Needle Roller Bearings

Drawn Cup Needle Rollers

Drawn cup needle roller bearings are complete bearing units consisting of a thin-walled, drawn outer cup and a needle roller, available in full complement or cage assembly. Needle rollers have particularly compact radial dimensions and require a hardened and ground shaft as a raceway. Inner rings can be used for applications where it is impractical to use the shaft as the inner raceway.

Drawn cup needle bearings are ideal for housing bores that are of low rigidity like cast iron, aluminum or plastic. Mechanical efficiency is improved with needle roller bearings because the rotating radius and torque is small. Due to the small bearing volume and weight, the moment of inertia of the bearing is minimized when put in motion, therefore requiring lower torque.

Choosing a bearing with a closed end will protect against moisture and contaminants and also help prevent injury from exposed rotating shafts. A sealed bearing is intended for retaining grease and for keeping out contaminants and spray. Drawn cup needle rollers are offered in two types; caged or full complement.

Caged bearings utilize fewer rollers which reduces friction, and can therefore handle higher speeds. Specially designed cages guide the rollers at their ends, which decreases friction. Guiding at the end of the rollers also prevents skewing and maximizes roller stability. Caged needle bearings are offered with either a plastic or metal cage. Metal cages are ideal for maximum strength and life requirements. Reinforced plastic is an option when operating conditions permit.

Full Complement needle rollers are ideal for lower speeds and higher loads. Because these bearings utilize more rollers, higher loads are attainable. The lip of the drawn cup outer ring is turned in which mechanically retains the rollers while in motion. These outer rings are then filled with as many rollers as possible. Roller alignment is maintained even with repeated removal of the shaft.


