Extended Inner Ring Ball Bearings is also called wide inner ring bearings, they mean the width of inner ring is higher than the width of outer ring, they are designed for special applications. Runstar Bearing has a full dimention of Extended Inner Ring Ball Bearings for choice, the precision tolerance is from ABEC-1 to ABEC 9 for choice, there are chrome steel(Gcr15) and stainless steel(440 or 420) for choice in Runstar, Custom-made products is accepted in Runstar. All Runstar’s Bearings are strictly controlled under ISO9001:2015.

PART NUMBERSEAL TYPEBore diameter(d)Outer diameter(D)Width(B)Width of inner ringBALL SIZE(mm)BALL QTYweight(g)
R0 EEopen3/64"︱1.191mm5/32"︱3.969mm0.0625"︱1.588mm3/32"︱2.381mm0.670.1
R0ZZ EEShields3/64"︱1.191mm5/32"︱3.969mm3/32"︱2.381mm1/8"︱3.175mm0.670.15
R1 EEopen1/18"︱1.411mm3/16"︱4.762mm0.0781"︱1.984mm0.1094"︱2.779mm160.15
R1ZZ EEShields1/18"︱1.411mm3/16"︱4.762mm0.1094"︱2.779mm0.1406"︱3.571mm160.19
R144 EEopen5/64"︱1.984mm1/4"︱6.35mm3/32"︱2.381mm1/8"︱3.175mm170.4
R1-4ZZ EEShields5/64"︱1.984mm1/4"︱6.35mm0.1406"︱3.571mm0.1719"︱4.366mm170.53
R1-4 2RS EERubber seal5/64"︱1.984mm1/4"︱6.35mm0.1406"︱3.571mm0.1719"︱4.366mm170.53
R1-5 EEopen3/32"︱2.381mm5/16"︱7.938mm0.1094"︱2.779mm0.1406"︱3.571mm1.58860.6
R1-5ZZ EEShields3/32"︱2.381mm5/16"︱7.938mm0.1406"︱3.571mm0.1719" | 4.366 mm1.58861.15
R1-5 2RS EERubber seal3/32"︱2.381mm5/16"︱7.938mm0.1406"︱3.571mm0.1719"|4.366 mm1.58861.15
R133 EEopen3/32"︱2.381mm3/16"︱4.762mm0.0625"︱1.588mm0.0937"︱2.38mm0.870.1
R133ZZ EEShields3/32"︱2.381mm3/16"︱4.762mm3/32"︱2.381mm1/8"︱3.175mm0.870.15
R133-2RS EERubber seal3/32"︱2.381mm3/16"︱4.762mm3/32"︱2.381mm1/8"︱3.175mm0.870.15
R144 EEopen1/8"︱3.175mm1/4"︱6.35mm3/32"︱2.381mm1/8"︱3.175mm170.27
R144ZZ EEShields1/8"︱3.175mm1/4"︱6.35mm0.1094"︱2.779mm0.1406"︱3.571mm170.4
R144-2RS EERubber seal1/8"︱3.175mm1/4"︱6.35mm0.1094"︱2.779mm0.1406"︱3.571mm170.4
R2 EEopen1/8"︱3.175mm3/8"︱9.525mm5/32"︱3.969mm3/16"︱4.762mm1.58871.04
R2ZZ EEShields1/8"︱3.175mm3/8"︱9.525mm5/32"︱3.969mm3/16"︱4.762mm1.58871.37
R2-2RS EERubber seal1/8"︱3.175mm3/8"︱9.525mm5/32"︱3.969mm3/16"︱4.762mm1.58871.37
R2-5 EEopen1/8"︱3.175mm5/16"︱7.938mm0.1094"︱2.779mm0.1406"︱3.571mm1.58860.5
R2-5ZZ EEShields1/8"︱3.175mm5/16"︱7.938mm0.1406"︱3.571mm0.1719" | 4.366 mm1.58860.74
R2-5-2RS EERubber seal1/8"︱3.175mm5/16"︱7.938mm0.1406"︱3.571mm0.1719" | 4.366 mm1.58860.74
R2-6 EEopen1/8"︱3.175mm3/8"︱9.525mm0.1094"︱2.779mm0.1406"︱3.571mm1.58870.96
R2-6ZZ EEShields1/8"︱3.175mm3/8"︱9.525mm0.1406"︱3.571mm0.1719" | 4.366 mm1.58871.23
R2-6-2RS EERubber seal1/8"︱3.175mm3/8"︱9.525mm0.1406"︱3.571mm0.1719" | 4.366 mm1.58871.23
