Sheldon Automatics

Sheldon 12" Shaper

Sebastian Geared Head Lathes

Sheldon CR Automatic Chucker

This Machine came with 9 automatic workstations, thus eliminating the need for a Second Operation Machine. The turret (pictured below) is mounted on a slide with 8 automatic stations, and combined with the Programmable Cross Slide. Made this Machine very completive with the Hardinge AHC, including the exactness, which Hardinge produced. Sheldon never made it as big as Hardinge, but produced quite remarkable machines, and should not be overlooked even to this day.

This Machine here indexed accurately within .000025 and the Slide error is limited to .0004 in a 6” Travel. Depth control was held .0002 or less.

8 Station Turret

This Turret was automatically indexed and locked by air on each return. stroke on the slide. (A) Adjustable Hydro Check Valve. (B) Is the adjustable “cushion” on the clamping action of the Turret. (C) This Counter bore was ground concentric to within .0002. (D) Positionable Micrometer Stop.

8 Station Turret Fully Tooled

Control Drum

The Drum is timed with the Turret and provides the desired programming for each Station. (A) Automatic Motor Speeds 195 – 2000. (B) #2 Slide or the Cross Slide can be utilized in any of the Turret Stations. (C) Dwell / Hold #2 Slide (D) Dwell / Hold #1 Slide. (E) Optional Feed #1 Slide (F) Station Feed Cams

Sheldon HCM

The HCM is a Super Precision Lathe, and came with Class 7 sealed spindle bearings, that provided a Maximum T.I.R.  of .0001. The Spindle has the 4” D-1 nose (shown with the collet Splash guard).

2 h.p. Drive with 8 spindle speeds from 400 – 3450 rpm

HCM Head

(A) Dial for the variable carriage feeds. (B) Instant Reversing Switch or Brake. (C) Push Light Control. (D) Spindle Air Cylinder lever with Warning Light 

Sheldon CM

The CM was produced as the “general purpose” Chucking Machine. Much like the Hardinge TFB, but with the Threading attachment. The Spindle sat on tapered roller bearings and had a maximum TIR of .0002. The Drive is 2 h.p.16 Speed Drive, 90 – 2000 rpm. Large Capacity Swing over bed 13 1/8”

CM Head

The gearbox provides 60 different threads that range from 4 – 240 T.P.I. and include pipe threads 7 ½, 11 ½, 27, & 30