The Workhorse Behind Every Efficient Mixing Wagon

The Vertical Feed Mixer Gearbox PGA1602VM is engineered to replace the original Comer PGA1602VM unit without compromise. Built for the relentless demands of British agricultural operations, it handles everything from single-drum mixers in the 10–14 m³ range to large double-drum wagons at 16–24 m³. Whether you’re running a beef or dairy enterprise in Yorkshire, a large arable enterprise in East Anglia, or a mixed farm across the Scottish Borders, this gearbox delivers consistent rotational output day after day. Its cast iron housing resists impact, corrosion, and the abrasive dust conditions inherent to feed yards. The design incorporates a special integrated bearing assembly so the screw spindle connects directly — saving you the cost and complexity of a separate bearing complete for the winch. This matters in the field: fewer components means fewer failure points, faster servicing, and less unplanned downtime during the critical winter feeding season.

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Direct Bolt-On Replacement

Engineered to the same interface dimensions as the original Comer PGA1602VM. No custom adapters or machining required — reducing downtime dramatically for UK farms running Trioliet, Kuhn, Storti, and Jaylor wagons.

Integrated Bearing Assembly

The screw spindle connects directly to the gearbox — no separate bearing complete needed for the winch. This integrated solution lowers the total bill of materials, speeds up installation, and reduces the risk of misalignment that plagues multi-component setups.

Low Long-Term Maintenance Cost

The initial oil change is required at 50–70 hours, with subsequent intervals at 500–700 hours or annually — whichever comes first. For most UK livestock enterprises averaging 400–600 operating hours per year, this means just one scheduled service per year under normal conditions.

Durabilidade do ferro fundido

The cast iron housing absorbs the shock loads generated when mixing fibrous silage, root crops, and dry mineral components. In practice this means the housing resists cracking and distortion even when the wagon runs in uneven farmyard conditions or encounters foreign objects in the feed charge.

High-Torque Power Transfer

With a peak output torque of 1570 daNm and an output power of 88.7 kW, this gearbox handles the toughest TMR (Total Mixed Ration) loads without slipping. The 20-spline 1-3/4-inch input interface is fully compatible with standard Category 4 PTO drive lines used on 100–200 HP tractors common across the UK.

B2B Trade Supply for UK Dealers

We supply agricultural machinery dealers, repair workshops, and farm contracting businesses across England, Scotland, Wales, and Northern Ireland. Competitive ex-works pricing with full technical documentation and a dedicated aftersales team available to advise on installation, compatibility, and custom configurations.

Dairy TMR Rations

High-yield dairy herds in Cheshire, Somerset, and Dumfries rely on precisely mixed TMR rations to sustain peak milk production. The PGA1602VM’s consistent output speed maintains the homogeneity of grass silage, maize, concentrates, and mineral blends across the entire 14–24 m³ charge without separation or layering.

Beef Finishing Units

Beef units in the Midlands and northern England feed large groups of finishing cattle on high-energy cereal and silage-based diets. The gearbox’s robust torque output handles root crops, baled silage, and straw additions with ease — supporting the demanding 2–3 feeds per day cycle typical of intensive finishing systems.

Sheep & Equine Feeding

For smaller-scale sheep enterprises and equine operations, the gearbox can run smaller 10–12 m³ single-drum wagons with equal reliability. The reduced charge weight means the gearbox runs well within its rated power envelope, extending service intervals and cutting total ownership cost for smaller UK holdings.

Fertiliser & Compost Blending

Beyond livestock nutrition, the PGA1602VM finds use in organic fertiliser blending and compost turning operations on larger arable and horticultural holdings. Its sealed cast iron construction resists the acidic and alkaline compounds found in composts and nitrogen-based fertiliser blends, making it a versatile workhorse year-round.

“We replaced our Kuhn wagon gearbox with the PGA1602VM and saw an immediate improvement in mixing consistency. Our vet has noticed better rumen fill scores across the herd since the change. The price was well below what the OEM dealer quoted.”

“As a machinery dealer in the Scottish Borders, we need a reliable source for gearbox replacements. agriculturalgearboxes.top has never let us down on lead times. The technical team answer compatibility questions promptly — that’s rare in this sector.”

“We operate a 600-cow intensive dairy in County Cork and ordered two PGA1602VM units as standby spares. Both arrived on schedule, packaged properly and without damage. Good quality castings and full documentation. We’ll reorder without hesitation.”

Pre-Install Safety Check

Park on level ground. Disengage PTO. Verify gearbox model compatibility against wagon type and tractor PTO speed rating before any work begins.

Mount the Gearbox

Align housing to the mixer mounting plate and torque all bolts to specification. Use thread-locking compound on high-vibration fasteners to prevent backing off during operation.

Connect PTO Drive Line

Engage the 20-spline 1-3/4-inch input to the tractor PTO stub. Confirm locking collar clicks before releasing. Check driveline angles remain within the manufacturer’s maximum deflection limit.

Fill with SAE 90 Oil

The gearbox is supplied dry. Fill to the correct level with SAE 90 gear oil before the first run. Record the fill date and hour-meter reading for the 50–70-hour first service interval.

Commission & Test Run

Start the tractor at low revs, engage PTO gradually, and listen for any abnormal noise. Run a half-load test cycle before committing to a full production batch. Re-check all fasteners after the first hour of operation.