Miata differential bushing dimensions
#1
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I am at work so I apologize if this is easily searched topic but I am on my phone. Does anyone have the dimensions for a miata diff carrier bushing? I wrote it down when I had it out but have misplaced it and would like to make some up out of delrin today if possible. If someone could measure one with some calipers even just the thru bolt and outer diameter would be great.
#15
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Materials, not so much. (Some materials do require a temperature controlled environment, etc etc) If the material can be machined it can have whatever tolerance you want. Different manufacturing processes, that will affect tolerance.
Tolerances will increase or decrease your cost. Let's say you're calling a super tight tolerance +/-.002" but in reality that feature only needs +/-.030" without affecting fit/function. Whatever material that didn't meet tolerance, majority of machinist will charge you for it.
A print is a instruction manual for machinist, they necessarily don't know where that part is going, how it interacts with other components, unless you give them your diff
Tolerances will increase or decrease your cost. Let's say you're calling a super tight tolerance +/-.002" but in reality that feature only needs +/-.030" without affecting fit/function. Whatever material that didn't meet tolerance, majority of machinist will charge you for it.
A print is a instruction manual for machinist, they necessarily don't know where that part is going, how it interacts with other components, unless you give them your diff
#16
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In this case it matters. The bushing is pressed into the carrier. Assume that 83.40mm diameter is the dimension of the differential carrier hole that the bushing is pressed into. A rubber bushing may be able to tolerate +0.005" -0, whereas a delrin bushing may only be able to tolerate +0.0005" -0, etc.
Tolerances have to make sense both for the manufacturer and the part application.
Tolerances have to make sense both for the manufacturer and the part application.
#20
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there's only one face which is needed to be controled - ∅66,10. it has 0.1mm for a press fit. other are basically free dimensions. And Oscar is right - there is 2mm wide chamfer, not two chamfers.
i have not measured it - just made a drawing out of a cad model which was uploaded in here earlier.
i' ve done two bushings for myself out of hdpe according to this drawing - works well, fitting was kinda tight into the diff bushing holes.
i have not measured it - just made a drawing out of a cad model which was uploaded in here earlier.
i' ve done two bushings for myself out of hdpe according to this drawing - works well, fitting was kinda tight into the diff bushing holes.