Specifications
| Frame Width (mm) | 1970, 2480 or 2950 |
| Frame Depth – Toolbar | 990mm (39″) |
| Frame Depth – Overall | 1562mm (61″) |
| Frame Height | 813mm (30″) |
| Frame Weight (kg) | 285 / 305 / 370 |
| Frame Weight (kg) | 285 / 305 / 370 |
Frame – Manufactured in Australia from 4″ x 4″ 3/8 RHS
Hitch – Bolt-on cast tool steel tower hitch with 1 1/8″ category 2 pins which are removable for transportation
Depth Control – Award winning “Ripple Clamp” system gives 25mm (1″) incremental height adjustment and capable of variable positioning internally or externally of the frame. The GP39 is fitted with 185R14C (8 Ply) tyres on HT holden wheels and hubs.
| Shank Spacing | GP39-6 | GP39-8 | GP39-10 |
| 330mm (13″) | 5 | 7 | 9 |
| 445mm (17.5″) | – | – | 7 |
| 508mm (20″) | 3 | 5 | – |
Available Optional Extras
- 26″ Shanks
- 16″ Fluted Disc Pasture Coulters
- 18″ Fluted Disc Pasture Coulters
- Depth Control Wheels – Manual
- Crumble Roller
- Tickle Pot Seeder
- Weed Knife – Heel
- Weed Knife – Wobble Blade
- Adjustable Hillers
- Fixed Hillers
- Disc Hillers
- Digging Points
Yeomans Keyline Plow Frames suit a 13″ (330 mm) shank spacing. As shanks are clamped to the frame rather than being welded to it, this allows for multiple shank spacings. The fully welded frames are manufactured at the Gold Coast factory from 4″ x 4″ x 3/8″ (102 x 102 x 9.5 mm) RHS. This results in high strength equipment which has 75 years of proven reliability in the field.
The GP frame can be complemented with an optional castoring coulter disc ideal for pasture renovation to prevent tearing of the ground surface covering. Coulters are attached and removed to the frame using a single “L” bolt. These are available in 14″, 16″ or 18″ configurations. All coulter units are adjustable to maintain optimal distance between the coulter disc and the digging point.
Yeomans Crumble Rollers can be fitted as an optional extra. They are a robust 26″ diameter, angle iron construction which provides a superior level of finish to your worked ground or pasture. Units are available as either Hydraulic (HYD CRUM) or Manual (XARM CRUM) depending on your requirements.
When selecting a Yeomans plow, drawbar horsepower and tractor weight are more important than engine horsepower alone.
Minimal Soil Disturbance Design
75 years of Keyline expertise, design and testing has produced the best shank and point geometry to lift and fracture compacted subsoil without inverting or mixing the topsoil.
This controlled soil‑lifting action is achieved through carefully developed shank profiles and working angles that loosen the soil profile while preserving surface structure, residue, and ground cover. The result is a precise, mechanical approach to subsoil conditioning rather than aggressive cultivation.
Advanced Shear Pin System
The shear pin acts as a sacrificial mechanical safeguard, absorbing sudden shock loads by failing under excessive force before damage can be transferred to shank, clamp and frame.
What sets the Yeomans system apart is the ingenious design which uses short pieces of off-the-shelf mid steel rod instead of expensive machined pins. Changing a Yeomans pin is quick, easy and cheap. When the shear pin breaks, the shank doesn’t fall to the ground, it remains on the frame meaning a pin change takes around 40 seconds. No spare pins? no problem, use an M8 bolt to get you working again until replacements arrive.
Interchangeable Yeomans Shank System
Built around the Yeomans Oyster Clamp Shank (OCS) system, plows support interchangeable 22″, 26″, and 31″ shanks with replaceable points and adapters.
Clamp‑mounted shanks allow fast reconfiguration, simplified servicing, and long‑term component replacement without cutting or welding. This modular system gives operators the flexibility to adapt one frame to multiple applications while protecting long‑term machinery investment.
Fully Customisable & Upgradeable Frame System
Yeomans plows are built around a highly adaptable frame system designed to accept a wide range of attachments and configurations. The frame allows coulters, crumble rollers (manual or hydraulic), depth control systems, seeders, weeders, and hilling components to be easily fitted, removed, or reconfigured to suit changing applications. Plows can be set up as a dedicated cultivator, seeder, weeder, or hiller, or configured to perform multiple tasks in a single pass.
Importantly, these options can be specified at the time of purchase or added at any stage in the future, allowing the machine to evolve over the years. This modular approach ensures long‑term flexibility, protects machinery investment, and allows Yeomans plows to be upgraded and adapted over many years of use.
Heavy‑Duty Australian‑Built Construction
All Yeomans plows feature fully welded RHS steel frames designed and manufactured in Australia for Australian conditions. Frame designs have evolved through decades of field use to withstand demanding soils, variable terrain, and long working hours.
This proven construction approach delivers strength, durability, and confidence that the plow is built to perform year after year.
