Features
Four is more
The Mk4 Precision Seeder Bar builds on a lineage of robust and effective Shearer seeding machines with a raft of improvements to meet today’s needs. As always, we’ve worked extensively with local farmers to develop a machine that will excel in Aussie conditions.
Single and double fold models are available in sizes from 32’ (10.3m) to 60’ (18.3m).
As standard, this machine is fitted with the all-new, all-powerful Precision Tyne Opener, wielding a whopping 1300lbs of breakout force to tame the toughest terrain. John Shearer Precision Tyne Openers combine simple and rugged ground tools with clever, hydraulic press wheels for unsurpassed soil packing in a tyne-based opener.
Tynes and Press Wheels
- 32 to 73 Precision Tyne Openers in 10” (255mm) or 12” (305mm) spacing on four sowing ranks.
- 2.5” x 1.5” x 4” stroke, double-acting breakout pressure cylinders. 1” x 4” stroke, independent, single acting packing cylinders allows press wheel packing pressure to be adjusted 30-130 kg on the go.
- Press wheels swivel up to 30 degrees each side for optimal packing along curved sowing paths.
- Dual acting cylinders raise/lower press wheels and control packing load independently of tyne depth
Wheels and Tyres
- Heavy duty swivelling castors
- Main frame wheels 560/60R22.5 169D
- Tyres on castors and wings – 400/60-15.5, pattern TRC-02, 14ply – bigger is better for consistent planting depth.
Hydraulic System
- Valves to control tyne re-coil speed
- Depth control via tandem cylinders acting on main wheels.
- 2x 10L accumulator and 1x 4L
- Inner wing folding cylinders- 4 x 5.5”x38”x2.5” piston rod
- Outer wing folding cylinders- 4 x 5”x30”x 2.5”x2.5” piston rod
- Main frame depth cylinders- 2x 6”x12”x2.5” piston rod
Additional Features
- Four sowing ranks
- Floating hitch
- Safety chains
- 800mm underframe clearance
Models and Specifications
Spec 1: Advanced hydraulics package, Topcon controlled downpressure and auto lift capability.
Spec 2: Basic independent control over breakout and packing forces.
| Model (spec 1) |
Model (spec 2) |
Wing Fold |
Size | Overall Width |
Sowing Width |
Row Spacing |
Tynes | Transport Width |
Transport Height |
|---|---|---|---|---|---|---|---|---|---|
| 6000DM4254-S1 | 6000DM4254-S2 | Double | 60ft | 18.8m (61.8ft) | 18.5m (60.8ft) | 10″ (255mm) | 73 | TBA | TBA |
| 6000DM4305-S1 | 6000DM4305-S2 | Double | 60ft | 18.8m (61.8ft) | 18.3m (60ft) | 12″ (305mm) | 60 | TBA | TBA |
| 5500DM4254-S1 | 5500DM4254-S2 | Double | 55ft | 17.4m (57ft) | 17m (55.8ft) | 10” (255mm) | 67 | 7.8m | 5.0m |
| 5500DM4305-S1 | 5500DM4305-S2 | Double | 55ft | 17.4m (57ft) | 17.1m (56ft) | 12” (305mm) | 56 | 7.8m | 5.0m |
| 5000DM4254-S1 | 5000DM4254-S2 | Double | 50ft | 15.3m (50.3ft) | 15m (49.2ft) | 10” (255mm) | 59 | 7.8m | TBA |
| 5000DM4305-S1 | 5000DM4305-S2 | Double | 50ft | 15.3m (50.3ft) | 15.2m (50ft) | 12” (305mm) | 50 | 7.8m | TBA |
| 4000SM4254-S1 | 4000SM4254-S2 | Single | 40ft | 12m (39.5ft) | 11.9m (39.2ft) | 10” (255mm) | 47 | 7.8m | 4.9m |
| 4000SM4305-S1 | 4000SM4305-S2 | Single | 40ft | 12m (39.5ft) | 12.1m (40ft) | 12” (305mm) | 40 | 7.8m | 4.9m |
| 3200SM4254-S1 | 3200SM4254-S2 | Single | 32ft | 10.3m (33.7ft) | 9.9m (32.5ft) | 10″ (255mm) | 39 | 7.8m | TBA |
| 3200SM4305-S1 | 3200SM4305-S2 | Single | 32ft | 10.3m (33.7ft) | 9.8m (32ft) | 12” (305mm) | 32 | 7.8m | TBA |
Options and Accessories
Optional Air Kit
Advanced (Spec 1) or basic (Spec 2) hydraulic control system
