1/4 Inch ID Bearings Size Chart
1/4 Inch ID Bearings Size Chart
Miniature stainless steel flanged bearings with a 1/4 inch inner diameter. The S prefix indicates stainless steel material. The ~ symbol indicates an approximate fractional equivalent.
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| Type | d (in) | D (in) | D1 (in) | b Open (in) | b ZZ (in) | c Open (in) | c ZZ (in) | Cr (N) | Cor (N) | Grease (x1000 rpm) | Oil (x1000 rpm) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| SFR3ZZ | 1/4 | 1/2 | ~9/16 | ~13/64 | ~13/64 | ~3/64 | ~3/64 | 1301 | 488 | 43 | 53 |
| SFR168ZZ | 1/4 | 3/8 | ~27/64 | 1/8 | 1/8 | ~1/64 | ~1/32 | 373 | 172 | 48 | 56 |
| SFR188ZZ | 1/4 | 1/2 | ~35/64 | 1/8 | 3/16 | ~1/64 | ~3/64 | 1082 | 442 | 40 | 50 |
| SFR4ZZ | 1/4 | 5/8 | ~11/16 | ~13/64 | ~13/64 | ~3/64 | ~3/64 | 1480 | 621 | 38 | 45 |