DRAWN CUP NEEDLE ROLLER BEARING
Fw D C Koyo INA IKO
inch metric inch metric inch metric caged
open end
J		 caged
closed end
MJ		 open end
full comp.		 closed end
full comp.		 caged
open end
SCE		 caged
closed end
BCE		 caged
open end
BA..ZOH		 caged
closed end
BAM
0.125 3.175 0.250 6.350 0.250 6.350 B-24
0.156 3.970 0.281 7.140 0.250 6.350 B-2-1/2-4 SCE-2-1/2-4
0.156 3.970 0.281 7.140 0.312 7.920 B-2-1/2-5
0.188 4.763 0.344 8.733 0.250 6.350 B-34 M-341
0.188 4.763 0.344 8.733 0.375 9.530 B-36 M-361
0.250 6.350 0.438 11.112 0.250 6.350 JP-44-F B-44 M-441 SCE 44 BCE 44 BA 44 ZOH
0.250 6.350 0.438 11.112 0.312 7.920 J-45 MJ-451 B-45 M-451 SCE 45 BCE 45 BA 45 ZOH BAM 45
0.250 6.350 0.438 11.112 0.375 9.530 B-46
0.250 6.350 0.438 11.112 0.438 11.112 J-47 MJ-471 B-47 M-471 SCE 47 BCE 47 BA 47 ZOH BAM 47
0.313 7.938 0.500 12.700 0.312 7.920 J-55 MJ-551 B-55 M-551 SCE 55 BCE 55 BA 55 ZOH BAM 55
0.313 7.938 0.500 12.700 0.375 9.530 B-56 BA 56 ZOH BAM 56
0.313 7.938 0.500 12.700 0.438 11.112 J-57 MJ-571 B-57 M-571 SCE 57 BCE 57 BA 57 ZOH BAM 57
0.313 7.938 0.500 12.700 0.562 14.270 B-59 SCE 59 BCE 59 BA 59 ZOH BAM 59
0.313 7.938 0.563 14.288 0.438 11.112 BH-57 MH-571
0.313 7.938 0.563 14.288 0.563 14.275 BH-59
0.375 9.525 0.563 14.288 0.312 7.920 J-65 MJ-651 B-65 M-651 SCE 65 BCE 65 BA 65 ZOH BAM 65
0.375 9.525 0.563 14.288 0.375 9.520 J-66 MJ-661 B-66 M-661 SCE 66 BCE 66 BA 66 ZOH BAM 66
0.375 9.525 0.563 14.288 0.438 11.125 B-67
0.375 9.525 0.563 14.288 0.500 12.700 J-68 MJ-681 B-68 M-681 SCE 68 BCE 68 BA 68 ZOH BAM 68
0.375 9.525 0.563 14.288 0.562 14.270 B-69 SCE 69 BCE 69 BA 69 ZOH BAM 69
0.375 9.525 0.563 14.288 0.625 15.880 B-610 M-6101 SCE 610 BCE 610 BA 610 ZOH BAM 610
0.375 9.525 0.625 15.875 0.500 12.700 BH-68
0.438 11.112 0.625 15.875 0.375 9.520 B-76 BA 76 ZOH BAM 76
0.438 11.112 0.625 15.875 0.438 11.112 B-77 BA 77 ZOH BAM 77
0.438 11.112 0.625 15.875 0.500 12.700 J-78 MJ-781 B-78 M-781 SCE 78 BCE 78 BA 78 ZOH BAM 78
0.438 11.112 0.625 15.875 0.625 15.880 B-710 SCE 710 BCE 710 BA 710 ZOH BAM 710
0.438 11.112 0.688 17.475 0.500 12.700 BH-78
0.500 12.700 0.687 17.462 0.312 7.920 J-85 MJ-851 B-85 M-851 SCE 85 BCE 85 BA 85 ZOH BAM 85
0.500 12.700 0.687 17.462 0.375 9.520 B-86 M-861 SCE 86 BCE 86 BA 86 ZOH BAM 86
0.500 12.700 0.687 17.462 0.438 11.112 B-87 M-871 SCE 87 BCE 87 BA 87 ZOH BAM 87
0.500 12.700 0.687 17.462 0.500 12.700 J-88 MJ-881 B-88 M-881 SCE 88 BCE 88 BA 88 ZOH BAM 88
0.500 12.700 0.687 17.462 0.625 15.880 B-810 M-8101 SCE 810 BCE 810 BA 810 ZOH BAM 810
0.500 12.700 0.687 17.462 0.750 19.050 J-812 B-812 M-8121 SCE 812 BCE 812 BA 812 ZOH BAM 812
0.500 12.700 0.750 19.050 0.438 11.112 BH-87
0.500 12.700 0.750 19.050 0.500 12.700 BH-88
0.500 12.700 0.750 19.050 0.625 15.880 BH-810
0.500 12.700 0.750 19.050 0.750 19.050 BH-812 MH-8121
0.563 14.288 0.750 19.050 0.312 7.920 B-95 M-951 SCE 95 BCE 95 BA 95 ZOH BAM 95
0.563 14.288 0.750 19.050 0.375 9.520 B-96 M-961 SCE 96 BCE 96 BA 96 ZOH BAM 96
0.563 14.288 0.750 19.050 0.438 11.112 J-97 MJ-971 B-97 M-971 SCE 97 BCE 97 BA 97 ZOH BAM 97
