Introduction to the structural features of this series of tractors

Abstract

Overview In 1966, Ningbo Tractor Factory began to develop the Dongfanghong 20Z tractor, with a rated power of 14.7 kilowatts (20 horsepower) and a 290 cylinder diesel engine. After 2,000 hours of field use After testing, all indicators met the design requirements. It passed the provincial appraisal in 1968 and was put into mass production. After several years of actual use, it was reflected that the power was insufficient when operating in large specific resistance paddy fields. Beginning in 1972, based on the needs of paddy field operations, the Dongfanghong 20Z tractor was designed and improved. The chassis was strengthened and equipped with a nationally calibrated 295 diesel engine with a rated power of 17.64 kilowatts (24 horsepower). It was also designed and trial-produced with high-pattern paddy field rubber. After three rounds of prototype tests and improvements (and three rounds of 2,000 hours of field testing), all indicators met the requirements for paddy field operations, and it passed the provincial appraisal in 1977 after the modification. In 1988, the registered trademark was changed to Ben