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Agricultural Gearbox | UK & Global Supply
HC-GS4RC Lawn Mower Series Gearbox
A 30 HP, 540 rpm-rated right-angle transmission solution engineered for the most demanding field operations — built with British and European agriculture in mind.
What Is the HC-GS4RC Agricultural Gearbox?
The HC-GS4RC agricultural gearbox is a compact, high-efficiency right-angle transmission unit designed to handle the power demands of modern tractor-mounted and self-propelled implements. Rated at 30 HP with a standard PTO input speed of 540 rpm, it offers two ratio options — 1:1.46 and 1:1.93 — making it a versatile agricultural gearbox for a wide range of harvesting, cultivation, and processing applications. The 13/8 Z6 taper spline input/output configuration ensures a secure, standardised connection that aligns with ISO and ASAE standards common across UK and European farm machinery fleets.
At Ever-Power, this agricultural gearbox model has been refined through real-world field feedback from users in the United Kingdom, Germany, France, and Australia. The HC-GS4RC strikes the balance between compact form factor and robust load capacity — an increasingly important consideration as farm machinery grows more powerful yet space-constrained. Whether you are integrating it into a purpose-built header drive, a row-crop processor, or a conveyor system on a combine platform, the HC-GS4RC agricultural gearbox delivers consistent, reliable power transfer with minimal maintenance demand.
Why This Agricultural Gearbox Stands Apart
Dual Ratio Flexibility
With 1:1.46 and 1:1.93 options available in the same housing, operators can adapt output speed to suit header drives, threshing rotors, or auger systems without changing the gearbox itself.
Hardened Gear Tooth Profile
Module 5.08 / 5.0 bevel gears with a 22/15 and 23/12 tooth count are precision-ground and heat-treated to maintain mesh geometry under full-load field conditions, even in wet or abrasive harvesting environments.
19 kg Compact Footprint
At just 19 kg, this agricultural gearbox is light enough to reduce header weight balance issues on trailed machinery while still handling 30 HP continuous PTO input — a well-engineered compromise for UK row-crop platforms.
Taper Spline Interface
The 13/8 Z6 taper spline shaft interface is a globally recognised standard used by leading OEMs. This allows seamless integration with existing driveline components and reduces the need for costly adaptors on retrofit installations.
OEM-Grade Sealing
Dual-lip oil seals and a precision-machined cast iron housing minimise lubricant migration even during long operating cycles. This is especially valuable in UK grain harvesting where machinery runs continuously through wet, early-morning crop conditions.
Tekniske specifikationer
All parameters below are measured at standard factory settings. Contact us if your application requires modified shaft extensions, altered gear ratios, or mounting flange variations.
| Parameter | Værdi |
|---|---|
| Item / Model | HC-GS4RC |
| Forhold | 1:1.46 / 1:1.93 |
| Tænder | 22/15 / 23/12 |
| Modul | 5.08 / 5.0 |
| Power (HP) | 30 HP |
| Nominel indgangshastighed | 540 rpm |
| Input / Output Interface | 13/8 Z6 — Taper Spline |
| Net Weight | 19 kg |
Engineering Drawings
Materials, Construction & Working Principle
Housing & Casting
The HC-GS4RC housing is precision-cast from ductile grey iron, providing the rigidity needed to maintain bearing alignment under shock loading — a common occurrence during crop intake in straw and cereal harvesting. The machining tolerances on all bore faces are held to within 0.02 mm, which directly contributes to quieter operation and longer bearing life.
Gear Material & Heat Treatment
Bevel gears are forged from 20CrMnTi alloy steel — the same material class used in automotive transmissions. After hobbing and shaving, each gear set undergoes carburising and quenching to achieve a surface hardness of 58–62 HRC, with a core toughness that resists impact fracture. The result is an agricultural gearbox that maintains its mesh accuracy and load rating across a full season without requiring gear replacement.
Power Transmission Principle
The HC-GS4RC operates as a right-angle bevel gearbox: input torque arrives via the taper spline input shaft and is transferred through a matched bevel gear pair to an output shaft oriented at 90 degrees. This configuration allows mounting in tight header frames where an inline drive shaft would be impractical. The selected gear module (5.08 or 5.0 depending on ratio variant) ensures the contact ratio stays above 1.2 under rated load, distributing stress across multiple teeth at all times.
