NMB Miniature and Instrument Bearings From NPB
NMB Miniature Bearings Part Interchange Tables
For product inquiries call (855) 853-2230 to speak with a dedicated NMB sales representative or email sales@nationalprecision.com.
National Precision offers an extensive selection of ball, needle, spherical, and plain bearings. In addition to the standard inch and metric series we offer a full range of specialty bearings from a modified dimension to bearings that reach speeds up to 500,000 RPM.
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Unflanged Bearings Interchange
Unflanged Bearings Interchange | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Bore Diameter | Outside Diameter | Unflanged NMB Bearing Part Number |
Standard Bearing Cross Reference Part Number |
Unflanged Width | |||||||
Open | 1 Shield (Z) | 2 Shields (ZZ) | |||||||||
Inch | Metric | Inch | Metric | Inch | Metric | Inch | Metric | Inch | Metric | ||
0.0394 | 1 | 0.1181 | 3 | DDL310 | S681 | 0.0394 | 1 | — | — | — | — |
0.04 | 1.02 | 0.125 | 3.18 | DDRI2 | SR09 | 0.0469 | 1.19 | — | — | — | — |
0.0469 | 1.19 | 0.1562 | 3.97 | DDRI21/2 | SR0 | 0.0625 | 1.59 | 0.0937 | 2.38 | 0.0937 | 2.38 |
0.055 | 1.4 | 0.1875 | 4.76 | DDRI3 | SR1 | 0.0781 | 1.98 | 0.0937 | 2.38 | 0.1094 | 2.78 |
0.0591 | 1.5 | 0.1575 | 4 | DDL415 | S681X | 0.0472 | 1.2 | — | — | — | — |
0.0591 | 1.5 | 0.1969 | 5 | DDR515 | S691X | 0.0787 | 2 | 0.1024 | 2.6 | 0.1024 | 2.6 |
0.0591 | 1.5 | 0.2362 | 6 | DDR615 | S601X | 0.0984 | 2.5 | 0.1181 | 3 | 0.1181 | 3 |
0.0781 | 1.98 | 0.25 | 6.35 | DDRI4 | SR14 | 0.0937 | 2.38 | 0.1094 | 2.78 | 0.1406 | 3.57 |
0.0787 | 2 | 0.1969 | 5 | DDL520 | S682 | 0.0591 | 1.5 | — | — | 0.0906 | 2.3 |
0.0787 | 2 | 0.2362 | 6 | DDR620 | S692 | 0.0906 | 2.3 | 0.1181 | 3 | 0.1181 | 3 |
0.0787 | 2 | 0.2756 | 7 | DDR720 | S602 | 0.1102 | 2.8 | 0.1378 | 3.5 | 0.1378 | 3.5 |
0.0937 | 2.38 | 0.1875 | 4.76 | DDRI3332 | SR133 | 0.0625 | 1.59 | 0.0937 | 2.38 | 0.0937 | 2.38 |
0.0937 | 2.38 | 0.3125 | 7.94 | DDRI5 | SR15 | 0.1094 | 2.78 | 0.1094 | 2.78 | 0.1406 | 3.57 |
0.0984 | 2.5 | 0.2362 | 6 | DDL625 | S682X | 0.0709 | 1.8 | 0 | 0.1024 | 2.6 | |
0.0984 | 2.5 | 0.2756 | 7 | DDR725 | S692X | 0.0984 | 2.5 | 0.1378 | 3.5 | 0.1378 | 3.5 |
