1/2" inner diameter = 0.500 inch

SB201-8 Bearing 1/2" inch Bore Insert Mounted Bearings

Price: $7.77

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F1636 Unground Flanged Full Complement Bearing 1/2"x1 1/8"x1/2" Inch Ball Bearings

Price: $4.77

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SR8-2RS Ceramic Bearing Stainless Steel Sealed ABEC-5 1/2"x1 1/8"x5/16" inch Ball Bearings

Price: $29.00

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SR8-2RS ABEC-5 Sealed Bearing Si3N4 Ceramic Stainless Steel 1/2"x1 1/8"x5/16" inch Ball Bearings

Price: $39.00

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F1644 Unground Flanged Full Complement Bearing 1/2"x1 3/8"x1/2" Inch Ball Bearings

Price: $5.55

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F1650 Unground Flanged Full Complement Bearing 1/2"x1 9/16"x21/32" Inch Ball Bearings

Price: $6.49

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SCH87 Needle Bearing 1/2"x3/4"x7/16" inch BHA87ZOH Needle Bearings

Price: $4.95

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SCH812 Needle Bearing 1/2"x3/4"x3/4" inch BHA812ZOH Needle Bearings

Price: $4.95

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1/2" Miniature Stamped Pillow Block Mounted Bearings

Price: $3.95

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Plastic Bearing Glass Balls 1/2"x1 1/8"x5/16" inch Ball Bearings

Price: $4.73

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FR8UG Open 1/2"x1 1/8"x5/16" inch Ball Bearings

Price: $7.77

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F1638 Unground Flanged Full Complement 1/2"x1 3/16"x1/2" Inch Ball Bearings

Price: $5.55

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R1212ZZ Ceramic Shielded Bearing 1/2"x3/4"x5/32" Inch Miniature Ball Bearings

Price: $19.95

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