Jet BD-920N - General Description of Components; Lathe Bed; Headstock Assembly

General Description
Lathe Bed
The lathe bed is made of high grade iron. By combining
high cheeks with strong cross ribs, a bed of low vibration
and rigidity is produced (Fig. 1) The two precision-
ground V-slideways, re-enforced by heat hardening and
grinding, are and accurate guide for the carriage and
tailstock. The main motor is mounted to the rear of the
bed. (Fig. 2)
Headstock
The headstock is cast from high grade, low vibration cast
iron It is bolted to the bed with four screws and uses
four adjusting screws for alignment. In the head, the
large main spindle is mounted on two precision taper
roller bearings. The hollow spindle is a Morse taper No
3 with a 25/32" bore. (Fig 3)
A quick change of the belt can be accomplished by
easing the tension on the idler (Fig 4)
To protect the machine against accidental damage, a
clutch is fitted to the reduction pulley at the 130 R.P.M
speed.