Bal Spring™ canted coil springs

The solutions we develop begin with our proven Bal Spring™ canted coil spring technology. In electrical conducting and EMI shielding applications, the spring’s individual coils provide multipoint contact, and they compensate for mating surface irregularities and misalignment. As a contact component, our spring offers superior conductivity and power density. It runs cooler than other contact technologies, and it is also self-cleaning. Since it’s capable of performing both mechanical and electrical functions, the Bal Spring eliminates unnecessary components and can help reduce system weight. Its highly customizable design also allows for precise control of insertion and breakaway forces. As a stand-alone solution, the Bal Spring is ideal for use in applications that require latching/locking, holding, centering, conducting, EMI/RFI shielding, grounding, or tolerance compensation. Choose your desired application from the list below:

Electrical

Mechanical

EMI Shielding

 

Spring sizes and specifications

View the Spring Sizing Chart

50 mm (ID) Spring Series Coil Width (mm) Coil Height (mm) Wire Diameter (mm) Inside Diameter (mm) Typical Number of Coils Continuous Current (A) Short Circuit Current (kA/3s)
105 3.28 2.77 0.406 50.0 190 1200 10.4
106 4.42 4.11 0.508 50.0 140 1500 11.6
107 5.94 5.46 0.787 50.0 100 2000 20.7
108 8.76 8.26 1.040 50.0 80 2500 26.8
109 12.70 10.50 1.500 50.0 55 2900 36.7
1010 17.40 15.20 1.830 50.0 50 3600 51.7
1011 19.30 16.70 2.080 50.0 45 3900 65.4

 

 

70 mm (ID) Spring Series Coil Width (mm) Coil Height (mm) Wire Diameter (mm) Inside Diameter (mm) Typical Number of Coils Continuous Current (A) Short Circuit Current (kA/3s)
105 3.28 2.77 0.406 70.0 260 1600 14.3
106 4.42 4.11 0.508 70.0 190 2000 16.0
107 5.94 5.46 0.787 70.0 140 2700 28.2
108 8.76 8.26 1.040 70.0 105 3200 36.2
109 12.70 10.50 1.500 70.0 70 3600 48.7
1010 17.40 15.20 1.830 70.0 65 4400 67.6
1011 19.30 16.70 2.080 70.0 60 4800 84.7

 

 

90 mm (ID) Spring Series Coil Width (mm) Coil Height (mm) Wire Diameter (mm) Inside Diameter (mm) Typical Number of Coils Continuous Current (A) Short Circuit Current (kA/3s)
105 3.28 2.77 0.406 90.0 330 2000 18.3
106 4.42 4.11 0.508 90.0 240 2400 20.3
107 5.94 5.46 0.787 90.0 175 3300 35.6
108 8.76 8.26 1.040 90.0 130 3900 45.2
109 12.70 10.50 1.500 90.0 85 4400 60.7
1010 17.40 15.20 1.830 90.0 80 5200 83.6
1011 19.30 16.70 2.080 90.0 75 5700 105.0

Information is based on sliver-plated BSE 11 material at predefined conditions. Values presented are calculated estimates. Actual values will vary depending on specific applications.