Description
Vertical Feed Mixer Gearbox — Replacement of Comer PGA1202VM
A heavy-duty PTO-driven vertical feed mixer gearbox engineered to replace the Comer PGA1202VM. Built for UK farms, dairy operations, and commercial feed mills demanding consistent, high-torque mixing performance.
What Is the Vertical Feed Mixer Gearbox PGA1202VM?
The Vertical Feed Mixer Gearbox PGA1202VM is a precision-engineered power transmission unit designed to replace Comer Industries’ original PGA1202VM gearbox. Mounted directly to a tractor’s PTO shaft — operating at either 540 or 1000 RPM — it converts tractor engine output into the optimal speed and torque required for vertical auger-style feed mixing. Whether your operation runs a single mixer of 10–14 m³ or a twin-auger system of 16–24 m³, this gearbox delivers the mechanical muscle your mixing wagon demands.
Spécifications techniques
Why UK Farms Choose This Gearbox
Six performance advantages that justify the investment
Uniform, Consistent Mixing
The high-torque output ensures every batch is blended evenly from edge to core. Animals receive nutritionally balanced feed with each meal, which directly translates into improved daily weight gain, healthier livestock, and — for dairy herds — measurably better milk yields. No hot spots, no segregation of heavier ingredients.
High Mechanical Efficiency
Engineered to deliver maximum torque at the low output speeds that heavy feed mixing demands, this vertical feed mixer gearbox reduces cycle times and cuts PTO fuel burn. For farms running two or three mixing sessions per day, the savings in tractor hours quickly offset the initial replacement cost — a calculation UK operators repeatedly confirm.
Built for British Farmyard Conditions
Cast iron housing, hardened steel gears, and reinforced lip seals work together to handle the moisture, chaff, and fine dust that are unavoidable on UK dairy and arable farms. Whether you’re mixing silage-based TMR in a Yorkshire winter or processing dry concentrates on a Hampshire arable unit, this gearbox won’t flinch.
Simplified Maintenance Schedule
A well-documented oil change programme — first service at 50–70 hours, then every 500–700 hours or annually — keeps internal components in peak condition without complex tooling. The integrated spindle bearing removes one external assembly from the maintenance checklist entirely, shortening workshop time and reducing the stock of spare parts you need to hold on-site.
Versatile Application Range
From compact 10 m³ single-auger wagons used by family-scale farms to 24 m³ double-auger rigs on large commercial beef units, this gearbox covers the full spectrum of mixing wagon sizes. It’s equally at home powering livestock feed mixing, poultry ration blending, aquaculture pellet production, and even bulk fertiliser mixing operations.
Drop-In Comer PGA1202VM Replacement
Designed as a direct, dimensional replacement for the Comer PGA1202VM, this unit fits existing mounting points and PTO shaft interfaces without modification. Farms already running Kuhn, Trioliet, Jaylor, Storti, or Schuler mixing wagons can swap the gearbox without fabrication work, getting their machine back in service faster and minimising harvest-season downtime.
How It Works — Inside the PGA1202VM Gearbox
Power path from tractor PTO to mixing auger
PTO Engagement
The tractor operator engages the PTO lever, transferring rotational power at 540 or 1000 RPM through the drive shaft into the gearbox input.
Helical Gear Transmission
Hardened helical gears inside the cast iron housing reduce speed while multiplying torque — providing the low-speed, high-force output that heavy feed mixing demands without generating excessive heat.
Bearing Support
Precision-grade bearings carry radial and axial loads on both input and output shafts, reducing friction and preventing shaft deflection under full torque — critical for long service life in dusty farm environments.
Direct Spindle Drive
The output shaft connects directly to the mixer’s screw spindle via the integrated bearing assembly, eliminating intermediate couplings. This direct drive reduces power loss and mechanical play — producing crisper, more responsive auger control.
Sealed for Life
Reinforced oil seals and precision-fitted gaskets throughout the housing prevent lubricant loss and block contaminants. The cast iron casing acts as the final barrier, protecting the gear train from impact, vibration, and corrosive splashback.
Common Applications Across UK Agriculture
Where the Vertical Feed Mixer Gearbox PGA1202VM delivers real-world results
Beef & Dairy TMR Mixing
Powers total mixed ration (TMR) wagons on beef finishing and dairy units throughout England, Scotland, and Wales — ensuring each cow receives a consistently blended diet every time the wagon passes.
Poultry Feed Blending
Handles the specific bulk densities and finer textures of broiler and layer rations, delivering the precise, homogeneous blends required by modern poultry production protocols.
Aquaculture Feed Production
Used in fish feed pellet manufacturing where thorough integration of vitamins, minerals, and binders into a carrier matrix is essential for aquatic animal health and growth performance.
Fertiliser Blending
Heavy-duty mixing of compound fertiliser components requires the same torque characteristics as feed work. This gearbox handles abrasive granular inputs without excessive wear on the internal gear train.
Témoignages clients
Real operators. Real results.
Holt Green Farm, North Yorkshire — 320-Cow Dairy Unit
In early 2023, Holt Green Farm was running a 16 m³ double-auger Jaylor mixing wagon when the original Comer PGA1202VM gearbox began showing signs of bearing failure — intermittent noise on engagement and a progressive drop in mixing consistency. With the spring calving block approaching, the farm manager needed a fast, reliable solution that wouldn’t require the wagon to be sent away for re-engineering.
After ordering a replacement PGA1202VM-compatible gearbox through agriculturalgearboxes.top, the unit arrived within five working days. Installation was completed by the farm’s own mechanic in under three hours using standard workshop tooling, with no fabrication required. The integrated spindle bearing assembly was a particular advantage — it meant one fewer component to source separately and one fewer potential failure point going forward.
