The common sizes of disc harrows for small agricultural tractors are mainly reflected in working width, disc blade diameter, and disc quantity, which are closely matched with the horsepower of small tractors (usually 12 - 60 hp).
The specific common specifications are as follows, divided into Chinese and international standards for clarity:
Chinese common specifications
| Tractor Horsepower (hp) | Working Width (m) | Disc Quantity (pcs) | Disc Diameter (mm) | Working Depth (cm) |
|---|---|---|---|---|
| 12 - 20 hp | 1.1 | 12 | 460 | 8 - 14 |
| 15 - 25 hp | 1.3 | 14 | 460 | 8 - 12 |
| 25 - 35 hp | 1.5 | 16 | 460 | 8 - 12 |
| 30 - 45 hp | 1.7 | 18 | 460 | 8 - 12 |
| 35 - 45 hp | 1.9 | 20 | 460 | 8 - 12 |
| 50 - 60 hp | 2.3 | 24 | 460 | 8 - 12 |
|
These are typical specifications of light disc harrows such as the 1BQX series in China. They are mostly three-point hitch mounted, suitable for small plots of land, and used for tasks like soil crushing after plowing and seedbed preparation before sowing. |
International common specificationsInternational brands have diverse specifications for disc harrows matching small tractors, and the parameters are often marked in imperial units. Common models and their sizes are as follows:
Bobcat: It offers 3-point disc harrows with three common working widths for small tractors, namely 66 inches (1.68m), 78 inches (1.98m), and 90 inches (2.29m). All are equipped with 18-inch diameter disc blades, and the applicable tractor horsepower ranges from 30 - 75 hp. The working depth is uniformly 6 - 8 inches (15 - 20cm).
KIOTI: Its DH1005 low-horsepower disc harrow is suitable for 22 - 40 hp tractors. It has a working width of 62.5 inches (1.59m), 16 disc blades of 14 inches (35.56cm) in diameter, and the spacing between front and rear blades is 7.5 inches (19.05cm).
The DH2064 model for 35 - 55 hp tractors has a 64-inch (1.63m) working width and 18 disc blades of 18 inches (45.72cm) in diameter.
YANMAR: The YDH105 model is suitable for 18 - 32 hp tractors, with a working width of 62.5 inches (1.59m) and 16 disc blades.
The YDH307 model matches 30 - 55 hp tractors, featuring a working width of 85 inches (2.16m) and 20 disc blades. Both have a disc blade spacing of 7.5 inches (19.05cm).
Mahindra: Its compact disc harrows have multiple specifications. For example, the 8x8 mounted offset series has 16 disc blades, and the optional disc diameters are 560mm, 610mm, and 660mm.
The 9x9 series has 18 disc blades with the same optional disc diameters, which are suitable for small and medium-sized tractors and widely used in small farmland operations.
