9RX Tractor undercarriage configurations |
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Model |
Narrow undercarriage |
Wide undercarriage |
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Track spacing: 203.2 cm (80 in.), 223.5 cm (88 in.), or 304.8 cm (120 in.) |
Track spacing: 223.5 cm (88 in.) or 304.8 cm (120 in.) |
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45.7-cm (18-in.) tracks |
61-cm (24-in.) tracks |
76.2-cm (30-in.) tracks |
91.4-cm (36-in.) tracks |
9RX 490 |
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• |
• |
• |
9RX 540 |
• |
• |
• |
• |
9RX 590 |
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• |
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9RX 640 |
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• Available
--- Not available
John Deere offers a variety of track widths and track spacings to fit the needs of your operation. The narrow undercarriage is great for row crop applications and can be ordered with track spacings of 203.2 cm (80 in.), 223.5 cm (88 in.), or 304.8 cm (120 in.). The wide undercarriage is ideal for tillage and seeding applications and is available with 223.5-cm (88-in.) or 304.8-cm (120-in.) track spacing.
Application |
Narrow undercarriage |
Wide undercarriage |
Primary tillage |
Good |
Best |
Secondary tillage |
Better |
Best |
Transport |
Good |
Better |
Grain cart |
Best |
Best |
Nutrient application |
Best |
Good |
Row-crop planting |
Best |
Better |
Specialty crops in bedded rows |
Best |
Good |
Air seeding |
Better |
Best |
9RX Tractors equipped with 76.2-cm (30-in.) and 91.4-cm (36-in.) tracks can be equipped with industry-exclusive, factory-installed track spacing set at 304.8-cm (120-in).
9RX Tractors equipped with 304.8-cm (120-in.) track spacing provide increased stability, allow producers to operate on 304.8-cm (120-in.) centers for controlled traffic farming, and provide improved track-to-frame clearance for better access to the undercarriage for serviceability and material cleanout. John Deere is the first and only tractor manufacturer to offer a 304.8-cm (120-in.) track spacing option on four-track tractors with 76.2-cm (30-in.) and 91.4-cm (36-in.) tracks up to 462.3 kW (620 hp).
9RX with 91.4 cm (18 in.) tracks and 304.8-cm (120-in.) track spacing
9RX Tractors with 304.8-cm (120-in.) track spacing increase space between the undercarriage and chassis to provide more space for performing daily and routine maintenance tasks.
Performing daily maintenance tasks