Address
304 North Cardinal
St. Dorchester Center, MA 02124
Work Hours
Monday to Friday: 7AM - 7PM
Weekend: 10AM - 5PM
Address
304 North Cardinal
St. Dorchester Center, MA 02124
Work Hours
Monday to Friday: 7AM - 7PM
Weekend: 10AM - 5PM

| Model | Bore d | Outer D | Width B | Flange OD Df | Flange Thickness Cf | Seal | Material |
|---|---|---|---|---|---|---|---|
| SF682 | 2 | 5 | 1.5 | 6.2 | 0.4 | Open | 440C |
| SF683ZZ | 3 | 7 | 2 | 8.2 | 0.5 | ZZ | 440C |
| SF684ZZ | 4 | 9 | 2.5 | 10.2 | 0.6 | ZZ | 440C |
| SF685 2RS | 5 | 11 | 3 | 12.2 | 0.7 | 2RS | 440C |
| SF693ZZ | 3 | 8 | 3 | 9.5 | 0.6 | ZZ | 440C |
| SF604 2RS | 4 | 12 | 4 | 14.0 | 0.7 | 2RS | 440C |
| SMF52ZZ | 2 | 5 | 2 | 6.5 | 0.4 | ZZ | 440C |
| SMF63ZZ | 3 | 6 | 2.5 | 7.5 | 0.5 | ZZ | 440C |
| Model | d(inch) | d(mm) | D(inch) | D(mm) | B(inch) | B(mm) | Flange OD(mm) | Seal | Material |
|---|---|---|---|---|---|---|---|---|---|
| SFR1 | 1/8″ | 3.175 | 3/8″ | 9.525 | 1/8″ | 3.175 | 11.10 | Open | 440C |
| SFR1A ZZ | 1/8″ | 3.175 | 1/2″ | 12.700 | 1/8″ | 3.175 | 14.30 | ZZ | 440C |
| SFR2 2RS | 3/16″ | 4.762 | 1/2″ | 12.700 | 3/16″ | 4.762 | 14.30 | 2RS | 440C |
| SFR4 ZZ | 1/4″ | 6.350 | 5/8″ | 15.875 | 1/4″ | 6.350 | 17.50 | ZZ | 440C |
Stainless steel flange bearings are miniature flanged ball bearings made of high-grade stainless steel. The integrated outer flange enables quick positioning and prevents axial movement during installation. Featuring excellent corrosion resistance, rust-proof performance, low noise and smooth operation, they are available in open, ZZ shielded and 2RS sealed types. These bearings work well in damp, dusty and corrosive environments, widely used for medical equipment, food machinery, marine devices, precision instruments and small motors.
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