IF YOU HAVE A USED MACHINE YOU WOULD LIKE TO SELL, PLEASE CONTACT US. Final alignment can be made with a few blows in the right direction from a hide-faced mallet before tightening the four Allen screws fully and evenly. Although efficient, the twin V-belt drive can cause problems and, should the geared headstock on any V-belt drive Colchester make a knocking, rattling or rumbling sound, the cause may not be worn gears or bearings but unequal-length drive belts "fighting" each other. As was often the case with Colchester lathes, a copy of the Mk.1 was made in Taiwan and branded B.I.E. Two 300-foot long moving-floors were used, together with a system of "flow-line" production based on automotive practice that aimed to achieve a consistently high standard of quality to "American toolroom limits of accuracy".

Fitting new V-belts can often make a significant different to how smoothly a machine tool runs.The range of spindle speeds differed slightly according to the year of manufacture.
2 designations) refer, in effect, to the centre height and bed length - the Student being 6" x 24" and the Master 6.5" x 36" - for, in all other respects, the lathes were identical (in reality, most Student lathes appear to have been built with a 6.5-inch centre height - so beware if buying a replacement tailstock).

although Chipmaster or early Bantams have the number on a small disc. If you have a sample with which to make ca omparison, all is well, but it is very easy to believe that the fitting either side of the one you need is correct.

To check, try running on one belt to see if the headstock runs more smoothly; if it does, fit a second belt, run a chalk line across the two, start the machine for a few seconds and check that the belts are still in line; it's almost certain that they will not. On this model the normal "plug-in" electrical control panel on the front of the stand was replaced by a line of four switches and a stop button immediately beneath the front edge of the chip tray. For general and readily available parts, to enable us to more readily assess your requirements we generally require the following: which should be stamped at the tailstock end of the machine, on ground bedway, for most machines.

The 8-inch 3-jaw chucks commonly fitted to these lathes when new were high-quality ones, with an integral backplate, made by in the UK by Burnerd.

A small pre-load was applied to the bearings by spring pressure - that immediately behind the spindle nose being a double-row type with a single-row at the rear.

Used Lathes for sale ready for in person and online inspection. 1 and Mk.

Today these special chucks are no longer available, but new standard ones can be fitted to a separate backplate - however, don't be tempted to use a cheap, unbranded import; the stresses encountered on top speed when holding large job are considerable. 3-phase motor, though it's possible that some machines, sold to schools, might have been fitted with a 1.5 h.p.

Two-speed motors were a costly and hence infrequently fitted option, but gave sixteen speeds from 34 to 1500 rpm or even, on some very rare, special-order models, 17 to 750 rpm.Another (rarely-encountered drive configuration) drive used a two-speed Brook Compton motor and an electrically-actuated disc brake. when they made a Drummond-like 3.5-inch lathe.

Clausing Colchester Engine Lathe 15"/23" x 50" $17,500 Model 8043. This was a very well designed, easily adjusted and reliable device - and one that should still be working perfectly when any lathe fitted with it is otherwise worn out. Machines produced immediately prior to the 1950s Student and Master usually had a rather slow range, from 20 to 550 r.p.m., with the new models much faster at 52 to 1000 r.p.m. Huge stocklist of spares for Colchester lathes and more. 3 Morse-taper headstock spindle (bushed down to No. However, one unvarying feature was that, on gap-bed lathes, the carriage-traverse handwheel was positioned on the right-hand side of the apron and on straight-bed machines it was always to the left.
Although the model names may have been old these new machines represented a quantum advance for the firm and were assembled in what was to become Europe's largest plant devoted to the manufacture of lathes. HeadstockThe 1.5" bore No. Instead, you are welcome to email for details of quality replacements that we can recommend.The forged, high-tensile steel 1.5-inch (38 mm) bore spindle ran in Gamet "One-micron Precision" bearings - Gamet being a separate company within the controlling 600 Group who also supplied many other machine-tool makers.

1, the "flat-top headstock" Mk.

However, like all production processes, and despite the new factory and much fresh equipment, hidden factors contrived to make some lathes more accurate than others, a fact that the Company turned to advantage by choosing the best machines from each production batch and offering them (with black micrometer dials) as machines to improved "toolroom" standards of accuracy. This machine incorporates a spindle speed …

The lathe was stopped by returning the lever to its central position and then pressed down further to operate what was, when the lathe was new, a powerful drum brake built into the headstock input pulley - though Colchester's assertion that this stopped the spindle "instantaneously" revealed that the handbook writer had either not used the lathe - or a dictionary.

An accurate test bar will needed (it fits directly into the headstock spindle), together with a high-quality DTI used to assess the alignment. Please don't send them to the scrap yard!

1 Bantam. We offer spare parts for the lathes once manufactured by the Colchester Lathe Company Ltd which ceased trading in Colchester in 1992. If your Colchester shows signs of slowing down or even "seizing up" after a few minutes running, the brake assembly is the first place to look. This Colchester Tornado 200 Lathe was manufactured in the year 1995.

Small oil leaks from the headstock are almost a feature of these lathes and, providing the oil is kept topped up, should result in no harm; the time to worry is when the oil stops coming out - the reservoir will be empty.

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