Harrison is the British center lathe specialist with over 110 years manufacturing experience, part of the UK’s largest machine tool company and over 140,000 lathes are in operation worldwide.

£1,995.00 or Best Offer Sold Seller: (199) 100%, Location: Doncaster, Ships to: Free Local Pickup, Item: 70 FOR SALE HARRISON M250 ENGINEERING LATHE - EX SCHOOL MACHINE - EXCELLENT CONDITION - READY FOR WORK - HERE I HAVE A GREAT EXAMPLE OF A SUPERIOR BRITISH BUILD QUALITY FACTORY STANDARD LATHE, BUILT TO LAST AND MADE FOR WORK. Here is some spec info on the machine: Now out of production, the M250 of 145 mm (5.7') centre height was designed to appeal to schools, training establishments, repair shops and those needing a strong, properly-built but compact lathe for light production work.

Never as popular in the educational market as the more robust M300, as a second-hand machine it has enormous appeal to the more enthusiastic home user and hence demand usually outstrips supply with consequently high prices - but of course an excellent investment potential and an easy resale. It was available with a choice of either 500 mm or 750 mm (20' or 30') between-centres and had an induction-hardened bed as standard - but lacked the option of a detachable gap; interestingly, the width of the bed, at 190 mm over the ways, was greater than the centre height, a design feature that many years ago would only have been considered necessary for a lathe built to 'toolroom' standards. Early models had 9 speeds from 40 to 1500 rpm (or, optionally, 80 to 3000) whilst the later (1998 on, approximately) M250 ran from 52 to 2000 rpm - the electric motor used on the slower model was 0.9 kW, with a 1.3 kW employed to drive the two faster machines. Fitted with a hardened and ground No. 3 D1 Camlock nose, the 35 mm (1.3') bore spindle ran in Gamet Super-precision bearings with the hardened headstock gears lubricated by oil splash. On post 1989 machines the headstock had the same spindle nose as used in the Colchester Bantam Mk.

4. Baixar livro eclipse em portugues pdf. 5 Morse taper into which fitted a hardened adapter sleeve to take it down to 3 Morse. The handbook and catalogue both contain incorrect information about this fitting stating, variously, 4 Morse and 5 Morse for the spindle bore. Some lathes have been found fitted with a useful spindle brake - an option not mentioned in all catalogues. Available to cut either metric or English pitches, the screwcutting gearbox was available (at some considerable cost) with sets of conversion changewheels to change either to the other. The two standard gearboxes - that give either 33 inch pitches from 3 to 72 T.P.I. Or 33 metric pitches from 0.25 to 8 mm - were fitted with an oil supply circulated by splash from the lower gears dipping into the lubricant and flinging it around. Fitted with European Safety-Neurosis, full-circle smooth-faced handwheels, the carriage could be driven by either a fully guarded, 25 mm diameter leadscrew (in 6 mm or 4 t.p.i.