Twelve months on, the gearbox is performing without issue. The herd’s milk production has remained consistent, which the farm’s nutritionist attributes in part to the restored mixing uniformity. The total cost of gearbox replacement — including oil — was recovered in under two months relative to the projected decline in yield from uneven TMR.
“We run a 650-head beef finishing unit in Lincolnshire and can’t afford mixing wagon downtime during housing season. The replacement gearbox dropped straight in, oil filled, and it’s been faultless for eight months. Wouldn’t hesitate to order again.”
“Our original Comer box had done good years but finally gave out. The replacement from agriculturalgearboxes.top matched the original dimensions perfectly — no shimming, no adapters. The technical team answered all our pre-purchase questions promptly. Very professional service.”
“We supply agricultural machinery parts to farms across the East Midlands. The PGA1202VM replacement has become one of our regular lines — good quality, competitive price, and customers come back to us for the next one. Reliable supply chain, which matters to our trade business.”
Factory-Direct Supply with Full Custom Engineering Support
AGKNX manufactures vertical feed mixer gearboxes in a dedicated facility equipped for precision gear cutting, heat treatment, and dimensional inspection. Every unit passes load and leak testing before despatch. As a direct manufacturer, we eliminate the distributor margin — meaning UK buyers receive a gearbox that meets original Comer PGA1202VM specifications at a price that makes sense for both individual farm replacements and trade bulk orders.
Beyond standard replacements, our engineering team provides a genuine custom gearbox design service. If your application requires a non-standard shaft rotation, a modified gear ratio, a different input speed configuration, a custom mounting flange, or a specialised output arrangement — our technical staff will work through the specification with you from first enquiry to final drawing approval. We have supported bespoke builds for specialist feed wagon manufacturers, fertiliser processing companies, and agricultural OEM suppliers across the UK and Europe.
What We Can Customise
- ✓ Shaft rotation direction
- ✓ Input/output speed ratio
- ✓ Mounting position & flange pattern
- ✓ Input RPM (non-standard PTO)
- ✓ Torque and power rating
- ✓ OEM branding & bulk supply
Troubleshooting Common Gearbox Problems
Diagnose before you replace — a field guide for UK farm operators
Foire aux questions
Questions UK buyers ask before ordering a replacement feed mixer gearbox
What is the best replacement gearbox for a Comer PGA1202VM on a UK dairy farm mixing wagon?
The direct replacement for the Comer PGA1202VM is a vertcal feed mixer gearbox built to the same dimensional envelope and rated for the same PTO input speeds of 540 and 1000 RPM. The unit available through agriculturalgearboxes.top is specifically engineered as a drop-in substitute, with a cast iron housing and integrated spindle bearing assembly that eliminates the need for a separate external bearing unit — making it the preferred choice for UK dairy operations running Jaylor, Kuhn, Trioliet, or Storti mixing wagons.
How much does a replacement vertical feed mixer gearbox cost for a beef finishing unit in England, and how quickly can I get a price?
Pricing for PGA1202VM replacement gearboxes depends on specification, quantity, and any custom requirements. The fastest way to get an accurate quote for your beef finishing operation is to email [email protected] with your wagon model, current gearbox reference number, and the PTO speed you run. The team typically responds to UK enquiries within one business day. Volume pricing is available for trade buyers and machinery dealers.
Which oil type should I use when filling a vertical feed mixer gearbox for the first time on my Scottish farm?
The gearbox is supplied without oil and must be filled before first use. The recommended lubricant is a mineral or synthetic gear oil meeting ISO VG 220 or equivalent, depending on your operating temperature range. Scottish farms operating in cold winter conditions may benefit from a synthetic grade with better low-temperature fluidity. Contact our technical team for a specific oil grade recommendation based on your environment. The first oil change is due at 50–70 operating hours.
Where can I buy a vertical feed mixer gearbox for a Jaylor wagon in the UK, and do you supply trade accounts?
You can order directly from agriculturalgearboxes.top with UK-wide delivery. Trade accounts are available for agricultural machinery dealers, independent parts suppliers, and farm machinery repair workshops across England, Scotland, Wales, and Northern Ireland. Trade customers benefit from volume pricing, priority despatch, and dedicated account support. Send your business details to [email protected] to open a trade account.
Can a custom vertical feed mixer gearbox be designed with a non-standard gear ratio for a specialist fertiliser blending application in the UK?
Yes. AGKNX’s engineering team offers a full custom gearbox design service for applications that fall outside standard product specifications. For fertiliser blending, this might involve a modified gear ratio for a specific auger speed requirement, an alternative mounting flange, or a non-standard input RPM configuration. Share your application parameters — shaft rotation, required output speed, torque demand, and mounting constraints — with our technical team at [email protected] to initiate a custom design discussion.
How do I know when to replace rather than repair my feed mixer gearbox on a busy Welsh dairy unit?
Replacement is generally more cost-effective than repair when you’re seeing three or more concurrent failure indicators — such as persistent oil leaks, audible bearing noise, overheating during normal PTO loads, and progressive loss of mixing consistency. On a busy Welsh dairy unit where downtime directly affects milk production, the risk of a mid-season breakdown with a repaired gearbox often outweighs the cost of a new direct replacement. If you’re unsure, describe the symptoms to our team and we’ll give you an honest assessment.
Ready to Order or Need a Custom Specification?
UK farms, trade buyers, and OEM manufacturers — contact our technical team for pricing, availability, and custom design support. Fast response guaranteed.
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