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      • .236 to .394
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    • AI Springs >
      • AI .187 to .950
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    • SP Belleville Springs >
      • SP .197 to .945
      • SP 1.142 to 3.031
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SERIES SP BELLEVILLE SPRINGS

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For Heavy Bolted Sections

• ​Electrical Applications
• Bus Bar Joints
• Transformers
• Automotive
• Farm Implements
Series SP Belleville Springs for Heavy Bolted Sections
Diameter in Inches 'D'
​SP Belleville Springs .197 to .945
​SP Belleville Springs 1.142 to 3.031

This series of Belleville springs has been specifically designed for heavy bolted sections such as those used in electrical industries - on bus bar applications, transformers, etc. They are widely used to compensate for bolted sections. These conical spring washers are not as accurately formed as our AI series, which are generally used for lighter loads and more predictable load/deflection characteristics. SP Belleville Springs are made of high-quality spring steel, heat treated to Rockwell 43-50, and are available with mechanical zinc plating.
Picture
Typical application
Important Note: SP Series Belleville Springs are not pre-stressed. They are designed for static bolted applications only. Consult factory for other uses.
Disc Springs may be used singly or in combinations
Our Belleville Springs are warranted for a period of one year from initial delivery to be free of material defects and or faulty workmanship. The limit of our liability in all cases is the free replacement of defective parts to be supplied as required. Bulk package FOB Factory. In no case are claims for consequential damages permitted since we cannot control misapplication of our springs or their use in inappropriate environments. AI pre-stressed disc springs are used to maintain load or tension in bolted assemblies. Pressure begins at the outer radius and flattens gradually toward the bolt as deflection progresses. Disc springs exert a uniform pressure that remains constant despite tension losses caused by thermal expansion and contraction, compression set or wear of parts. Because pressures are predictable, disc springs provide a simple and effective means of determining bolt tension that is far more accurate than "torque" readings.

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FAN DISC CORPORATION
​8127 Clybourn Avenue
Sun Valley CA 91352
Tel (818) 767-1886
Fax (818) 767-7415
​www.fandisc.com
info@fandisc.com
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  • Home
  • Spring Selection
    • Precision Belleville Springs >
      • .236 to .394
      • .472 to .492
      • .551 to .591
      • .630 to .709
      • .787 to .886
      • .906 to .984
      • 1.100
      • 1.240 to 1.340
      • 1.400 to 1.770
      • 1.970
      • 2.200 to 2.360
      • 2.480 to 2.800
      • 3.150 to 3.540
      • 3.940 to 4.410
      • 4.920
      • 5.510 to 7.090
      • 7.870
      • 8.860 to 9.840
    • AI Springs >
      • AI .187 to .950
      • AI 1.000 to 1.750
      • AI 2.000 to 2.500
    • SP Belleville Springs >
      • SP .197 to .945
      • SP 1.142 to 3.031
    • CONTACT Disc Springs >
      • CONTACT Narrow
      • CONTACT Regular
      • CONTACT Wide
    • K Disc Springs >
      • Metric for K
      • Inch for K
    • FL Disc Springs >
      • Metric for FL
      • Inch for FL
  • Special Springs
  • Spring Design
    • Tolerances >
      • for Thickness
      • Overall Height
      • Hardness Range
      • OD + ID Guide Clearance
      • OD + ID Tolerance
      • Load Tolerance
    • Load Calculations >
      • Nomenclature
      • Load in Lbs
      • True Radius Factor
      • Corner Radius Factor
      • True Cone Height Factor
      • Flattening at Edge Factor
      • Precise Load Computing
    • About >
      • Contact Us
      • News Releases >
        • Fan Disc Second Patent
        • JPL Selects Fan Disc
        • Fan Disc Wins Patent
    • Load and Stress Calculations
    • Dynamic Loading
    • Materials Properties
    • Tightening Torque Values
    • Typical Disc Spring Apps
  • Site Map