R155 EEopen5/32"︱3.969mm5/16"︱7.938mm0.1094"︱2.779mm0.1406"︱3.571mm1100.51
R155ZZ EEShields5/32"︱3.969mm5/16"︱7.938mm1/8"︱3.175mm5/32"︱3.969mm1100.61
R155-2RS EERubber seal5/32"︱3.969mm5/16"︱7.938mm1/8"︱3.175mm5/32"︱3.969mm1100.61
R156 EEopen3/16"︱4.762mm5/16"︱7.938mm0.1094"︱2.779mm0.1406"︱3.571mm1100.4
R156ZZ EEShields3/16"︱4.762mm5/16"︱7.938mm1/8"︱3.175mm5/32"︱3.969mm110
R156-2RS EERubber seal3/16"︱4.762mm5/16"︱7.938mm1/8"︱3.175mm5/32"︱3.969mm110
R166 EEopen3/16"︱4.762mm3/8"︱9.525mm1/8"︱3.175mm5/32"︱3.969mm1.58880.81
R166ZZ EEShields3/16"︱4.762mm3/8"︱9.525mm1/8"︱3.175mm5/32"︱3.969mm1.58880.85
R166-2RS EERubber seal3/16"︱4.762mm3/8"︱9.525mm1/8"︱3.175mm5/32"︱3.969mm1.58880.85
R3 EEopen3/16"︱4.762mm1/2"︱12.7mm5/32"︱3.969mm3/16"︱4.762mm2.38172.21
R3ZZ EEShields3/16"︱4.762mm1/2"︱12.7mm0.1960"︱4.978mm0.2273"︱5.773mm2.3817
R3-2RS EERubber seal3/16"︱4.762mm1/2"︱12.7mm0.1960"︱4.978mm0.2273"︱5.773mm2.3817
R168 EEopen1/4"︱6.35mm3/8"︱9.525mm1/8"︱3.175mm5/32"︱3.969mm1110.57
R168ZZ EEShields1/4"︱6.35mm3/8"︱9.525mm1/8"︱3.175mm5/32"︱3.969mm1110.6
R168-2RS EERubber seal1/4"︱6.35mm3/8"︱9.525mm1/8"︱3.175mm5/32"︱3.969mm1110.6
R188 EEopen1/4"︱6.35mm1/2"︱12.7mm1/8"︱3.175mm5/32"︱3.969mm281.6
R188ZZ EEShields1/4"︱6.35mm1/2"︱12.7mm3/16"︱4.762mm0.2188"︱5.558mm282.32
R188-2RS EERubber seal1/4"︱6.35mm1/2"︱12.7mm3/16"︱4.762mm0.2188"︱5.558mm282.32
R4 EEopen1/4"︱6.35mm5/8"︱15.875mm0.1960"︱4.978mm0.2273"︱5.773mm2.38184.46
R4ZZ EEShields1/4"︱6.35mm5/8"︱15.875mm0.1960"︱4.978mm0.2273"︱5.773mm2.38184.54
R4-2RS EERubber seal1/4"︱6.35mm5/8"︱15.875mm0.1960"︱4.978mm0.2273"︱5.773mm2.38184.54
R1810 EEopen5/16"︱7.938mm1/2"︱12.7mm5/32"︱3.969mm3/16"︱4.762mm1.2121.39
R1810ZZ EEShields5/16"︱7.938mm1/2"︱12.7mm5/32"︱3.969mm3/16"︱4.762mm1.2121.57
R1810-2RS EERubber seal5/16"︱7.938mm1/2"︱12.7mm5/32"︱3.969mm3/16"︱4.762mm1.2121.57
R6EEopen3/8"︱9.525mm7/8"︱22.2250.2188"︱5.558mm3.9779.02
R6ZZ EEShields3/8"︱9.525mm7/8"︱22.2250.2812"︱7.142mm0.468"︱11.889mm3.97711.7
R6-2RS EERubber seal3/8"︱9.525mm7/8"︱22.2250.2812"︱7.142mm0.468"︱11.889mm3.97711.7

Flange Extended Inner Ring Ball Bearings is also called Flange Wide inner ring bearings, they mean the width of inner ring is higher than the width of outer ring, and they are designed for special applications. Runstar Bearing has a full dimention of Stainless steel Flange Extended Inner Ring Ball Bearings for choice, the precision tolerance is from ABEC-1 to ABEC 9 for choice, t there are chrome steel(Gcr15) and stainless steel(440 or 420) for choice in Runstar, Custom-made products is accepted in Runstar. All Runstar’s Bearings are strictly controlled under ISO9001:2015.

