational speed is needed to reach the designed working speed of a driven machine.
Flail Mowers & Mulchers
PTO Generators
Irrigation Pumps
Wood Chippers
Light Industrial Drives
Rotary Cultivators
Customer Success Stories
Verified feedback from B2B clients across the United Kingdom — agricultural contractors, OEM builders, and machinery distributors who rely on the HC-LF211 in professional service.
★★★★★
Agricultural Contracting
“We fitted the HC-LF211 to three of our flail mower heads going into last spring’s season, replacing older units that kept failing under the sustained workload of our contracting operation. The improvement in running smoothness and noise level was noticeable from the first day. We have now logged over 600 hours across the three units with no issues whatsoever — no oil leaks, no heat-related shutdowns, nothing. The 14.5 kg weight is also genuinely practical; our fitters can swap units without the crane, which saves us real time in the field. We placed an order for four further units ahead of next season.”
★★★★★
PTO Generator OEM
“We build bespoke PTO generator packages for remote site power supply in the North Sea support and offshore logistics sector. The HC-LF211 has become our standard speed-increaser component because the 1:2.83 ratio and 540 rpm input gives us exactly the output speed our generator heads need without any secondary conditioning stage. Lead times from the team have been consistent throughout our relationship, and we have not had a single warranty claim across more than a dozen installed units deployed since 2023. A reliable and professional B2B supply partner who genuinely understands what our sector requires.”
★★★★★
Machinery Distribution & OEM
“We cover the mid-Wales region and Brecon Beacons area for groundcare equipment sales and servicing. After a poor experience with a previous supplier’s speed-increaser units, we switched our wood chipper product line to the HC-LF211 about two years ago. The build quality difference is quite clear when you put the two side-by-side — the sealing especially stands out for us, because we deal with some very wet operating environments along the Welsh borders. Our customers are reporting noticeably longer service intervals and we have had zero returns. The factory’s customisation programme has also been valuable for our OEM clients who need bespoke shaft arrangements.”
Factory Capabilities & Custom PTO Gearbox Solutions
Behind the HC-LF211 is a manufacturing operation with over 18 years of focused engineering experience in PTO gearbox design and production. Our facility runs CNC gear-grinding centres capable of achieving tooth-profile tolerances well within AGMA Class 10 standards, alongside fully automated carburising and case-hardening furnace lines and CMM inspection bays that verify every gear set before it enters assembly. This depth of in-house capability — rarely found outside tier-one supplier organisations — is what allows us to offer genuine engineering customisation rather than simple catalogue variants. For UK OEM manufacturers, agricultural machinery distributors, and construction equipment builders, our customisation service covers modified speed ratios beyond the standard 1:2.83, alternative spline and stub configurations, extended sump versions for higher continuous-duty oil capacity, custom flange bolt patterns, specialist surface treatments for corrosive or abrasive environments, and private-label branding and packaging for distributors building their own equipment ranges. Our engineering team works directly alongside your design department from initial concept through prototype validation to full batch production, supported by long-term supply framework agreements that protect your production schedules and cost base.
Frequently Asked Questions
What is the best PTO speed increaser gearbox for a 20HP agricultural implement connected to a 540 rpm tractor PTO in the UK?
For UK-based agricultural operations running a standard 540 rpm PTO at up to 20HP, the HC-LF211 is a directly compatible solution. Its 1:2.83 ratio is fixed in a single-stage helical gear arrangement, and the 1 3/8 Z6 input spline connects without adaption to virtually all British and European tractor models. It is particularly well regarded among contractors using mid-range tractors from Massey Ferguson, New Holland, and John Deere across England and Scotland.
How much does the HC-LF211 PTO gearbox cost, and how do I get a bulk order price from a UK supplier?
Pricing for the HC-LF211 depends on order volume, shipping destination within the UK, and any customisation requirements. We encourage British buyers — whether purchasing as a single unit or placing a seasonal batch order — to contact our commercial team directly at [email protected] for a formal, no-obligation quote. Standard lead times for off-the-shelf units typically run between 15 and 30 working days, with express options available for stocked configurations.
Which agricultural machinery and implements in England and Scotland are compatible with the HC-LF211 gearbox 1:2.83 ratio?
The 1:2.83 ratio of the HC-LF211 makes it an ideal match for implements that require an output speed of approximately 1,528 rpm from a 540 rpm tractor PTO. In practical terms across British farms and contracting businesses, this covers flail mowers, mulchers, wood chippers, rotary cultivators, irrigation pump drives, and PTO-driven generator sets. It is also used extensively in light industrial drive applications by OEM machinery builders across England and Scotland.
Where can I find a reputable PTO gearbox supplier in the UK who offers custom gear ratio modifications and OEM private-label options?
UK OEM manufacturers and machinery distributors requiring modifications beyond the standard HC-LF211 specification — including different ratios, alternative shaft configurations, extended housings, or private-label packaging — can contact our engineering and commercial team at [email protected]. We work directly with your technical team from initial drawing review through prototype sign-off to full production, typically returning an initial technical and commercial proposal within 2–3 business days of receiving your enquiry.
When should I service or replace the HC-LF211 PTO gearbox, and what maintenance schedule is recommended for continuous-use farm operations across wet regions like Wales and Northern Ireland?
For heavy-duty continuous use, we recommend checking the HC-LF211 oil level and seal condition every 250 operating hours, with a full gear oil change at 500 hours or at the conclusion of each working season — whichever comes sooner. In persistently wet environments typical of Wales, Northern Ireland, and the West of Scotland, we advise more frequent seal inspections, as repeated water exposure can accelerate lip seal degradation if the unit is also subject to impact loading. Any increase in operational noise, vibration, or oil weeping around shaft exits should be assessed by a competent agricultural engineer before the unit is returned to service.
Ready to source the HC-LF211 for your contracting fleet, OEM production line, or machinery distribution catalogue?
Our commercial and engineering team serves UK buyers with fast response times and honest technical advice.
✉ Contact Us: [email protected]
edit by gzl
