TY - JOUR
AB -  LARGEST U. S. SPHERICAL ROLLER BEARINGS IN PAPER-FINISHING MACHINE Two spherical roller bearings, which together will weigh five tons when assembled and will be the largest ever built in the United States, are under construction at SKF Industries, Inc., Philadelphia. They are for use in a paper-mill calender machine that gives high-quality paper a fine finish as it passes between rollers under very high pressure. Modern machinery of all sorts now employs some type of ball or roller bearings are relatively small and are machined with great accuracy. The hard metal balls used are said to be the most perfect spheres produced in industry. The forgings which will become the inner rings of the giant bearings are four feet in diameter, and each will support 38 rollers weighing 35 pounds apiece. Each bearing is designed to carry a load in excess of 2,000 tons. The calender will have 18 other spherical roller bearings, all large but lighter and smaller than these two RECONDITIONER FOR PAVEMENT MATERIAL With thousands of miles of war-worn and neglected highway and street pavements to be replaced, more than usual interest attaches to a steam reconditioner for bituminous binder material, making possible the re-use 
TI - RECONDITIONER FOR PAVEMENT MATERIAL
JF - School Science and Mathematics
DO - 10.1111/j.1949-8594.1947.tb06083.x
DA - 1947-03-01
UR - https://www.deepdyve.com/lp/wiley/reconditioner-for-pavement-material-P7uQEthBfe
SP - 284
VL - 47
IS - 3
DP - DeepDyve
ER -