Inch flange miniature bearings are also known as inch flange micro ball bearings. SXD produces stainless steel inch flange miniature bearings in all inch sizes. Stainless steel materials can be 440 (9Cr18), 420 (9Cr13), or 316 stainless steel. Compared with ordinary bearing steel inch flange miniature bearings, stainless steel inch flange miniature ball bearings can prevent corrosion caused by certain acids or moisture. Stainless steel inch miniature ball bearings have obvious advantages such as stable operation, low noise, low magnets, wide application range, and good anti-corrosion and rust resistance. They are widely used in medical equipment, low-temperature engineering, optical instruments, high-speed machine tools, high-speed motors, printing machinery, etc Food processing machinery and other fields.
| Bearing No. | SEAL TYPE | Bore diameter(d) | Outer diameter(D) | Width(B) | BALL SIZE(mm) | BALL QTY | weight(g) |
| SFR1-4 | open | 5/64″︱1.984mm | 1/4″︱6.35mm | 3/32″︱2.381mm | 1 | 7 | 0.4 |
| SFR1-4ZZ | Shields | 5/64″︱1.984mm | 1/4″︱6.35mm | 0.1406″︱3.571mm | 1 | 7 | 0.53 |
| SFR1-4 2RS | Rubber seal | 5/64″︱1.984mm | 1/4″︱6.35mm | 0.1406″︱3.571mm | 1 | 7 | 0.67 |
| SFR1-5 | open | 3/32″︱2.381mm | 5/16″︱7.938mm | 0.1094″︱2.779mm | 1.588 | 6 | 0.67 |
| SFR1-5ZZ | Shields | 3/32″︱2.381mm | 5/16″︱7.938mm | 0.1406″︱3.571mm | 1.588 | 6 | 1.25 |
| SFR1-5 2RS | Rubber seal | 3/32″︱2.381mm | 5/16″︱7.938mm | 0.1406″︱3.571mm | 1.588 | 6 | 1.25 |
| SFR133 | open | 3/32″︱2.381mm | 3/16″︱4.762mm | 0.0625″︱1.588mm | 0.8 | 7 | 0.13 |
| SFR133ZZ | Shields | 3/32″︱2.381mm | 3/16″︱4.762mm | 3/32″︱2.381mm | 0.8 | 7 | 0.21 |
| SFR133-2RS | Rubber seal | 3/32″︱2.381mm | 3/16″︱4.762mm | 3/32″︱2.381mm | 0.8 | 7 | 0.21 |
| SFR144 | open | 1/8″︱3.175mm | 1/4″︱6.35mm | 3/32″︱2.381mm | 1 | 7 | 0.33 |
| SFR144ZZ | Shields | 1/8″︱3.175mm | 1/4″︱6.35mm | 0.1094″︱2.779mm | 1 | 7 | 0.48 |
| SFR144-2RS | Rubber seal | 1/8″︱3.175mm | 1/4″︱6.35mm | 0.1094″︱2.779mm | 1 | 7 | 0.48 |
| SFR2 | open | 1/8″︱3.175mm | 3/8″︱9.525mm | 5/32″︱3.967mm | 1.588 | 7 | 1.2 |
| SFR2ZZ | Shields | 1/8″︱3.175mm | 3/8″︱9.525mm | 5/32″︱3.967mm | 1.588 | 7 | 1.53 |
| SFR2-2RS | Rubber seal | 1/8″︱3.175mm | 3/8″︱9.525mm | 5/32″︱3.967mm | 1.588 | 7 | 1.53 |
| SFR2-5 | open | 1/8″︱3.175mm | 5/16″︱7.938mm | 0.1094″︱2.779mm | 1.588 | 6 | 0.57 |
| SFR2-5ZZ | Shields | 1/8″︱3.175mm | 5/16″︱7.938mm | 0.1406″︱3.571mm | 1.588 | 6 | 0.84 |
| SFR2-5-2RS | Rubber seal | 1/8″︱3.175mm | 5/16″︱7.938mm | 0.1406″︱3.571mm | 1.588 | 6 | 0.84 |