PART NUMBERSEAL TYPEBore diameter(d)Outer diameter(D)Width(B)Width of inner ringBALL SIZE(mm)BALL QTYweight(g)
FR0 EEopen3/64"︱1.191mm5/32"︱3.969mm0.0625"︱1.588mm3/32"︱2.381mm0.670.1
FR0ZZEEShields3/64"︱1.191mm5/32"︱3.969mm3/32"︱2.381mm1/8"︱3.175mm0.670.15
FR1EEopen1/18"︱1.411mm3/16"︱4.762mm0.0781"︱1.984mm0.1094"︱2.779mm160.15
FR1ZZEEShields1/18"︱1.411mm3/16"︱4.762mm0.1094"︱2.779mm0.1406"︱3.571mm160.19
FR1-4EEopen5/64"︱1.984mm1/4"︱6.35mm3/32"︱2.381mm1/8"︱3.175mm170.4
FR1-4ZZEEShields5/64"︱1.984mm1/4"︱6.35mm0.1406"︱3.571mm0.1719"︱4.366mm170.53
FR1-4 2RSEERubber seal5/64"︱1.984mm1/4"︱6.35mm0.1406"︱3.571mm0.1719"︱4.366mm170.53
FR1-5EEopen3/32"︱2.381mm5/16"︱7.938mm0.1094"︱2.779mm0.1406"︱3.571mm1.58860.6
FR1-5ZZEEShields3/32"︱2.381mm5/16"︱7.938mm0.1406"︱3.571mm0.1719" | 4.366 mm1.58861.15
FR1-5 2RSEERubber seal3/32"︱2.381mm5/16"︱7.938mm0.1406"︱3.571mm0.1719"|4.366 mm1.58861.15
FR133EEopen3/32"︱2.381mm3/16"︱4.762mm0.0625"︱1.588mm0.0937"︱2.38mm0.870.1
FR133ZZEEShields3/32"︱2.381mm3/16"︱4.762mm3/32"︱2.381mm1/8"︱3.175mm0.870.15
FR133-2RSEERubber seal3/32"︱2.381mm3/16"︱4.762mm3/32"︱2.381mm1/8"︱3.175mm0.870.15
FR144EEopen1/8"︱3.175mm1/4"︱6.35mm3/32"︱2.381mm1/8"︱3.175mm170.27
FR144ZZEEShields1/8"︱3.175mm1/4"︱6.35mm0.1094"︱2.779mm0.1406"︱3.571mm170.4
FR144-2RSEERubber seal1/8"︱3.175mm1/4"︱6.35mm0.1094"︱2.779mm0.1406"︱3.571mm170.4
FR2EEopen1/8"︱3.175mm3/8"︱9.525mm5/32"︱3.969mm3/16"︱4.762mm1.58871.04
FR2ZZEEShields1/8"︱3.175mm3/8"︱9.525mm5/32"︱3.969mm3/16"︱4.762mm1.58871.37
FR2-2RSEERubber seal1/8"︱3.175mm3/8"︱9.525mm5/32"︱3.969mm3/16"︱4.762mm1.58871.37
FR2-5EEopen1/8"︱3.175mm5/16"︱7.938mm0.1094"︱2.779mm0.1406"︱3.571mm1.58860.5
FR2-5ZZEEShields1/8"︱3.175mm5/16"︱7.938mm0.1406"︱3.571mm0.1719" | 4.366 mm1.58860.74
FR2-5-2RSEERubber seal1/8"︱3.175mm5/16"︱7.938mm0.1406"︱3.571mm0.1719" | 4.366 mm1.58860.74
FR2-6EEopen1/8"︱3.175mm3/8"︱9.525mm0.1094"︱2.779mm0.1406"︱3.571mm1.58870.96
FR2-6ZZEEShields1/8"︱3.175mm3/8"︱9.525mm0.1406"︱3.571mm0.1719" | 4.366 mm1.58871.23
FR2-6-2RSEERubber seal1/8"︱3.175mm3/8"︱9.525mm0.1406"︱3.571mm0.1719" | 4.366 mm1.58871.23
