section 2 section 2 standard inch series radial bearings carry moderate radial and thrust loads at low operating torque and provide high performance within small envelope designs a1 miniature and instrument bearings of both the metric and inch configurations meet the tolerances of abma standard 20 for abec 1 metric series bearings stainless steel or chrome steel bearings are available with crown or ribbon type metallic cages open or shielded bearings may be flanged or unflanged various types of seals may be specified depending upon the anticipated environment to which the bearings will be exposed see engineering section for seal information inch series bearings radial open bearings 2-2 bore sizes .0400 7500 radial shielded bearings 2-4 bore sizes .0469 7500 radial flanged open bearings 2-6 bore sizes .0400 3750 radial flanged shielded bearings 2-8 bore sizes .0469 3750 extended inner ring radial o
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inch series radial open bearings bore d o.d d radial open bearings width b basic number r .0400 .0469 .0550 .0781 .0937 .1250 .1562 .1875 .2500 .1875 .3125 .2500 .3125 .3750 .3750 .3125 .3125 .3750 .5000 .3750 .5000 .6250 .7500 .5000 .6250 .8750 .7500 .8750 1.0000 .0469 .0625 .0781 .0937 .0625 .1094 .0937 .1094 .1094 .1562 .1094 .1094 .1250 .1562 .1250 .1250 .1960 .2188 .1562 .1562 .2188 .1562 .1562 .1562 ddri-2 ddri-21/2 ddri-3 ddri-4 ddri-3332 ddri-5 ddri-418 ddri-518 ddri-618 ddr-2 ddri-5532 ddri-5632 ddri-6632 ddr-3 ddri-614 ddri-814 ddr-4 ddri-1214 ddri-8516 ddri-1038 ddri-1438 ddri-1212 ddri-1458 ddri-1634 r d lo d li .0937 .1250 .1250 .1250 .1250 .1562 .1875 .1875 .1875 .2500 .2500 .2500 .2500 .3125 .3750 .3750 .5000 .6250 .7500 b notes 1 inch to metric conversion see engineering section 2 basic numbers shown above include code dd for nmb developed 400 series martensitic stainless steel if chrome steel is desired delete dd 3 abec 1 3 5 and 7 tolerances apply 4 r maximum sh
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radial open bearings inch series radial open bearings ball complement no z size dw dyn cr load ratings kgs static cor dyn cr lbs static cor speed rating nmax/fn rpm/1000 brg wgt gms std ref reference diameter li lo fillet radius r .064 .081 .093 .122 .118 .173 .166 .173 .173 .200 .221 .221 .235 .276 .285 .330 .323 .386 .362 .458 .520 .587 .713 .837 .100 .124 .159 .193 .163 .270 .221 .270 .270 .320 .279 .279 .343 .433 .340 .431 .513 .598 .450 .543 .741 .672 .798 .922 .003 .003 .003 .003 .003 .003 .003 .003 .005 .012 .003 .003 .003 .012 .003 .005 .012 .016 .005 .010 .016 .010 .010 .010 6 6 5 6 7 6 7 6 6 7 7 7 8 7 13 10 8 6 11 12 7 16 18 22 .025 1/32 3/64 3/64 1/32 1/16 1.0mm 1/16 1/16 1/16 3/64 3/64 1/16 3/32 1.0mm 1/16 3/32 9/64 1/16 1/16 5/32 1/16 1/16 1/16 11 16 27 34 19 58 29 58 58 66 40 40 73 134 43 85 150 246 90 93 337 108 112 123 3 5 8 11 6 19 10 19 19 23 15 15 28 50 21 38 61 93 43 38 140 51 57 70 24 35 60 75 42 128 64 128 128 146 88 88 161 295 95 187 331 542 198 205 743 238 247