| SFR2-6 | open | 1/8″︱3.175mm | 3/8″︱9.525mm | 0.1094″︱2.779mm | 1.588 | 7 | 1.05 |
| SFR2-6ZZ | Shields | 1/8″︱3.175mm | 3/8″︱9.525mm | 0.1406″︱3.571mm | 1.588 | 7 | 1.35 |
| SFR2-6-2RS | Rubber seal | 1/8″︱3.175mm | 3/8″︱9.525mm | 0.1406″︱3.571mm | 1.588 | 7 | 1.35 |
| SFR155 | open | 5/32″︱3.969mm | 5/16″︱7.938mm | 0.1094″︱2.779mm | 1 | 10 | 0.56 |
| SFR155ZZ | Shields | 5/32″︱3.969mm | 5/16″︱7.938mm | 1/8″︱3.175mm | 1 | 10 | 0.72 |
| SFR155-2RS | Rubber seal | 5/32″︱3.969mm | 5/16″︱7.938mm | 1/8″︱3.175mm | 1 | 10 | 0.72 |
| SFR156 | open | 3/16″︱4.762mm | 5/16″︱7.938mm | 0.1094″︱2.779mm | 1 | 10 | 0.47 |
| SFR156ZZ | Shields | 3/16″︱4.762mm | 5/16″︱7.938mm | 1/8″︱3.175mm | 1 | 10 | 0.56 |
| SFR156-2RS | Rubber seal | 3/16″︱4.762mm | 5/16″︱7.938mm | 1/8″︱3.175mm | 1 | 10 | 0.56 |
| SFR166 | open | 3/16″︱4.762mm | 3/8″︱9.525mm | 1/8″︱3.175mm | 1.588 | 8 | 0.9 |
| SFR166ZZ | Shields | 3/16″︱4.762mm | 3/8″︱9.525mm | 1/8″︱3.175mm | 1.588 | 8 | 0.97 |
| SFR166-2RS | Rubber seal | 3/16″︱4.762mm | 3/8″︱9.525mm | 1/8″︱3.175mm | 1.588 | 8 | 0.97 |
| SFR3 | open | 3/16″︱4.762mm | 1/2″︱12.7mm | 5/32″︱3.967mm | 2.381 | 7 | 2.5 |
| SFR3ZZ | Shields | 3/16″︱4.762mm | 1/2″︱12.7mm | 0.1960″︱4.978mm | 2.381 | 7 | 3.24 |
| SFR3-2RS | Rubber seal | 3/16″︱4.762mm | 1/2″︱12.7mm | 0.1960″︱4.978mm | 2.381 | 7 | 3.24 |
| SFR168 | open | 1/4″︱6.35mm | 3/8″︱9.525mm | 1/8″︱3.175mm | 1 | 11 | 0.66 |
| SFR168ZZ | Shields | 1/4″︱6.35mm | 3/8″︱9.525mm | 1/8″︱3.175mm | 1 | 11 | 0.73 |
| SFR168-2RS | Rubber seal | 1/4″︱6.35mm | 3/8″︱9.525mm | 1/8″︱3.175mm | 1 | 11 | 0.73 |
| SFR188 | open | 1/4″︱6.35mm | 1/2″︱12.7mm | 1/8″︱3.175mm | 2 | 8 | 1.71 |
| SFR188ZZ | Shields | 1/4″︱6.35mm | 1/2″︱12.7mm | 3/16″︱4.762mm | 2 | 8 | 2.54 |
| SFR188-2RS | Rubber seal | 1/4″︱6.35mm | 1/2″︱12.7mm | 3/16″︱4.762mm | 2 | 8 | 2.54 |
| SFR4 | open | 1/4″︱6.35mm | 5/8″︱15.875 | 0.1960″︱4.978mm | 2.381 | 8 | 4.82 |
| SFR4ZZ | Shields | 1/4″︱6.35mm | 5/8″︱15.875 | 0.1960″︱4.978mm | 2.381 | 8 | 4.9 |
| SFR4-2RS | Rubber seal | 1/4″︱6.35mm | 5/8″︱15.875 | 0.1960″︱4.978mm | 2.381 | 8 | 4.9 |
| SFR1810 | open | 5/16″︱7.938mm | 1/2″︱12.7mm | 5/32″︱3.967mm | 1.2 | 12 | 1.54 |
| SFR1810ZZ | Shields | 5/16″︱7.938mm | 1/2″︱12.7mm | 5/32″︱3.967mm | 1.2 | 12 | 1.72 |
| SFR1810-2RS | Rubber seal | 5/16″︱7.938mm | 1/2″︱12.7mm | 5/32″︱3.967mm | 1.2 | 12 | 1.72 |
| SFR6 | open | 3/8″︱9.525mm | 7/8″︱22.225 | 0.2188″︱5.558 | 3.97 | 7 | 9.71 |
| SFR6ZZ | Shields | 3/8″︱9.525mm | 7/8″︱22.225 | 0.2812″︱7.142mm | 3.97 | 7 | 12.39 |
