FR1
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Overview |
|
| Part Number | FR1 |
Characteristics |
|
| System of Measurement | Inch |
| Bearing Type | Ball |
| Seal Type | Open |
| Inner Ring Type | Standard |
| For Load Direction | Radial |
| Construction | Single Row |
| Ball Qty | 6 |
| Tolerance Class | ABEC1 |
Dimensions |
|
| Bore Dia | 0.05556" |
| Bore Dia Tolerance | -0.0003" to 0" |
| Outer Dia | 0.1875" |
| Outer Dia Tolerance | -0.0003" to 0" |
| Width | 0.0781" |
| Width Tolerance | -0.005" to 0" |
| Ball Dia | 0.03941" |
| Flange Outer Dia | 0.234" |
| Flange Thickness | 0.023" |
| Radial Clearance | 0.0002" to 0.00039" |
| Radial Clearance Trade No | MC3 |
Material |
|
| Ring Material | Chrome Steel |
| Ball Material | Chrome Steel |
| Cage Material | Stainless Steel |
Performance |
|
| Dynamic Radial Load | 44 lbf |
| Static Radial Load | 12 lbf |
| Max Speed (X1000 rpm) | 90 |
| Temperature Range | -86 to 230 °F |
Properties |
|
| Lubrication | Required |
| RoHS | Compliant |
| REACH | Compliant |
| Weight | 0.19 g |
Inch Size Miniature Flanged Ball Bearings feature an integrated flange on the outer ring for easy end-mounting and secure axial positioning without additional retaining components. Manufactured with chrome steel (AISI 52100) rings, they deliver high hardness, excellent wear resistance, and reliable fatigue life under moderate to high speeds and radial loads. Available in inch dimensions, these compact bearings are widely used in precision instruments, medical devices, small motors, robotics, and office equipment.
Inch Size Miniature Flanged Ball Bearings feature an integrated flange on the outer ring for easy end-mounting and secure axial positioning without additional retaining components. The open configuration contains no seals or shields, allowing for easy relubrication and direct access to the rolling elements — making it ideal for applications where external lubrication systems are used or where the bearing operates in a clean, controlled environment. Available in inch dimensions, these compact open bearings are widely used in precision instruments, small motors, robotics, office equipment, and other applications requiring a clean, maintenance-friendly bearing solution.
Inch Size Miniature Flanged Ball Bearings feature an integrated flange on the outer ring for easy end-mounting and secure axial positioning without additional retaining components. Chrome steel balls deliver high hardness, excellent surface finish, and strong fatigue resistance, ensuring reliable performance under continuous operation at moderate to high speeds and radial loads. Available in inch dimensions, these compact bearings are widely used in precision instruments, medical devices, small motors, robotics, and office equipment.
What lubrication is recommended for bearings with chrome steel balls?
Standard mineral or synthetic grease is recommended. Chrome steel balls perform well with most conventional bearing lubricants, and proper lubrication is essential to protect the ball surface and maintain service life.
What lubrication is recommended for open miniature flanged ball bearings?
Open bearings can be lubricated with either grease or oil depending on the application requirements. Oil lubrication is particularly effective in open configurations as it can be applied directly to the rolling elements, making it suitable for high-speed or temperature-sensitive applications.
What are the key mechanical properties of chrome steel balls?
Chrome steel balls offer high hardness (typically 60–66 HRC after heat treatment), excellent surface finish, low surface roughness, and strong rolling contact fatigue resistance, all of which contribute to reliable and long-lasting bearing performance.




