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Century Spring

72557CS - 3.5" Music Wire Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from music wire with 11 coils and closed & ground ends. This spring features an O.D. of 1.1", and an I.D. of 0.89".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 72557
Ends Closed & Ground
Finish None
Free Length 3.5 in
Inside Diameter 0.89 in
Material Music Wire
Outside Diameter 1.1 in
Part Type Standard
Rate 20 lbs/in
SKU 72557CS
Solid Length 1.16 in
Suggested Max Deflection 2.3 in
Suggested Max Load 46 lbf
Total Coils 11
Wire Diameter 0.105 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 72557
Ends Closed & Ground
Finish None
Free Length 88.9 mm
Inside Diameter 22.61 mm
Material Music Wire
Outside Diameter 27.94 mm
Part Type Standard
Rate 3.5 N/mm
SKU 72557CS
Solid Length 29.46 mm
Suggested Max Deflection 58.42 mm
Suggested Max Load 204.61 N
Total Coils 11
Wire Diameter 2.67 mm
The 72557CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.105" diameter music wire, the 72557 spring design exhibits reliable strength across its 11 active coils, withstanding repeated compression cycles with a maximum load of 46 lbf without succumbing to fatigue.

We manufacture the 72557 design to provide a compression spring that is 3.5" long at rest and provides a consistent rate of 20 lbs/in along its recommended maximum of 2.3" deflection. For best results, your application should fully accommodate the inner (0.89") and outer (1.1") diameters of this spring and be designed for its closed & ground end configuration.

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