Hi, might be a silly question but I can't get my head around how

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(Daithí Ó Corráin) #1

Hi, might be a silly question but I can’t get my head around how the pair of spherical bearings in the XY blocks works - I can understand if there is a single spherical bearing it will compensate for minor misalignment but if there is two (even close to each other) it will force the rod to pass through perfectly straight?