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Emerson Bearing Company
201 Brighton Avenue
Boston, MA 02134
Phone: (800) 225-4587 • Fax: (800) 252-1996
Email: info@emersonbearing.com
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The R Series is the largest of the inch style miniature / instrumentation series. The bore range goes from 0.1250" to 1.2500" while the O.D. goes from 0.3750" to 2.250". This series provides high performance with small envelope dimensions. Available with shields or rubber.
BB8-Rseries
Unit of Measure
1 

Item #

(d) Bore Diameter

(D) Outer Diameter

(B) Width Shielded/Sealed

(B) Width Open Style

(rs) Minimum Radius

(C) Dynamic Load

(Co) Static Load

(Grease) Lubrication Speed

(Oil) Lubrication Speed

R2 N/A 0.1250 in N/A 0.375 in N/A 0.1562 in N/A 0.1562 in N/A 0.012 in N/A 144 lb N/A 50 lb N/A N/A
R3 N/A 0.1880 in N/A 0.5000 in N/A 0.1960 in N/A 0.1562 in N/A 0.012 in N/A 295 lb N/A 110 lb N/A N/A
R4 N/A 0.2500 in N/A 0.6250 in N/A 0.1960 in N/A 0.1960 in N/A 0.012 in N/A 335 lb N/A 139 lb N/A 36000 min-1 N/A 43000 min-1
R4A N/A 0.2500 in N/A 0.6250 in N/A 0.2812 in N/A 0.2188 in N/A 0.016 in N/A 525 lb N/A 199 lb N/A 34000 min-1 N/A 40000 min-1
R6 N/A 0.3750 in N/A 0.8750 in N/A 0.2812 in N/A 0.2188 in N/A 0.016 in N/A 745 lb N/A 315 lb N/A 31000 min-1 N/A 37000 min-1
R8 N/A 0.5000 in N/A 1.1250 in N/A 0.3125 in N/A 0.2500 in N/A 0.016 in N/A 1150 lb N/A 540 lb N/A 26000 min-1 N/A 30000 min-1
R10 N/A 0.6250 in N/A 1.375 in N/A 0.3438 in N/A 0.2812 in N/A 0.031 in N/A 1350 lb N/A 735 lb N/A 20000 min-1 N/A 24000 min-1
R12 N/A 0.7500 in N/A 1.625 in N/A 0.4375 in N/A 0.3125 in N/A 0.031 in N/A 1780 lb N/A 1000 lb N/A 18000 min-1 N/A 21000 min-1
R14 N/A 0.8750 in N/A 1.875 in N/A 0.5000 in N/A 0.3750 in N/A 0.031 in N/A 2270 lb N/A 1300 lb N/A 15000 min-1 N/A 18000 min-1
R16 N/A 1.0000 in N/A 2.0000 in N/A 0.5000 in N/A 0.3750 in N/A 0.031 in N/A 2260 lb N/A 1340 lb N/A 14000 min-1 N/A 16000 min-1
R18 N/A 1.1250 in N/A 2.125 in N/A 0.5000 in N/A 0.3750 in N/A 0.031 in N/A 2970 lb N/A 1860 lb N/A 13000 min-1 N/A 15000 min-1
R20 N/A 1.2500 in N/A 2.250 in N/A 0.5000 in N/A 0.3750 in N/A 0.031 in N/A 2650 lb N/A 1810 lb N/A 12000 min-1 N/A 14000 min-1
R2A N/A 0.1250 in N/A 0.5000 in N/A 0.1719 in N/A 0.1719 in N/A 0.012 in N/A 143 lb N/A 51 lb N/A 56000 min-1 N/A
R22 N/A 1.3750 in N/A 2.5000 in N/A 0.5625 in N/A 0.4375 in N/A 0.031 in N/A 3590 lb N/A 2320 lb N/A 13000 min-1 N/A
R24 N/A 1.5000 in N/A 2.6250 in N/A 0.5625 in N/A 0.4375 in N/A 0.031 in N/A 3770 lb N/A 2600 lb N/A 12000 min-1 N/A
Unit of Measure
1