Canadian wood products industries . ipped Only 50 —divided between 40 smallmotors—is required to operate the great100-inch telescope of the Mount Wilson Ob-servatory—the largest in the world. The massive 550-ton dome, mounted on 28ball-bearing equipped trucks, responds tothe traction of two small iy2 , over 200 SKF marked ball-bearings support the dome and the tele-scopes 100 tons of moving parts. The companion of this powerful instru-ment, a 60-inch telescope—likewise at Mount CANADIAN 5KF Toronto Wilson—is also equipped with SKFmarked ball bearings. The fact that ba
Canadian wood products industries . ipped Only 50 —divided between 40 smallmotors—is required to operate the great100-inch telescope of the Mount Wilson Ob-servatory—the largest in the world. The massive 550-ton dome, mounted on 28ball-bearing equipped trucks, responds tothe traction of two small iy2 , over 200 SKF marked ball-bearings support the dome and the tele-scopes 100 tons of moving parts. The companion of this powerful instru-ment, a 60-inch telescope—likewise at Mount CANADIAN 5KF Toronto Wilson—is also equipped with SKFmarked ball bearings. The fact that ball bearings are very accur-ate, practically frictionless and show noappreciable wear, contributes much towardsmaintaining the delicate movement and easeof adjustment so essential where millionsof miles are measured by a mere fraction ofan inch. What ball bearings accomplish under theseextraordinary conditions is a good indica-tion of their value in the commoner ma-chines of industry and science. COMPANY, LIMITED- Montreal. Races displaced to showDEEP-GROOVE bear-ing carrying maximumend thrust in a forwarddirection. DEEP GROOVEBALLBEARING ,
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectfurnitu, bookyear1922
