Miniature deep groove ball bearings

Inch series


Small deep groove ball bearings are composed of two rings containing a single row of balls. They have deep raceway grooves and the cage keeps the balls separated.

In the case of  miniature bearings the bore diameters range from 1 mm to 9 mm. They are available in 100Cr6 grade steel or alternatively AISI 440 or 420 stainless steel if additional corrosion resistance is required..

Miniature bearings are available open or sealed with rubber seals “RS” or metal shields “Z”. Cages are available in sheet-steel, fiber-reinforced plastic and special phenolic material designed for high speed applications.

Miniature bearings are also available with reduced or increased raceway groove clearance from MC1 up to MC6.

Small bearing applications include miniature mechanical engineering, electronic and medical devices, miniature engines and dynamic model building, small spindles, dental drills, watches,  aerospace and all applications requiring extremely small components.

Miniature deep groove ball bearings Inch series
Diametro interno
d (inch)		 Diametro esterno
D (inch)		 Diametro flangia
Df (inch)		 Larghezza
B (inch)		 Codice Coefficiente Carico Velocità max ×1000rpm
Cr(N)
Dinamico		 Cor(N)
Statico		 grasso olio
(inch)(mm) (inch)(mm) (inch)(mm) (inch)(mm)
0.0551.397 0.18754.7625 -- 0.07811.98374 R1 232 67 90 110
0.0551.397 0.18754.7625 0.2345.9436 0.07811.98374 FR1 232 67 90 110
0.0551.397 0.18754.7625 -- 0.10942.77876 R1 ZZ 232 67 90 110
0.0551.397 0.18754.7625 0.2345.9436 0.10942.77876 FR1 ZZ 232 67 90 110
0.07811.98374 0.256.35 -- 0.09372.37998 R1-4 284 96 67 80
0.07811.98374 0.256.35 0.2967.5184 0.09372.37998 FR1-4 284 96 67 80
0.07811.98374 0.256.35 -- 0.14063.57124 R1-4 ZZ 284 96 67 80
0.07811.98374 0.256.35 0.2967.5184 0.14063.57124 FR1-4 ZZ 284 96 67 80
0.09372.37998 0.18754.7625 -- 0.06251.5875 R133 189 60 80 95
0.09372.37998 0.18754.7625 0.2345.9436 0.06251.5875 FR133 189 60 80 95
0.09372.37998 0.18754.7625 -- 0.09372.37998 R133 ZZ 144 53 80 95
0.09372.37998 0.18754.7625 0.2345.9436 0.09372.37998 FR133 ZZ 144 53 80 95
0.09372.37998 0.31257.9375 -- 0.10942.77876 R1-5 552 176 60 71
0.09372.37998 0.31257.9375 0.3599.1186 0.10942.77876 FR1-5 552 176 60 71
0.09372.37998 0.31257.9375 -- 0.14063.57124 R1-5 ZZ 552 176 60 71
0.09372.37998 0.31257.9375 0.3599.1186 0.14063.57124 FR1-5 ZZ 552 176 60 71
0.1253.175 0.256.35 -- 0.09372.37998 R144 311 110 67 80
0.1253.175 0.256.35 0.2967.5184 0.09372.37998 FR144 311 110 67 80
0.1253.175 0.256.35 -- 0.10942.77876 R144 ZZ 311 110 67 80
0.1253.175 0.256.35 0.2967.5184 0.10942.77876 FR144 ZZ 311 110 67 80
0.1253.175 0.31257.9375 -- 0.10942.77876 R2-5 558 180 60 67
0.1253.175 0.31257.9375 0.3599.1186 0.10942.77876 FR2-5 558 180 60 67
0.1253.175 0.31257.9375 -- 0.14063.57124 R2-5 ZZ 558 180 60 67
0.1253.175 0.31257.9375 0.3599.1186 0.14063.57124 FR2-5 ZZ 558 180 60 67
0.1253.175 0.31257.9375 -- 0.10942.77876 R2-6 640 227 53 63
0.1253.175 0.31257.9375 0.42210.7188 0.10942.77876 FR2-6 640 227 53 63
0.1253.175 0.31257.9375 -- 0.14063.57124 R2-6 ZZ 640 227 53 63
0.1253.175 0.31257.9375 0.42210.7188 0.14063.57124 FR2-6 ZZ 640 227 53 63
0.1253.175 0.3759.525 -- 0.15623.96748 R2 631 219 56 67
0.1253.175 0.3759.525 -- 0.15623.96748 R2 ZZ 631 219 56 67
0.1253.175 0.3759.525 0.4411.176 0.15623.96748 FR2 631 219 56 67
0.1253.175 0.3759.525 0.4411.176 0.15623.96748 FR2 ZZ 631 219 56 67
0.1253.175 0.512.7 -- 0.17194.36626 R2A 640 227 53 63
0.1253.175 0.512.7 -- 0.17194.36626 R2A ZZ 640 227 53 63
