Which shank to choose for a cultivator: Bellota 70×12 or Bianchi 30×30?

Which Cultivator Shank Is Better to Choose: Bellota 70×12 or Bianchi 30×30

Choosing the right working elements is a key factor for effective seedbed preparation. A field cultivator equipped with high-quality shanks ensures stable working depth, saves fuel, reduces draft resistance, and extends the service life of the machine. The working depth of such cultivators usually ranges from 4 to 12 cm, which is sufficient for leveling the field, eliminating weeds, and forming an ideal seedbed.

Grand Max manufactures mounted and trailed field cultivators with working widths of 2.6 m, 3.0 m, 3.5 m, 4.0 m, 5.0 m, and 6.0 m, which can be equipped either with Bellota 70×12 shanks or reinforced Bianchi 30×30 shanks.

Below is a detailed comparison to help you choose the optimal option.

Bellota 70×12 S-shaped Shank (Spain)

The Bellota 70×12 S-shaped spring shank is a highly elastic working element made from special spring steel. Its 12 mm thickness and S-shape provide flexibility and stable performance on light and medium soils.

Advantages of Bellota 70×12:

The Bellota 70×12 shank is a highly elastic S-shaped element made of special alloyed steel. Due to advanced heat treatment and pre-tensioning, it maintains its shape even under long-term load and uneven soil conditions.

Key benefits:

• excellent elasticity — the sweep maintains stable depth

• reduced draft compared to rigid shanks

• less soil and residue buildup

• increased working speed and productivity

• extended service life due to Bellota’s advanced hardening technology

• stable depth of 4–12 cm

• fuel savings thanks to oscillating working action

Recommended soils for Bellota 70×12:

• light and medium sandy soils

• seedbed preparation

• medium-density chernozem

• fields with high residue content

• farms prioritizing lower fuel consumption and higher operating speed

Ideal for seedbed preparation and high-speed work.

Bianchi 30×30 Heavy-Duty Twin-Spring Shank (Italy)

Special attention should be given to the Italian Bianchi 30×30 C-shaped twin-spring shanks. These components are the result of decades of engineering development and advanced Italian metallurgy. The thick-walled 30×30 mm shank significantly surpasses standard spring shanks in strength and ensures reliable operation on all soil types.

Thanks to its twin-spring structure, the Bianchi shank withstands heavy loads and is ideal for cultivator work on dense, heavy, and stony soils.

Advantages of Bianchi 30×30:

• reinforced square 30×30 mm profile

• twin-spring structure that absorbs vibrations

• extremely strong and wear-resistant steel

• excellent performance on dense and moist soils

• minimal deformation under heavy loads

Additional benefits:

• micro-vibration reduces soil resistance and tractor load

• fuel savings due to lower resistance and optimal elasticity

• strong self-cleaning effect

• built-in stone protection — the shank flexes upward upon impact

• high durability in rocky and compacted soils

• elasticity with high clamping strength of the sweep

Recommended soils for Bianchi 30×30:

• heavy clay and compacted soils

• compacted fields after fall tillage

• stony terrain

• areas with high risk of impact loads

• dense chernozem

• stubble fields

Bianchi shanks turn the GRAND MAX cultivator into a powerful universal machine capable of working on almost any soil type.

What to Choose — Bellota 70×12 or Bianchi 30×30?

The decision depends not only on soil type but also on your farm’s operational needs.

Both Bellota (Spain) and Bianchi (Italy) are global leaders in manufacturing cultivator components, but the choice depends on working conditions.

Choose Bellota 70×12 if you need:

• high working speed

• fuel efficiency

• flexible shank action

• stable depth of 4–12 cm

• effective work on light and medium soils

Perfect for seedbed preparation and high-productivity farms.

Choose Bianchi 30×30 if your soils are heavy and challenging:

• reinforced twin-spring structure

• maximum durability

• work on clay, dense chernozem, and stony ground

• high resistance to impact loads

• excellent performance on stubble

• long service life and overload protection

The best option for heavy conditions and stable depth of 4–12 cm.

Grand Max Recommendation

• For universal applications and high speed — choose cultivators with Bellota 70×12.

• For heavy soils and maximum load — choose cultivators with Bianchi 30×30.

Both shanks are premium-class components, but their applications differ.

Comparison Table: Bellota 70×12 vs. Bianchi 30×30