Harrow is a secondary tillage implement that cuts the soil to a shallow depth for smoothening and pulverizing the soil as well as to cut the weeds and to mix the materials with the soil. Disc harrows are most widely-used harrow. They are tractor-driven and are raised either by a three-point lift or hydraulically by wheels.
Main components of disc harrows are notched disc blades. Disc blades are perpendicular to the floor, and there is an adjustable inclination angle between blades and direction of forward motion. During operations, pulled by the tractor, disc harrows rolling on, disc blades cut the grass roots and crop stubble. In this process, fertilizer and pesticide are mixed together with soil. In general, according to configuration form of disc gang, disc harrows can be classified into 3 kinds: Single Action Disc Harrow, Tandem Disc Harrows, and Offset Disc Harrow.
Medium duty disc harrow consists of 2 types: 1BJX series mounted offset disc harrow, and 1BJ series hydraulic offset folding disc harrow.

Mounted Offset Medium Duty Disc Harrow when mounted on a tractor, becomes a compact unit that can easily be manoeuvred into corners or on short head lands. In addition, the implement being easily attached and transportable in top speeds, little time is lost between the shed and the field. Front disc gangs of 1BJX series mounted offset disc harrows are assembled with notched disc blades, while the rear disc gang adopting plain disc blades. The harrows use high-grade materials, with good quality and long service life. The 1BJX series Middle-duty Disc Harrow could be equipped with tractors with different horsepower (35HP to 120HP ).