Lubrication & Sealing
An oil-bath lubrication system ensures the bevel gear mesh is continuously fed with EP 80W-90 gear oil. Tapered roller bearings on both shafts are pre-loaded during assembly, eliminating end-play without over-constraining thermal expansion. The breather plug prevents internal pressure build-up during long operating hours, a detail that many lower-cost alternatives overlook — resulting in seal failure and contamination.
Application Scenarios in Agricultural Machinery
The HC-GS4RC agricultural gearbox delivers proven performance across a broad spectrum of field implements. Below are some of the principal platform types where it is currently deployed or spec’d as a service replacement unit in the UK and broader European markets.
Grain Header Drives
The 1:1.46 ratio variant is widely used on combine header drives where a moderate speed step-up maintains reel timing relative to ground speed. Common in Lincolnshire and East Anglian cereal operations.
Sugarcane Harvesters
For platforms requiring an elevator or slew mechanism, the HC-GS4RC agricultural gearbox integrates with systems such as the Præcisions-elevatordrejegearkasser til sukkerrørshøstere med høj kapacitet.
Base Cutter Systems
High-torque base cutter heads in cane harvesters rely on a dedicated gearbox to handle the intermittent shock loading of cutting through dense stalks. See how this fits: Basisskærergearkasse til sukkerrørshøstere: Præcisionskraft til det hårdeste snit.
Straw & Forage Choppers
Right-angle drive is essential in rear-discharge choppers where the rotor axis runs perpendicular to the PTO shaft. The HC-GS4RC agricultural gearbox provides a clean, sealed solution for this layout.
Row Crop & Vegetable Harvesters
In UK potato and beet harvesters — where seasonal use at full power is intense but intermittent — this agricultural gearbox meets the durability requirements without over-engineering cost into the machine.
Kundesucceshistorier
Real results from agricultural machinery operators who rely on our agricultural gearbox solutions.
“We replaced the original gearbox on our combine header after just two seasons of failures with a competitor unit. The HC-GS4RC has now run through three full harvests without a single oil leak or noise complaint. The taper spline fit was perfect — no adaptor needed.”
James H. — Farm Machinery Manager, Lincolnshire, UK
Cereal Harvesting / Combine Header Drive
“Our workshop in the Netherlands sources agricultural gearboxes for several Belgian and Dutch OEMs. We switched to the HC-GS4RC for its dual-ratio availability — we can stock one part number and serve two different machine platforms. Lead time from Ever-Power was 12 days, which surprised us given the MOQ.”
Pieter V. — Procurement Director, Agricultural OEM, Netherlands
Straw Chopper & Forage Platform Manufacturing
“We operate a fleet of beet harvesters across Cambridgeshire and Norfolk. When we needed an agricultural gearbox upgrade during the season, Ever-Power’s UK distribution partner had HC-GS4RC stock on hand. Installation was straightforward and the machines ran right through to November without issues.”
Sarah T. — Fleet Operations Lead, Cambridgeshire, UK
Sugar Beet Harvesting / East of England
Our Manufacturing Capability & Customisation Services
Ever-Power’s dedicated agricultural gearbox production facility in Hangzhou operates across multiple CNC machining centres, hobbing lines, and heat treatment furnaces — all housed under one roof for full process control. Our engineering team works directly with OEM customers and after-market distributors to develop non-standard variants of the HC-GS4RC and related products. Whether you need a modified shaft extension to suit a particular header frame, an altered mounting flange pattern for a proprietary platform, or a custom gear ratio to optimise rotor speed at a non-standard PTO rpm, our in-house design team can translate your requirements into production drawings within days.
We currently supply agricultural gearbox units in batch quantities from 10 pieces to 5,000+ per run, with consistent lead times and documented QC inspection reports available for each shipment. Surface coating options include standard paint, powder coat, and anti-corrosion e-coat suitable for UK outdoor storage and marine transit.
