SPB USA
U.S.A.
SPB USA — 2257 Sarasota Center Blvd. Sarasota, FL 34240
Ph: 941.371.1655 Fx 941.371.1669 Email Us
JAPAN
Sapporo Precision, Inc. - Sapporo, Hokkaido
Kitanihon Seiki Co., Ltd. - Ashibetsu, Hokkaido
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All bearings are available in 52100 Chrome Steel or 440 Stainless Steel.
INCH-SERIES-OPEN-TYPE-cmyk
Dimensional Drawing
Unit of Measure
1 2 

Item #

Item Name

Bore Diameter (d)

Outer Diameter (D)

Width (B)

Load Rating (Cr)

Max. Speed (Grease) x 1000

Max. Speed (Oil) x 1000

Quantity
R09 N/A 0.0400 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.0400 in1.016 mm N/A 0.1250 in3.175 mm N/A 0.0469 in1.191 mm N/A 106 N N/A 115 rpm N/A 136 rpm
R0 N/A 0.0469 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.0469 in1.191 mm N/A 0.1562 in3.967 mm N/A 0.0625 in1.588 mm N/A 112 N N/A 105 rpm N/A 124 rpm
R1 N/A 0.0550 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.0550 in1.397 mm N/A 0.1875 in4.762 mm N/A 0.0781 in1.984 mm N/A 232 N N/A 97 rpm N/A 115 rpm
R1-4 N/A 0.0781 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.0781 in1.984 mm N/A 0.2500 in6.350 mm N/A 0.0937 in2.380 mm N/A 284 N N/A 77 rpm N/A 91 rpm
R133 N/A 0.0937 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.0937 in2.380 mm N/A 0.1875 in4.762 mm N/A 0.0625 in1.588 mm N/A 189 N N/A 90 rpm N/A 106 rpm
R1-5 N/A 0.0937 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.0937 in2.380 mm N/A 0.3125 in7.938 mm N/A 0.1094 in2.779 mm N/A 551 N N/A 72 rpm N/A 85 rpm
R144J N/A 0.1250 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.1250 in3.175 mm N/A 0.2500 in6.350 mm N/A 0.0937 in2.380 mm N/A 310 N N/A 77 rpm N/A 91 rpm
R144 N/A 0.1250 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.1250 in3.175 mm N/A 0.2500 in6.350 mm N/A 0.0937 in2.380 mm N/A 284 N N/A 77 rpm N/A 91 rpm
R2-5 N/A 0.1250 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.1250 in3.175 mm N/A 0.3125 in7.938 mm N/A 0.1094 in2.779 mm N/A 559 N N/A 70 rpm N/A 82 rpm
R2-6 N/A 0.1250 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.1250 in3.175 mm N/A 0.3750 in9.525 mm N/A 0.1094 in2.779 mm N/A 641 N N/A 63 rpm N/A 75 rpm
R2 N/A 0.1250 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.1250 in3.175 mm N/A 0.3750 in9.525 mm N/A 0.1562 in3.967 mm N/A 633 N N/A 66 rpm N/A 78 rpm
R2A N/A 0.1250 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.1250 in3.175 mm N/A 0.5000 in12.700 mm N/A 0.1719 in4.366 mm N/A 641 N N/A 63 rpm N/A 75 rpm
R155 N/A 0.1562 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.1562 in3.967 mm N/A 0.3125 in7.938 mm N/A 0.1094 in2.779 mm N/A 360 N N/A 64 rpm N/A 76 rpm
R156 N/A 0.1875 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.1875 in4.762 mm N/A 0.3125 in7.938 mm N/A 0.1094 in2.779 mm N/A 360 N N/A 64 rpm N/A 76 rpm
R166 N/A 0.1875 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.1875 in4.762 mm N/A 0.3750 in9.525 mm N/A 0.1250 in3.175 mm N/A 711 N N/A 59 rpm N/A 70 rpm
R3 N/A 0.1875 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.1875 in4.762 mm N/A 0.5000 in12.700 mm N/A 0.1562 in3.967 mm N/A 1300 N N/A 51 rpm N/A 60 rpm
R3A N/A 0.1875 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.1875 in4.762 mm N/A 0.6250 in15.875 mm N/A 0.1960 in4.978 mm N/A 1480 N N/A 42 rpm N/A 50 rpm
R168 N/A 0.2500 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.2500 in6.350 mm N/A 0.3750 in9.525 mm N/A 0.1250 in3.175 mm N/A 373 N N/A 55 rpm N/A 65 rpm
R188 N/A 0.2500 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.2500 in6.350 mm N/A 0.5000 in12.700 mm N/A 0.1250 in3.175 mm N/A 1080 N N/A 48 rpm N/A 56 rpm
R4 N/A 0.2500 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.2500 in6.350 mm N/A 0.6250 in15.875 mm N/A 0.1960 in4.978 mm N/A 1480 N N/A 42 rpm N/A 50 rpm
R4A N/A 0.2500 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.2500 in6.350 mm N/A 0.7500 in19.050 mm N/A 0.2188 in5.558 mm N/A 2340 N N/A 38 rpm N/A 45 rpm
R1810 N/A 0.3125 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.3125 in7.938 mm N/A 0.5000 in12.700 mm N/A 0.1562 in3.967 mm N/A 541 N N/A 45 rpm N/A 53 rpm
R6 N/A 0.3750 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.3750 in9.525 mm N/A 0.8750 in22.225 mm N/A 0.2188 in5.558 mm N/A 3330 N N/A 31 rpm N/A 37 rpm
R8 N/A 0.5000 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.5000 in12.700 mm N/A 1.1250 in28.575 mm N/A 0.2500 in6.350 mm N/A 5110 N N/A 27 rpm N/A 32 rpm
R10 N/A 0.6250 Inch (in) Bore Diameter (d) Open Inch Ball Bearing N/A 0.6250 in15.875 mm N/A 1.3750 in34.925 mm N/A 0.2812 in7.142 mm N/A 6000 N N/A 20 rpm N/A 24 rpm
Unit of Measure
1 2