0.0984 | 2.5 | 0.315 | 8 | DDR825 | S602X | 0.1102 | 2.8 | 0.1575 | 4 | 0.1575 | 4 |
0.1181 | 3 | 0.2362 | 6 | DDL630 | SMR63 | 0.0787 | 2 | — | — | 0.0984 | 2.5 |
0.1181 | 3 | 0.2756 | 7 | DDL730 | S683 | 0.0787 | 2 | — | — | 0.1181 | 3 |
0.1181 | 3 | 0.315 | 8 | DDR830 | S693 | 0.1181 | 3 | 0.1575 | 4 | 0.1575 | 4 |
0.1181 | 3 | 0.3543 | 9 | DDR930 | S603 | 0.1181 | 3 | 0.1969 | 5 | 0.1969 | 5 |
0.1181 | 3 | 0.3937 | 10 | DDR1030 | S623 | 0.1575 | 4 | 0.1575 | 4 | 0.1575 | 4 |
0.125 | 3.18 | 0.25 | 6.35 | DDRI418 | SR144 | 0.0937 | 2.38 | 0.0937 | 2.38 | 0.1094 | 2.78 |
0.125 | 3.18 | 0.3125 | 7.94 | DDRI518 | SR25 | 0.1094 | 2.78 | 0.1094 | 2.78 | 0.1406 | 3.57 |
0.125 | 3.18 | 0.375 | 9.53 | DDRI618 | SR26 | 0.1094 | 2.78 | 0.1094 | 2.78 | 0.1406 | 3.57 |
0.125 | 3.18 | 0.375 | 9.53 | DDR2 | SR2 | 0.1562 | 3.97 | 0.1562 | 3.97 | 0.1562 | 3.97 |
0.125 | 3.18 | 0.5 | 12.7 | DDR2A | SR2A | 0.1719 | 4.37 | 0.1719 | 4.37 | 0.1719 | 4.37 |
0.1562 | 3.97 | 0.3125 | 7.94 | DDRI5532 | SR155 | 0.1094 | 2.78 | 0.1094 | 2.78 | 0.125 | 3.18 |
0.1575 | 4 | 0.2756 | 7 | DDL740 | SMR74 | 0.0787 | 2 | — | — | 0.0984 | 2.5 |
0.1575 | 4 | 0.315 | 8 | DDL840 | SMR84 | 0.0787 | 2 | — | — | 0.1181 | 3 |
0.1575 | 4 | 0.3543 | 9 | DDL940 | S684 | 0.0984 | 2.5 | — | — | 0.1575 | 4 |
0.1575 | 4 | 0.3937 | 10 | DDL1040 | SR104 | 0.1181 | 3 | — | — | 0.1575 | 4 |
0.1575 | 4 | 0.4331 | 11 | DDR1140 | S694 | 0.1575 | 4 | 0.1575 | 4 | 0.1575 | 4 |
0.1575 | 4 | 0.4724 | 12 | DDR1240 | S604 | 0.1575 | 4 | 0.1575 | 4 | 0.1575 | 4 |
0.1575 | 4 | 0.5118 | 13 | DDR1340 | S624 | 0.1969 | 5 | 0.1969 | 5 | 0.1969 | 5 |
0.1575 | 4 | 0.6299 | 16 | DDR1640 | S634 | 0.1969 | 5 | — | — | 0.1969 | 5 |
0.1875 | 4.76 | 0.3125 | 7.94 | DDRI5632 | SR156 | 0.1094 | 2.78 | 0.1094 | 2.78 | 0.125 | 3.18 |
0.1875 | 4.76 | 0.375 | 9.53 | DDRI6632 | SR166 | 0.125 | 3.18 | 0.125 | 3.18 | 0.125 | 3.18 |
0.1875 | 4.76 | 0.5 | 12.7 | DDR3 | SR3 | 0.1562 | 3.97 | 0.196 | 4.98 | 0.196 | 4.98 |
0.1969 | 5 | 0.315 | 8 | DDL850 | SMR85 | 0.0787 | 2 | — | — | 0.0984 | 2.5 |
0.1969 | 5 | 0.3543 | 9 | DDL950 | SMR95 | 0.0984 | 2.5 | — | — | 0.1181 | 3 |
0.1969 | 5 | 0.3937 | 10 | DDL1050 | SMR105 | 0.1181 | 3 | — | — | 0.1575 | 4 |
0.1969 | 5 | 0.4331 | 11 | DDL1150 | S685 | 0.1181 | 3 | — | — | 0.1969 | 5 |
