KB-AR0 Series Thin Section Bearing

KB series Interchange （inch/mm） Dimension Basic Cap.N Weight
NTN KAYDON d D L1 L2 L3 Radial AXial
Type Cor Cr Coa Ca Kg
KB020AR0 KYB020 KB020AR0 2 2.625 2.231 2.393 2.464 4850 2130 14000 6130 0.068
50.8 66.675 56.7 60.8 62.6
KB025AR0 KYB025 KB025AR0 2.5 3.125 2.731 2.893 2.964 5960 2450 17160 7070 0.086
63.5 79.375 69.4 73.5 75.3
KB030AR0 KYB030 KB030AR0 3 3.625 3.231 3.393 3.462 6890 2710 19870 7780 0.1
76.2 92.075 82.1 86.2 87.9
KB035AR0 KYB035 KB035AR0 3.5 4.125 3.731 3.893 3.962 7960 2980 23030 8580 0.122
88.9 104.775 94.8 98.9 100.6
KB040AR0 KYB040 KB040AR0 4 4.625 4.432 4.393 4.46 9070 3250 26180 9340 0.136
101.6 117.475 107.5 111.6 113.3
KB042AR0 KYB042 KB042AR0 4.2 4.875 4.481 4.643 4.71 9560 3330 27560 9650 0.141
107.95 123.825 113.8 117.9 119.6
KB045AR0 KYB045 KB045AR0 4.5 5.125 4.731 4.893 4.96 10000 3470 28890 9960 0.154
114.3 130.175 120.2 124.3 126
KB047AR0 KYB047 KB047AR0 4.75 5.375 4.981 5.143 5.21 10620 3600 30720 10400 0.159
120.65 136.525 126.6 130.6 132.2
KB050AR0 KYB050 KB050AR0 5 5.625 5.231 5.393 5.46 11110 3690 32050 10710 0.168
127 142.875 132.9 137 138.7
KB055AR0 KYB055 KB055AR0 5.5 6.125 5.731 5.893 5.958 12180 3960 35200 11380 0.181
139.7 155.575 145.6 149.7 151.3
KB060AR0 KYB060 KB060AR0 6 6.625 6.231 6.393 6.458 13290 4180 38360 12050 0.2
152.4 168.275 158.3 162.4 164
KB065AR0 KYB065 KB065AR0 6.5 7.125 6.731 6.893 6.958 14220 4360 41070 12620 0.213
165.1 180.975 171 175.1 176.7
KB070AR0 KYB070 KB070AR0 7 7.625 7.231 7.393 7.456 15340 4580 44270 13250 0.227
177.8 193.675 183.7 187.8 189.4
KB075AR0 KYB075 KB075AR0 7.5 8.125 7.731 7.893 7.955 16450 4800 27230 13870 0.245
190.5 206.375 196.4 200.5 202.1
KB080AR0 KYB080 KB080AR0 8 8.625 8.231 8.393 8.453 17510 5020 50580 14490 0.259
203.2 219.075 209.1 213.2 214.7
KB090AR0 KYB090 KB090AR0 9 9.625 9.231 9.393 9.451 19560 5420 56450 15600 0.29
228.6 244.475 234.5 238.6 240
KB100AR0 KYB100 KB100AR0 10 10.625 10.231 10.393 10.449 21740 5780 62760 16710 0.322
254 269.875 259.9 264 265.4
KB110AR0 KYB110 KB110AR0 11 11.625 11.231 11.393 11.447 23780 6130 68630 17780 0.354
279.4 295.275 285.3 289.4 290.8
KB120AR0 KYB120 KB120AR0 12 12.625 12.231 12.393 12.445 25960 6530 74940 18850 0.386
304.8 320.675 310.7 314.8 316.1
KB140AR0 KYB140 KB140AR0 14 14.625 14.231 14.393 14.439 30050 7200 86680 20760 0.445
355.6 371.475 361.5 365.6 366.8
KB160AR0 KYB160 KB160AR0 16 16.625 16.231 16.393 16.433 34270 7870 98900 22670 0.509
406.4 422.275 412.3 416.4 417.4
KB180AR0 KYB180 KB180AR0 18 18.625 18.231 18.393 18.425 38490 8490 111080 24490 0.572
457.2 473.075 463.1 467.2 468
KB200AR0 KYB200 KB200AR0 20 20.625 20.231 20.393 20.416 42720 9110 123260 26230 0.635
508 523.875 513.9 518 518.6


First understand the thin-walled bearings of equal section: thin-walled ferrule bearings have high precision, very quiet and strong carrying capacity. These ball bearings are available in three designs and are extremely small and mostly square in cross section. In these series, even with larger shaft diameters and bearing bores, the cross section remains the same. These bearings are therefore referred to as equal sections.
The equal-section thin-wall ball bearing retainer is a precision non-standard thin-walled ball bearing retainer consisting of seven open series and five sealed series, with inner diameters ranging from 1 inch to 40 inches, and cross-section sizes ranging from 0.1875X to 0.1875 inches. To 1.000X 1.000 inches.
Three types: deep groove ball type (C), angular contact type (E), four point contact type (X).
Materials are copper, stainless steel, alloy steel, etc.
The products are mainly used in: robot joint bearings, aerospace high-precision thin-wall bearings and large-scale bearings for wind turbines, etc., which require high-precision and small space.