Ka-AR0 Series Thin Section Bearing

KA series Interchange (inch/mm)Dimension Basic Cap.N Weight
NTN KAYDON d D L1 L2 L3 Radial Axial
Type Cor Cr Coa Ca Kg
KA020AR0 KYA020 KA020AR0 2 2.5 2.186 2.314 2.369 3510 1470 10140 4270 0.045
50.8 63.5 55.5 58.8 60.2
KA025AR0 KYA025 KA025AR0 2.5 3 2.686 2.814 2.869 4270 1690 12360 4890 0.054
63.5 76.2 68.2 71.5 72.9
KA030AR0 KYA030 KA030AR0 3 3.5 3.186 3.314 3.367 5070 1910 14620 5470 0.064
76.2 88.9 80.9 84.2 85.6
KA035AR0 KYA035 KA035AR0 3.5 4 3.386 3.814 3.867 5830 2090 16850 6000 0.077
88.9 101.6 93.6 96.9 98.2
KA040AR0 KYA040 KA040AR0 4 4.5 4.186 4.314 4.367 6630 2270 19110 6530 0.086
101.6 114.3 106.3 109.6 110.9
KA042AR0 KYA042 KA042AR0 4.25 4.75 4.436 4.564 4.615 7020 2360 20230 6800 0.091
107.95 120.65 112.7 115.9 117.2
KA045AR0 KYA045 KA045AR0 4.5 5 4.686 4.814 4.865 7380 2450 21380 7020 0.095
114.3 127 119 122.3 123.6
KA047AR0 KYA047 KA047AR0 4.75 5.25 4.936 5.064 5.115 7780 2530 22490 7290 0.1
120.65 133.35 125.4 128.6 129.9
KA050AR0 KYA050 KA050AR0 5 5.5 5.186 5.314 5.365 8180 2620 23600 7510 0.104
127 139.7 131.7 135 136.3


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.