0.1969 | 5 | 0.5118 | 13 | DDR1350 | S695 | 0.1575 | 4 | 0.1575 | 4 | 0.1575 | 4 |
0.1969 | 5 | 0.5512 | 14 | DDR1450 | S605 | 0.1969 | 5 | 0.1969 | 5 | 0.1969 | 5 |
0.1969 | 5 | 0.6299 | 16 | DDR1650 | S625 | 0.1969 | 5 | 0.1969 | 5 | 0.1969 | 5 |
0.1969 | 5 | 0.748 | 19 | DDR1950 | S635 | 0.2362 | 6 | 0.2362 | 6 | 0.2362 | 6 |
0.2362 | 6 | 0.3937 | 10 | DDL1060 | SMR106 | 0.0984 | 2.5 | — | — | 0.1181 | 3 |
0.2362 | 6 | 0.4724 | 12 | DDL1260 | SMR126 | 0.1181 | 3 | — | — | 0.1575 | 4 |
0.2362 | 6 | 0.5118 | 13 | DDL1360 | S686 | 0.1378 | 3.5 | — | — | 0.1969 | 5 |
0.2362 | 6 | 0.5906 | 15 | DDR1560 | S696 | 0.1969 | 5 | 0.1969 | 5 | 0.1969 | 5 |
0.2362 | 6 | 0.6693 | 17 | DDR1760 | S606 | 0.2362 | 6 | 0.2362 | 6 | 0.2362 | 6 |
0.2362 | 6 | 0.748 | 19 | DDR1960 | S626 | 0.2362 | 6 | 0.2362 | 6 | 0.2362 | 6 |
0.25 | 6.35 | 0.375 | 9.53 | DDRI614 | SR168 | 0.125 | 3.18 | 0.125 | 3.18 | 0.125 | 3.18 |
0.25 | 6.35 | 0.5 | 12.7 | DDRI814 | SR188 | 0.125 | 3.18 | 0.125 | 3.18 | 0.1875 | 4.76 |
0.25 | 6.35 | 0.625 | 15.88 | DDR4 | SR4 | 0.196 | 4.98 | 0.196 | 4.98 | 0.196 | 4.98 |
0.25 | 6.35 | 0.75 | 19.05 | DDRI1214 | SR4A | 0.2188 | 5.56 | 0.2812 | 7.14 | 0.2812 | 7.14 |
0.2756 | 7 | 0.4331 | 11 | DDL1170 | SMR117 | 0.0984 | 2.5 | — | — | 0.1181 | 3 |
0.2756 | 7 | 0.5118 | 13 | DDL1370 | SMR137 | 0.1181 | 3 | — | — | 0.1575 | 4 |
0.2756 | 7 | 0.5512 | 14 | DDL1470 | S687 | 0.1378 | 3.5 | — | — | 0.1969 | 5 |
0.2756 | 7 | 0.748 | 19 | DDR1970 | S607 | 0.2362 | 6 | 0.2362 | 6 | 0.2362 | 6 |
0.2756 | 7 | 0.8661 | 22 | DDR2270 | S627 | 0.2756 | 7 | 0.2756 | 7 | 0.2756 | 7 |
0.3125 | 7.94 | 0.5 | 12.7 | DDRI8516 | SR1810 | 0.1562 | 3.97 | 0.1562 | 3.97 | 0.1562 | 3.97 |
0.315 | 8 | 0.4724 | 12 | DDL1280 | SMR128 | 0.0984 | 2.5 | — | — | 0.1378 | 3.5 |
0.315 | 8 | 0.5512 | 14 | DDL1480 | SMR148 | 0.1378 | 3.5 | — | — | 0.1575 | 4 |
0.315 | 8 | 0.6299 | 16 | DDL1680 | S688 | 0.1575 | 4 | — | — | 0.1969 | 5 |
0.315 | 8 | 0.748 | 19 | DDR1980 | S698 | 0.2362 | 6 | 0.2362 | 6 | 0.2362 | 6 |
0.315 | 8 | 0.8661 | 22 | DDR2280 | S608 | 0.2756 | 7 | 0.2756 | 7 | 0.2756 | 7 |
0.3543 | 9 | 0.6693 | 17 | DDL1790 | S689 | 0.1575 | 4 | — | — | 0.1969 | 5 |
0.3543 | 9 | 0.7874 | 20 | DDL2090 | S699 | 0.2362 | 6 | — | — | 0.2362 | 6 |
