Hi Liam
From the BSH website
The BSW Household Appliances Co., Ltd.. was in Wuxi in Jiangsu Province in 1994 jointly by the BSH Bosch and Siemens Home Appliances Group and Wuxi Little Swan Corp.. founded. At the production site front-loading washing machines, washer-dryer for the local market to the highest international quality standards are produced.
The company is in the development and manufacturing network of the product area laundry integrated that all technological input into the joint venture (BSH 60% share) yields . The parts are mostly based on the local supply market. Since 2001, BSW increasingly exported to Europe.
From the little swan website
Wuxi Little Swan Company Limited:
Holding company: Shares proportion
Jiangsu Little Swan Marketing and Sales Co., Ltd. 98%
Wuxi Little Swan Import and Export Co., Ltd. 88%
Jiangsu Little Swan Sanjiang Appliance Manufacture Co., Ltd. 51%
Wuxi Little Swan Ceramics Co., Ltd. 90%
Ningbo Xinle Appliance Co., Ltd. 32%
Little Swan (Jingzhou) Appliance Co.,Ltd. 51%
Little Swan (Jingzhou) Sanjin Appliance Co.,Ltd. 35%
China and foreign countries company:
Wuxi Little Swan General Appliance Co., Ltd. 70%
Wuxi Little Swan Huayin Electric Appliance Co.,Ltd. 75%
Wuxi Filin Electronics Co.,Ltd. 51%
Wuxi Little Swan Enami Tooling Manufacture Co.,Ltd. 70%
Wuxi Little Swan Presion Casting Co.,Ltd. 75%
Wuxi Lifanda Electric Appliance Co.,Ltd. 42%
Wuxi Little Swan Schulthess Washing Machinery Co.,Ltd. 75%
Wuxi Little Swan Cleaning Equipment Co.,Ltd. 75%
Wuxi BSW Household Appliance Co.,Ltd. 40%
Wuxi Indesit Home Appliance Co.,Ltd. 30%
I have not investigated as too which models these Welling motors have been fitted to yet, not sure why they would sound more grumbly either. There seems to be no rhyme or reason what products Electrolux choose on serviceable and non serviceable drum units. It seems odd to put a sealed drum in the most expensive machine and a normal drum in the mid range?
The ZWF14170 does not have a serviceable drum, Electrolux are showing that they should be contacted for this part, I guess that can mean that parts may be able to be purchased to make a complete drum.