Technology date: 1..Ratio range: 7-100 2. Input power: 0.04-15KW 3. Permit torque rang: 24-2700N.m 4. Structure mode: Foot-mounted, input shaft, with input flange; Additional single (double) output shaft Characteristic: 1.High efficiency and smooth operation, due to accurate and precise machining. 2.Worm shaft from case hardened alloy steel and ground finished tooth flanks. 3.Worm wheel from shell-cast, high strength, phosphor bronze. 4.Die-cast aluminium gearcase for sizes 27 through 72, cast iron gearcase for sizes 86 through 250. 5.Fan cooling for VF 210 and VF250 as standard. 6.Standard hollow output shaft.