0.375 | 9.53 | 0.625 | 15.88 | DDRI1038 | SR620 | 0.1562 | 3.97 | 0.1562 | 3.97 | 0.1562 | 3.97 |
0.375 | 9.53 | 0.875 | 22.23 | DDRI1438 | SR6 | 0.2188 | 5.56 | 0.2812 | 7.14 | 0.2812 | 7.14 |
0.3937 | 10 | 0.748 | 19 | DDL1910 | S6800 | 0.1969 | 5 | — | — | 0.2756 | 7 |
0.5 | 12.7 | 0.75 | 19.05 | DDRI1212 | SR824 | 0.1562 | 3.97 | 0.1562 | 3.97 | 0.1562 | 3.97 |
0.625 | 15.88 | 0.875 | 22.23 | DDRI1458 | SR1028 | 0.1562 | 3.97 | 0.1562 | 3.97 | 0.1562 | 3.97 |
0.75 | 19.05 | 1 | 25.4 | DDRI1634 | SR1232 | 0.1562 | 3.97 | 0.1562 | 3.97 | 0.1562 | 3.97 |
Flanged Bearings Interchange
Flanged Bearings Interchange | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Bore Diameter | Outside Diameter | Flanged NMB Bearing Part Number |
Standard Flanged Bearing Cross Reference Part Number |
Flanged Width | |||||||
Open | 1 Shield (Z) | 2 Shields (ZZ) | |||||||||
Inch | Metric | Inch | Metric | Inch | Metric | Inch | Metric | Inch | Metric | ||
0.0394 | 1 | 0.1181 | 3 | DDLF310 | SF681 | 0.0394 | 1 | — | — | — | — |
0.04 | 1.02 | 0.125 | 3.18 | DDRIF2 | SFR09 | 0.0469 | 1.19 | — | — | — | — |
0.0469 | 1.19 | 0.1562 | 3.97 | DDRIF21/2 | SFR0 | 0.0625 | 1.59 | 0.0937 | 2.38 | 0.0937 | 2.38 |
0.055 | 1.4 | 0.1875 | 4.76 | DDRIF3 | SFR1 | 0.0781 | 1.98 | 0.1094 | 2.78 | 0.1094 | 2.78 |
0.0591 | 1.5 | 0.1575 | 4 | DDLF415 | SF681X | 0.0472 | 1.2 | — | — | — | — |
0.0591 | 1.5 | 0.1969 | 5 | DDRF515 | SF691X | 0.0787 | 2 | 0.1024 | 2.6 | 0.1024 | 2.6 |
0.0591 | 1.5 | 0.2362 | 6 | DDRF615 | SF601X | 0.0984 | 2.5 | 0.1181 | 3 | 0.1181 | 3 |
0.0781 | 1.98 | 0.25 | 6.35 | DDRIF4 | SFR14 | 0.0937 | 2.38 | 0.1406 | 3.57 | 0.1406 | 3.57 |
0.0787 | 2 | 0.1969 | 5 | DDLF520 | SF682 | 0.0591 | 1.5 | — | — | 0.0906 | 2.3 |
0.0787 | 2 | 0.2362 | 6 | DDRF620 | SF692 | 0.0906 | 2.3 | 0.1181 | 3 | 0.1181 | 3 |
0.0787 | 2 | 0.2756 | 7 | DDRF720 | SF602 | 0.1102 | 2.8 | 0.1378 | 3.5 | 0.1378 | 3.5 |
0.0937 | 2.38 | 0.1875 | 4.76 | DDRIF3332 | SFR133 | 0.0625 | 1.59 | 0.0937 | 2.38 | 0.0937 | 2.38 |
0.0937 | 2.38 | 0.3125 | 7.94 | DDRIF5 | SFR15 | 0.1094 | 2.78 | 0.1406 | 3.57 | 0.1406 | 3.57 |
0.0984 | 2.5 | 0.2362 | 6 | DDLF625 | SF682X | 0.0709 | 1.8 | — | — | 0.1024 | 2.6 |
0.0984 | 2.5 | 0.2756 | 7 | DDRF725 | SF692X | 0.0984 | 2.5 | 0.1378 | 3.5 | 0.1378 | 3.5 |