0.563 14.288 0.750 19.050 0.500 12.700 J-98 MJ-981 B-98 M-981 SCE 98 BCE 98 BA 98 ZOH BAM 98
0.563 14.288 0.750 19.050 0.625 15.880 J-910-F MJ-910-F B-910 M-9101 SCE 910 BCE 910 BA 910 ZOH BAM 910
0.563 14.288 0.750 19.050 0.750 19.050 B-912 M-9121 SCE 912 BCE 912 BA 912 ZOH BAM 912
0.563 14.288 0.813 20.638 0.500 12.700 BH-98
0.563 14.288 0.813 20.638 0.625 15.880 BH-910
0.563 14.288 0.813 20.638 0.750 19.050 BH-912
0.625 15.875 0.813 20.638 0.312 7.920 B-105 M-1051 SCE 105 BCE 105 BA 105 ZOH BAM 105
0.625 15.875 0.813 20.638 0.438 11.130 B-107 M-1071 SCE 107 BCE 107 BA 107 ZOH BAM 107
0.625 15.875 0.813 20.638 0.500 12.700 J-108 MJ-1081 B-108 M-1081 SCE 108 BCE 108 BA 108 ZOH BAM 108
0.625 15.875 0.813 20.638 0.625 15.880 J-1010 MJ-10101 B-1010 M-10101 SCE 1010 BCE 1010 BA 1010 ZOH BAM 1010
0.625 15.875 0.813 20.638 0.750 19.050 J-1012 MJ-10121 B-1012 M-10121 SCE 1012 BCE 1012 BA 1012 ZOH BAM 1012
0.625 15.875 0.875 22.212 0.500 12.700 BH-108 MH-1081
0.625 15.875 0.875 22.212 0.625 15.880 BH-1010
0.625 15.875 0.875 22.212 0.750 19.050 BH-1012
0.625 15.875 0.875 22.212 1.000 25.400 BH-1016
0.625 15.875 0.813 20.638 0.875 22.220 BA 1014 ZOH BAM 1014
0.625 15.875 0.813 20.638 1.000 25.400 BA 1016 ZOH BAM 1016
0.688 17.463 0.875 22.225 0.375 9.525 B-116 M-1161 BA 116 ZOH BAM 116
0.688 17.463 0.875 22.225 0.500 12.700 B-118 M-1181 BA 118 ZOH BAM 118
0.688 17.463 0.875 22.225 0.625 15.880 B-1110 M-11101 SCE 1110 BCE 1110 BA 1110 ZOH BAM 1110
0.688 17.463 0.875 22.225 0.750 19.050 J-1112 MJ-11121 B-1112 M-11121 SCE 1112 BCE 1112 BA 1112 ZOH BAM 1112
0.688 17.463 0.938 23.825 0.438 11.125 BH-117
0.688 17.463 0.938 23.825 0.625 15.880 BH-1110 MH-11101
0.688 17.463 0.938 23.825 0.750 19.050 BH-1112
0.750 19.050 1.000 25.400 0.375 9.525 J-126 B-126 M-1261 SCE 126 BCE 126 BA 126 ZOH BAM 126
0.750 19.050 1.000 25.400 0.500 12.700 J-128 B-128 M-1281 SCE 128 BCE 128 BA 128 ZOH BAM 128
0.750 19.050 1.000 25.400 0.625 15.880 J-1210 MJ-12101 B-1210 M-12101 SCE 1210 BCE 1210 BA 1210 ZOH BAM 1210
0.750 19.050 1.000 25.400 0.750 19.050 J-1212 MJ-12121 B-1212 M-12121 SCE 1212 BCE 1212 BA 1212 ZOH BAM 1212
0.750 19.050 1.000 25.400 0.875 22.220 BA 1214 ZOH BAM 1214
0.750 19.050 1.000 25.400 1.000 25.400 BA 1216 ZOH BAM 1216
0.813 20.638 1.063 26.988 0.375 9.520 B-136 SCE 136 BCE 136 BA 136 ZOH BAM 136
0.813 20.638 1.063 26.988 0.500 12.700 B-138 M-1381 SCE 138 BCE 138 BA 138 ZOH BAM 138
0.813 20.638 1.063 26.988 0.625 15.880 BA 1310 ZOH BAM 1310
0.813 20.638 1.063 26.988 0.750 19.050 SCE 1312 BCE 1312 BA 1312 ZOH BAM 1312
0.813 20.638 1.063 26.988 0.875 22.220 J-1314 B-1314 M-13141 SCE 1314 BCE 1314 BA 1314 ZOH BAM 1314
0.813 20.638 1.063 26.988 1.000 25.400 B-1316 M-13161 BA 1316 ZOH BAM 1316
0.813 20.638 1.063 26.988 1.250 31.750 B-1320 BA 1320 ZOH BAM 1320
0.813 20.643 1.125 28.575 0.500 12.700 BH-138 MH-1381
0.813 20.638 1.125 28.575 0.625 15.880 BH-1310 MH-13101
0.813 20.638 1.125 28.575 0.750 19.050 BH-1312 MH-13121
0.875 22.225 1.125 28.575 0.375 9.520 J-146 B-146 M-1461 SCE 146 BCE 146 BA 146 ZOH BAM 146
0.875 22.225 1.125 28.575 0.500 12.700 J-148 B-148 M-1481 SCE 148 BCE 148 BA 148 ZOH BAM 148
