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
SR0ZZEEShields3/64"︱1.191mm5/32"︱3.969mm3/32"︱2.381mm0.670.15
SR1EEopen1/18"︱1.411mm3/16"︱4.762mm0.0781"︱1.984mm160.15
SR1ZZEEShields1/18"︱1.411mm3/16"︱4.762mm0.1094"︱2.779mm160.19
SR1-4EEopen5/64"︱1.984mm1/4"︱6.35mm3/32"︱2.381mm170.4
SR1-4ZZEEShields5/64"︱1.984mm1/4"︱6.35mm0.1406"︱3.571mm170.53
SR1-4 2RSEERubber seal5/64"︱1.984mm1/4"︱6.35mm0.1406"︱3.571mm170.53
SR1-5EEopen3/32"︱2.381mm5/16"︱7.938mm0.1094"︱2.779mm1.58860.6
SR1-5ZZEEShields3/32"︱2.381mm5/16"︱7.938mm0.1406"︱3.571mm1.58861.15
SR1-5 2RSEERubber seal3/32"︱2.381mm5/16"︱7.938mm0.1406"︱3.571mm1.58861.15
SR133EEopen3/32"︱2.381mm3/16"︱4.762mm0.0625"︱1.588mm0.870.1
SR133ZZEEShields3/32"︱2.381mm3/16"︱4.762mm3/32"︱2.381mm0.870.15
SR133-2RSEERubber seal3/32"︱2.381mm3/16"︱4.762mm3/32"︱2.381mm0.870.15
SR144EEopen1/8"︱3.175mm1/4"︱6.35mm3/32"︱2.381mm170.27
SR144ZZEEShields1/8"︱3.175mm1/4"︱6.35mm0.1094"︱2.779mm170.4
SR144-2RSEERubber seal1/8"︱3.175mm1/4"︱6.35mm0.1094"︱2.779mm170.4
SR2EEopen1/8"︱3.175mm3/8"︱9.525mm5/32"︱3.969mm1.58871.04
SR2ZZEEShields1/8"︱3.175mm3/8"︱9.525mm5/32"︱3.969mm1.58871.37
SR2-2RSEERubber seal1/8"︱3.175mm3/8"︱9.525mm5/32"︱3.969mm1.58871.37
SR2-5EEopen1/8"︱3.175mm5/16"︱7.938mm0.1094"︱2.779mm1.58860.5
SR2-5ZZEEShields1/8"︱3.175mm5/16"︱7.938mm0.1406"︱3.571mm1.58860.74
SR2-5-2RSEERubber seal1/8"︱3.175mm5/16"︱7.938mm0.1406"︱3.571mm1.58860.74
SR2-6EEopen1/8"︱3.175mm3/8"︱9.525mm0.1094"︱2.779mm1.58870.96
SR2-6ZZEEShields1/8"︱3.175mm3/8"︱9.525mm0.1406"︱3.571mm1.58871.23
SR2-6-2RSEERubber seal1/8"︱3.175mm3/8"︱9.525mm0.1406"︱3.571mm1.58871.23
SR155EEopen5/32"︱3.969mm5/16"︱7.938mm0.1094"︱2.779mm1100.51
SR155ZZEEShields5/32"︱3.969mm5/16"︱7.938mm1/8"︱3.175mm1100.61
SR155-2RSEERubber seal5/32"︱3.969mm5/16"︱7.938mm1/8"︱3.175mm1100.61
SR156EEopen3/16"︱4.762mm5/16"︱7.938mm0.1094"︱2.779mm1100.4
SR156ZZEEShields3/16"︱4.762mm5/16"︱7.938mm1/8"︱3.175mm110
SR156-2RSEERubber seal3/16"︱4.762mm5/16"︱7.938mm1/8"︱3.175mm110
SR166EEopen3/16"︱4.762mm3/8"︱9.525mm1/8"︱3.175mm1.58880.81
SR166ZZEEShields3/16"︱4.762mm3/8"︱9.525mm1/8"︱3.175mm1.58880.85
SR166-2RSEERubber seal3/16"︱4.762mm3/8"︱9.525mm1/8"︱3.175mm1.58880.85
SR3EEopen3/16"︱4.762mm1/2"︱12.7mm5/32"︱3.969mm2.38172.21
SR3ZZEEShields3/16"︱4.762mm1/2"︱12.7mm0.1960"︱4.978mm2.3817
SR3-2RSEERubber seal3/16"︱4.762mm1/2"︱12.7mm0.1960"︱4.978mm2.3817
SR168EEopen1/4"︱6.35mm3/8"︱9.525mm1/8"︱3.175mm1110.57
SR168ZZEEShields1/4"︱6.35mm3/8"︱9.525mm1/8"︱3.175mm1110.6
SR168-2RSEERubber seal1/4"︱6.35mm3/8"︱9.525mm1/8"︱3.175mm1110.6
SR188EEopen1/4"︱6.35mm1/2"︱12.7mm1/8"︱3.175mm281.6
SR188ZZEEShields1/4"︱6.35mm1/2"︱12.7mm3/16"︱4.762mm282.32
SR188-2RSEERubber seal1/4"︱6.35mm1/2"︱12.7mm3/16"︱4.762mm282.32
SR4EEopen1/4"︱6.35mm5/8"︱15.875mm0.1960"︱4.978mm2.38184.46
SR4ZZEEShields1/4"︱6.35mm5/8"︱15.875mm0.1960"︱4.978mm2.38184.54
SR4-2RSEERubber seal1/4"︱6.35mm5/8"︱15.875mm0.1960"︱4.978mm2.38184.54
SR1810EEopen5/16"︱7.938mm1/2"︱12.7mm5/32"︱3.969mm1.2121.39
SR1810ZZEEShields5/16"︱7.938mm1/2"︱12.7mm5/32"︱3.969mm1.2121.57
SR1810-2RSEERubber seal5/16"︱7.938mm1/2"︱12.7mm5/32"︱3.969mm1.2121.57
SR6EEopen3/8"︱9.525mm7/8"︱22.2250.2188"︱5.558mm3.9779.02
SR6ZZEEShields3/8"︱9.525mm7/8"︱22.2250.2812"︱7.142mm3.97711.7
SR6-2RSEERubber seal3/8"︱9.525mm7/8"︱22.2250.2812"︱7.142mm3.97711.7