0.0984 | 2.5 | 0.315 | 8 | DDRF825 | SF602X | 0.1102 | 2.8 | 0.1575 | 4 | 0.1575 | 4 |
0.1181 | 3 | 0.2362 | 6 | DDLF630 | SFMR63 | 0.0787 | 2 | — | — | 0.0984 | 2.5 |
0.1181 | 3 | 0.2756 | 7 | DDLF730 | SF683 | 0.0787 | 2 | — | — | 0.1181 | 3 |
0.1181 | 3 | 0.315 | 8 | DDRF830 | SF693 | 0.1181 | 3 | 0.1575 | 4 | 0.1575 | 4 |
0.1181 | 3 | 0.3543 | 9 | DDRF930 | SF603 | 0.1181 | 3 | 0.1969 | 5 | 0.1969 | 5 |
0.1181 | 3 | 0.3937 | 10 | DDRF1030 | SF623 | 0.1575 | 4 | 0.1575 | 4 | 0.1575 | 4 |
0.125 | 3.18 | 0.25 | 6.35 | DDRIF418 | SFR144 | 0.0937 | 2.38 | 0.1094 | 2.78 | 0.1094 | 2.78 |
0.125 | 3.18 | 0.3125 | 7.94 | DDRIF518 | SFR25 | 0.1094 | 2.78 | 0.1406 | 3.57 | 0.1406 | 3.57 |
0.125 | 3.18 | 0.375 | 9.53 | DDRIF618 | SFR26 | 0.1094 | 2.78 | 0.1406 | 3.57 | 0.1406 | 3.57 |
0.125 | 3.18 | 0.375 | 9.53 | DDRF2 | SFR2 | 0.1562 | 3.97 | 0.1562 | 3.97 | 0.1562 | 3.97 |
0.1562 | 3.97 | 0.3125 | 7.94 | DDRIF5532 | SFR155 | 0.1094 | 2.78 | 0.125 | 3.18 | 0.125 | 3.18 |
0.1575 | 4 | 0.2756 | 7 | DDLF740 | SFMR74 | 0.0787 | 2 | — | — | 0.0984 | 2.5 |
0.1575 | 4 | 0.315 | 8 | DDLF840 | SFMR84 | 0.0787 | 2 | — | — | 0.1181 | 3 |
0.1575 | 4 | 0.3543 | 9 | DDLF940 | SF684 | 0.0984 | 2.5 | — | — | 0.1575 | 4 |
0.1575 | 4 | 0.3937 | 10 | DDLF1040 | SFR104 | 0.1181 | 3 | — | — | 0.1575 | 4 |
0.1575 | 4 | 0.4331 | 11 | DDRF1140 | SF694 | 0.1575 | 4 | 0.1575 | 4 | 0.1575 | 4 |
0.1575 | 4 | 0.4724 | 12 | DDRF1240 | SF604 | 0.1575 | 4 | 0.1575 | 4 | 0.1575 | 4 |
0.1575 | 4 | 0.5118 | 13 | DDRF1340 | SF624 | 0.1969 | 5 | 0.1969 | 5 | 0.1969 | 5 |
0.1575 | 4 | 0.6299 | 16 | DDRF1640 | SF634 | 0.1969 | 5 | 0.1969 | 5 | 0.1969 | 5 |
0.1875 | 4.76 | 0.3125 | 7.94 | DDRIF5632 | SFR156 | 0.1094 | 2.78 | 0.125 | 3.18 | 0.125 | 3.18 |
0.1875 | 4.76 | 0.375 | 9.53 | DDRIF6632 | SFR166 | 0.125 | 3.18 | 0.125 | 3.18 | 0.125 | 3.18 |
0.1875 | 4.76 | 0.5 | 12.7 | DDRF3 | SFR3 | 0.1562 | 3.97 | 0.196 | 4.98 | 0.196 | 4.98 |
0.1969 | 5 | 0.315 | 8 | DDLF850 | SFMR85 | 0.0787 | 2 | — | — | 0.0984 | 2.5 |
0.1969 | 5 | 0.3543 | 9 | DDLF950 | SFMR95 | 0.0984 | 2.5 | — | — | 0.1181 | 3 |
0.1969 | 5 | 0.3937 | 10 | DDLF1050 | SFMR105 | 0.1181 | 3 | — | — | 0.1575 | 4 |
0.1969 | 5 | 0.4331 | 11 | DDLF1150 | SF685 | 0.1181 | 3 | — | — | 0.1969 | 5 |
