Few things can disrupt your harvest more severely than your header sitting idle. It’s frustrating to deal with especially when you’re racing against weather windows and trying to capture big yields. 

But here’s the thing: Your header can process grain faster than ever and your trucks can haul more tonnes of grain per trip. But if you have to stop every time your header needs to unload, you’re wasting precious harvest time. The fastest way to eliminate header stoppages is to keep grain moving without slowing the machine.

Enter chaser bins. These towable trailers move with your harvest and collect grain while cutting. In this article, we’re going to cover why chaser bins are the smarter options for Aussie farmers.

What Chaser Bins Do and Why They Save You Time and Yield During Harvest

A chaser bin (also known as a grain cart) is a towable trailer that comes with a built-in auger system that collects grain simultaneously as your header keeps cutting. The bin stores the grain temporarily and transfers it to your truck or storage whenever convenient.

The setup is pretty simple. Your header unloads on the move. Your chaser bin follows along, collects the grain, then heads to waiting trucks while your header keeps working. This reduces delays and saves fuel you would have wasted from idled equipment in the paddocks.

According to SEPWA, combine harvesters spend up to 35% of harvest time unloading or travelling. That’s more than a third of your day lost to purely logistics instead of cutting crops. The maths get worse during tighter weather windows. Delayed harvesting creates yield losses of approximately 0.5% per day. You eliminate these productivity gaps with chaser bins helping you move grain without having your header stand idle.

Why GrainKing Chaser Bins Are Trusted by Australian Farmers

We build our Nyrex chasers specifically for Australian conditions. Here’s what sets our chaser bins apart.

Built Tough for Harsh Aussie Conditions

Australian paddocks need gear that can handle heat, dust, and rough terrain — all day. GrainKing’s chaser bins feature heavy-duty construction with hardened coating finishes that resist corrosion. The chassis design uses robust steel engineered to withstand the punishing conditions of broadacre farming.

All GrainKing bins come with new tyres rated for Australian field conditions, with float tyre options for wet or muddy ground, helping reduce soil compaction and maintain higher yields season after season.

Local manufacturing also means that parts and support are readily available. Should you run into issues during harvest, GrainKing’s dealer network ensures you can get the parts and support you need without waiting weeks for international shipping.

Bigger Capacity, Faster Unloads

Capacity matters. More grain means you need equipment that can keep pace with higher-capacity headers. GrainKing offers chaser bins ranging from 26,000L single-axle models up to 75,000L tri-axle units. That’s 18 to 62 tonnes of capacity, sized to match modern combine outputs without constant interruptions.

Our chaser bins come with an unloading system that helps improve your harvest. With a 22-inch diameter auger that can transfer up to 16 tonnes per minute, your unload times are cut by more than half. Faster unloading means your chaser bins spend more time in the field collecting grain instead of sitting at the truck.

Advanced Features that Make Harvest Easier

GrainKing includes hydraulic auger controls as a standard part of our chaser bins. You operate everything from the tractor cab without climbing on and off equipment repeatedly. The auger folds and unfolds hydraulically and the spout adjusts position for precise unloading.

Camera systems are also available on the spout with extra ones available as optional add-ons, providing visibility for the auger spout and bin interior. This, combined with the light on the spout, helps  especially during night harvesting when visual checks become more difficult. For example, operators can avoid auger overfill or spillage when topping up trucks in low-visibility conditions 

Light kits support operations after dark when weather windows demand extended harvest hours. The adjustable spout also lets you position grain discharge accurately when loading trucks or mother bins, reducing spillage and ensuring your trailers are filled evenly.

Safer Operation with Smart Design

GrainKing designs our bins with operator safety as a top priority: Ladder access provides secure entry points for inspection and maintenance. Protected hydraulic hoses route along the chassis away from snag points. Cleanout doors feature single-lever operations, reducing time spent inside the bin.

The low centre of gravity on our bins also improves stability during transport and operation. The leaf spring suspension on larger models helps maintain balance across challenging terrains. Our larger capacity models have brake systems that meet road transport requirements to ensure safe road transport between paddocks without compromising equipment longevity. These seemingly small design choices greatly reduce the risk of breakdowns, injuries, and costly delays during peak harvest periods.

Strong ROI and Long-Term Value

Chaser bins deliver clear ROI through improved efficiency and reduced crop loss. By reducing unload delays and keeping the header cutting continuously, many operators see up to a 35% improvement in harvest speed – effectively adding extra capacity without buying another header. 

Instead of needing a contractor for overflow work, you can complete the harvest using your own equipment. Time savings literally translate to cost savings. GrainKing’s Australian manufacturing and durable construction mean these bins hold value better than imported equipment. Many GrainKing bins achieve strong resale value after 5–7 seasons compared to imported models, which often depreciate faster due to parts availability and durability concerns.

Constructed with solid steel, quality components, and local parts ensure your investment maintains its resale value when you eventually meet the need to upgrade.

How to Choose the Right Chaser Bin for Your Farm

Choosing the correct chaser bin capacity and features will depend on what you need for your operation.

Farm size and header capacity drive your bin size requirements. If you’re running a modern header with a 10,000 to 20,000L hopper, you want a chaser bin that can collect multiple loads without returning to trucks constantly. Mid-sized and larger operations will require different capacities and axle models.

Crops harvested also determine which chaser bin you need. Different grains have different densities. Wheat, barley, and canola each weigh differently per volume. GrainKing provides capacity specs in both litres and tonnes to help you match the right bin size to your typical crop harvest.

Terrain and soil conditions determine whether you need standard tyres or float tyres. Farms with heavier soils or areas that are prone to wet conditions benefit from flotation tyres that reduce compaction and improve traction. The leaf spring suspension on larger bins also helps maintain stability on sloped ground or rough paddocks.

The towing capacity of your tractor must match the loaded weight of your chaser bin. GrainKing specifies minimum tractor horsepower for each bin size. A 25-tonne bin typically requires 230 horsepower minimum. A 30-tonne bin needs 280 horsepower.

Machinery compatibility considers your existing equipment setup. If you’re running tractors without PTO, hydraulic drive options are available. Make sure your tractor has sufficient hydraulic remotes to operate all bin functions.

Where to Find GrainKing Chaser Bins for Sale in Australia

GrainKing partners with dealers across Australian grain-growing regions, spanning from Queensland through New South Wales, Victoria, South Australia, and Western Australia. Connect with a local GrainKing dealer to get equipment demos and get expert advice on the correct capacity and features.

Before purchasing, ask your GrainKing dealer about:

• Lead times for delivery. It varies depending on model and current production schedules. Note that custom options or specific configurations may extend delivery timeframes.
• Transport logistics. Dealers can arrange delivery to your farm or recommend transport services if you’re purchasing from a distant location.
• Finance options. Many dealers work with agricultural finance companies that offer seasonal cash flow. Payment structures should align with your harvest revenue to reduce financial pressure during low-income periods.
• Warranty coverage. Protect your investment. Understand what’s covered, for how long and what maintenance requirements exist to maintain warranty validity.
• Demo opportunities. You can always ask for a demo before committing to purchase. Testing a chaser bin during harvest season provides real-world insight into capacity, unloading speed and ease of operation.

Upgrade Your Harvest Setup with a GrainKing Chaser Bin

GrainKing’s Nyrex chaser bins combine Australian-built durability with features designed for broadacre farming conditions. From 26,000L single-axle models for smaller operations to 75,000L tri-axle bins for large-scale farms, the range covers most operational needs.

The return on investment comes through faster harvest completion, reduced crop loss to weather damage and lower operating costs compared to contract harvesting or inefficient equipment logistics.