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
R0ZZEEShields3/64"︱1.191mm5/32"︱3.969mm3/32"︱2.381mm1/8"︱3.175mm0.670.15
R1EEopen1/18"︱1.411mm3/16"︱4.762mm0.0781"︱1.984mm0.1094"︱2.779mm160.15
R1ZZEEShields1/18"︱1.411mm3/16"︱4.762mm0.1094"︱2.779mm0.1406"︱3.571mm160.19
R1-4EEopen5/64"︱1.984mm1/4"︱6.35mm3/32"︱2.381mm1/8"︱3.175mm170.4
R1-4ZZEEShields5/64"︱1.984mm1/4"︱6.35mm0.1406"︱3.571mm0.1719"︱4.366mm170.53
R1-4 2RSEERubber seal5/64"︱1.984mm1/4"︱6.35mm0.1406"︱3.571mm0.1719"︱4.366mm170.53
R1-5EEopen3/32"︱2.381mm5/16"︱7.938mm0.1094"︱2.779mm0.1406"︱3.571mm1.58860.6
R1-5ZZEEShields3/32"︱2.381mm5/16"︱7.938mm0.1406"︱3.571mm0.1719" | 4.366 mm1.58861.15
R1-5 2RSEERubber seal3/32"︱2.381mm5/16"︱7.938mm0.1406"︱3.571mm0.1719"|4.366 mm1.58861.15
R133EEopen3/32"︱2.381mm3/16"︱4.762mm0.0625"︱1.588mm0.0937"︱2.38mm0.870.1
R133ZZEEShields3/32"︱2.381mm3/16"︱4.762mm3/32"︱2.381mm1/8"︱3.175mm0.870.15
R133-2RSEERubber seal3/32"︱2.381mm3/16"︱4.762mm3/32"︱2.381mm1/8"︱3.175mm0.870.15
R144EEopen1/8"︱3.175mm1/4"︱6.35mm3/32"︱2.381mm1/8"︱3.175mm170.27
R144ZZEEShields1/8"︱3.175mm1/4"︱6.35mm0.1094"︱2.779mm0.1406"︱3.571mm170.4
R144-2RSEERubber seal1/8"︱3.175mm1/4"︱6.35mm0.1094"︱2.779mm0.1406"︱3.571mm170.4
R2EEopen1/8"︱3.175mm3/8"︱9.525mm5/32"︱3.969mm3/16"︱4.762mm1.58871.04
R2ZZEEShields1/8"︱3.175mm3/8"︱9.525mm5/32"︱3.969mm3/16"︱4.762mm1.58871.37
R2-2RSEERubber seal1/8"︱3.175mm3/8"︱9.525mm5/32"︱3.969mm3/16"︱4.762mm1.58871.37
R2-5EEopen1/8"︱3.175mm5/16"︱7.938mm0.1094"︱2.779mm0.1406"︱3.571mm1.58860.5
R2-5ZZEEShields1/8"︱3.175mm5/16"︱7.938mm0.1406"︱3.571mm0.1719" | 4.366 mm1.58860.74
R2-5-2RSEERubber seal1/8"︱3.175mm5/16"︱7.938mm0.1406"︱3.571mm0.1719" | 4.366 mm1.58860.74
R2-6EEopen1/8"︱3.175mm3/8"︱9.525mm0.1094"︱2.779mm0.1406"︱3.571mm1.58870.96
R2-6ZZEEShields1/8"︱3.175mm3/8"︱9.525mm0.1406"︱3.571mm0.1719" | 4.366 mm1.58871.23
R2-6-2RSEERubber seal1/8"︱3.175mm3/8"︱9.525mm0.1406"︱3.571mm0.1719" | 4.366 mm1.58871.23
R155EEopen5/32"︱3.969mm5/16"︱7.938mm0.1094"︱2.779mm0.1406"︱3.571mm1100.51
R155ZZEEShields5/32"︱3.969mm5/16"︱7.938mm1/8"︱3.175mm5/32"︱3.969mm1100.61
R155-2RSEERubber seal5/32"︱3.969mm5/16"︱7.938mm1/8"︱3.175mm5/32"︱3.969mm1100.61
