Choosing the right-sized rotary tiller for a small loader boils down to matching the tiller's width, weight, and tilling depth to the loader's specifications, operational space, and task needs-avoid overloading or underutilizing the equipment.
1. Start with Loader Capacity Limits (Non-Negotiable)
The tiller's size must align with the loader's core capabilities to prevent equipment damage or poor performance:
Lifting Capacity: Check the loader's maximum lift capacity (usually 300–1500 kg for small models).
The rotary tiller's weight (120–300 kg) must be ≤ 50% of the loader's lift capacity (e.g., a 500 kg lift loader suits a 200–250 kg tiller). Overloading strains the loader's hydraulic system and reduces maneuverability.
Hydraulic Flow/Pressure: As covered earlier, the tiller's required flow (15–30 GPM) and pressure (1500–3000 psi) must match the loader's auxiliary hydraulic output. A wider/heavier tiller often needs higher flow-e.g., 1000–1200mm tillers need 15–20 GPM; 1400–1930mm tillers need 20–30 GPM.
Loader Wheelbase/Width: The tiller's working width should not exceed the loader's wheelbase by more than 200mm. A wider tiller may cause the loader to tip during turns or uneven terrain.
2. Match Tiller Size to Operational Space
The working environment directly dictates the tiller's width (the most critical size parameter):
Narrow Spaces (Greenhouses, Orchard Rows, Small Plots): Choose a narrow tiller (1000–1200mm). It navigates tight gaps (≤1.5m) without damaging crops/facilities and maintains the loader's flexibility.
Open Small Plots (Family Farms, Medium Vegetable Beds): Opt for a medium-width tiller (1400–1600mm). Balances efficiency (covers more area per pass) and maneuverability, reducing tilling time without compromising control.
Large Open Plots (Small Commercial Farms): Select a wide tiller (1600–1930mm)-but only if the loader's power (≥30 HP) and hydraulic flow (≥25 GPM) can support it. Avoid wide tillers on low-power loaders (≤25 HP) to prevent stalling.
3. Align Tilling Depth with Task Needs
Tiller depth should match your planting requirements and the loader's lifting stroke:
General Seedbeds (Vegetables, Flowers): Choose a tiller with adjustable depth (100–150mm). Most small loaders can easily handle this range without strain.
Deep Plowing (Compacted Soil, Fertilizer Mixing): Select a tiller with max depth (150–200mm)-but confirm the loader's hydraulic lifting stroke can accommodate it (ensure the tiller can reach the required depth without bottoming out the loader's arms).
4. Practical Size Matching Examples (Small Loader Reference)
| Small Loader Specs (Typical) | Recommended Tiller Size | Suitable Tasks |
|---|---|---|
| 20–25 HP, 300–500 kg lift, 15–20 GPM | 1000–1200mm width, 100–150mm depth, 120–200 kg weight | Greenhouse tilling, orchard interrows, small vegetable plots |
| 25–30 HP, 500–800 kg lift, 20–25 GPM | 1400–1600mm width, 100–200mm depth, 200–250 kg weight | Family farm seedbeds, medium plot tilling |
| 30–40 HP, 800–1200 kg lift, 25–30 GPM | 1600–1930mm width, 150–200mm depth, 250–300 kg weight | Small commercial farm plowing, deep soil improvement |
