I have a Warco supplied WM180 which I have owned for three and a half years. For those who don't know this lathe it's the smallest of the 'WM' lathes made apparently by the Weiss factory in China and supplied world wide to many suppliers including Warco and two or three other UK companies in different colours and model names.
This lathe is well equipped with 'oil ports' on slideways and leadscrew mounts etc and I oil these frequently as laid out in the sparse owners booklet. There is almost no mention of the main headstock bearings other than a small paragraph pointing out that they were adjusted in the factory and that increasing the end loading excessively can damage the bearings.....