0.875 22.225 1.125 28.575 0.750 19.050 J-1412 B-1412 M-14121 SCE 1412 BCE 1412 BA 1412ZO H BAM 1412
0.875 22.225 1.125 28.575 0.875 22.220 BA 1414 ZOH BAM 1414
0.875 22.225 1.125 28.575 1.000 25.400 J-1416 MJ-14161 B-1416 M-14161 SCE 1416 BCE 1416 BA 1416 ZOH BAM 1416
0.875 22.225 1.125 28.575 1.125 28.580 B-1418 BA 1418 ZOH BAM 1418
0.875 22.225 1.125 28.575 1.375 34.920 BA 1422 ZOH BAM 1422
0.875 22.225 1.188 30.163 0.625 15.880 BH-1410 MH-14101
0.875 22.225 1.188 30.163 0.750 19.050 BH-1412 MH-14121
0.875 22.225 1.188 30.163 1.000 25.400 BH-1416
0.937 23.812 1.187 30.162 0.500 12.700 B-158 BA 158 ZOH BAM 158
0.937 23.812 1.187 30.162 0.625 15.880 BA 1510 ZOH BAM 1510
0.937 23.812 1.187 30.162 1.000 25.400 B-1516 M-15161 SCE 1516 BCE 1516 BA 1516 ZOH BAM 1516
1.000 25.400 1.250 31.750 0.375 9.520 B-166 BA 166 ZOH BAM 166
1.000 25.400 1.250 31.750 0.438 11.112 B-167 M-1671 SCE 167 BCE 167 BA 167 ZOH BAM 167
1.000 25.400 1.250 31.750 0.500 12.700 SCE 168 BCE 168 BA 168 ZOH BAM 168
1.000 25.400 1.250 31.750 0.625 15.880 B-1610 M-16101 BA 1610 ZOH BAM 1610
1.000 25.400 1.250 31.750 0.750 19.050 J-1612 B-1612 M-16121 SCE 1612 BCE 1612 BA 1612 ZOH BAM 1612
1.000 25.400 1.250 31.750 0.875 22.220 BA 1614 ZOH BAM 1614
1.000 25.400 1.250 31.750 1.000 25.400 J-1616 MJ-16161 B-1616 M-16161 SCE 1616 BCE 1616 BA 1616 ZOH BAM 1616
1.000 25.400 1.313 33.338 0.500 12.700 BH-168 MH-1681
1.000 25.400 1.313 33.338 0.625 15.880 BH-1610
1.000 25.400 1.313 33.338 0.750 19.050 BH-1612 MH-16121
1.000 25.400 1.313 33.338 0.875 22.225 BH-1614
1.000 25.400 1.313 33.338 1.000 25.400 BH-1616 MH-16161
1.000 25.400 1.313 33.338 1.250 31.750 BH-1620
1.000 25.400 1.313 33.338 1.500 38.100 BH-1624 MH-16241
1.000 25.400 1.250 31.750 1.250 31.750 BA 1620 ZOH BAM 1620
1.063 26.988 1.313 33.338 0.625 15.880 B-1710 M-17101 BA 1710 ZOH BAM 1710
1.063 26.988 1.375 34.925 0.750 19.050 BH-1712
1.063 26.988 1.313 33.338 1.000 25.400 BA 1716 ZOH BAM 1716
1.125 28.575 1.375 34.925 0.375 9.520 B-186 M-1861 SCE 186 BCE 186 BA 186 ZOH BAM 186
1.125 28.575 1.375 34.925 0.500 12.700 J-188 MJ-1881 B-188 M-1881 SCE 188 BCE 188 BA 188 ZOH BAM 188
1.125 28.575 1.375 34.925 0.625 15.880 B-1810
1.125 28.575 1.375 34.925 0.750 19.050 J-1812 MJ-18121 B-1812 M-18121 SCE 1812 BCE 1812 BA 1812 ZOH BAM 1812
1.125 28.575 1.375 34.925 1.000 25.400 J-1816 MJ-18161 B-1816 M-18161 SCE 1816 BCE 1816 BA 1816 ZOH BAM 1816
1.125 28.575 1.500 38.100 0.750 19.050 BH-1812 MH-18121
1.125 28.575 1.500 38.100 1.000 25.400 BH-1816 MH-18161
1.125 28.575 1.500 38.100 1.250 31.750 BH-1820 MH-18201
1.125 28.575 1.375 34.925 1.250 31.750 BA 1820 ZOH BAM 1820
1.187 30.162 1.500 38.100 0.625 15.880 B-1910 M-19101 BA 1910 ZOH BAM 1910
1.187 30.162 1.500 38.100 1.000 25.400 B-1916 SCE 1916 BCE 1916 BA 1916 ZOH BAM 1916
1.250 31.750 1.500 38.100 0.500 12.700 B-208 M-2081 SCE 208 BCE 208 BA 208 ZOH BAM 208
***This chart is intended as a reference only. The users should consult with the listed manufacturers’ catalogs to establish dimensional interchangeability. NPB cannot be held responsible for any errors contained herein.