... 207T are improved from 205, 206, 207. The bearings are taper roller bearings or angle touch bearing. 205CT, 206CT, ... 207CT are added a thermoregulator to 205, 206, 207. ... are improved from type 205, 206, 207 which have no bearings inside. It can be used in ... , 207H are improved from type 205, 206, 207 which have depose liquid collection. GW205 is improved ...