emco unimat sl lathe manual

emco unimat sl lathe manual

These wonderful little machines are now orphans since Emco discontinued support of accessories, parts and manuals. The uses of these machines are as unlimited as the skill and imagination of the operator given the wealth of accessories available. There is resurgent interest in the Unimat here in the U.S. and the secondary market reflects that, as prices for machines and accessories are on the rise. Machines are brought down from storage shelves, rescued from boxes in the basement, bought at flea markets, they trade hands on the Internet and are brought back to life as new generations discover the enjoyment their fathers found working with their hands. These machines have gone through some changes during the length of production, I will go over them briefly as they are documented on other sites. The machines have not changed in basic design or overall appearance. The early units in this production had a green metal cased motor with exposed brush access.The next change, that came sometime in the 70's, was the U-100 motor of gray plastic with an orange built-in slide switch, this motor was internally fan cooled and continuously rated ( probably their best motor ). In the final years of production the green steel cased motor returned and the hand wheels were now made of plastic. From what I have read, I believe over 400,000 units were produced. Please keep in mind that: these features overlapped in production cycles, I am not a Unimat expert, any Unimat information, additions or corrections that you would like to share I would gladly post here. The fellow I bought it from assured me they were easy to find, maybe forty years ago this was true. I tried O' rings. I tried belts. I made them. I bought them. I still wasn't happy with them. The belt is not glue bonded but rather, heat welded and is as strong as the belt material itself. The belts are sized not only for low and medium speed operation, but also to allow for the forces placed upon them at higher speeds.

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Although the material has a memory, the belts will stretch a little after 20 or 30 minutes of use. This material has a very high coefficient of friction and will not have a problem transmitting power for this application. Of all the elastometers available for power transmission, this material (polyurethane) is the best suited and most widely used. Use this E-mail address. These are acceptable tolerances. But, please be aware that with-in the twelve pages of this web-site there is a wealth of Unimat information. Take your time and surf all pages, some are very long. This year the number has sky rocketed. More damage is caused in transit to the Unimat than any other situation. The factory shipped these machines disassembled. The motor, motor bracket, tailstock, and handles were all in their own wrapping. This prevented these parts from damage. The lead screw is made of mild steel, when hand wheels are knocked in transit, the end of screw is bent causing the wheel to wobble. If you are purchasing a machine, request that the seller remove and pack these items separately. Other badges here The original model stayed in production until 1977, with a run of around 300,000 examples, at which point it was replaced by the Unimat 3, an entirely conventional-looking lathe and one not nearly as adaptable to so many different uses. Eventually to be distributed world-wide - with importers using a variety of badges on the headstock - the first known advertisement for what was to become known as the DB200 in the USA, and SL1000 in Europe, has been traced to page 60 in the October, 1954 issue of Model Railroader Magazine and placed by the original American importer Plasticast of Chicago, Illinois and Palo Alto, California. The crude pictures accompanying the text showed not the very first model, but the slightly modified Mk. 1a - now believed to have been the first true production version.

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It may be that an earlier model was advertised in 1953 - but a search by the writer's German contacts through hobby literature of that year has drawn a blank. However, with post-WW2 production difficulties and material shortages still hampering all industries, it's possible that this first type was never publicised at all, but just offered locally in Austria. The basic lathe retailed for ?27: 17: 6d - at the time around three times the average ?9: 5s: 0d weekly wage of a skilled tradesman. If one was wealthily enough to buy an entire outfit - though few in those days of post WW2 austerity were - it came to around ?49, a considerable sum and enough to purchase a Myford ML7. By 1956 USA distribution was in the hands of the American Edelstall Corporation, their first advertisement appearing in Model Railroader Magazine during September, 1956. Distribution then moved to an organisation called Emco-Lux, almost certainly a tie up between a long-established German-owned European tool distributor and Maier. Finally, with an expanding range of products, and a move into CNC machine tools, Maier grasped the nettle and brought the marketing and distribution in-house. This situation was mirrored in the UK where Maier undertook UK sales through a specially-established subsidiary, EME Equipment Ltd. However, as might be expected with such a popular little lathe, Sears Roebuck and Co.However, there are four known copies of the Unimat: the Rowic HM-175 from Argentine, one of an unknown name manufactured in Russia and the other (possibly) in East Germany. While the Rowic appears to have been so well made - and so similar to the original - that it may well have been manufactured using replicas of the proper factory dies, the other two, from countries under communist control at the time, were significantly different. One especially interesting Unimat-based lathe has also been found, a home-made version - seen here.

