We have 20 years of professional manufacturing experience in spare parts,such as helical gears,spur gear,rollers chain sprocket,pinion gear,shaft,gear shaft,steel shaft and so on. We can also provide the perform maintenance service for various series of equipment. FAQ 1.Are you trading company or manufacturer ? We are factory. 2.How long is your delivery time? Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity. 3.What industry is your product used in? This machine is mainly used for the rotary mechanism of tower crane, and can be used as supporting parts for lifting, digging, transportation, construction and other industries. 4.Do you offer customized servicesé”›?/p> We support LOGO customization, packaging customization and pattern customization. 5.What are the features and advantages of your productsé”›?/p> The main parts are carburized or nitrocarburized by high quality alloy steel, with novel and beautiful shape, small volume, simple and reasonable structure, uniform stress, stable transmission, low noise, long life and high efficiency.cheap Fine Screening Equipment website:http://www.yrscreen.com/fine-screening-equipment/