Colchester Multiturn 5000

At 660 mm (26.0 in) of swing and up to 6,000 mm (236.2 in) between centres, the Colchester Multiturn 5000 is a heavy flat-bed CNC lathe for oil-country, marine and general heavy-engineering turning. Its spindle is rated 17 kW (22.8 hp). Chucks are listed at 16 / 20 / 24 in (406 / 508 / 610 mm).

There are two spindles to choose from, and the table prints them side by side. The bore is 104 / 155 mm (4.1 / 6.1 in), the nose D1-11 / A2-11, and the speed range 26 - 2,000 / 10 - 1,400 rpm. A sensible reading is that the 155 mm (6.1 in) bore comes with the A2-11 nose and the slower range, but the page does not state the pairing, so confirm it.

Note the bottom of the speed ranges. Where the smaller Multiturn 4000 starts at 1 rpm, this spindle starts at 26 or 10 rpm depending on the version. Large-diameter threading and facing at very low surface speeds should be checked against those minimums.

Six bed lengths are offered, from 1,500 mm (59.1 in) upward in the usual steps. Swing over the cross slide is 460 mm (18.1 in), which is the working diameter for a shaft running the length of the bed, and the gap opens to 940 mm (37.0 in). As on every Multiturn the control is the Siemens 828D with ShopTurn on a 10.4 in colour screen. Steady rests, hydraulic chucking and tailstock, and a swarf conveyor are on the options list; the standard tailstock is manual.