NEW Rollers WITH BEARING FOR LOADS OF 50 TO 230 POUNDS NYLON SURFACE O.D. B E BEARING ROLLER S7NPCY-25081 S7NPCY-25100 S7NPCY-38131 S7NPCY-38138 S7NPCY-50150 S7NPCY-50200 MATERIAL:   Roller – Cast Nylon 12 (PA12G) Bearing – Ball bearing shielded on both sides Catalog Number O.D.   .812 1.000 1.312 1.375 1.500 2.000 B Bore +.000 -.005 .250 .375 .500 E Roller Width .274 .390 .500 .438 .500 Load Capacity lb.   50   90 140 150 160 230 21  REV:  4-12-07  JC