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13″ x 30″ Dean Smith & Grace With its patented “Fastlock” nose the headstock spindle of the 13-inch was bored to clear bar up to 1.5″ in diameter and ran on either precision Timken taper roller or plain bearings – in the latter case the front bearing was 3.5 inches in diameter and 4 inches long – with a mid-point bearing to add stiffness. A 5 h.p. motor gave twelve speeds, through multi V-belts (a flat belt was optional), from either 16.8 to 750 rpm or 22.5 to 1000 rpm. The roller-bearing spindle model was available with a single speed range of 31 to 1400 rpm.

Machinist Life
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