Spring harrow with a straight spring: 400 or 500 mm – what should a farmer choose?

Which Spring Tine Length to Choose for a Spring Harrow: 400 mm or 500 mm?

When purchasing a spring harrow, farmers increasingly pay attention not only to the working width and frame design, but also to the length of the working spring tine. This parameter directly affects working depth, soil aggressiveness, crop safety, and the economic efficiency of the farm.

In the range of Grand MAX EcoTerra 3.0 / 6.0 / 9.0 spring harrows manufactured by Grand Max Agro, straight spring tines with a 10 mm diameter are used. These harrows can be equipped with two tine length options:

• 10×400 mm spring tine

• 10×500 mm spring tine

Let’s take a closer look at the differences and determine which spring harrow tine length is better suited for specific crops and farming tasks.

10×400 mm Spring Tine — Rigid and Controlled Soil Cultivation

The 400 mm spring tine features increased rigidity. Due to its shorter length, it provides a more aggressive impact on the soil and performs especially well on compacted fields.

Recommended for the following tasks:

• early spring moisture retention

• breaking dense soil crust

• pre-sowing soil cultivation

• stubble cultivation

Best suited for crops:

• wheat, barley, oats — early spring

• corn (maize) — before emergence

• sunflower — before emergence

• fields with heavy and medium loam soils

Results for the farm:

• effective moisture retention

• active weed control at the “white thread” stage

• field leveling

• stable and uniform working depth

Economic effect:

The 10×400 mm spring tine reduces the number of repeated passes and helps preserve soil moisture, directly contributing to more uniform crop emergence and a yield increase of up to 5–8%. This is especially important during dry spring seasons.

10×500 mm Spring Tine — Softer and More Versatile Operation

The 500 mm spring tine, with the same 10 mm diameter, works more gently thanks to its greater flexibility. It better follows uneven terrain and reduces the risk of crop damage.

Recommended for the following tasks:

• pre-emergence and early post-emergence cultivation

• work on less compacted soils

• gentle loosening and soil aeration

Best suited for crops:

• soybean — early growth stages

• corn (maize) — careful cultivation after emergence

• sunflower — early growth stages

• cereal crops — aeration and crust breaking

Results for the farm:

• more uniform soil treatment

• reduced risk of crop damage

• improved soil gas exchange

• stable root system development

Economic perspective:

The 10×500 mm spring tine helps reduce plant losses and re-seeding costs. Additionally, softer operation decreases implement wear and extends the service life of the spring harrow.

Comparison Table: Which Spring Tine Length to Choose for a Spring Harrow

✔ — recommended
◯ — acceptable
✖ — not recommended

Compatibility with Grand MAX EcoTerra Spring Harrows

All Grand MAX EcoTerra 3.0 / 6.0 / 9.0 spring harrows manufactured by Grand Max Agro can be equipped with either 10×400 mm or 10×500 mm straight spring tines.
This allows farmers to adapt the implement precisely to their crops, soil conditions, and cultivation technology without paying extra for unnecessary options.

Which One to Choose: 400 mm or 500 mm?

To summarize:

• for intensive soil cultivation, heavy soils, and early spring operations — choose the 10×400 mm spring tine

• for universal use and more delicate cultivation — the 10×500 mm spring tine is the optimal solution

For farms growing multiple crops, the best approach is to configure the spring harrow according to specific seasonal tasks.

Why Farmers Choose Grand Max Agro

Grand Max Agro is a manufacturer of spring harrows and produces the following models:

• Grand MAX EcoTerra 3.0

• Grand MAX EcoTerra 6.0

• Grand MAX EcoTerra 9.0

All models can be equipped with straight spring tines 10×400 mm or 10×500 mm, depending on the farm’s needs.

Key advantages:

• transparent and accurate technical specifications

• reinforced frames

• hardened high-strength spring tines

• adaptation to real farming conditions

• optimal price / durability / performance ratio

Conclusion

Choosing the correct spring tine length for a spring harrow is not just a technical detail — it is a practical tool for improving soil cultivation efficiency and farm profitability.

If you need help selecting a spring harrow and the optimal spring tine configuration, the specialists at Grand Max Agro will help you choose the best solution for your crops, soil conditions, and cultivation technology.