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Continued below: The crude pictures accompanying the text showed not the very first model, but the slightly modified Mk. 1a - now believed to have been the first true production version. It may be that an earlier model was advertised in 1953 - but a search by the writer's German contacts through hobby literature of that year has drawn a blank - hence this is likely to have been not just the first American, but the first ever advertisement for the Unimat Owners have seen this phenomena exhibited in a Unimat left in the vertical mode for many years where the hole in the base was so deformed that the column was no longer truly vertical. Could the change to the lighter, higher-aluminium content base have been due to this or, much more likely, cost savings. A central leadscrew was used to drive the carriage up and down the bed rails. Although at first the carriage had no form of lock, later models were given a clamp bolt at the rear that also acted as a form of adjustment to the sliding fit. The cross slide followed the same design and, just like the English Drummond Little Goliath of 25 years earlier, ran on two bars instead of conventional machined ways. The headstock could be swivelled on its mounting and, fastened to its end face (and so rotating with it), was an aluminium bracket that carried the motor and (on most versions) an additional speed-reduction pulley. By reversing the pulleys, and rearranging the belt runs, 11 speeds of approximately 900 to 7200 r.p.m. could be obtained. With its unique headstock design, ingenious drive system and clever accessory mountings, everything points to the lathe being designed from the outset as a multi-purpose machine that could be gradually equipped with a range of profitable extras. The aim had been to allow its use as a metal or wood lathe, miller, drill press, polisher, grinder, jig saw, saw bench, wood planer or jointer, sander or even - with the headstock detached from the bed and fitted with a grip - as a hand drill.

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The conversion process from one mode to another was generally well thought out - and simple to execute: for example, to complete the important alteration from turning to milling and drilling, the headstock, complete with its motor-drive system, was removed from the bed and remounted on an aluminium bracket carried on a 24.5-mm diameter steel bar that plugged into the hole formerly occupied by the headstock's mounting stud. As a note of interest there were at least two designs of vertical column and methods of locking them in place: the later type had a groove machined around the shaft with a blind hole, bevelled at its entrance, against which the locking bolt pushed. On earlier examples the hole was drilled though the shaft and a different type of locking bolt used. The first kind splined drive-bar used to move the cartridge was fitted with a very short, plain handle but later a black knob was added and finally the handle (retaining the ball), was lengthened. To excite the anoraks amongst us, some six variations on the handle have so far come to light. Although the exterior dimensions of the cartridge were one of the few things to remain unchanged throughout production, its contents did not. The first example used a crude system, similar to that employed in a bicycle hub, with crowded (loose) balls contained between cones with the single-groove drive pulley held in place (overhung, at the left-hand end of the cartridge) by an M12-1 nut, the adjustment of which was used to set the bearing pre-load. The outside face of the front cone was ground to an abutment flange for items screwed onto the spindle nose - although this arrangement may have caused problems with the bearing adjustment, with heavier interrupted cuts tending to tighten the cone and reduce clearances. As a point of interest, the spindle from this unit was also used in the Toolpost Grinder (part number VS2-460) that Emco offered for their larger V7, V8 and V10 lathes.

It is also possible that the lathes inspected may have been upgraded or modified - and it is entirely possible that some of the following conclusions are incorrect. Unimat Mk. 1a: the first production machines are very rare, and this model is the earliest known example on which research can be based. Despite being intended as a mass-production unit evidence from these specimens shows that, at first (no doubt because of the still-severe economic conditions at the time), the Emco factory would have had a limited number of automatic production machines and a good deal of hand-work went into each example. There is also an indication that little time or material was wasted with, for example, the castings having an indifferent cosmetic finish and wrongly spotted and partially-bored centres holes corrected - but with the initial damage to the component ignored. As it would have provided the easiest and most reliable route into production the first version (like nearly ever other amateur lathe of the time), had its base and other major castings in iron. Unique to the first one or two years of production the base's other main identifying features were its middle section, formed into a convex chip tray (with a flattish bottom), raised ridges running along the front and back walls and the boring of the casting at both ends to accept two solid-steel, 12-mm diameter bed bars each retained by a horizontal grub-screw. A pin, screwed in through the left-hand face of the casting, engaged against the cone, and drew the headstock down and locked it in place. Unfortunately there was no provision for aligning the headstock, other than fitting the tailstock ram with a centre and pushing it into the spindle hole - while simultaneously tightening the locking screw.

