A little project for my son. This is a creep cylinder for his Clark forklift. Exactly what it does I'm not sure, it's part of the clutch/brake system. The original cylinder cracked and was leaking. A replacement part was not available. So I built one.
I did this on my manual lathe, major diameter is 1.875'', smallest diameter is 1.375, bore is 1.125 x 3.95 deep. Material is 1018 cold rolled. I didn't get any in-process pictures, but it's just simple turning.
But I found one more feature that I did not see when I made the drawing. 4 holes, 90° apart.... 0.032 diameter drilled through the wall.
Had to order some drill bits. 0.8mm (0.035'') Picked up some solid carbide circuit board drills from Amazon.
I just used the flat on the part to clock the 4 holes. I could have dialed it in, or used the rotary table, but the positioning is not that critical.
I used my Albrecht sensitive chuck in a 1/2'' collet
Took about 30 seconds to drill each hole. Manually peck drilling with coolant mist. About 3500 RPM.
Then mill the slots in the end. Find center with the Blake. Set up on the flat to clock the slots properly.
And done