... , Oil Rig Type and Basic Parameters of SY/T5609-1999 1. Motorized Rig: To realize the intelligent control the rigs, the ... the Lifting Steel Rope mm(in)281 1/832(1 1/4)35(1 3/8")38(1 1/2") Rated Power of the Hoister kW ... Diameter of the Drum mm(in)520(20 1/2)700(27 1/2)950(37 1/2") Single Unit Power of the Drill ...