One feature found on some early models (the writer's own example being so equipped) was a tiny oil hole drilled vertically through the front wall of the carriage by which means the end of the cross-feed screw, where it passed through the casting, could be lubricated. It is likely that more than one kind of handwheel was fitted on the production line, with some being of a slightly different diameter to others. In comparison with later machines the drive pulleys exhibited several significant differences: they were thinner in section and of a much lighter, even delicate construction. Manufactured in fully-machined cast aluminium they had deep 'V' grooves and were mounted in the reverse direction and with the pair used on the motor and idler stud (at 49-mm), larger in diameter. The motor bracket, later a neat die-cast affair, was a rather rough aluminium casting with only the holes machined. From the start of production the motor bracket came with an idler pulley - but machines have been found without this fitting (possibly to ease the fitting of a particular accessory) and hence only 6 instead of 11 speeds. Constructed as a one piece casting, the first tailstock had a distinctive spindle-retaining nut, just inboard of the handwheel, and a very pronounced rearward cantilever (to maximize the machine's limited between-centres' capacity). Because of its construction, and the fact that the bed bars were socketed into the base casting, it was necessary to dismantle the entire lathe if the tailstock had to be removed. An examination of the castings used on early lathes show them to have an inferior finish to later ones, though no doubt their material quality was entirely satisfactory. The vertical pillar was 24.5 mm in diameter, 240 mm long and with an installed length of 200 mm. The hand-grip used to convert the headstock into a drill was quite rounded, perhaps a little smaller than the latter cast-iron production version--but much more comfortable to use.

Made in Holland (by Motoren Eindhoven ) the ball-bearing, 40 watts, 4000 r.p.m. brush motor resembled those used on contemporary sewing machines and was rated for intermittent use only. To check if a motor has plain bearings look for a small hole in the (protruding) bearing housing at each end. The hole leads to a felt washer that wicks just oil, less any dirt, into the sintered-bronze bearings. American machines all appear to have been delivered in a rather splendid fitted wooden box - while European customers, apart from those sold during the mid to late 1950s, had to be content with finest-quality cardboard. If you see a box for sale be aware that those for the very first models - the Mk. 1a at just over 12-inches long - were smaller than those for later machines. Most of the first boxes had nicely bevelled vertical corners, until at some point during SL1000 production, this was stopped, probably as an economy measure. Having established the lathe in production, Maier set about both improving production methods (which necessitated changes to the machine's construction), and ironing out some of the design deficiencies that were becoming apparent as owners began to explore the limits of its potential. Continued below: Some examples of this version have also been found with saddle and cross-slide locking screws (the latter with a small brass plug pushed against the right-hand cross-slide bar) but such fittings appear not to have been standard until at least the Mk. 2A. It may well be that some owners, frustrated by the absence of a carriage lock on their early machines, could have fitted their own - so it is impossible to be categorical on this point. The tailstock cantilever was reduced and the casting became a two-piece affair with the upper and lower sections clamped to the bed rails by a single Allen bolt. Although the 2 and 2A had a carriage lock (at the back) the cross slide generally did not - that improvement appearing as standard on the 2B.

The handwheels, now larger at 35-mm in diameter, were made slightly thinner and given a knurled rim and a locking nut on the end of their feedscrew, instead of through the wheel's boss. Again, with over-lapping production, it possible that these handwheels may have been seen first on the last examples of the previous type. Arranged by the simple and effective means of splitting the right-hand half of the casting from front to back, the cross-slide clamp used an M6 socket -headed screw set (positioned at the front between feed screw and the right-hand 8 mm-diameter cross slide bar) to squeeze the parts together. However, this was not the first type of lock and some earlier versions have been found with a cruder system where, on the right-hand side front of the casting, an 11-mm wide tapped boss was incorporated that took an M6 x 8 mm grub screw bearing directly onto the way bar. So as not to mark the bar, a small brass button was used on the end of the screw. Although the system worked well enough, it did not have the clamping power of the later type and would probably not have stood up well to the demands of heavier milling cuts. As a further confusion, some early machines of the Mk 2 and 2A type have been found with two locking screws on the cross slide, one at the front and another other at the back. Improvements were also made to the headstock, with the spindle being given a register flange and the 2-step pulley made reversible on its mounting - so providing an increase in the number of speeds. The 3-jaw chuck and the drill chuck delivered with this lathe were identical to the ones supplied earlier, with the ring-scroll portion of the 3-jaw (the part gripped to turn the scroll) being diamond knurled and drilled with 6 Tommy-bar holes. The entire body of the drill chuck was also given a distinctive (and effective) diamond-knurl finish.

