This product series covers the specifications commonly used for miniature robotic joints. The flanged design simplifies joint stacking, eliminating the need for developers to design complex cover plates. Constructed from SUS304 stainless steel, the components ensure that critical motion joints do not seize, even when operating in challenging environments.
Bearing Features
The use of SUS304 across the entire series guarantees material consistency for high-volume procurement. For equipment requiring non-magnetic properties—such as ultrasonic testing devices—this series offers comprehensive support solutions ranging from micro-scale to small- and medium-sized shafts. Compared to standard carbon steel, SUS304 offers superior resistance to stress corrosion cracking caused by fluctuating heat and humidity, ensuring reliable service life, particularly in precision robotic gripper mechanisms.
Technical Specifications
| Bearing Reference | Boundary Diameters | Basic Dynamic | Basic Static | Limiting Speeds | ||||||||||||||||||
| Flange | Open | Shield | d inch |
d mm |
D inch |
D mm |
Df inch |
Df mm |
B inch |
B mm |
Bf inch |
Bf mm |
B1 inch |
B1 mm |
Bf1 inch |
Bf1 mm |
rsmin inch |
rsmin mm |
Cr kN |
Cor kN |
Grease | Oil |
| F | SFR144 | ZZ | 0.125 | 3.175 | 0.25 | 6.35 | 0.296 | 7.518 | 0.0938 | 2.381 | 0.023 | 0.584 | 0.1094 | 2.778 | 0.031 | 0.787 | 0.0039 | 0.1 | 0.314 | 0.108 | 6.9 | 7.8 |
| F | SFR2-5 | ZZ | 0.125 | 3.175 | 0.3125 | 7.938 | 0.359 | 9.119 | 0.1094 | 2.778 | 0.023 | 0.584 | 0.1406 | 3.572 | 0.031 | 0.787 | 0.0039 | 0.1 | 0.559 | 0.176 | 5.9 | 6.7 |
| F | SFR2-6 | ZZ | 0.125 | 3.175 | 0.375 | 9.525 | 0.422 | 10.719 | 0.1094 | 2.778 | 0.023 | 0.584 | 0.1406 | 3.572 | 0.031 | 0.787 | 0.0039 | 0.1 | 0.637 | 0.225 | 5.2 | 5.8 |
| F | SFR2 | ZZ | 0.125 | 3.175 | 0.375 | 9.525 | 0.44 | 11.176 | 0.1562 | 3.969 | 0.03 | 0.762 | 0.1562 | 3.969 | 0.03 | 0.762 | 0.0118 | 0.3 | 0.627 | 0.216 | 5.2 | 5.8 |
| - | SFR2A | ZZ | 0.125 | 3.175 | 0.5 | 12.7 | - | - | 0.1719 | 4.366 | - | - | 0.1719 | 4.366 | - | - | 0.0118 | 0.3 | 0.637 | 0.225 | 4.2 | 4.7 |

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