Customized version of http://www.thingiverse.com/thing:125529

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=125529

Using the following options:

bearingOffset = 30
RodDiameter = 10
showRod = 0
CompressionBoltDiameter = 9
GapTolerance = 0.96
CompressionBoltHeadDiameter = 20
MountHeight = 20
Pitch = 10
BearingHeight = 7
BearingDia = 23
CompressionNutDiameter = 15
BearingRaceOffset = 0.15
BearingInnerDiameter = 8
BaseBoltDiamter = 9
BaseNutDiameter = 15