Although some of the original illustrations were used, the robin's-egg blue paper and a different font, properly typeset and justified, made all the difference. Continued below: Upon first assembly the base casting and headstock were jigged and a small vertical slot cut across the junction of their front faces. The motor was the now-familiar larger plain-bearing Dutch unit, with the centre portion painted ether black or in a colour to match the rest of the machine. Several styles of handwheel were used, all turned from steel and plated silver or black. Some versions of this lathe have been found with two locking screws on the cross slide, one in the normal position nearer the front and the other in line with it further back. Realising that one 6 mm screw clamping the casting to the slide bar was entirely adequate, Emco did not persist with this modification. Unimats of this age were also given a more robust carriage assembly with the whole of the casting, including the front and back walls through which the way-bars passed, noticeably thickened. It is likely that only two motors were used on this model: the original Dutch-built brush-type and, towards the end of production, a larger induction. Type. By the late 1950s crackle-black finishes were being phased out and Emco followed fashion by producing the majority of the Mk. 3 lathes in a variety of finishes, amongst which silver-blue appears to have been predominant. The Instruction Book for the Mk. 3 is the more common 3rd Edition, composed and typed (probably) in England as an A4 sheet, reduced to A5 and printed in Salzburg, Austria. It had the long 12 mm Guide Bars (A2Z230010), the long T-bar Tool Rest (DB1201, later DB1202), a wood-drive centre (spur type DB1205) and a single-row ball-bearing rotating centre for the tailstock. (DB1200). The tailstock handwheel was black turned steel with a 'wasp-tail' handle.

The same catalogue also shows a unique tool block (DB1320) with two T-slots running front to back and a single clamp screw with a clamp piece. It was sold specifically for use on the 'W' and appears to have been offered in Europe only. It was designed to hold the small triangular tool rest (or other accessories) at the standard cross-slide height.However, it is known that silver-blue finished U90 motors were subsequently sold by American Edelstaal, and Canadian Edelstaal, as replacements for use on later green SL1000s and DB200s and so confusion on this point is a strong possibility. Early Mk. 4 lathes had blackened steel handwheels with wasp-tail handles, a red nameplate, the Dutch 95-Watt motor and a silver-blue hammer-finish paint. Versions made in the middle years of production can be recognised by the use of die-cast handwheels (still with wasp-tail handles) and a red-silver-red badge. The motor was a U90 type and the finish either a pale grey-green hammer effect, or plain grey. However, there was a degree of overlap between the machines, with even early-production examples found (though only rarely) with the early red nameplate, U90 motors and aluminium handwheels. The Mk. 4 was finished in a hammer-effect, pale grey-green and supplied with the lathe were two accessories that would become very familiar in years to come: a rather light faceplate and drive dog - both in die-cast aluminium. A recent discovery was a Mk. 4 purchased, according to its original owner, in 1960. This had a big, round-shaped induction motor with matching wrapper paint, a small red name plate mounted low down on the sloping face of the headstock, green paint and die-cast hand wheels with the wasp-tail handles. These new models were on sale in England by early 1965 and the USA a little later, in April 1965. However, it is more than likely that stocks of the older cast-iron machines had not been exhausted and the two models may have been available side by side for some time.