| SFR6-2RS | Rubber seal | 3/8″︱9.525mm | 7/8″︱22.225 | 0.2812″︱7.142mm | 3.97 | 7 | 12.39 |
| SFR8 | open | 1/2″︱12.7mm | 1 1/8″︱34.925mm | 1/4″︱6.35mm | 4.762 | 8 | 24 |
| SFR8ZZ | Shields | 1/2″︱12.7mm | 1 1/8″︱34.925mm | 5/16″︱7.938mm | 4.762 | 8 | 25.6 |
| SFR8-2RS | Rubber seal | 1/2″︱12.7mm | 1 1/8″︱34.925mm | 5/16″︱7.938mm | 4.762 | 8 | 25.6 |
| Bearing No. | SEAL TYPE | Bore diameter(d) | Outer diameter(D) | Width(B) | BALL SIZE(mm) | BALL QTY | weight(g) |
| SFR1-4 | open | 5/64″︱1.984mm | 1/4″︱6.35mm | 3/32″︱2.381mm | 1 | 7 | 0.4 |
| SFR1-4ZZ | Shields | 5/64″︱1.984mm | 1/4″︱6.35mm | 0.1406″︱3.571mm | 1 | 7 | 0.53 |
| SFR1-4 2RS | Rubber seal | 5/64″︱1.984mm | 1/4″︱6.35mm | 0.1406″︱3.571mm | 1 | 7 | 0.67 |
| SFR1-5 | open | 3/32″︱2.381mm | 5/16″︱7.938mm | 0.1094″︱2.779mm | 1.588 | 6 | 0.67 |
| SFR1-5ZZ | Shields | 3/32″︱2.381mm | 5/16″︱7.938mm | 0.1406″︱3.571mm | 1.588 | 6 | 1.25 |
| SFR1-5 2RS | Rubber seal | 3/32″︱2.381mm | 5/16″︱7.938mm | 0.1406″︱3.571mm | 1.588 | 6 | 1.25 |
| SFR133 | open | 3/32″︱2.381mm | 3/16″︱4.762mm | 0.0625″︱1.588mm | 0.8 | 7 | 0.13 |
| SFR133ZZ | Shields | 3/32″︱2.381mm | 3/16″︱4.762mm | 3/32″︱2.381mm | 0.8 | 7 | 0.21 |
| SFR133-2RS | Rubber seal | 3/32″︱2.381mm | 3/16″︱4.762mm | 3/32″︱2.381mm | 0.8 | 7 | 0.21 |
| SFR144 | open | 1/8″︱3.175mm | 1/4″︱6.35mm | 3/32″︱2.381mm | 1 | 7 | 0.33 |
| SFR144ZZ | Shields | 1/8″︱3.175mm | 1/4″︱6.35mm | 0.1094″︱2.779mm | 1 | 7 | 0.48 |
| SFR144-2RS | Rubber seal | 1/8″︱3.175mm | 1/4″︱6.35mm | 0.1094″︱2.779mm | 1 | 7 | 0.48 |
| SFR2 | open | 1/8″︱3.175mm | 3/8″︱9.525mm | 5/32″︱3.967mm | 1.588 | 7 | 1.2 |
| SFR2ZZ | Shields | 1/8″︱3.175mm | 3/8″︱9.525mm | 5/32″︱3.967mm | 1.588 | 7 | 1.53 |
| SFR2-2RS | Rubber seal | 1/8″︱3.175mm | 3/8″︱9.525mm | 5/32″︱3.967mm | 1.588 | 7 | 1.53 |
| SFR2-5 | open | 1/8″︱3.175mm | 5/16″︱7.938mm | 0.1094″︱2.779mm | 1.588 | 6 | 0.57 |
| SFR2-5ZZ | Shields | 1/8″︱3.175mm | 5/16″︱7.938mm | 0.1406″︱3.571mm | 1.588 | 6 | 0.84 |
| SFR2-5-2RS | Rubber seal | 1/8″︱3.175mm | 5/16″︱7.938mm | 0.1406″︱3.571mm | 1.588 | 6 | 0.84 |
| SFR2-6 | open | 1/8″︱3.175mm | 3/8″︱9.525mm | 0.1094″︱2.779mm | 1.588 | 7 | 1.05 |
| SFR2-6ZZ | Shields | 1/8″︱3.175mm | 3/8″︱9.525mm | 0.1406″︱3.571mm | 1.588 | 7 | 1.35 |
| SFR2-6-2RS | Rubber seal | 1/8″︱3.175mm | 3/8″︱9.525mm | 0.1406″︱3.571mm | 1.588 | 7 | 1.35 |
| SFR155 | open | 5/32″︱3.969mm | 5/16″︱7.938mm | 0.1094″︱2.779mm | 1 | 10 | 0.56 |
| SFR155ZZ | Shields | 5/32″︱3.969mm | 5/16″︱7.938mm | 1/8″︱3.175mm | 1 | 10 | 0.72 |
