タイトルまたは説明

The product is suitable for low-temperature models for drilling operations in **5°C severe cold areas, and can be adapted to severe cold oil areas such as Russia and Canada. Using performance, the product conforms to the API Spec 7K specification, and has passed the ISO***1 quality system and API certification.
The shell is a welded structure of cast steel and steel plate, and its base is a steel casting. After rough machining, it is welded with the steel plate to form the shell, and then it is finished after the overall annealing to relieve stress.
The transmission gear is a medium-hard tooth surface spiral bevel gear, which has high strength, stable transmission and large transmission torque.
ZP**5   *7 1/2 (**4.5)   ***8/***3     ***0        ****9        **0
ZP**5    *7 1/2 (**8.5)     ***3         ***0         ****9       **0
ZP**5    *7 1/2(**2.5)     ***3          ***0          ****2     **0
ZP**5    *9 1/2(***7.3)     ***3/***1   ***0         ****5      **0