Metric Miniature Ball Bearings are one of the classifications under ball bearings . In Runstar Bearing, they are usually referred to a ball bearing from a bore diameter of 1mm to 10mm. they are usually called as instrument bearings or micro bearings that are widely used in widely used in the fields of precision instrument,home application,medical device,massage equipment,sports equipment,textile machinery,woodworking machinery,motor,power tool,water pump,air compressor,fishing reel and Yoyo etcs. Runstar Bearing has a full metric dimention of stainless steel Metric Miniature 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)
S681open1310.660.03
S691open141.60.850.11
S681Xopen1.541.20.670.1
S681xzzShield1.5420.670.14
S691Xopen1.5520.660.2
S691XZZShield1.552.60.660.25
S601Xopen1.562.51.260.31
S601XZZShield1.5631.260.4
S682open251.50.860.15
S682zzShield252.30.860.2
S682-2RSRubber seal252.30.860.2
SMR52open2520.860.14
SMR52ZZShield252.50.860.2
SMR52-2RSRubber seal252.50.860.2
S692open262.31.260.28
S692ZZShield2631.260.35
S692-2RSRubber seal2631.260.35
SMR62open262.51.260.28
SMR62ZZShield262.51.260.33
SMR62-2RSRubber seal262.51.260.33
SMR72open272.51.270.43
SMR72ZZShield2731.270.53
SMR72-2RSRubber seal2731.270.53
S602open272.81.270.5
S602ZZShield273.51.270.6
S602-2RSRubber seal273.51.270.6
S682Xopen2.561.80.880.2
S682XZZShield2.562.60.880.35
S682X-2RSRubber seal2.562.60.880.35
S692Xopen2.572.51.270.4
S692XZZShield2.573.51.270.55
S692X-2RSRubber seal2.573.51.270.55
SMR82Xopen2.582.51.58860.52
SMR82XZZShield2.582.51.58860.52
SMR82X-2RSRubber seal2.582.51.58860.52
S602Xopen2.582.81.58860.61
S602XZZShield2.5841.58860.85
S602X-2RSRubber seal2.5841.58860.85
SMR63open3620.880.2
SMR63ZZShield362.50.880.28
SMR63-2RSRubber seal362.50.880.28
S683open372180.32
S683ZZShield373180.45
S683-2RSRubber seal373180.45
SMR83open382.51.270.51
SMR83ZZShield3831.270.67
SMR83-2RSRubber seal3831.270.67
S693open3831.270.6
s693ZZShield3841.270.8
s693-2RSRubber seal3841.270.8
sMR93open392.51.58860.75
sMR93ZZShield3941.58861.15
sMR93-2RSRubber seal3941.58861.15
s603open3931.58860.84
s603ZZShield3951.58861.13
s603-2RSRubber seal3951.58861.13
s623open31041.58871.45
s623ZZShield31041.58871.65
s623-2RSRubber seal31041.58871.65
s633open31352.38173.27
s633ZZShield31352.38173.43
s633-2RSRubber seal31352.38173.43
SMR74open472180.23
SMR74ZZShield472.5180.33
SMR74-2RSRubber seal472.5180.33
SMR84open4821.270.39
SMR84ZZShield4831.270.56
SMR84-2RSRubber seal4831.270.56
S684open492.51.58870.65
S684ZZShield4941.58871
S684-2RSRubber seal4941.58871
SMR104open41031.58880.96
SMR104ZZShield41041.58881.33
SMR104-2RSRubber seal41041.58881.33
S694open4114271.69
S694ZZShield4114271.75
S694-2RSRubber seal4114271.75
S604open4124272.19
S604ZZShield4124272.34
S604-2RSRubber seal4124272.34
S624open41352.38173.1
S624ZZShield41352.38173.2
S624-2RSRubber seal41352.38173.2
S634open41652.38175.24
S634ZZShield41652.38175.44
S634-2RSRubber seal41652.38175.44
SMR85open582180.25
SMR85ZZShield582.5180.34
SMR85-2RSRubber seal582.5180.34
SMR95open592.51.280.54
SMR95ZZShield5931.280.58
SMR95-2RSRubber seal5931.280.58
SMR105open51031.280.58