0.15623.96748 0.31257.9375 -- 0.10942.77876 R155 359 150 53 63
0.15623.96748 0.31257.9375 0.3599.1186 0.10942.77876 FR155 359 150 53 63
0.15623.96748 0.31257.9375 -- 0.1253.175 R155 ZZ 359 150 53 63
0.15623.96748 0.31257.9375 0.3599.1186 0.1253.175 FR155 ZZ 359 150 53 63
0.18754.7625 0.31257.9375 -- 0.10942.77876 R156 359 150 53 63
0.18754.7625 0.31257.9375 0.3599.1186 0.10942.77876 FR156 359 150 53 63
0.18754.7625 0.31257.9375 -- 0.1253.175 R156 ZZ 359 150 53 63
0.18754.7625 0.31257.9375 0.3599.1186 0.1253.175 FR156 ZZ 359 150 53 63
0.18754.7625 0.3759.525 -- 0.1253.175 R166 709 272 50 60
0.18754.7625 0.3759.525 0.42210.7188 0.1253.175 FR166 709 272 50 60
0.18754.7625 0.3759.525 -- 0.1253.175 R166 ZZ 709 272 50 60
0.18754.7625 0.3759.525 0.42210.7188 0.1253.175 FR166 ZZ 709 272 50 60
0.18754.7625 0.512.7 -- 0.15623.96748 R3 1301 488 43 53
0.18754.7625 0.512.7 0.56514.351 0.15623.96748 FR3 1301 488 43 53
0.18754.7625 0.512.7 -- 0.1964.9784 R3 ZZ 1301 488 43 53
0.18754.7625 0.512.7 0.56514.351 0.1964.9784 FR3 ZZ 1301 488 43 53
0.18754.7625 0.62515.875 -- 0.1964.9784 R3A 1480 621 38 45
0.18754.7625 0.62515.875 -- 0.1964.9784 R3A ZZ 1480 621 38 45
0.256.35 0.3759.525 -- 0.1253.175 R168 373 172 48 56
0.256.35 0.3759.525 0.42210.7188 0.1253.175 FR168 373 172 48 56
0.256.35 0.3759.525 -- 0.1253.175 R168 ZZ 373 172 48 56
0.256.35 0.3759.525 0.42210.7188 0.1253.175 FR168 ZZ 373 172 48 56
0.256.35 0.512.7 -- 0.1253.175 R188 1082 442 40 50
0.256.35 0.512.7 0.54713.8938 0.1253.175 FR188 1082 442 40 50
0.256.35 0.512.7 -- 0.18754.7625 R188 ZZ 1082 442 40 50
0.256.35 0.512.7 0.54713.8938 0.18754.7625 FR188 ZZ 1082 442 40 50
0.256.35 0.62515.875 -- 0.1964.9784 R4 1480 621 38 45
0.256.35 0.62515.875 0.6917.526 0.1964.9784 FR4 1480 621 38 45
0.256.35 0.62515.875 -- 0.1964.9784 R4 ZZ 1480 621 38 45
0.256.35 0.62515.875 0.6917.526 0.1964.9784 FR4 ZZ 1480 621 38 45
0.256.35 0.7519.05 -- 0.21885.55752 R4A 2336 896 36 43
0.256.35 0.7519.05 -- 0.28127.14248 R4A ZZ 2336 896 36 43
0.31257.9375 0.512.7 -- 0.15623.96748 R1810 542 276 40 48
0.31257.9375 0.512.7 0.54713.8938 0.15623.96748 FR1810 542 276 40 48
0.31257.9375 0.512.7 -- 0.15623.96748 R1810 ZZ 542 276 40 48
0.31257.9375 0.512.7 0.54713.8938 0.15623.96748 FR1810 ZZ 542 276 40 48
0.3759.525 0.62515.875 -- 0.15623.96748 ER1038 856 435 30 35
0.3759.525 0.62515.875 -- 0.15623.96748 ER1038 ZZ 856 435 30 35
0.3759.525 0.87522.225 -- 0.21885.55752 R6 3332 1411 32 38
0.3759.525 0.87522.225 0.96924.6126 0.21885.55752 FR6 3332 1411 32 38
0.3759.525 0.87522.225 -- 0.25126.38048 R6 ZZ 3332 1411 32 38
0.3759.525 0.87522.225 0.96924.6126 0.25126.38048 FR6 ZZ 3332 1411 32 38
0.512.7 0.7519.05 -- 0.15623.96748 ER1212 9018 542 24 28
0.512.7 0.7519.05 -- 0.15623.96748 ER1212 ZZ 9018 542 24 28
0.512.7 1.12528.575 -- 0.256.35 R8 5108 2413 27 32
0.512.7 1.12528.575 1.225231.12008 0.256.35 FR8 5108 2413 27 32
0.512.7 1.12528.575 -- 0.31257.9375 R8 ZZ 5108 2413 27 32
0.512.7 1.12528.575 1.225231.12008 0.31257.9375 FR8 ZZ 5108 2413 27 32
0.62515.875 0.87522.225 -- 0.15623.96748 ER1458 968 619 20 24
0.62515.875 0.87522.225 -- 0.15623.96748 ER1458 ZZ 968 619 20 24
0.62515.875 1.37534.925 -- 0.28127.14248 R10 5999 3265 21 25
0.62515.875 1.37534.925 -- 0.34388.73252 R10 ZZ 5999 3265 21 25
0.62515.875 1.37534.925 1.4937.846 0.34388.73252 FR10 ZZ 5999 3265 21 25
0.7519.05 125.4 -- 0.15623.96748 ER1634 1011 691 17 20
0.7519.05 125.4 -- 0.15623.96748 ER1634 ZZ 1011 691 17 20
0.7519.05 1.62541.275 -- 0.31257.9375 R12 9384 5057 17 21
0.7519.05 1.62541.275 -- 0.437511.1125 R12 ZZ 9384 5057 17 21