MR Series Miniature Bearings

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MR Series Miniature Bearings

The MR Series (Metric Miniature) represents some of the smallest precision bearings available. These bearings are designed to provide maximum performance in minimal space. Used widely in the RC industry, high-end fishing reels, and micro-robotics, the MR series is optimized for low friction and high rotational speeds.

Part Number Bore diameter Outside diameter Width For load direction Seal type Ring material Ball material Radial dynamic load rating Radial static load rating Limiting speed
MR31 1 mm 3 mm 1.5 mm Radial Open Chrome Steel Chrome Steel 22 lbf 6 lbf 117 X 1000 rpm
MR41x 1.2 mm 4 mm 1.8 mm Radial Open Chrome Steel Chrome Steel 25 lbf 7 lbf 105 X 1000 rpm
MR41xzz 1.2 mm 4 mm 2.5 mm Radial Shielded Chrome Steel Chrome Steel 25 lbf 7 lbf 105 X 1000 rpm
MR52 2 mm 5 mm 2 mm Radial Open Chrome Steel Chrome Steel 32 lbf 9 lbf 85 X 1000 rpm
MR52 2rs 2 mm 5 mm 2.5 mm Radial Sealed Chrome Steel Chrome Steel 32 lbf 9 lbf 85 X 1000 rpm
MR52zz 2 mm 5 mm 2.5 mm Radial Shielded Chrome Steel Chrome Steel 32 lbf 9 lbf 85 X 1000 rpm
MR62 2 mm 6 mm 2.5 mm Radial Open Chrome Steel Chrome Steel 63 lbf 18 lbf 75 X 1000 rpm
MR62 2rs 2 mm 6 mm 2.5 mm Radial Sealed Chrome Steel Chrome Steel 63 lbf 18 lbf 75 X 1000 rpm
MR62zz 2 mm 6 mm 2.5 mm Radial Shielded Chrome Steel Chrome Steel 63 lbf 18 lbf 75 X 1000 rpm
MR72 2 mm 7 mm 2.5 mm Radial Open Chrome Steel Chrome Steel 74 lbf 23 lbf 63 X 1000 rpm
MR72 2rs 2 mm 7 mm 3 mm Radial Sealed Chrome Steel Chrome Steel 74 lbf 23 lbf 63 X 1000 rpm
MR72zz 2 mm 7 mm 3 mm Radial Shielded Chrome Steel Chrome Steel 74 lbf 23 lbf 65 X 1000 rpm
MR82x 2.5 mm 8 mm 2.5 mm Radial Open Chrome Steel Chrome Steel 107 lbf 32 lbf 60 X 1000 rpm
MR82x 2rs 2.5 mm 8 mm 2.5 mm Radial Sealed Chrome Steel Chrome Steel 107 lbf 32 lbf 60 X 1000 rpm
MR82xzz 2.5 mm 8 mm 2.5 mm Radial Shielded Chrome Steel Chrome Steel 107 lbf 32 lbf 60 X 1000 rpm
MR63 3 mm 6 mm 2 mm Radial Open Chrome Steel Chrome Steel 40 lbf 13 lbf 71 X 1000 rpm
MR63 2rs 3 mm 6 mm 2.5 mm Radial Sealed Chrome Steel Chrome Steel 40 lbf 13 lbf 71 X 1000 rpm
MR63zz 3 mm 6 mm 2.5 mm Radial Shielded Chrome Steel Chrome Steel 40 lbf 13 lbf 71 X 1000 rpm
MR83 3 mm 8 mm 2.5 mm Radial Open Chrome Steel Chrome Steel 76 lbf 25 lbf 60 X 1000 rpm
MR83 2rs 3 mm 8 mm 3 mm Radial Sealed Chrome Steel Chrome Steel 76 lbf 25 lbf 60 X 1000 rpm
MR83zz 3 mm 8 mm 3 mm Radial Shielded Chrome Steel Chrome Steel 76 lbf 25 lbf 60 X 1000 rpm
MR93 3 mm 9 mm 2.5 mm Radial Open Chrome Steel Chrome Steel 109 lbf 34 lbf 56 X 1000 rpm
MR93 2rs 3 mm 9 mm 4 mm Radial Sealed Chrome Steel Chrome Steel 109 lbf 34 lbf 56 X 1000 rpm
MR93zz 3 mm 9 mm 4 mm Radial Shielded Chrome Steel Chrome Steel 109 lbf 34 lbf 56 X 1000 rpm
MR74 4 mm 7 mm 2 mm Radial Open Chrome Steel Chrome Steel 59 lbf 21 lbf 60 X 1000 rpm
MR74 2rs 4 mm 7 mm 2.5 mm Radial Sealed Chrome Steel Chrome Steel 49 lbf 19 lbf 60 X 1000 rpm
MR74zz 4 mm 7 mm 2.5 mm Radial Shielded Chrome Steel Chrome Steel 49 lbf 19 lbf 60 X 1000 rpm
MR84 4 mm 8 mm 2 mm Radial Open Chrome Steel Chrome Steel 76 lbf 25 lbf 56 X 1000 rpm
MR84 2rs 4 mm 8 mm 3 mm Radial Sealed Chrome Steel Chrome Steel 76 lbf 25 lbf 56 X 1000 rpm
