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Tramming a Bridgeport Mill by Tom Davis
- Thread starter HMF
- Start date
- Joined
- Sep 23, 2010
- Messages
- 7
Well, there are different ways to skin the cat.
I use a homemade holder for the dial indicator and a 9 inch outer race from a ball bearing.
The indicator foot goes on the surface of the bearing race. This keeps you off the table grooves and the race is dead flat.
With the pics I show me doing something different that tramming the table, but to tram the table the indicator foot is on top of the race.
pg
Here is what I sometime use and is what is in place on the bearing race pic.
This is a Noga 'Nogaflex' and sells for around $60. No deflection at all. Zero.
pg
I use a homemade holder for the dial indicator and a 9 inch outer race from a ball bearing.
The indicator foot goes on the surface of the bearing race. This keeps you off the table grooves and the race is dead flat.
With the pics I show me doing something different that tramming the table, but to tram the table the indicator foot is on top of the race.
pg
Here is what I sometime use and is what is in place on the bearing race pic.
This is a Noga 'Nogaflex' and sells for around $60. No deflection at all. Zero.
pg
- Joined
- May 4, 2019
- Messages
- 817
The reason I use the big mushroom contact tip on my indicator is that it doesn't hang up in the
T-slots.
T-slots.
- Joined
- Dec 9, 2021
- Messages
- 738
I use a new brake disc that ended up surplus.