KF-AR0 Series Thin Section Bearing

KF series Interchange （inch/mm） Dimension Basic Cap.N Weight
NTN KAYDON d D L1 L2 L3 Radial AXial
Type Cor Cr Coa Ca Kg
KF040AR0 KYF040 KF040AR0 4 5 4.555 4.945 5.115 28230 12980 81520 37430 0.875
101.6 139.7 115.7 125.6 129.9
KF042AR0 KYF042 KF042AR0 4.25 5.75 4.805 5.195 5.365 29340 13290 84680 38360 0.93
107.95 146.05 122 132 136.3
KF045AR0 KYF045 KF045AR0 4.5 6 5.055 5.445 5.615 31520 13960 90950 40230 0.975
114.3 152.4 128.4 138.3 142.6
KF047AR0 KYF047 KF047AR0 4.75 6.25 5.305 5.695 5.865 32580 14270 94060 41160 1.04
120.65 158.75 134.7 144.7 149
KF050AR0 KYF050 KF050AR0 5 6.5 5.555 5.945 6.115 33650 14580 97210 42050 1.09
127 165.1 141.1 151 155.3
KF055AR0 KYF055 KF055AR0 5.5 7 6.055 6.445 6.613 36940 15510 106590 44720 1.18
139.7 177.8 153.8 163.7 168
KF060AR0 KYF060 KF060AR0 6 7.5 6.555 6.945 7.113 40180 16400 116020 47340 1.24
152.4 190.5 166.5 176.4 180.7
KF065AR0 KYF065 KF065AR0 6.5 8 7.055 7.445 7.613 43430 17290 125440 49870 1.35
165.1 203.2 179.2 189.1 193.4
KF070AR0 KYF070 KF070AR0 7 8.5 7.555 7.945 8.113 46720 18140 134820 52320 1.45
177.8 215.9 191.9 201.8 206.1
KF075AR0 KYF075 KF075AR0 7.5 9 8.055 8.445 8.61 48900 18670 141080 53920 1.56
190.5 228.6 204.6 214.5 218.7
KF080AR0 KYF080 KF080AR0 8 9.5 8.555 8.945 9.11 52140 19510 150510 56320 1.66
203.2 241.3 217.3 227.2 231.4
KF090AR0 KYF090 KF090AR0 9 10.5 9.555 9.945 10.108 58630 21110 169310 60900 1.81
228.6 266.7 242.7 252.6 256.7
KF100AR0 KYF100 KF100AR0 10 11.5 10.555 10.945 11.106 64100 22360 185000 64590 2.02
254 292.1 268.1 278 282.1
KF110AR0 KYF110 KF110AR0 11 12.5 11.555 11.945 12.106 70590 23870 203800 68900 2.18
279.4 317.5 293.5 303.4 307.5
KF120AR0 KYF120 KF120AR0 12 13.5 12.555 12.945 13.104 76010 25070 219490 72410 2.38
304.8 342.9 318.9 328.3 332.8
KF140AR0 KYF140 KF140AR0 14 15.5 14.555 14.945 15.102 87970 27650 253990 79790 2.72
355.6 393.7 369.7 379.6 383.6
KF160AR0 KYF160 KF160AR0 16 17.5 16.555 16.945 17.098 99920 30100 288440 86860 3.22
406.4 444.5 420.5 430.4 434.3
KF180AR0 KYF180 KF180AR0 18 19.5 18.555 18.945 19.096 112950 32670 326090 94280 3.58
457.2 495.3 471.3 481.2 485
KF200AR0 KYF200 KF200AR0 20 21.5 20.555 20.945 21.092 124910 34940 360580 100810 4.04
508 546.1 522.1 532 535.7


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.