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inch series radial shielded bearings bore d o.d d width b b 1 shield b 2 shields radial shielded bearings basic number b .0469 .0550 .0781 .0937 .0937 .1562 .1875 .2500 .1875 .3125 .2500 .3125 .3750 .3750 .3125 .3125 .3750 .5000 .3750 .5000 .6250 .7500 .5000 .6250 .8750 .7500 .8750 1.0000 r d li d lo .0937 .0937 .1094 .0937 .1094 .0937 .1094 .1094 .1562 .1094 .1094 .1250 .1960 .1250 .1250 .1960 .2812 .1562 .1562 .2812 .1562 .1562 .1562 .0937 .1094 .1406 .0937 .1406 .1094 .1406 .1406 .1562 .1250 .1250 .1250 .1960 .1250 .1875 .1960 .2812 .1562 .1562 .2812 .1562 .1562 .1562 ddri-21/2 ddri-3 ddri-4 ddri-3332 ddri-5 ddri-418 ddri-518 ddri-618 ddr-2 ddri-5532 ddri-5632 ddri-6632 ddr-3 ddri-614 ddri-814 ddr-4 ddri-1214 ddri-8516 ddri-1038 ddri-1438 ddri-1212 ddri-1458 ddri-1634 .1250 .1250 .1250 .1250 .1562 .1875 .1875 .1875 .2500 .2500 .2500 .2500 .3125 .3750 .3750 rbrd li d lo .5000 .6250 .7500 r notes 1 inch to metric conversion see engineering section 2 basic numbers shown above include
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radial shielded bearings inch series radial shielded bearings fillet radius r ball complement no z size dw dyn cr load ratings kgs static cor dyn cr lbs static cor speed rating nmax/fn rpm/1000 brg wgt gms std ref reference diameter li lo .081 .093 .122 .122 .173 .161 .173 .173 .200 .221 .221 .235 .276 .285 .330 .324 .340 .362 .458 .488 .587 .713 .837 .135 .169 .205 .168 .283 .230 .283 .283 .322 .288 .288 .343 .433 .350 .454 .513 .641 .463 .543 .749 .689 .815 .939 .003 .003 .003 .003 .003 .003 .003 .005 .012 .003 .003 .003 .012 .003 .005 .012 .016 .005 .010 .016 .010 .010 .010 6 5 6 7 6 7 6 6 7 7 7 8 7 13 10 8 6 11 12 7 16 18 22 1/32 3/64 3/64 1/32 1/16 1.0mm 1/16 1/16 1/16 3/64 3/64 1/16 3/32 1.0mm 1/16 3/32 9/64 1/16 1/16 5/32 1/16 1/16 1/16 16 27 34 19 58 29 58 58 66 40 40 73 134 43 85 150 246 90 93 339 108 112 123 5 8 11 6 19 10 19 19 23 15 15 28 50 21 38 61 93 43 38 142 51 57 70 35 60 75 42 128 64 128 128 146 88 88 161 295 95 187 331 542 198 205 747 238 247 271 11 18 24 13 42 22
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inch series radial o p en bearingsb bf radial flanged f l a ng e d open bearings bore d o.d d width b basic number d li d r lo df .0400 .0469 .0550 .0781 .0937 .0937 .1250 .1250 .1250 .1250 .1562 .1875 .1875 .1875 .2500 .2500 .2500 .3125 .3750 .1250 .1562 .1875 .2500 .1875 .3125 .2500 .3125 .3750 .3750 .3125 .3125 .3750 .5000 .3750 .5000 .6250 .5000 .8750 .0469 .0625 .0781 .0937 .0625 .1094 .0937 .1094 .1094 .1562 .1094 .1094 .1250 .1562 .1250 .1250 .1960 .1562 .2812 ddrif-2 ddrif-21/2 ddrif-3 ddrif-4 ddrif-3332 ddrif-5 ddrif-418 ddrif-518 ddrif-618 ddrf-2 ddrif-5532 ddrif-5632 ddrif-6632 ddrf-3 ddrif-614 ddrif-814 ddrf-4 ddrif-8516 ddrif-1438 r notes 1 inch to metric conversion see engineering section 2 basic numbers shown above include code dd for nmb developed 400 series martensitic stainless steel if chrome steel is desired delete dd 3 abec 1 3 5 and 7 tolerances apply 4 r maximum shaft or housing fillet radius that bearing corners will clear dd is a trademark of nmb rad
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radial flanged open ad ial fla nged r bearings load ratings kgs dyn static cr cor dyn cr inch series o p en bearings speed rating lbs static nmax/fn cor rpm/1000 brg wgt gms std ref flange dia df flange width bf reference diameter li lo fillet radius r ball complement no size z dw .171 .203 .234 .296 .234 .359 .296 .359 .422 .440 .359 .359 .422 .565 .422 .547 .690 .547 .969 .013 .013 .023 .023 .018 .023 .023 .023 .023 .030 .023 .023 .023 .042 .023 .023 .042 .031 .062 .064 .081 .093 .122 .118 .173 .166 .173 .173 .200 .221 .221 .235 .276 .285 .330 .323 .362 .520 .100 .124 .159 .193 .163 .270 .221 .270 .270 .320 .279 .279 .324 .433 .340 .431 .513 .450 .741 .003 .003 .003 .003 .003 .003 .003 .003 .005 .012 .003 .003 .003 .012 .003 .005 .012 .005 .016 6 6 5 6 7 6 7 6 6 7 7 7 8 7 13 10 8 11 7 .025 1/32 3/64 3/64 1/32 1/16 1.0mm 1/16 1/16 1/16 3/64 3/64 1/16 3/32 1.0mm 1/16 3/32 1/16 5/32 11 16 27 34 19 58 29 58 58 66 40 40 73 134 43 85 150 90 337 3 5 8 11 6 19 10 19 19 23 15 15 28 50 21 38
