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Century Spring

72738CS - 4.5" Music Wire Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from music wire with 14 coils and closed & ground ends. This spring features an O.D. of 1.225", and an I.D. of 0.901".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 72738
Ends Closed & Ground
Finish None
Free Length 4.5 in
Inside Diameter 0.901 in
Material Music Wire
Outside Diameter 1.225 in
Part Type Standard
Rate 69 lbs/in
SKU 72738CS
Solid Length 2.27 in
Suggested Max Deflection 2.1 in
Suggested Max Load 143 lbf
Total Coils 14
Wire Diameter 0.162 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 72738
Ends Closed & Ground
Finish None
Free Length 114.3 mm
Inside Diameter 22.89 mm
Material Music Wire
Outside Diameter 31.12 mm
Part Type Standard
Rate 12.08 N/mm
SKU 72738CS
Solid Length 57.66 mm
Suggested Max Deflection 53.34 mm
Suggested Max Load 636.06 N
Total Coils 14
Wire Diameter 4.11 mm
The 72738 compression spring is engineered for optimal performance in demanding applications. Constructed from high-quality music wire and designed with precision and durability in mind, this spring is an essential component for a variety of mechanical systems where reliable force and resilience are paramount.

The 72738CS compression spring is designed with a free length of 4" total of 12.6 coils, and a rate of 66 lbs/in providing a balanced combination of flexibility and strength. This spring coil, and its closed & ground end configuration allows for efficient energy storage and release, making it suitable for applications requiring precise motion control.

The 72738 spring design is ideal for use in industrial machinery, automotive systems, and various mechanical assemblies where reliable force application is crucial. Its robust construction and thoughtful design make it a dependable choice for engineers seeking a high-performance spring solution.

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