And there is an example of other 1,8m antenna on 1224.
Presumably it is the alloy mixture used in the casing that is the issue when it is overloaded with dish weight and windload.
Other H-H motors that should be OK for 1.8m and larger dishes that I am aware of are listed below.
They are all out of production and not so easy to find nowadays but they are worth looking out for.
1. KHM 36RL (The Elephant), this was in production before the Jaeger 1224 and it had a steel casing.
2. SMO36. this was considered to be a more heavy duty version of the Jaeger 1224 and could readily accept a decent size dish.
3. AJAK H180, probably the best of the lot and easily capable of swinging a "big wan" about with its chain drive.