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 Stainless steel Extended Inner Ring Ball Bearings for choice, the precision tolerance is from ABEC-1 to ABEC 9 for choice, there are 440(9Cr18),420(9Cr13) for choice in Runstar, 316 is sometimes available. 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)BALL SIZE(mm)BALL QTYweight(g)
SR0 EEopen3/64"︱1.191mm5/32"︱3.969mm0.0625"︱1.588mm0.670.1
SR0ZZ EEShields3/64"︱1.191mm5/32"︱3.969mm3/32"︱2.381mm0.670.15
SR1 EEopen1/18"︱1.411mm3/16"︱4.762mm0.0781"︱1.984mm160.15
SR1ZZ EEShields1/18"︱1.411mm3/16"︱4.762mm0.1094"︱2.779mm160.19
SR1-4 EEopen5/64"︱1.984mm1/4"︱6.35mm3/32"︱2.381mm170.4
SR1-4ZZ EEShields5/64"︱1.984mm1/4"︱6.35mm0.1406"︱3.571mm170.53
SR1-4 2RS EERubber seal5/64"︱1.984mm1/4"︱6.35mm0.1406"︱3.571mm170.53
SR1-5 EEopen3/32"︱2.381mm5/16"︱7.938mm0.1094"︱2.779mm1.58860.6
SR1-5ZZ EEShields3/32"︱2.381mm5/16"︱7.938mm0.1406"︱3.571mm1.58861.15
SR1-5 2RS EERubber seal3/32"︱2.381mm5/16"︱7.938mm0.1406"︱3.571mm1.58861.15
SR133 EEopen3/32"︱2.381mm3/16"︱4.762mm0.0625"︱1.588mm0.870.1
SR133ZZ EEShields3/32"︱2.381mm3/16"︱4.762mm3/32"︱2.381mm0.870.15
SR133-2RS EERubber seal3/32"︱2.381mm3/16"︱4.762mm3/32"︱2.381mm0.870.15
SR144 EEopen1/8"︱3.175mm1/4"︱6.35mm3/32"︱2.381mm170.27
SR144ZZ EEShields1/8"︱3.175mm1/4"︱6.35mm0.1094"︱2.779mm170.4
SR144-2RS EERubber seal1/8"︱3.175mm1/4"︱6.35mm0.1094"︱2.779mm170.4
SR2 EEopen1/8"︱3.175mm3/8"︱9.525mm5/32"︱3.969mm1.58871.04
SR2ZZ EEShields1/8"︱3.175mm3/8"︱9.525mm5/32"︱3.969mm1.58871.37
SR2-2RS EERubber seal1/8"︱3.175mm3/8"︱9.525mm5/32"︱3.969mm1.58871.37
SR2-5 EEopen1/8"︱3.175mm5/16"︱7.938mm0.1094"︱2.779mm1.58860.5
SR2-5ZZ EEShields1/8"︱3.175mm5/16"︱7.938mm0.1406"︱3.571mm1.58860.74
SR2-5-2RS EERubber seal1/8"︱3.175mm5/16"︱7.938mm0.1406"︱3.571mm1.58860.74
SR2-6 EEopen1/8"︱3.175mm3/8"︱9.525mm0.1094"︱2.779mm1.58870.96
SR2-6ZZ EEShields1/8"︱3.175mm3/8"︱9.525mm0.1406"︱3.571mm1.58871.23
SR2-6-2RS EERubber seal1/8"︱3.175mm3/8"︱9.525mm0.1406"︱3.571mm1.58871.23
SR155 EEopen5/32"︱3.969mm5/16"︱7.938mm0.1094"︱2.779mm1100.51
SR155ZZ EEShields5/32"︱3.969mm5/16"︱7.938mm1/8"︱3.175mm1100.61
SR155-2RS EERubber seal5/32"︱3.969mm5/16"︱7.938mm1/8"︱3.175mm1100.61
SR156 EEopen3/16"︱4.762mm5/16"︱7.938mm0.1094"︱2.779mm1100.4
SR156ZZ EEShields3/16"︱4.762mm5/16"︱7.938mm1/8"︱3.175mm110
SR156-2RS EERubber seal3/16"︱4.762mm5/16"︱7.938mm1/8"︱3.175mm110
SR166 EEopen3/16"︱4.762mm3/8"︱9.525mm1/8"︱3.175mm1.58880.81
SR166ZZ EEShields3/16"︱4.762mm3/8"︱9.525mm1/8"︱3.175mm1.58880.85
SR166-2RS EERubber seal3/16"︱4.762mm3/8"︱9.525mm1/8"︱3.175mm1.58880.85
SR3 EEopen3/16"︱4.762mm1/2"︱12.7mm5/32"︱3.969mm2.38172.21
SR3ZZ EEShields3/16"︱4.762mm1/2"︱12.7mm0.1960"︱4.978mm2.3817
SR3-2RS EERubber seal3/16"︱4.762mm1/2"︱12.7mm0.1960"︱4.978mm2.3817
SR168 EEopen1/4"︱6.35mm3/8"︱9.525mm1/8"︱3.175mm1110.57
SR168ZZ EEShields1/4"︱6.35mm3/8"︱9.525mm1/8"︱3.175mm1110.6
SR168-2RS EERubber seal1/4"︱6.35mm3/8"︱9.525mm1/8"︱3.175mm1110.6
SR188 EEopen1/4"︱6.35mm1/2"︱12.7mm1/8"︱3.175mm281.6
SR188ZZ EEShields1/4"︱6.35mm1/2"︱12.7mm3/16"︱4.762mm282.32
SR188-2RS EERubber seal1/4"︱6.35mm1/2"︱12.7mm3/16"︱4.762mm282.32
SR4 EEopen1/4"︱6.35mm5/8"︱15.875mm0.1960"︱4.978mm2.38184.46
SR4ZZ EEShields1/4"︱6.35mm5/8"︱15.875mm0.1960"︱4.978mm2.38184.54
SR4-2RS EERubber seal1/4"︱6.35mm5/8"︱15.875mm0.1960"︱4.978mm2.38184.54
SR1810 EEopen5/16"︱7.938mm1/2"︱12.7mm5/32"︱3.969mm1.2121.39
SR1810ZZ EEShields5/16"︱7.938mm1/2"︱12.7mm5/32"︱3.969mm1.2121.57
SR1810-2RS EERubber seal5/16"︱7.938mm1/2"︱12.7mm5/32"︱3.969mm1.2121.57
SR6EEopen3/8"︱9.525mm7/8"︱22.2250.2188"︱5.558mm3.9779.02
SR6ZZ EEShields3/8"︱9.525mm7/8"︱22.2250.2812"︱7.142mm3.97711.7
SR6-2RS EERubber seal3/8"︱9.525mm7/8"︱22.2250.2812"︱7.142mm3.97711.7