Worm gears performance

Pacholke, P. J. and Marshek, K. M., Improved worm gear performance with colloidal molybdenum-disulfide... 

Worm-gear performance is judged in terms of load capacity, smooth, silent running, and hii efficienQr. The attainment of these goals requires accurate methods of producing and inspecting the worm and gear. 

Actuation of the control rod is performed by the drive uiit (Fig, 95). The unit consists of a housing that contains the worm and worm wheel drive and the drive pinion and rack. The lower end of the rack is secured to the upper carriage top plate. Lubrication for the bearings and gear is contained within the housing by a series of oil seals. Power is supplied to the worm drive by an electric motor and reduction init. 

---