When you want the best, choose the king of grain for handling solutions!


A Market Leading Seed & Super Bin That Eliminates All Seed and Fertiliser Contamination.

Every Nyrex® Seed and Super Bin has:

  • Fast unloading twin 14” augers
  • Rain caps on both augers to prevent water ingress when augers are folded down
  • Stainless steel “V” floor and auger barrels
  • All GrainKing seed and fertiliser bins have certified heavy-duty hydraulics
  • Hand-held remote controls which can be operated from either the tractor cab or on your air seeder
  • No contamination from seed and fertiliser
  • Use at harvest time as a Chaser Bin




Seed & Super Bins for the future, manufactured today.

The GrainKing range of Seed and Fertiliser Bins is the result of decades of experience combined with a vision to drive efficiency and innovation. We deliver a top of the line paddock solution while upholding a global reputation for quality and integrity. There is sure to be a product which suits your needs with 30 to 35 ton Seed and Super Bin sizes and a 45ton Triple Bin, plus several axles, track, and tyre options available.

The Seed and Super Bin is designed with two equal sized bins and dual augers with unloading capacity up to 7 ton per minute. The seeding unit is designed for minimal contamination and maximum efficiency. GrainKing Seed and Super Bins come standard with features that make operating efficient, safe, and convenient. All bins are equipped as standard with a handheld wireless remote for the hydraulic sweep augers and heavy duty braked axles because reliability and safety are a top priority. Our bins are built to withstand the harshest environments with heavy duty materials and ingenious design. The bins can be used at seeding and harvest time, as well as throughout the year for mixing grain into sheep feeders.







Auger SizeDual 14" 355mmDual 14" 355mm
Discharge RateUp To 7 Ton Per MinuteUp To 7 Ton Per Minute
AxleSingle with Hydraulic Brakes (Tandem Axle Optional)Self Steering Tandem with Hydraulic Brakes
Tyre Size29.5 x 25 (Earthmoving)26.5 x 25 (Earthmoving)
Colour - BinGreen (Other Colours Optional)Green (Other Colours Optional)
Colour - TarpYellowYellow
Drive on Discharge AugerPTO (Hydro is optional)PTO (Hydro is optional)
Drive on Sweep AugerHydraulicHydraulic
PTO Shaft Size1000rpm-13/4 Diam-20 Spline (Std.)1000rpm-13/4 Diam-20 Spline (Std.)
Cubic Capacity (waterline)16.9 per side19.8 per side
*may vary depending on wheel size ** flotation tyres optional.
Due to continuous improvements in the design and manufacturing of Grain King Products or that of Trufab Global specifications within this document are subject to change without notice. E&OE.
Capable of unloading upwards of 7tmin
Capable of unloading upwards of 7tmin


The GrainKing Nyrex Seed and Super Bin is designed for zero contamination with twin bins and auger systems. The bin is split into equal compartments for fertiliser and seed. There are adjustable auger covers so you can feel confident when filling your air seeder.

Multiseason use
Multiseason use


The GrainKing Seed and Super Bin’s auger system is in a class of its own. The twin 14inch augers come standard with a hydraulic sweep and PTO discharge operated by a hand held remote. The all hydraulic option is a fantastic upgrade that allows full control by remote. The unloading rate is upwards of 7 tonne per minute, guaranteed to increase your efficiency.

Decrease your fill time at seeding
Decrease your fill time at seeding


Our axles are braked and European made which reflects the top quality and emphasis on safety. The brakes can be plumbed into a hydraulic remote or into the tractors brake kit. This is not an optional feature on our chaser bins, as we believe safety is a standard, not an option! GrainKing Seed and Super Bins low centre of gravity means safer and easier manoeuvrability for on road transport and in hilly country. The low centre of gravity combined with our standard brakes makes the GrainKing range the safest on the market.


GrainKing Seed and Super Bins have a high resale value due to their reputation for exceptional quality and their ability to stand up to decades of wear and tear in the harshest environments. The GrainKing range is renowned for it’s quality reputation and the Seed and Super Bin is unlike any other bin on the market!


Tandem axles are an option available on GrainKing Seed and Fertiliser Bins, they are one of the most durable available on the market. They feature heavy duty leaf spring suspension, hydraulic operated brakes on all wheels, rear steering axle (hydraulically lockable for reversing and fast paddock/road speeds), heavy duty axles, and rear steer shock absorbers. This design ensures minimal weight on the tractor drawbar, a low centre of gravity, reduced tractor strain when towing, minimal scuffing when turning, and overall reduced soil compaction.

Dual auger systems
Dual auger systems
  • Roll Tarp
  • Internal access ladders
  • External access ladders
  • Hydraulic floor augers
  • PTO discharge auger
  • Earthmoving tyres
  • L/H Dual 14” Discharge augers, 12” floor augers for zero contamination
  • 2pac paint
  • GrainKing green paint colour
Split grain tanks
Split grain tanks
  • X4 Sight windows
  • Full length outdoors out doors
  • Over centre locking folding mechanism
  • 20spline PTO shaft
  • 1000rpm chain box
  • Vent Pipes for unloading with tarp on
  • 50mm towing tongue
  • Heavy duty single axle
  • Hydraulic brakes
  • Work light
Rain caps
Rain caps
  • Seeding chute (flexi trunk)
  • Harvest chute (Rubber chute)
  • Remote for floor auger operation
  • Rain caps
  • Dual tank- for zero contamination
  • Stainless steel discharge auger barrels
  • Stainless steel bottom V floor sheets
  • Adjustable floor auger covers
  • Draw bar jack