| SFR155-2RS | Rubber seal | 5/32″︱3.969mm | 5/16″︱7.938mm | 1/8″︱3.175mm | 1 | 10 | 0.72 |
| SFR156 | open | 3/16″︱4.762mm | 5/16″︱7.938mm | 0.1094″︱2.779mm | 1 | 10 | 0.47 |
| SFR156ZZ | Shields | 3/16″︱4.762mm | 5/16″︱7.938mm | 1/8″︱3.175mm | 1 | 10 | 0.56 |
| SFR156-2RS | Rubber seal | 3/16″︱4.762mm | 5/16″︱7.938mm | 1/8″︱3.175mm | 1 | 10 | 0.56 |
| SFR166 | open | 3/16″︱4.762mm | 3/8″︱9.525mm | 1/8″︱3.175mm | 1.588 | 8 | 0.9 |
| SFR166ZZ | Shields | 3/16″︱4.762mm | 3/8″︱9.525mm | 1/8″︱3.175mm | 1.588 | 8 | 0.97 |
| SFR166-2RS | Rubber seal | 3/16″︱4.762mm | 3/8″︱9.525mm | 1/8″︱3.175mm | 1.588 | 8 | 0.97 |
| SFR3 | open | 3/16″︱4.762mm | 1/2″︱12.7mm | 5/32″︱3.967mm | 2.381 | 7 | 2.5 |
| SFR3ZZ | Shields | 3/16″︱4.762mm | 1/2″︱12.7mm | 0.1960″︱4.978mm | 2.381 | 7 | 3.24 |
| SFR3-2RS | Rubber seal | 3/16″︱4.762mm | 1/2″︱12.7mm | 0.1960″︱4.978mm | 2.381 | 7 | 3.24 |
| SFR168 | open | 1/4″︱6.35mm | 3/8″︱9.525mm | 1/8″︱3.175mm | 1 | 11 | 0.66 |
| SFR168ZZ | Shields | 1/4″︱6.35mm | 3/8″︱9.525mm | 1/8″︱3.175mm | 1 | 11 | 0.73 |
| SFR168-2RS | Rubber seal | 1/4″︱6.35mm | 3/8″︱9.525mm | 1/8″︱3.175mm | 1 | 11 | 0.73 |
| SFR188 | open | 1/4″︱6.35mm | 1/2″︱12.7mm | 1/8″︱3.175mm | 2 | 8 | 1.71 |
| SFR188ZZ | Shields | 1/4″︱6.35mm | 1/2″︱12.7mm | 3/16″︱4.762mm | 2 | 8 | 2.54 |
| SFR188-2RS | Rubber seal | 1/4″︱6.35mm | 1/2″︱12.7mm | 3/16″︱4.762mm | 2 | 8 | 2.54 |
| SFR4 | open | 1/4″︱6.35mm | 5/8″︱15.875 | 0.1960″︱4.978mm | 2.381 | 8 | 4.82 |
| SFR4ZZ | Shields | 1/4″︱6.35mm | 5/8″︱15.875 | 0.1960″︱4.978mm | 2.381 | 8 | 4.9 |
| SFR4-2RS | Rubber seal | 1/4″︱6.35mm | 5/8″︱15.875 | 0.1960″︱4.978mm | 2.381 | 8 | 4.9 |
| SFR1810 | open | 5/16″︱7.938mm | 1/2″︱12.7mm | 5/32″︱3.967mm | 1.2 | 12 | 1.54 |
| SFR1810ZZ | Shields | 5/16″︱7.938mm | 1/2″︱12.7mm | 5/32″︱3.967mm | 1.2 | 12 | 1.72 |
| SFR1810-2RS | Rubber seal | 5/16″︱7.938mm | 1/2″︱12.7mm | 5/32″︱3.967mm | 1.2 | 12 | 1.72 |
| SFR6 | open | 3/8″︱9.525mm | 7/8″︱22.225 | 0.2188″︱5.558 | 3.97 | 7 | 9.71 |
| SFR6ZZ | Shields | 3/8″︱9.525mm | 7/8″︱22.225 | 0.2812″︱7.142mm | 3.97 | 7 | 12.39 |
| SFR6-2RS | Rubber seal | 3/8″︱9.525mm | 7/8″︱22.225 | 0.2812″︱7.142mm | 3.97 | 7 | 12.39 |
| SFR8 | open | 1/2″︱12.7mm | 1 1/8″︱34.925mm | 1/4″︱6.35mm | 4.762 | 8 | 24 |
| SFR8ZZ | Shields | 1/2″︱12.7mm | 1 1/8″︱34.925mm | 5/16″︱7.938mm | 4.762 | 8 | 25.6 |
| SFR8-2RS | Rubber seal | 1/2″︱12.7mm | 1 1/8″︱34.925mm | 5/16″︱7.938mm | 4.762 | 8 | 25.6 |
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