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 3 

Item #

Bore Diameter (d)

Outer Diameter (D)

Min. Radius (rs)

Width (B)

Load Rating (Cr)

Max. Speed (Grease) x 1000

Max. Speed (Oil) x 1000

Quantity
68/0.6 N/A 0.6 mm0.0236 in N/A 2.5 mm0.0984 in N/A 0.05 mm0.0020 in N/A 1.0 mm0.0394 in N/A 59 N N/A 128 rpm N/A 152 rpm
681 N/A 1.0 mm0.0394 in N/A 3.0 mm0.1181 in N/A 0.05 mm0.0020 in N/A 1.0 mm0.0394 in N/A 96 N N/A 117 rpm N/A 139 rpm
MR31 N/A 1.0 mm0.0394 in N/A 3.0 mm0.1181 in N/A 0.05 mm0.0020 in N/A 1.5 mm0.0591 in N/A 96 N N/A 117 rpm N/A 139 rpm
691 N/A 1.0 mm0.0394 in N/A 4.0 mm0.1575 in N/A 0.10 mm0.0039 in N/A 1.6 mm0.0630 in N/A 141 N N/A 105 rpm N/A 124 rpm
MR41X N/A 1.2 mm0.0472 in N/A 4.0 mm0.1575 in N/A 0.10 mm0.0039 in N/A 1.8 mm0.0709 in N/A 112 N N/A 105 rpm N/A 124 rpm
681X N/A 1.5 mm0.0591 in N/A 4.0 mm0.1575 in N/A 0.05 mm0.0020 in N/A 1.2 mm0.0472 in N/A 112 N N/A 105 rpm N/A 124 rpm
691X N/A 1.5 mm0.0591 in N/A 5.0 mm0.1969 in N/A 0.15 mm0.0059 in N/A 2.0 mm0.0787 in N/A 238 N N/A 94 rpm N/A 111 rpm
601X N/A 1.5 mm0.0591 in N/A 6.0 mm0.2362 in N/A 0.15 mm0.0059 in N/A 2.5 mm0.0984 in N/A 330 N N/A 86 rpm N/A 101 rpm
672 N/A 2.0 mm0.0787 in N/A 4.0 mm0.1575 in N/A 0.05 mm0.0020 in N/A 1.2 mm0.0472 in N/A 124 N N/A 98 rpm N/A 116 rpm
682 N/A 2.0 mm0.0787 in N/A 5.0 mm0.1969 in N/A 0.08 mm0.0031 in N/A 1.5 mm0.0591 in N/A 169 N N/A 94 rpm N/A 111 rpm
MR52 N/A 2.0 mm0.0787 in N/A 5.0 mm0.1969 in N/A 0.10 mm0.0039 in N/A 2.0 mm0.0787 in N/A 169 N N/A 94 rpm N/A 111 rpm
692 N/A 2.0 mm0.0787 in N/A 6.0 mm0.2362 in N/A 0.15 mm0.0059 in N/A 2.3 mm0.0906 in N/A 330 N N/A 86 rpm N/A 101 rpm
MR62 N/A 2.0 mm0.0787 in N/A 6.0 mm0.2362 in N/A 0.15 mm0.0059 in N/A 2.5 mm0.0984 in N/A 330 N N/A 86 rpm N/A 101 rpm
MR72 N/A 2.0 mm0.0787 in N/A 7.0 mm0.2756 in N/A 0.15 mm0.0059 in N/A 2.5 mm0.0984 in N/A 386 N N/A 76 rpm N/A 90 rpm
602 N/A 2.0 mm0.0787 in N/A 7.0 mm0.2756 in N/A 0.15 mm0.0059 in N/A 2.8 mm0.1102 in N/A 386 N N/A 76 rpm N/A 90 rpm
682X N/A 2.5 mm0.0984 in N/A 6.0 mm0.2362 in N/A 0.08 mm0.0031 in N/A 1.8 mm0.0709 in N/A 209 N N/A 81 rpm N/A 96 rpm
692X N/A 2.5 mm0.0984 in N/A 7.0 mm0.2756 in N/A 0.15 mm0.0059 in N/A 2.5 mm0.0984 in N/A 386 N N/A 76 rpm N/A 90 rpm
MR82X N/A 2.5 mm0.0984 in N/A 8.0 mm0.3150 in N/A 0.20 mm0.0079 in N/A 2.5 mm0.0984 in N/A 559 N N/A 70 rpm N/A 82 rpm
602X N/A 2.5 mm0.0984 in N/A 8.0 mm0.3150 in N/A 0.15 mm0.0059 in N/A 2.8 mm0.1102 in N/A 551 N N/A 72 rpm N/A 85 rpm
MR63 N/A 3.0 mm0.1181 in N/A 6.0 mm0.2362 in N/A 0.10 mm0.0039 in N/A 2.0 mm0.0787 in N/A 209 N N/A 81 rpm N/A 96 rpm
683 N/A 3.0 mm0.1181 in N/A 7.0 mm0.2756 in N/A 0.10 mm0.0039 in N/A 2.0 mm0.0787 in N/A 311 N N/A 74 rpm N/A 88 rpm
MR83 N/A 3.0 mm0.1181 in N/A 8.0 mm0.3150 in N/A 0.15 mm0.0059 in N/A 2.5 mm0.0984 in N/A 395 N N/A 67 rpm N/A 79 rpm
693 N/A 3.0 mm0.1181 in N/A 8.0 mm0.3150 in N/A 0.15 mm0.0059 in N/A 3.0 mm0.1181 in N/A 559 N N/A 70 rpm N/A 82 rpm
MR93 N/A 3.0 mm0.1181 in N/A 9.0 mm0.3543 in N/A 0.20 mm0.0079 in N/A 2.5 mm0.0984 in N/A 572 N N/A 66 rpm N/A 78 rpm
603 N/A 3.0 mm0.1181 in N/A 9.0 mm0.3543 in N/A 0.15 mm0.0059 in N/A 3.0 mm0.1181 in N/A 572 N N/A 66 rpm N/A 78 rpm
Unit of Measure
1 2 3