The change of material enabled the rate of production to be greatly increased and, by eliminating some machining operations (the finish of the castings was equal to a ground surface) costs reduced. The use of dies enabled the appearance of the base to be cleaned up somewhat and allowed an almost full-length, vertical flat face to be used. Unfortunately, this model was not well finished and lacked the delightful detailing of earlier machines: it had, for example, a number of surfaces that lacked accuracy and a headstock spindle sleeve with a turned rather than a ground-finish. Motors: In the 1950s and 1960s very few European countries used the same voltage for their domestic supplies and Emco had to supply a wide range of motors to cover every possibility - new examples of which are still being discovered. As an example of the confusion that reigned an original, unused lathe from 1961 has been found fitted with 125 watt 2800 rpm motor but accompanied by a 3rd edition Operator's Manual stating that a 65 Watt, 4000 rpm unit was fitted. (Machine Serial No. 260031 sold in 1961 for the Dutch market). Apart from the very first examples, American-market machines were fitted with motors of a different design and size to those in Europe (and possibly the rest of the world). However, before fitting a remotely mounted sewing-machine motor as a replacement it is worthwhile dismantling the faulty unit and checking to see if the delta capacitor (for commutator suppression) buried inside the motor casing behind the rear of the armature, is faulty. This unit contains three small capacitors within the single casing and it is not unknown for one to have short circuited to earth internally. If a physically similar replacement capacitor cannot be found an electrically compatible one - in the UK for example a Maplin Electronics Part No.

Motors were fitted with either plain bronze or ball bearings with, in general, those for Europe with voltages above 200, using ball races and most American-market U90s with plain bearings - though an exception was the first 40 Watt motor that used ball-races. The plain bearings were lubricated through wicks, and it's important not to take these out and squirt oil in directly - doing so will wreck the motor. If the felts have dried out remove them and soak in thin oil for a couple of days - that usually gets them working again; alternatively, fashion new felts from material easily available from dress-making shops. The ball races are grease lubricated - using oil will wash the grease out and foul up the inside of the motor, again promoting failure. If the motor is stripped, just a trace of grease on the bearings is sufficient - and, whilst it's down, check to see if the bearings are loose in their housings; if they are, secure them with a low-strength grade of Loctite. If you are unsure which bearings your motor has, examine the end of the shaft, it's sometimes possible to see the bronze ring of the plain-bearing type. The ER type are measured at a defined distance below the extraction groove on the 8-degree (16 Degrees included angle). Schaublin now makes an ESX-16 collet set that is compliant with the DIN standard. How long-lived and reliable is a Unimat. In April 2006 the writer met a model engineer who had been given one as a present for his 21 st birthday some 40 years previously. Although it had been in regular use, it still retained its first motor (he had been careful not to exceed the time-limited running) and even one drive belt was original. Nothing had broken or worn out and he was entirely delighted with it. Of course, collectors have moved into the market and very early black-finish machines - and most of the accessories from any year - are very sought after and command high prices.

Discover everything Scribd has to offer, including books and audiobooks from major publishers. Start Free Trial Cancel anytime. Emco Unimat SL and DB Manual (English) Uploaded by kriskee13 100 (22) 100 found this document useful (22 votes) 21K views 61 pages Document Information click to expand document information Description: This wasn't easy to find. Report this Document Download Now Save Save Emco Unimat SL and DB Manual (English) For Later 100 (22) 100 found this document useful (22 votes) 21K views 61 pages Emco Unimat SL and DB Manual (English) Uploaded by kriskee13 Description: This wasn't easy to find. Full description Save Save Emco Unimat SL and DB Manual (English) For Later 100 100 found this document useful, Mark this document as useful 0 0 found this document not useful, Mark this document as not useful Embed Share Print Download Now Jump to Page You are on page 1 of 61 Search inside document Browse Books Site Directory Site Language: English Change Language English Change Language. Never Owned ” The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. Never Owned ”. Buy and Download Description Parts and instruction manual for the Emco Unimat 3 lathe. Add to Wish List Thursday, April 23rd - to add the JOHN - Wednesday, April 29th your Bobcat S250, S300 SUPPLIES AND INVENTORY!. Unimat 3 Manual Unimat 3 Manual PDF. Unimat 3 Manual download. Number of Pages: 55. Description. Spare Parts List. Contents: Technical Data. Here you can find documentation for the Unimat DB200, Unimat SL1000, and Unimat 3. Unimat 3 Manual. It's stamped in the Manual, 30 pages. Unimat SL. Add to Wish List Thursday, April 23rd - to add the JOHN do immediate repair to 9: OF EQUIPMENT BUILDING Skid Steer Loader.

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