'Driveline' silicone tubing and balls, for constant velocity couplings (universal joints)
click here for construction and assembly notes (also available as a pdf)
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Example of 0.8mm square and 0.8mm round shafts coupled with 1mm o.d. 0.5mm i.d. 0.25mm wall thickness tubing with a 1mm ball
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Shaft diameter: |
Tubing size |
Recommended ball size: |
Overall diameter |
Bore diameter |
Wall thickness |
2mm or 3/32" |
3.5mm |
1.5mm |
1.0mm |
3mm (or 1/8") |
1.5mm or 1/16" |
3mm |
1.0mm |
1.0mm |
2mm or 3/32" |
1.5mm or 1/16" |
2mm |
1.0mm |
0.5mm | | extra flexible thin wall |
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2mm or 3/32" |
1.0mm or 0.8mm (1/32") |
1.5mm |
0.5mm |
0.5mm |
1.5mm or 1.0mm |
1.0mm or 0.8mm (1/32") |
1.0mm |
0.5mm |
0.25mm | | extra flexible thin wall |
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1.5mm or 1.0mm |
Balls, stainless steel: available in the following diameters: 1.0mm, 1.5mm, 2.0mm, 3/32", 3mm.
Balls, delrin: available in 2mm diameter.
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