Eaton Airflex CB Series Installation, Operation And Maintenance Manual

TABLE 2 - “X” DIMENSIONS (FIG. 8)SINGLEELEMENTS“X” in.(mm)DUALELEMENTS“X” in.(mm)6CB200 3.250 (82.6) —— ——8CB250 3.750 (95.3) —— ——10CB300 4.375 (111.2) —— ——12CB350 5.000 (127.0) 12CB350 10.500(266.7)14CB400 5.500 (139.7) 14CB400 11.500(292.1)16CB500 7.062 (179.4) 16CB500 14.000(355.6)18CB500 7.062 (179.4) 18CB500 14.000(355.6)20CB500 7.062 (179.4) 20CB500 14.000(355.6)22CB500 7.062 (179.4) 22CB500 14.000(355.6)24CB500 7.062 (179.4) 24CB500 14.000(355.6)26CB525 7.500 (190.5) 26CB525 14.625(371.5)28CB525 7.500 (190.5) 28CB525 14.750(374.7)30CB525 7.500 (190.5) 30CB525 14.750(347.7)32CB525 7.500 (190.5) 32CB525 14.750(347.7)36CB525 7.500 (190.5) 36CB525 14.750(347.7)40CB525 7.500 (190.5) 40CB525 14.750(347.7)45CB525 7.500 (190.5) 45CB525 14.750(347.7)2.3 Mounting Spider and Drum Hub2.3.1 The spider and drum hub are bored for apress fit onto their respective shafts. The inter-ference is approximately .0005 in, per inch(.0005mm/mm) of shaft diameter,2.3.1.1 Ensure the shaft is clean and free of nicks orburrs and check the shaft and bore diametersfor proper fit.2.3.1.2 Tap the key into the keyway, making sure itbottoms.2.3.1.3 Apply a light coat of anti-seizing compound tothe shaft and key.2.3.1.4 Heat the drum hub or spider uniformly to250º F (121ºC) to expand the bore.It is recommended the drum hub orspider be heated in oil or an oven;however, since this is not alwayspossible, torches may be used. Whenusing torches, use several with “rose -bud” (broad-flame) tips and keepthem moving to avoid “hot spots”.Check bore temperature frequently toavoid overheating.2.3.1.5 Slide the heated drum hub or spider onto theshaft until the hub face is flush with the end ofthe shaft. Hold in position and allow to cool.2.4 Shaft AlignmentNote: The text in this section applies to gap-mounted applications; however, the alignmenttolerances apply to all types of mountings.Parallel Alignment Tolerance (Off -set ):Not to exceed 0.010 inch (.254mm) Total In -dicator Reading (0.005 in. (.127mm)maxi -mum offset).Angular Alignment Tolerance (Gap):Not to be exceed 0.0005 inch per inch(.0005mm/mm) diameter at which readingsare taken (“D” on FIg. 8).Note: The alignment procedure described be-low has been used successfully on many CBclutch and brake applications. Other proce-dures, of course, may be used;however, the alignment tolerances are thesame regardless of the technique used.2.4.1 Foundations must be set so distance “X”,shown in Figure 8, is established. If the clutchis mounted on a shaft having plain bearings,make sure the shaft is centered within thebearings when establishing the “X” dimension.Refer to Table 2 for appropriate “X” dimen-sions.Note: It is presumed that one of the shafts hasbeen properly located and anchored.PDF Format 6 © Copyright Eaton Corp., 2001. All rights reserved.StockCheck.comDownloaded from StockCheck.com