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T25 Penetrator

Scari-Chisel - Floating or Rigid Pull

The big brother to the incomparatble Ag-Boss series.

Versatile Heavy Duty Scari-Chisel - Direct Drill / Minimum Till

Built-in Strength for long lasting performance

Superior in-paddock floatation - for Direct Drill, Controlled Traffic or Minimum Till applications

From Gyral - the company that introduced broadacre air seeders to world agriculture, comes PENETRATOR - the tough scari-chisel.

Big Brother to the Gyral Ag-Boss, the Penetrator incorporates all the features of our lighter cultivators/tilthers plus all the strength and tyne breakout required in a heavy duty primary tillage implement.

Designed from the ground up, the Penetrator is at home in controlled traffic, direct drill/minimum tillage and conventional cultivation.  With this one versatile implement, today's farmer can plant small seeds with precision or in those tough years search down deep with minimum till spear points - getting seed into the moisture band.

The Concept

Gyral's Penetrator has been designed to be versatile and practical, it is available with a number of configuration options, with the ability to be used in a range of seeding configurations.

The Penetrator suits a wide range of farming conditions and management practices.

  • Widths from 6.0m to 24.0m (Conditions may apply)
  • Single Fold (3 Section) - up to and including 14.0m
  • Double Fold (5 Section) - from 14.0m to 24.0m
  • Non-Fold Models available (tyne spacing limitations apply)
  • Standard Floating Hitch and Limited Rigid Hitch Models
  • Curved, Adjustable Multi-Function and Direct Drill Straight Tynes
  • Tyne Assembly mechanically spring loaded or adjustable hydraulic pressure controlled
  • Coulter option available with certain tyne options
  • In frame or rear trailing press wheel options
  • Frame built to suit multi-tyne spacings (250, 333 and 400mm)
  • Press Wheel planter design with floating secondary sowing tyne mounted to the press wheel arm.

Key Features Include:

  • Trussed frame with multi-tyne pattern to permit different tyne spacings
  • Numerous wheel/spacing options to suit controlled traffic parameters
  • Clear adjustable depth indicator
  • Replaceable ball hitch
  • Main castor wheels, single arm for easy tyre removal and lock pins for reversing
  • All axles have replaceable bearings
  • Unique Gyral floating hinge design


Standard specifications. The Penetrator can be supplied with edge-on curved shaped or straight vertical tynes and either a mechanical spring or hydraulic jump mechanism.  Tyne break-outs range from 500lbf in spring version, with hydraulic tyne version up to 650lbf breakout.  The fully production-forged 50x25mm edge-on tynes shanks (straight and curved) are suitable for 43, double bolt sweeps (2x1/2" UNC bolts).

Multi-Function Curved Tyne

43 curved edge-on 50mm x 25mm factory forged shank with 2 x 1/2 bolt holes @ 1 3/4 & 2 1/4 centres.

  • Beam:  100mm RHS
  • Tyne break-out 400-650 lbf
  • Spring and Hydraulic Jump
  • Multiple Point Options
  • 770mm (Sweep) & 845mm (Spear Point) - Underframe Clearance
  • Jump Height Approx 350mm

Straight Adjustable Tyne

Option 1:  Multi-Function
43 edge-on 50mm x 25mm multi-function factory forged adjustable shank with 2 x 1/2 bolt holes @ 1 3/4 & 2 1/4 centres.

Option 2:   Direct Drill
43 edge-on 50mm x 25mm direct drill adjustable shank.

  • Beam:  100mm RHS
  • Tyne break-out 400-650 lbf
  • Spring and Hydraulic Jump
  • Multiple Point Options
  • Adjustable from 725mm to 840mm with 300mm Sweep

Curved & Straight Tyne

Gyral Press Wheels

Increase efficiency and improve plant establishment.  The Penetrator is designed to take in-frame press wheels, set close to the planting tyne where ever possible.  Multiple press wheels can be mounted on the back beam if required to suit particular circumstances.

All stub axles are removable for left and right orientation.  Hubs - Holden Bearings, Ford Studs and Ford Pattern.

Gyral is proud to announce another innovation in the effort to continually improve our product.  The Gyral Press Wheel Swivel Control Plate.

By Selecting the correct hole position and rotating the swivel control plate, this simple but effective design can customise your Gyral press wheels to any one of five positions shown.

The advantages include:

  • Prevents press wheels fouling the mainframe wheels when in either working or folded positions;
  • Stops press wheels fouling against adjacent press wheel in narrow tynes spaced machines; and
  • Provides great control of the press wheels giving accurate tyne following ability.