Detailed Explanation of the Parameters of the Offset Heavy Disc Harrow 1BZ-4.4 and Key Points for Selection and Use

The offset heavy disc harrow is the "heavy-duty workhorse" of tillage and seedbed preparation machinery, and is a type of heavy disc harrow. Its disc gang works offset to one side of the traction line, which is why it is called "offset." It is commonly used for stubble clearing of straw and crop residue, breaking up soil clods after plowing, and seedbed preparation on heavy clay soils, and it has strong soil-cutting and clod-breaking ability. Many operators who look up models such as the 1BZ-4.4 see only a parameter table and cannot make sense of it, so today we will explain these parameters in plain language.

What the letters and numbers in the model designation mean

According to naming conventions in the agricultural machinery industry, the "1" at the beginning of the model designation represents the major category of tillage and seedbed preparation machinery, "B" is the code for harrow, and "Z" indicates heavy-duty; together they mean "heavy disc harrow." By convention, the number at the end generally corresponds to the working width, in meters, which means this model can cover a relatively wide strip in one pass; the specific value is subject to the manufacturer's nameplate and product manual. The offset type is characterized by the center of the disc gang being offset from the travel line of the implement, so that during operation it can turn and bury the soil furrow slice to one side, making it suitable for combined seedbed preparation together with a plow.

Focus on these items when reading the parameter table

First, look at the working width, which determines operating efficiency; the wider the working width, the more suitable it is for large fields, but for small fields and hilly or mountainous land, turning space must be considered. Second, look at disc diameter and spacing; models with large discs and reasonable spacing have stronger stubble-cutting and clod-breaking ability and are less prone to soil buildup and straw blockage. Third, look at the required power, that is, how much horsepower the tractor needs to pull it, and this is the most critical item: if the power is too low, it cannot pull it and the depth cannot be reached, while if the power is too large, fuel is wasted, so be sure to select according to the power range recommended in the manual. Fourth, look at the adjustment range of working depth and disc gang offset angle, as this affects whether it can adapt to different soils and agronomic requirements. Fifth, look at the overall structural weight and the traction or mounted method; heavy harrows are heavy themselves, so you must confirm that your tractor and hitch device can match it. As for purchase subsidies, the subsidy catalogs and amounts vary from place to place, so please refer to the information published by the local agricultural machinery authorities.

Key points for use, adjustment and maintenance

Before operation, first test-harrow on open ground, and adjust the disc gang offset angle and depth according to soil moisture; if the moisture is poor, go shallower, and if the requirements for stubble clearing and clod breaking are high, it may be appropriately deepened. During operation with an offset harrow, the implement will drift to one side, and the travel direction can be corrected by adjusting the position of the traction point to ensure flat joining of passes with no missed harrowing. During operation, always clear straw and weeds tangled on the discs and scrapers to prevent blockage and bearing overheating. After each shift, check whether the discs are loose and whether the bearings are short of oil, and add grease as required by the manual. Before long-term storage, remove soil, touch up with anti-rust oil, and store off the ground on wooden blocks; when the discs become worn and blunt, sharpen or replace them in time, otherwise the quality of clod breaking will decline noticeably. As long as the parameters are chosen correctly, the adjustments are in place, and maintenance is kept up, one heavy offset harrow can help you get the seedbed preparation job done quickly and well.