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inch series radial shielded bearings bore d radial flanged f l a ng e d shielded bearings shielded width b 1 or 2 shields o.d d basic number r r df lo d li d .0469 .0550 .0781 .0937 .0937 .1250 .1250 .1250 .1250 .1562 .1875 .1875 .1875 .2500 .2500 .1562 .1875 .2500 .1875 .3125 .2500 .3125 .3750 .3750 .3125 .3125 .3750 .5000 .3750 .5000 .6250 .5000 .8750 .0937 .1094 .1406 .0937 .1406 .1094 .1406 .1406 .1562 .1250 .1250 .1250 .1960 .1250 .1875 .1960 .1562 .2812 ddrif-21/2 ddrif-3 ddrif-4 ddrif-3332 ddrif-5 ddrif-418 ddrif-518 ddrif-618 ddrf-2 ddrif-5532 ddrif-5632 ddrif-6632 ddrf-3 ddrif-614 ddrif-814 ddrf-4 ddrif-8516 ddrif-1438 bf b r .2500 .3125 .3750 r d f lo d li d bf b notes 1 inch to metric conversion see engineering section 2 basic numbers shown above include code dd for nmb developed 400 series martensitic stainless steel if chrome steel is desired delete dd 3 abec 1 3 5 and 7 tolerances apply 4 r maximum shaft or housing fillet radius that bearing corners will clear dd
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radial flange shielded ad ial fla nged r bearings inch series shielded bearings ball complement no z size dw dyn cr load ratings kgs static cor dyn cr lbs static cor speed rating nmax/fn rpm/1000 brg wgt gms std ref flange dia df flange width bf reference diameter li lo fillet radius r .203 .234 .296 .234 .359 .296 .359 .422 .440 .359 .359 .422 .565 .422 .547 .690 .547 .969 .031 .031 .031 .031 .031 .031 .031 .031 .030 .036 .036 .031 .042 .036 .045 .042 .031 .062 .081 .093 .122 .122 .173 .161 .173 .173 .200 .221 .221 .235 .276 .285 .330 .323 .362 .488 .135 .169 .205 .168 .283 .230 .283 .283 .322 .288 .288 .343 .433 .348 .454 .513 .463 .749 .003 .003 .003 .003 .003 .003 .003 .005 .012 .003 .003 .003 .012 .003 .005 .012 .005 .016 6 5 6 7 6 7 6 6 7 7 7 8 7 13 10 8 11 7 1/32 3/64 3/64 1/32 1/16 1.0mm 1/16 1/16 1/16 3/64 3/64 1/16 3/32 1.0mm 1/16 3/32 1/16 5/32 16 27 34 19 58 29 58 58 66 40 40 73 134 43 85 150 90 339 5 8 11 6 19 10 19 19 23 15 15 28 50 21 38 61 43 142 35 60 75 42 128 64 128
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extended inner ring extenderadial open bearings dinn er r in g flanged unflanged width 1 or 2 shields b c inch series r bore d o.d d basic number r d lo d li .0400 .0469 .0550 .0781 .0937 .0937 .1250 .1250 .1250 .1250 .1562 .1875 .1875 .2500 .2500 .3125 .1250 .1562 .1875 .2500 .1875 .3125 .2500 .3125 .3750 .3750 .3125 .3125 .3750 .3750 .5000 .5000 .0781 .0937 .1094 .1250 .0937 .1406 .1250 .1406 .1406 .1875 .1406 .1406 .1562 .1562 .1562 .1875 .0469 .0625 .0781 .0937 .0625 .1094 .0937 .1094 .1094 .1562 .1094 .1094 .1250 .1250 .1250 .1562 ddri-2 ddri-21/2 ddri-3 ddri-4 ddri-3332 ddri-5 ddri-418 ddri-518 ddri-618 ddr-2 ddri-5532 ddri-5632 ddri-6632 ddri-614 ddri-814 ddri-8516 cbrr df lo d li d bf c b notes 1 inch to metric conversion see engineering section 2 basic numbers shown above include code dd for nmb developed 400 series martensitic stainless steel if chrome steel is desired delete dd 3 abec 1 3 5 and 7 tolerances apply 4 r maximum shaft or housing fillet radius that bearing