Supplying Agricultural Gearboxes to the UK Market
The United Kingdom remains one of the most mechanised agricultural markets in the world, with a high density of combine harvesters, self-propelled forage harvesters, and specialist root crop machines per hectare of arable land. Farming regions such as East Anglia, the East Midlands, and Yorkshire operate equipment fleets that require reliable after-market access to agricultural gearbox components — often during tight seasonal windows where downtime costs are extremely high.
Ever-Power works with UK agricultural parts distributors, independent repair workshops, and farm machinery dealers to ensure that HC-GS4RC units are accessible when they are needed most. We support UKCA / CE-adjacent documentation requirements and provide full material certification traceability for customers who require it under their own supplier approval processes. Our export packing is designed to protect against the transit conditions common on FCL and LCL sea freight routes from China into Felixstowe and Southampton.
For UK buyers requiring competitive pricing on quantities from 10 to 500 units, or looking to establish a stocking arrangement ahead of harvest season, we encourage you to get in touch directly. Our team responds to all UK enquiries within one business day.
Ofte stillede spørgsmål
What is the price or cost of the HC-GS4RC agricultural gearbox when ordering from a UK supplier?
Pricing for the HC-GS4RC agricultural gearbox depends on order quantity, ratio variant, and any custom modifications required. We do not publish a fixed list price as exchange rates, shipping modes (air freight vs sea freight), and duty implications vary significantly for UK buyers post-2021. We recommend contacting us directly at [email protected] for a detailed quote with DDP or FOB pricing options clearly stated.
Which agricultural machinery applications in the UK are most suited to the HC-GS4RC gearbox?
The HC-GS4RC is particularly well suited to grain combine header drives, straw chopper rotor drives, sugar beet elevator gearboxes, and forage harvester secondary drives. In the UK context, it is most commonly found in East Anglian and East Midlands cereal and root crop platforms where 30 HP right-angle PTO drives are standard architecture. It can also be used in specialist vegetable harvesting equipment operating in Lincolnshire and Kent.
How do I get a quote for the HC-GS4RC agricultural gearbox from a reliable manufacturer for a UK farm machinery business?
The simplest way to request a quote is to email [email protected] with your required quantity, preferred ratio (1:1.46 or 1:1.93), delivery address (UK mainland or Northern Ireland affects duty treatment), and any specific technical requirements. Our commercial team will respond within one working day with a full quotation including unit price, freight cost, and lead time estimate.
What gear oil is recommended for the HC-GS4RC agricultural gearbox operating in cold UK winter field conditions?
We recommend EP 80W-90 GL-4 or GL-5 gear oil as the standard lubricant for the HC-GS4RC. In UK conditions where operating temperatures in late autumn or early spring can fall below 5 degrees Celsius before the machine warms up, a synthetic or semi-synthetic 75W-90 GL-5 oil is a good choice as it offers better low-temperature viscosity behaviour without compromising film strength at running temperature. Change interval should be set at 250 operating hours or once per season, whichever comes first.
Where can I find a verified supplier of HC-GS4RC agricultural gearboxes that ships to England, Scotland, or Wales?
Ever-Power (agriculturalgearboxes.top) is the verified OEM source for the HC-GS4RC agricultural gearbox. We ship directly to UK buyers and work with UK-based parts distributors. All units are shipped with a full inspection report, gear ratio confirmation, and weight certificate. Shipments to UK buyers are typically routed via air freight for urgent orders or sea freight (FCL/LCL) for scheduled stock orders.
Can the HC-GS4RC agricultural gearbox be customised with a different shaft length or mounting configuration for a specialist UK OEM platform?
Yes, Ever-Power offers a comprehensive customisation service for the HC-GS4RC and other agricultural gearbox models. Options include extended or shortened shaft lengths, alternative flange bolt patterns, modified seal specifications for specific dust or moisture environments, and in some cases, non-standard gear ratios outside of the standard 1:1.46 and 1:1.93 variants. Please contact our engineering team with your drawing or specification sheet to discuss feasibility and minimum order quantity for custom variants.
Ready to Source the HC-GS4RC Agricultural Gearbox?
Contact our team for competitive pricing, technical advice, and fast delivery to the UK. We work with farm machinery dealers, distributors, and OEM manufacturers across England, Scotland, and Wales.
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