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Century Spring

72918CS - 3" Music Wire Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from music wire with 7.63 coils and closed & ground ends. This spring features an O.D. of 1.687", and an I.D. of 1.251".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 72918
Ends Closed & Ground
Finish None
Free Length 3 in
Inside Diameter 1.251 in
Material Music Wire
Outside Diameter 1.687 in
Part Type Standard
Rate 181 lbs/in
SKU 72918CS
Solid Length 1.66 in
Suggested Max Deflection 1.3 in
Suggested Max Load 242 lbf
Total Coils 7.63
Wire Diameter 0.218 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 72918
Ends Closed & Ground
Finish None
Free Length 76.2 mm
Inside Diameter 31.78 mm
Material Music Wire
Outside Diameter 42.85 mm
Part Type Standard
Rate 31.69 N/mm
SKU 72918CS
Solid Length 42.16 mm
Suggested Max Deflection 33.02 mm
Suggested Max Load 1076.42 N
Total Coils 7.63
Wire Diameter 5.54 mm
The 72918CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.218" diameter music wire, the 72918 spring design exhibits reliable strength across its 7.63 active coils, withstanding repeated compression cycles with a maximum load of 242 lbf without succumbing to fatigue.

We manufacture the 72918 design to provide a compression spring that is 3" long at rest and provides a consistent rate of 181 lbs/in along its recommended maximum of 1.3" deflection. For best results, your application should fully accommodate the inner (1.251") and outer (1.687") diameters of this spring and be designed for its closed & ground end configuration.

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