MR84zz 4 mm 8 mm 3 mm Radial Shielded Chrome Steel Chrome Steel 76 lbf 25 lbf 56 X 1000 rpm
MR104 4 mm 10 mm 3 mm Radial Open Chrome Steel Chrome Steel 136 lbf 49 lbf 48 X 1000 rpm
MR104 2rs 4 mm 10 mm 4 mm Radial Sealed Chrome Steel Chrome Steel 136 lbf 49 lbf 48 X 1000 rpm
MR104zz 4 mm 10 mm 4 mm Radial Shielded Chrome Steel Chrome Steel 136 lbf 49 lbf 48 X 1000 rpm
MR85 5 mm 8 mm 2 mm Radial Open Chrome Steel Chrome Steel 59 lbf 22 lbf 53 X 1000 rpm
MR85 2rs 5 mm 8 mm 2.5 mm Radial Sealed Chrome Steel Chrome Steel 42 lbf 16 lbf 53 X 1000 rpm
MR85zz 5 mm 8 mm 2.5 mm Radial Shielded Chrome Steel Chrome Steel 42 lbf 16 lbf 53 X 1000 rpm
MR95 5 mm 9 mm 2.5 mm Radial Open Chrome Steel Chrome Steel 82 lbf 30 lbf 50 X 1000 rpm
MR95 2rs 5 mm 9 mm 3 mm Radial Sealed Chrome Steel Chrome Steel 82 lbf 30 lbf 50 X 1000 rpm
MR95zz 5 mm 9 mm 3 mm Radial Shielded Chrome Steel Chrome Steel 82 lbf 30 lbf 50 X 1000 rpm
MR105 5 mm 10 mm 3 mm Radial Open Chrome Steel Chrome Steel 82 lbf 30 lbf 50 X 1000 rpm
MR105 2rs 5 mm 10 mm 4 mm Radial Sealed Chrome Steel Chrome Steel 82 lbf 30 lbf 50 X 1000 rpm
MR105zz 5 mm 10 mm 4 mm Radial Shielded Chrome Steel Chrome Steel 82 lbf 30 lbf 50 X 1000 rpm
MR115 5 mm 11 mm 4 mm Radial Open Chrome Steel Chrome Steel 137 lbf 51 lbf 45 X 1000 rpm
MR115 2rs 5 mm 11 mm 4 mm Radial Sealed Chrome Steel Chrome Steel 137 lbf 51 lbf 45 X 1000 rpm
MR115zz 5 mm 11 mm 4 mm Radial Shielded Chrome Steel Chrome Steel 137 lbf 51 lbf 45 X 1000 rpm
MR106 6 mm 10 mm 2.5 mm Radial Open Chrome Steel Chrome Steel 95 lbf 39 lbf 45 X 1000 rpm
MR106 2rs 6 mm 10 mm 3 mm Radial Sealed Chrome Steel Chrome Steel 95 lbf 39 lbf 45 X 1000 rpm
MR106zz 6 mm 10 mm 3 mm Radial Shielded Chrome Steel Chrome Steel 95 lbf 39 lbf 45 X 1000 rpm
MR126 6 mm 12 mm 3 mm Radial Open Chrome Steel Chrome Steel 137 lbf 53 lbf 43 X 1000 rpm
MR126 2rs 6 mm 12 mm 4 mm Radial Sealed Chrome Steel Chrome Steel 137 lbf 53 lbf 43 X 1000 rpm
MR126zz 6 mm 12 mm 4 mm Radial Shielded Chrome Steel Chrome Steel 137 lbf 53 lbf 43 X 1000 rpm
MR117 7 mm 11 mm 2.5 mm Radial Open Chrome Steel Chrome Steel 87 lbf 36 lbf 43 X 1000 rpm
MR117 2rs 7 mm 11 mm 3 mm Radial Sealed Chrome Steel Chrome Steel 87 lbf 36 lbf 43 X 1000 rpm
MR117zz 7 mm 11 mm 3 mm Radial Shielded Chrome Steel Chrome Steel 87 lbf 36 lbf 43 X 1000 rpm
MR137 7 mm 13 mm 3 mm Radial Open Chrome Steel Chrome Steel 104 lbf 50 lbf 40 X 1000 rpm
MR137 2rs 7 mm 13 mm 4 mm Radial Sealed Chrome Steel Chrome Steel 104 lbf 50 lbf 40 X 1000 rpm
MR137zz 7 mm 13 mm 4 mm Radial Shielded Chrome Steel Chrome Steel 104 lbf 50 lbf 40 X 1000 rpm
MR128 8 mm 12 mm 2.5 mm Radial Open Chrome Steel Chrome Steel 104 lbf 49 lbf 40 X 1000 rpm
MR128 2rs 8 mm 12 mm 3.5 mm Radial Sealed Chrome Steel Chrome Steel 104 lbf 49 lbf 40 X 1000 rpm
MR128zz 8 mm 12 mm 3.5 mm Radial Shielded Chrome Steel Chrome Steel 104 lbf 49 lbf 40 X 1000 rpm
MR148 8 mm 14 mm 3.5 mm Radial Open Chrome Steel Chrome Steel 156 lbf 70 lbf 38 X 1000 rpm
MR148 2rs 8 mm 14 mm 4 mm Radial Sealed Chrome Steel Chrome Steel 156 lbf 70 lbf 38 X 1000 rpm
MR148zz 8 mm 14 mm 4 mm Radial Shielded Chrome Steel Chrome Steel 156 lbf 70 lbf 38 X 1000 rpm
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