Rex Linkbelt Roller Chain Catalog - Norfolkbearings.com

Sprocket Reference DataBore tolerancesBores will be furnished within the standard tolerances listedbelow, unless otherwise specified.Bore diameter, Tolerance, Maximum boreinches inches length, inchesNUp to and including 1" +.001 –.000 41 1 / 16" to 2" +.002 –.000 62 1 / 16" to 3" +.003 –.000 7Over 3 1 / 16" +.004 –.000 8N Applies to tolerances listed. For greater bore lengths, consult RexnordIndustrial ChainStandard keyseat and setscrew sizesDiameter Keyway Setscrew Diameter Keyway Setscrewof Shaft Width × Depth of Shaft Width × Depth1/ 2– 9 / 161/ 8× 1 / 1610 – 24 2 5 / 16– 2 3 / 45/ 8× 5 / 165/ 8*5/ 8– 7 / 83/ 16× 3 / 321/ 42 13 / 16– 3 1 / 43/ 4× 3 / 85/ 8*15/ 16– 1 1 / 41/ 4× 1 / 85/ 163 5 / 16– 3 3 / 47/ 8× 7 / 163/ 41 5 / 16– 1 3 / 85/ 16× 5 / 325/ 163 13 / 16– 4 1 / 21 × 1 / 23/ 41 7 / 16– 1 3 / 43/ 8× 3 / 163/ 84 9 / 16– 5 1 / 21 1 / 4× 5 / 83/ 41 13 / 16– 2 1 / 41/ 2× 1 / 41/ 2* 5 9 / 16– 6 1 / 21 1 / 2× 3 / 43/ 4* Hub size may require smaller setscrews in some cases.Maximum face run-out tolerancesRoot diameterof sprocket,Maximum face run-outtotal indicator reading, inchesinches Fully machined Sprockets with unfiinished facessprockets (forged or hot-rolled steel plate)Up to 10.000 .010.001 .003 × root diameter10.001 to 40.000 per inch of (.020 minimum, .090 maximum)root dia.40.001 or more .040Maximum pitch line eccentricity tolerancesCommercial sprockets will be furnished within the eccentricitytolerances tabled below.Root diameterof sprocket,Maximum eccentricity,total indicator reading, inchesinches Fully machined Sprockets with unfiinished facessprockets (forged or hot-rolled steel plate)Up to 4.000 .0064.001 to 6.000 .0086.001 to 10.000 .010 .001" × root diameter + .010".001 (.030" maximum)10.001 to 26.000 per inch ofroot dia.26.001 or more .026Standard keyseat tolerancesKeyseats will be furnished within these standard tolerances,unless otherwise specified.DimensionTolerance, inchesWidth of keyseat +.002 – .000Depth of straight keyseat +.010 – .000Depth of taper keyseat +.000 – .010Sprockets for high speed drives or other applications requiringa minimum amount of pitch line eccentricity can be furnishedwithin the following tolerances at a reasonable extra cost.Root diameter of sprocket,inchesMaximum eccentricitytotal indicator reading,inchesUp to 4.000 .0044.001 to 8.000 .0068.001 to 30.000 .008Negative tolerance on root diameters NGNumberChain numberofteeth 25 35 40 41 50 60 80 100 120 140 160 180 200 240G-2Up to 15 .004 .004 .004 .004 .005 .005 .006 .007 .007 .008 .009 .010 .010 .01216 to 24 .004 004 .005 .005 .005 .006 .007 .008 .009 .010 .011 .012 .013 .01525 to 35 .004 .004 .005 .005 .006 .007 .008 .009 .010 .012 .013 .014 .015 .01836 to 48 .005 .005 .006 .006 .007 .008 .009 .010 .012 .013 .015 .016 .018 .02149 to 63 .005 .005 .006 .006 .008 .009 .010 .012 .013 .015 .017 .018 .020 .02464 to 80 .005 .006 .007 .007 .009 .010 .011 .013 .015 .017 .019 .012 .023 .02781 to 99 .005 .006 .007 .007 .009 .010 .012 .014 .016 .019 .021 .023 .025 .030100 to 120 .006 .006 .008 .008 .009 .011 .013 .016 .018 .020 .023 .025 .028 .033121 to 143 .006 .007 .008 .008 .010 .012 .014 .017 .019 .022 .025 .028 .030 .036144 and up .006 .007 .009 .009 .011 .013 .015 .018 .021 .024 .027 .030 .033 .039N No plus tolerances