R156EEopen3/16"︱4.762mm5/16"︱7.938mm0.1094"︱2.779mm0.1406"︱3.571mm1100.4
R156ZZEEShields3/16"︱4.762mm5/16"︱7.938mm1/8"︱3.175mm5/32"︱3.969mm110
R156-2RSEERubber seal3/16"︱4.762mm5/16"︱7.938mm1/8"︱3.175mm5/32"︱3.969mm110
R166EEopen3/16"︱4.762mm3/8"︱9.525mm1/8"︱3.175mm5/32"︱3.969mm1.58880.81
R166ZZEEShields3/16"︱4.762mm3/8"︱9.525mm1/8"︱3.175mm5/32"︱3.969mm1.58880.85
R166-2RSEERubber seal3/16"︱4.762mm3/8"︱9.525mm1/8"︱3.175mm5/32"︱3.969mm1.58880.85
R3EEopen3/16"︱4.762mm1/2"︱12.7mm5/32"︱3.969mm3/16"︱4.762mm2.38172.21
R3ZZEEShields3/16"︱4.762mm1/2"︱12.7mm0.1960"︱4.978mm0.2273"︱5.773mm2.3817
R3-2RSEERubber seal3/16"︱4.762mm1/2"︱12.7mm0.1960"︱4.978mm0.2273"︱5.773mm2.3817
R168EEopen1/4"︱6.35mm3/8"︱9.525mm1/8"︱3.175mm5/32"︱3.969mm1110.57
R168ZZEEShields1/4"︱6.35mm3/8"︱9.525mm1/8"︱3.175mm5/32"︱3.969mm1110.6
R168-2RSEERubber seal1/4"︱6.35mm3/8"︱9.525mm1/8"︱3.175mm5/32"︱3.969mm1110.6
R188EEopen1/4"︱6.35mm1/2"︱12.7mm1/8"︱3.175mm5/32"︱3.969mm281.6
R188ZZEEShields1/4"︱6.35mm1/2"︱12.7mm3/16"︱4.762mm0.2188"︱5.558mm282.32
R188-2RSEERubber seal1/4"︱6.35mm1/2"︱12.7mm3/16"︱4.762mm0.2188"︱5.558mm282.32
R4EEopen1/4"︱6.35mm5/8"︱15.875mm0.1960"︱4.978mm0.2273"︱5.773mm2.38184.46
R4ZZEEShields1/4"︱6.35mm5/8"︱15.875mm0.1960"︱4.978mm0.2273"︱5.773mm2.38184.54
R4-2RSEERubber seal1/4"︱6.35mm5/8"︱15.875mm0.1960"︱4.978mm0.2273"︱5.773mm2.38184.54
R1810EEopen5/16"︱7.938mm1/2"︱12.7mm5/32"︱3.969mm3/16"︱4.762mm1.2121.39
R1810ZZEEShields5/16"︱7.938mm1/2"︱12.7mm5/32"︱3.969mm3/16"︱4.762mm1.2121.57
R1810-2RSEERubber 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
R6ZZEEShields3/8"︱9.525mm7/8"︱22.2250.2812"︱7.142mm0.468"︱11.889mm3.97711.7
R6-2RSEERubber 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
FR166EEopen3/16"︱4.762mm3/8"︱9.525mm1/8"︱3.175mm5/32"︱3.969mm1.58880.81
FR166ZZEEShields3/16"︱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
FR168-2RSEERubber 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
FR1810EEopen5/16"︱7.938mm1/2"︱12.7mm5/32"︱3.969mm3/16"︱4.762mm1.2121.39
FR1810ZZEEShields5/16"︱7.938mm1/2"︱12.7mm5/32"︱3.969mm3/16"︱4.762mm1.2121.57
FR1810-2RSEERubber 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
FR6ZZEEShields3/8"︱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