... ,7000m, 2)Hook load, 4500kN, 3)Drawwork power,2000kw, 4)Auxiliary brake:E.T. N brake ZJ70/4500D rig is ... drived with 4 sets of CAT3512 diesel generating sets. 0~750V DC ... Wire Ropein(mm)1 1/8 (28.5)1 1/4 (32)1 3/8 (35)1 1/2 (38 ... 1600(1180)Rotary Opening Diameter in(mm)20 1/2 (520)27 1/2 (698.5)37 1/2 (952.5) ... Floor Height ft(m)11.5(3.5), 15(4.5)16(4.8)25(7.5)30 (9)30(9) , ...