FR155EEopen5/32"︱3.969mm5/16"︱7.938mm0.1094"︱2.779mm0.1406"︱3.571mm1100.51
FR155ZZEEShields5/32"︱3.969mm5/16"︱7.938mm1/8"︱3.175mm5/32"︱3.969mm1100.61
FR155-2RSEERubber seal5/32"︱3.969mm5/16"︱7.938mm1/8"︱3.175mm5/32"︱3.969mm1100.61
FR156EEopen3/16"︱4.762mm5/16"︱7.938mm0.1094"︱2.779mm0.1406"︱3.571mm1100.4
FR156ZZEEShields3/16"︱4.762mm5/16"︱7.938mm1/8"︱3.175mm5/32"︱3.969mm110
FR156-2RSEERubber seal3/16"︱4.762mm5/16"︱7.938mm1/8"︱3.175mm5/32"︱3.969mm110
FR166 EEopen3/16"︱4.762mm3/8"︱9.525mm1/8"︱3.175mm5/32"︱3.969mm1.58880.81
FR166ZZ EEShields3/16"︱4.762mm3/8"︱9.525mm1/8"︱3.175mm5/32"︱3.969mm1.58880.85
FR166-2RSEERubber seal3/16"︱4.762mm3/8"︱9.525mm1/8"︱3.175mm5/32"︱3.969mm1.58880.85
FR3EEopen3/16"︱4.762mm1/2"︱12.7mm5/32"︱3.969mm3/16"︱4.762mm2.38172.21
FR3ZZEEShields3/16"︱4.762mm1/2"︱12.7mm0.1960"︱4.978mm0.2273"︱5.773mm2.3817
FR3-2RSEERubber seal3/16"︱4.762mm1/2"︱12.7mm0.1960"︱4.978mm0.2273"︱5.773mm2.3817
FR168EEopen1/4"︱6.35mm3/8"︱9.525mm1/8"︱3.175mm5/32"︱3.969mm1110.57
FR168ZZEEShields1/4"︱6.35mm3/8"︱9.525mm1/8"︱3.175mm5/32"︱3.969mm1110.6
FR168-2RS EERubber seal1/4"︱6.35mm3/8"︱9.525mm1/8"︱3.175mm5/32"︱3.969mm1110.6
FR188EEopen1/4"︱6.35mm1/2"︱12.7mm1/8"︱3.175mm5/32"︱3.969mm281.6
FR188ZZEEShields1/4"︱6.35mm1/2"︱12.7mm3/16"︱4.762mm0.2188"︱5.558mm282.32
FR188-2RSEERubber seal1/4"︱6.35mm1/2"︱12.7mm3/16"︱4.762mm0.2188"︱5.558mm282.32
FR4EEopen1/4"︱6.35mm5/8"︱15.875mm0.1960"︱4.978mm0.2273"︱5.773mm2.38184.46
FR4ZZEEShields1/4"︱6.35mm5/8"︱15.875mm0.1960"︱4.978mm0.2273"︱5.773mm2.38184.54
FR4-2RSEERubber seal1/4"︱6.35mm5/8"︱15.875mm0.1960"︱4.978mm0.2273"︱5.773mm2.38184.54
FR1810 EEopen5/16"︱7.938mm1/2"︱12.7mm5/32"︱3.969mm3/16"︱4.762mm1.2121.39
FR1810ZZ EEShields5/16"︱7.938mm1/2"︱12.7mm5/32"︱3.969mm3/16"︱4.762mm1.2121.57
FR1810-2RS EERubber seal5/16"︱7.938mm1/2"︱12.7mm5/32"︱3.969mm3/16"︱4.762mm1.2121.57
FR6EEopen3/8"︱9.525mm7/8"︱22.2250.2188"︱5.558mm3.9779.02
FR6ZZ EEShields3/8"︱9.525mm7/8"︱22.2250.2812"︱7.142mm0.468"︱11.889mm3.97711.7
FR6-2RSEERubber seal3/8"︱9.525mm7/8"︱22.2250.2812"︱7.142mm0.468"︱11.889mm3.97711.7