we can design and product hydraulic/vertical hydraulic governing forward gear box raising the whole machinery performance of drilling rigreducing the coupler rotating speedavoiding coupler heatingkeeping drilling rig work normally

TECHNICAL PARAMETERS: 

Max.input Revolution,R/min Max.output Revolution,R/min Rated power range,Kw Rated conversion efficiency,% Governing rage Oil volume,L 1500 650 350--1050 1.5--3 1—1/5 400

hydraulic governing gear box