Sealey and Nutools Vertical Milling
& Drilling Machine
Typical of the generic Taiwanese "Mill/Drill" as made from the early 1970s, the ones badged as Sealey and Naerok had nothing unusual about them - other than the use of metal instead of plastic handles together with the general usefulness and low price of the type. Lacking the bevel-gear driven elevation to the head that maintained alignment throughout the lift (as found for example on the superior Naerok and Draper versions) the head on both was lifted by a crank handle whose gear ran directly against a rack free to rotate between its top and bottom holders--the result being that once unclamped and moved up or down, the head was free to swing around the column and so lose its alignment. Although this might seem to be a fault, in reality, it hardly matters as the long quill travel is, more often than not, sufficient to complete jobs without the need to elevate or lower the head.
In addition to the elevating head, the quill, which held a No. 3 Morse taper spindle, could be moved by either a handwheel fine-feed control (working through worm-and-wheel gearing with each division on the micrometer dial being 0.025 mm) or by a 3-spoke, quick-action capstan handle. Power came from a rear-mounted motor, usually of 0.75 h.p. or 1 h.p. running at 1400 r.p.m., with drive by an "A" section V-belt to an intermediate, self-aligning, 4-step jockey pulley. From there another "A" section V-belt turned the 4-step front pulley - the arrangement giving a very useful range of twelve speeds that spanned 90 to 2150 r.p.m. on the Nutools and 200 to 2500 r.p.m. on the Sealey (though this range can vary).
Although inexpensive, of relatively crude construction and with a less-than-perfect cosmetic finish, this type of vertical miller and co-ordinate drilling machine is a most useful addition to any workshop, especially if you are playing with the repair of motorcycles and cars. Able to mill to tolerable accuracy with either large or small cutters, it becomes especially handy when used as a coordinate drill, the spindle speeds being both high and low enough to cope with drill bits of small and large diameter - 1/4" into free-cutting steel, for example, needing around 2,300 r.p.m. and one of 1.5" about 357 r.p.m. With a vice bolted securely to the table, the slides can be manoeuvred easily - to bring the workpiece exactly into place - and then locked.
The writer has a similar model in his odd-job workshop and would not, under any circumstances, be without it..