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extended inner ring radialxtende d inner e open bearings flanged unflanged flange dia df flange width bf reference diameter li lo fillet radius r ball complement no size z dw load ratings kgs dyn cr static cor dyn cr inch series r in g speed rating nmax/fn rpm/1000 lbs static cor .171 .203 .234 .296 .234 .359 .296 .359 .422 .440 .359 .359 .422 .422 .547 .547 .013 .013 .023 .023 .018 .023 .023 .023 .023 .030 .023 .023 .023 .023 .023 .031 .064 .081 .093 .122 .118 .173 .166 .173 .173 .200 .221 .221 .235 .285 .330 .362 .100 .124 .159 .193 .163 .270 .221 .270 .270 .320 .279 .279 .324 .340 .431 .450 .003 .003 .003 .003 .003 .003 .003 .003 .005 .012 .003 .003 .003 .003 .005 .005 6 6 5 6 7 6 7 6 6 7 7 7 8 13 10 11 .025 1/32 3/64 3/64 1/32 1/16 1.0mm 1/16 1/16 1/16 3/64 3/64 1/16 1.0mm 1/16 1/16 11 16 27 34 19 58 29 58 58 66 40 40 73 43 85 90 3 5 8 11 6 19 10 19 19 23 15 15 28 21 38 43 24 35 60 75 42 128 64 128 128 146 88 88 161 95 187 198 7 11 18 24 13 42 22 42 42 51 33 33 62 46 84 95 192 149
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extended inner ring extenderadial shielded bearings dinn er r in g flanged and unflanged bore d o.d d width 1 or 2 shields b c basic number inch series r r lo d li d .0469 .0550 .0781 .0937 .0937 .1250 .1250 .1250 .1250 .1562 .1875 .1875 .1875 .2500 .2500 .2500 .3125 .1562 .1875 .2500 .1875 .3125 .2500 .3125 .3750 .3750 .3125 .3125 .3750 .5000 .3750 .5000 .6250 .5000 .1250 .1406 .1719 .1250 .1719 .1406 .1719 .1719 .1875 .1562 .1562 .1562 .2272 .1562 .2188 .2260 .1875 .0937 .1094 .1406 .0937 .1406 .1094 .1406 .1406 .1562 .1250 .1250 .1250 .1960 .1250 .1875 .1960 .1562 ddri-21/2 ddri-3 ddri-4 ddri-3332 ddri-5 ddri-418 ddri-518 ddri-618 ddr-2 ddri-5532 ddri-5632 ddri-6632 ddr-3 ddri-614 ddri-814 ddr-4 ddri-8516 cbrr df lo d li d bf c b notes 1 inch to metric conversion see engineering section 2 basic numbers shown above include code dd for nmb developed 400 series martensitic stainless steel if chrome steel is desired delete dd 3 abec 1 3 5 and 7 tolerances apply 4 r maximum shaft o
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extended inner ring exten bearings radial shielded de d inner flanged and unflanged load ratings flange dia df flange width bf reference diameter li lo fillet radius r ball complement no size z dw kgs dyn cr static cor dyn cr inch series r in g lbs static cor speed rating nmax/fn rpm/1000 .203 .234 .296 .234 .359 .296 .359 .422 .440 .359 .359 .422 .565 .422 .547 .690 .547 .031 .031 .031 .031 .031 .031 .031 .031 .030 .036 .036 .031 .042 .036 .045 .042 .031 .081 .093 .122 .122 .173 .161 .173 .173 .200 .221 .221 .235 .276 .285 .330 .323 .362 .135 .169 .205 .168 .283 .230 .283 .283 .322 .288 .288 .343 .433 .348 .454 .513 .463 .003 .003 .003 .003 .003 .003 .003 .005 .012 .003 .003 .003 .012 .003 .005 .012 .005 6 5 6 7 6 7 6 6 7 7 7 8 7 13 10 8 11 1/32 3/64 3/64 1/32 1/16 1.0mm 1/16 1/16 1/16 3/64 3/64 1/16 3/32 1.0mm 1/16 3/32 1/16 16 27 34 19 58 29 58 58 66 40 40 73 134 43 85 150 90 5 8 11 6 19 10 19 19 23 15 15 28 50 21 38 61 43 35 60 75 42 128 64 128 128 146 88 88 161 295 95 187 331 198
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818-341-0820
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