Roller Height Differences along Length of Bed?

I’m still running into problems on my No.3 with respect to roller height and I haven’t seen anyone else having this issue. I’m using a type-high gauge (from NA Graphics) on top of a cold-rolled steel 18-gauge plate. I set the proper roller height where the start of my Boxcar Base would be, then roll toward the end of the base and the rollers are too high, not even touching the gauge!

I’ve checked and re-checked everything I can think of (I have brand new rollers from NA, btw, so that can’t be the issue):

  • Bearing bars are steel, block numbers match and oil holes face up and outward (one broken Nyliner is missing that I have to replace)
  • Adjusting screws and holes are cleaned up; they looked good but used a tap and die to make sure the threads were okay
  • Roller frame appears okay and even
  • Thought the steel plate might be bowing slightly from one end to the other, so placed the Boxcar base on top to weigh it down but same results

I don’t have a galley height gauge, which I’m trying to avoid having to buy as my credit card still hurts from the new roller purchase. The only thing I can think of to (hopefully) solve the problem is to build up under the steel plate at the low end with some packing until it reaches the proper roller height.

Anyone have a better idea or is that the best option?

 

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Paul Moxon, Moderator
Admin
9 years ago

It should also be noted that this is an old style No.3, which unlike later No.3s does not have form roller frame support bearings.

Paul Moxon, Moderator
Admin
9 years ago

What Denise did not say is that she had also adjusted the carriage bearings, based on my advice. However, she did a blind impression test and is satisfied with the results.

Denise, could you post a side view photo of the bottom frame inking assembly and the cylinder rack? (There is no separate form roller rack on the No.3.)

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