SMR105ZZShield51041.280.62
SMR105-2RSRubber seal51041.280.62
SMR115open51141.58880.62
SMR115ZZShield51141.58880.62
SMR115-2RSRubber seal51141.58880.62
S685open51131.58881.16
S685ZZShield51151.58881.93
S685-2RSRubber seal51151.58881.93
S695open5134282.31
S695ZZShield5134282.39
S695-2RSRubber seal5134282.39
S605open51452.38173.46
S605ZZShield51452.38173.75
S605-2RSRubber seal51452.38173.75
S625Rubber seal51652.77874.95
S625ZZRubber seal51652.77875.1
S625-2RSRubber seal51652.77875.1
S635Rubber seal51963.568.5
S635ZZRubber seal51963.568.89
S635-2RSRubber seal51963.568.89
SMR106Rubber seal6102.51.2100.55
SMR106ZZRubber seal61031.2100.7
SMR106-2RSRubber seal61031.2100.7
SMR126Rubber seal61231.58881.25
SMR126ZZRubber seal61241.58881.66
SMR126-2RSRubber seal61241.58881.66
S686Rubber seal6133.5281.87
S686ZZRubber seal6135282.68
S686-2RSRubber seal6135282.68
S696Rubber seal61552.38173.65
S696ZZRubber seal61552.38173.85
S696-2RSRubber seal61552.38173.85
S606Rubber seal61763.565.94
S606ZZRubber seal61763.566.89
S606-2RSRubber seal61763.566.89
S626Rubber seal61963.568.12
S626ZZRubber seal61963.568.65
S626-2RSRubber seal61963.568.65
S636Rubber seal62273.969713.9
S636ZZRubber seal62273.969714.5
S636-2RSRubber seal62273.969714.5
SMR117Rubber seal7112.51.290.59
SMR117ZZRubber seal71131.290.71
SMR117-2RSRubber seal71131.290.71
SMR137Rubber seal71331.2121.52
SMR137ZZRubber seal71341.2122.01
SMR137-2RSRubber seal71341.2122.01
S687Rubber seal7143.5292.03
S687ZZRubber seal7145292.95
S687-2RSRubber seal7145292.95
S697Rubber seal7175295.01
S697ZZRubber seal7175295.26
S697-2RSRubber seal7175295.26
S607Rubber seal71963.567.8
S607ZZRubber seal71963.568.24
S607-2RSRubber seal71963.568.24
S627Rubber seal72273.969712.7
S627ZZRubber seal72273.969713.1
S627-2RSRubber seal72273.969713.1
S637Rubber seal72694.762724.2
S637ZZRubber seal72694.762725.8
S637-2RSRubber seal72694.762725.8
SMR128Rubber seal8122.51.2120.7
SMR128ZZRubber seal8123.51.2120.99
SMR128-2RSRubber seal8123.51.2120.99
SMR148Rubber seal8143.51.588101.9
SMR148ZZRubber seal81441.588102.19
SMR148-2RSRubber seal81441.588102.19
S688Rubber seal81642103.11
S688ZZRubber seal81652104.05
S688-2RSRubber seal81652104.05
S698Rubber seal81963.17577.12
S698ZZRubber seal81963.17577.57
S698-2RSRubber seal81963.17577.57
S608Rubber seal82273.969711.8
S608ZZRubber seal82273.969712.9
S608-2RSRubber seal82273.969712.9
S628Rubber seal82483.969717.1
S628ZZRubber seal82483.969718.5
S628-2RSRubber seal82483.969718.5
S638Rubber seal82894.762728.1
S638ZZRubber seal82894.762730.3
S638-2RSRubber seal82894.762730.3
S679Rubber seal91431.588121.35
S679ZZRubber seal9144.51.588121.98
S679-2RSRubber seal9144.51.588121.98
S689Rubber seal91742113.41
S689ZZRubber seal91752114.38
S689-2RSRubber seal91752114.38
S699Rubber seal92063.17588.38
S699ZZRubber seal92073.17588.54
S699-2RSRubber seal92073.17588.54
S609Rubber seal92473.175814.7
S609ZZRubber seal92473.175816
S609-2RSRubber seal92473.175816
S629Rubber seal92684.762719
S629ZZRubber seal92684.762721.8
S629-2RSRubber seal92684.762721.8
S639Rubber seal930104.762736.2
S639ZZRubber seal930104.762737.1
S639-2RSRubber seal930104.762737.1