0.1969 | 5 | 0.5118 | 13 | DDRF1350 | SF695 | 0.1575 | 4 | 0.1575 | 4 | 0.1575 | 4 |
0.1969 | 5 | 0.5512 | 14 | DDRF1450 | SF605 | 0.1969 | 5 | 0.1969 | 5 | 0.1969 | 5 |
0.1969 | 5 | 0.6299 | 16 | DDRF1650 | SF625 | 0.1969 | 5 | 0.1969 | 5 | 0.1969 | 5 |
0.1969 | 5 | 0.748 | 19 | DDRF1950 | SF635 | 0.2362 | 6 | 0.2362 | 6 | 0.2362 | 6 |
0.2362 | 6 | 0.3937 | 10 | DDLF1060 | SFMR106 | 0.0984 | 2.5 | — | — | 0.1181 | 3 |
0.2362 | 6 | 0.4724 | 12 | DDLF1260 | SFMR126 | 0.1181 | 3 | — | — | 0.1575 | 4 |
0.2362 | 6 | 0.5118 | 13 | DDLF1360 | SF686 | 0.1378 | 3.5 | — | — | 0.1969 | 5 |
0.2362 | 6 | 0.5906 | 15 | DDRF1560 | SF696 | 0.1969 | 5 | 0.1969 | 5 | 0.1969 | 5 |
0.2362 | 6 | 0.6693 | 17 | DDRF1760 | SF606 | 0.2362 | 6 | 0.2362 | 6 | 0.2362 | 6 |
0.2362 | 6 | 0.748 | 19 | DDRF1960 | SF626 | 0.2362 | 6 | 0.2362 | 6 | 0.2362 | 6 |
0.25 | 6.35 | 0.375 | 9.53 | DDRIF614 | SFR168 | 0.125 | 3.18 | 0.125 | 3.18 | 0.125 | 3.18 |
0.25 | 6.35 | 0.5 | 12.7 | DDRIF814 | SFR188 | 0.125 | 3.18 | 0.1875 | 4.76 | 0.1875 | 4.76 |
0.25 | 6.35 | 0.625 | 15.88 | DDRF4 | SFR4 | 0.196 | 4.98 | 0.196 | 4.98 | 0.196 | 4.98 |
0.2756 | 7 | 0.4331 | 11 | DDLF1170 | SFMR117 | 0.0984 | 2.5 | — | — | 0.1181 | 3 |
0.2756 | 7 | 0.5118 | 13 | DDLF1370 | SFMR137 | 0.1181 | 3 | — | — | 0.1575 | 4 |
0.2756 | 7 | 0.5512 | 14 | DDLF1470 | SF687 | 0.1378 | 3.5 | — | — | 0.1969 | 5 |
0.2756 | 7 | 0.748 | 19 | DDRF1970 | SF607 | — | — | — | — | — | — |
0.2756 | 7 | 0.8661 | 22 | DDRF2270 | SF627 | 0.2756 | 7 | 0.2756 | 7 | 0.2756 | 7 |
0.3125 | 7.94 | 0.5 | 12.7 | DDRIF8516 | SFR1810 | 0.1562 | 3.97 | 0.1562 | 3.97 | 0.1562 | 3.97 |
0.315 | 8 | 0.4724 | 12 | DDLF1280 | SFMR128 | 0.0984 | 2.5 | — | — | 0.1378 | 3.5 |
0.315 | 8 | 0.5512 | 14 | DDLF1480 | SFMR148 | 0.1378 | 3.5 | — | — | 0.1575 | 4 |
0.315 | 8 | 0.6299 | 16 | DDLF1680 | SF688 | 0.1575 | 4 | — | — | 0.1969 | 5 |
0.315 | 8 | 0.748 | 19 | DDRF1980 | SF698 | — | — | — | — | — | — |
0.315 | 8 | 0.8661 | 22 | DDRF2280 | SF608 | 0.2756 | 7 | 0.2756 | 7 | 0.2756 | 7 |
0.3543 | 9 | 0.6693 | 17 | DDLF1790 | SF689 | 0.1575 | 4 | — | — | 0.1969 | 5 |
0.375 | 9.53 | 0.875 | 22.23 | DDRIF1438 | SFR6 | 0.2812 | 7.14 | 0.2812 | 7.14 | 0.2812 | 7.14 |
0.3937 | 10 | 0.748 | 19 | DDLF1790 | SF6800 | — | — | — | — | — | — |