This 3/16 x 1/2 x 1/5 inch (R3-ZZ) bearing is an imperial deep groove ball bearing. The R3-ZZ inner diameter is 3/16 in (4.775 mm), the R3-ZZ outer diameter is 3/16 inch (12.7 mm), the R3-ZZ width is 1/5 in (5.08 mm).
This bearing has non-contact metal shields on both sides to protect the bearing from dust or any possible contamination, which can extend bearing life, and retain the lubricant in the bearing.
NZ $2.00 each
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