Introduced in the Summer of 2001 the latest (Mk. 3) version of the Super 7 lathe has a spindle able to pass a 1-inch diameter bar, a M42.5 x 2mm pitch nose and a 4 Morse taper socket. Welcomed as a long-overdue development of this classic lathe the greater convenience of the larger and stiffer spindle with its bigger bearings, the ability to carry a 5-inch diameter chuck and the increased mass of the headstock casting all contribute to a markedly-improved ability to remove metal. Another significant and important change was made to the countershaft unit - the 2-step motor-to-countershaft belt and pulleys were changed to a Poly-V type allowing much smoother running on top speed and extended belt life. However, the drive from the countershaft swing-head to the spindle remained as before - a standard V belt that could be expected to give years of reliable service. To improve the feel of the cross-feed when using hand feed a needle roller thrust bearing was fitted to the cross-slide end bracket. The opportunity was taken to improve the security and safety of the changewheel and countershaft belt guards - the inner and outer out sections were made much thicker than before and fitted with positive-action 1/4-turn catches to replace the rather weak spring-held closures that could easily be knocked open by a light blow in the right direction. Fitted with numerous extras as standard the latest version of the Super 7 Plus is the "Connoisseur". This features an inverter-controlled variable-speed drive from 26 to 3000 r.p.m. , spindle clutch, screwcutting gearbox, hardened bed, spindle indexing (by use of the backgear bullwheel), Poly-V drive to the headstock spindle and ready-mounted on the new-type industrial stand.
The large-bore spindle and heavier changewheels guard cover are clearly evident
To take advantage of the improved clearance through the spindle a 5-inch diameter chuck is now fitted as standard.
Used on a billion washing machines world wide, the Poly-V drive system is a well-proven and reliable design.
The spindle-drive belt guard is of heavier construction and altered profile.
V-belt drive to the spindle on this early Big-bore Super 7. The latest "Connoisseur" model uses a Poly-V belt to drive the spindle.