5108N548
Per Pack of 5
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| Part Number | FBAINFEI |
| Spring Type | Extension |
| Length | 2.25" |
| OD | 0.5" |
| Wire Diameter | 0.045" |
| Extended Length @ Maximum Load | 5.49" |
| Load Max. | 7.5 |
| Spring Rate | 2.1 lbf/in |
| Material | Music-Wire Steel |
| End Type | Loop |
| Load Min. | 0.7 |
| RoHS | RoHS 3 (2015/863/EU) Compliant |
| REACH | REACH (EC 1907/2006) (01/23/2024, 240 SVHC) Compliant |
| DFARS | Specialty Metals COTS-Exempt |
| Country of Origin | China |
NOTE:All other trademarks are the property of their respective owners.
All other trademarks mentioned herein are used for the purpose of compatibility description and product identification only. Lily Bearing is not affiliated with, endorsed by, or sponsored by the holders of these trademarks.
Design Features of FBAINFEI Spring
FBAINFEI are designed to operate under tension, storing energy when stretched and returning to their original length when the load is released. The loop ends are formed directly from the spring wire, providing secure attachment points while transmitting both tensile and bending stresses to the spring body. Their overall performance depends on factors such as wire diameter, coil geometry, and loop design, which together influence load capacity, fatigue life, and durability.
What Benefits Can FBAINFEI Spring Provide?
- Reliable Load Control – They deliver predictable tensile force, helping maintain consistent tension in mechanical systems.
- Secure Attachment – Loop ends allow easy and stable connection to hooks, pins, or brackets.
- Compact Design – Their simple structure fits well in limited spaces while still offering effective performance.
- Durability Under Repeated Use – Properly designed loop ends withstand cyclic loading, supporting long fatigue life.
- Wide Application Flexibility – Extension bearings are suitable for diverse uses, from industrial machinery to consumer products.
What Can FBAINFEI Spring Be Used for?
- Industrial Machinery –For tensioning mechanisms, conveyors, and automated equipment.
- Automotive Systems – In throttle controls, brake components, and door or hatch mechanisms.
- Garage Doors – To counterbalance door weight and assist smooth opening and closing.
- Consumer Products – In appliances, exercise equipment, and tools that require return force.
- Agricultural and Construction Equipment – For linkages, tension systems, and vibration control in harsh environments.




