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Century Spring

BB-85CS - 0.53" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 6.5 coils and closed & ground ends. This spring features an O.D. of 0.296", and an I.D. of 0.202".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name BB-85
Ends Closed & Ground
Finish Zinc
Free Length 0.53 in
Inside Diameter 0.202 in
Material Spring Steel
Outside Diameter 0.296 in
Part Type Standard
Rate 100 lbs/in
SKU BB-85CS
Solid Length 0.31 in
Suggested Max Deflection 0.13 in
Suggested Max Load 13 lbf
Total Coils 6.5
Wire Diameter 0.047 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name BB-85
Ends Closed & Ground
Finish Zinc
Free Length 13.46 mm
Inside Diameter 5.13 mm
Material Spring Steel
Outside Diameter 7.52 mm
Part Type Standard
Rate 17.51 N/mm
SKU BB-85CS
Solid Length 7.87 mm
Suggested Max Deflection 3.3 mm
Suggested Max Load 57.82 N
Total Coils 6.5
Wire Diameter 1.19 mm
The BB-85CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.047" diameter spring steel, the BB-85 spring design exhibits reliable strength across its 6.5 active coils, withstanding repeated compression cycles with a maximum load of 13 lbf without succumbing to fatigue.

We manufacture the BB-85 design to provide a compression spring that is 0.53" long at rest and provides a consistent rate of 100 lbs/in along its recommended maximum of 0.13" deflection. For best results, your application should fully accommodate the inner (0.202") and outer (0.296") diameters of this spring and be designed for its closed & ground end configuration.

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