Emerson Bearing Logo
Emerson Bearing Company
201 Brighton Avenue
Boston, MA 02134
Phone: (800) 225-4587 • Fax: (800) 252-1996
Email: info@emersonbearing.com
Print Back
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
Items BB8-Rseries
R2
R Series Miniature / Instrumentation Ball Bearings 		BB8-Rseries
R3
R Series Miniature / Instrumentation Ball Bearings 		BB8-Rseries
R4
R Series Miniature / Instrumentation Ball Bearings 		BB8-Rseries
R4A
R Series Miniature / Instrumentation Ball Bearings 		BB8-Rseries
R6
R Series Miniature / Instrumentation Ball Bearings
(d) Bore Diameter N/A 0.1250 in N/A 0.1880 in N/A 0.2500 in N/A 0.2500 in N/A 0.3750 in
(D) Outer Diameter N/A 0.375 in N/A 0.5000 in N/A 0.6250 in N/A 0.6250 in N/A 0.8750 in
(B) Width Shielded/Sealed N/A 0.1562 in N/A 0.1960 in N/A 0.1960 in N/A 0.2812 in N/A 0.2812 in
(B) Width Open Style N/A 0.1562 in N/A 0.1562 in N/A 0.1960 in N/A 0.2188 in N/A 0.2188 in
(rs) Minimum Radius N/A 0.012 in N/A 0.012 in N/A 0.012 in N/A 0.016 in N/A 0.016 in
(C) Dynamic Load N/A 144 lb N/A 295 lb N/A 335 lb N/A 525 lb N/A 745 lb
(Co) Static Load N/A 50 lb N/A 110 lb N/A 139 lb N/A 199 lb N/A 315 lb
(Grease) Lubrication Speed N/A N/A N/A 36000 min-1 N/A 34000 min-1 N/A 31000 min-1
(Oil) Lubrication Speed N/A N/A N/A 43000 min-1 N/A 40000 min-1 N/A 37000 min-1
Weight N/A 0.01 lb N/A 0.01 lb N/A 0.01 lb N/A 0.03 lb N/A 0.03 lb
Common Options N/A A 1-7-- Abec class 1-7 DD-- Two Rubber Seals EE-- Extended Inner Ring LG-- Lubricant: Grease LO-- Lubricant: Oil P 2-5-- Radial play in ten thousandths ZZ-- Two Metal Shields