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PULTRA Lathes - Early P Type
and Associated Models

Pultra Home Page  Early Pultra "P" Models  Model 17/50 Photo Essay

Pultra Lathe Drive Systems   Pultra Slide Rests  Pultra Grinding/Milling Spindle 

Unlisted Pultra Models   Pultra 15/90 Lathe   Pultra Accessories   Pultra Vertical Slides
 
Women's Work on the Pultra Lathe  Pultra Watchmakers' "Geneva-type" Model 8 and 10 Lathes
 
Pultra WW-Type Watchmaker's Lathe   Pultra Grinders   
   
Pultra 17/70 Capstan Lathe

A full Pultra Data Pack and Catalogues are available

Of  50 mm centre height, the Model P was available in two bed lengths - the short PB1 and the longer "twin-support" PB2. Two headstocks were offered; the 8 mm collet PH2 and the 10 mm collet PH4 both able to take either draw-in or quick-action, lever-operated collet closers. The headstocks were fitted with split bronze bearings were designed for continuous running at 10,000 rpm - their ability to do this reliably being advertised by testimonials from satisfied custom The bearings had plain bores with a taper on the outside by which means a precise adjustment of the clearance could be made. A ball race was provided to take end thrust. The bearings were intended to run "warm" at all speeds with the makers suggesting that, if a machine was to be used continuously at high or low speeds, it would be worth adjusting the bearing clearance to suit. When the bearings were well used it was possible to dismantle them and remove a laminated shim (0.003") to reset the adjustment range.
The tailstock on the "P" was normally supplied with a simple "push-action" barrel but a lever-operated device was an option and a screw-feed barrel was eventually listed as well..

Short-bed Model CZ45 (8 mm collet) and CX45 (10 mm collet) - with screw-feed compound slide rest and rear toolpost (PM5) , draw-in collet closer and a plain, push-action tailstock barrel.

A rare survivor - a short-bed Model

Long-bed Model EY45 (8 mm collet) and EU45 (10 mm collet).

Set up for production work this Pultra Model FZ38 (8 mm collet) and FX38 (10 mm collet) was equipped with lever feed to all movements to speed up repetition work.

Short bed Model BZ38 (8 mm collet) and BX42 (10 mm collet) with lever collet closer, lever-operated compound slide rest with a rear tool post. This specification was suggested for "second-operation" use when finishing small components.

Headstock with quick-action lever-operated collet

Tailstock with lever-feed barrel.

Most machine tools made during World War 2 on Government contracts were produced without cosmetic adornment - but with the makers protecting their reputations by labelling them "War Finish". Even so, Pultra still managed to fit a rather fine bronze badge to the tailstock-end bed foot…..


A full Pultra Data Pack and Catalogues are available

Pultra Home Page
 
Early Pultra "P" Models
 
Model 17/50 Photo Essay
 
Pultra Lathe Drive Systems
   
Pultra Slide Rests
 
Pultra Grinding/Milling Spindle
   
Unlisted Pultra Models
   
Pultra 15/90 Lathe
   
Pultra Accessories
   
Pultra Vertical Slides
   
Women's Work on the Pultra Lathe
 
Watchmakers' "Geneva-type" Lathes
 
Pultra WW-Type Watchmaker's Lathe
   
Pultra Grinders
     
Pultra 17/70 Capstan Lathe

PULTRA Lathes - Early Models
E-MAIL   tony@lathes.co.uk
lathes.co.uk Home Page    Machine Tool Archive    Machine Tools For Sale & Wanted   
Machine Tool Manuals   Machine Tool Catalogues   Belts