PD-55 4 1/4" Master Chuck Assembly
The 4 1/4" (I.D. master chuck is of an all welded, reinforced steel and tubing construction. The chuck is equipped with extra long chuck adaptor attachment lugs. Standard chuck adaptors are available in the following sizes:
- 1" (25.4 mm) I.D., 1 1/2" (38.1 mm) I.D.,
- 2" (50.8 mm) I.D., 2 1/2" ( 63.5 mm) I.D.,
- 3" (76.2 mm) I.D., 3 1/2" (88.9 mm) I.D.
- three channel post chuck adaptors for 1.2 to 1.5 lbs/ft, 2 to 2.75 lbs/ft and 3 to 4 lbs/ft posts.
