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A Made In INDIA Spring Company
- A-MIISCO is manufacturer of customized springs catering to the needs of the Construction & Mining Equipment, Vibrating Screen ,Furnace & Foundry Equipments Marine Equipments Elevators Power Transmission Control and Process Valve industry has tremendous growth potential due to the growth of the domestic infrastructure industry. We have built its reputation based on its business policy of “Service Oriented Manufacturing“ which is craved by: - Commitment to Quality. - Prompt response. - Technological solutions. - Constant up gradation. - Systems management - After sales service. - Customer delight. Our challenge is to meet widely range delivery demands of an equally demands of a diverse customer base coupled with constant up gradation of production equipment and techniques to keep pace with new market trends and applications.
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Helical Compression Spring Technology
Per Spring Manufacturers Institute Handbook of Spring Design.
we are leading manufacturing helical compression spring.
Wire dia - up to 90mm
Out side dia - up to 500mm
Free length - up to 3000mm
d wire diameter
I.D. Inside Diameter
O.D. Outside Diameter
D. Mean coil diameter = (O.D. + I.D.)/2 or O.D. - d
L. Free Length = The overall length of a spring in the unloaded position.
P Pitch = The distance from center to center of the wire in adjacent active coils. Recommended practice is to specify the number of active coils rather than pitch.
C Spring Index = D/d = ratio of mean coil diameter (D) to wire diameter (d). The preferred index range is 4 to 12. Springs with high indexes tangle and may require special packaging. Springs with indexes lower than 4 are difficult to form.
e. Squareness = Angular deviation between the axis of a compression spring and a normal to the plane of the ends. Squareness can be measured by standing a sample spring on end on a horizontal flat plate and bringing the spring against a straightedge at right angles to the plate. The spring is rotated to produce a maximum out-of-square dimension es. Normally squared and ground springs are square within 3º when measured in the free position.
e. Parallelism refers to the relationship of the ground ends, and is determined by placing a spring on a flat plate and measuring the maximum difference in free length around the spring circumference.
Baring Surface : To improve squareness and reduce buckling during operation, a bearing surface of at least 270º is required. Squared and ground springs are normally supplied with a bearing surface of 270º to 330º. Additional grinding results in thin sections.
