Grinder Jones shipman 540, US $4773 – Picture 0

Grinder Jones shipman 540, US $4773 – Picture 1

Grinder Jones shipman 540, US $4773 – Picture 2

Grinder Jones shipman 540, US $4773 – Picture 3

Grinder Jones shipman 540, US $4773 – Picture 4

Grinder Jones Shipman 540

US $4773

Simi Valley, California, United States
Jan 30th

Open on mobile:
QR code

"Occupying a floor space of just 65" x 32.5 inches ( 1650 x 825 mm) and with an 18" x 6" (450 x 150 mm) table capable of moving 19 inches (480 mm) longitudinally and 6.75 inches (170 mm) in traverse the 540 grinder was ideally suited to most smaller toolroom jobs. The cross slide was supported on two V ways with a feed rate of 0.007" to 0.07" (0.175 to 1.75 mm) per minute at each reversal of the longitudinal stroke. However, early machines had a very much coarser feed, from 0.01" to 0.07" (0.25 to 1.75 mm) - though in practise these are entirely satisfactory for the majority of jobs. The head had a vertical travel of 11 inches (280 mm) and the depth of the largest work piece that could be accommodated on the table (assuming the use of a standard 7-inch (178 mm) diameter grinding wheel) was 9.5 inches ( 240 mm). the cross-feed and vertical-feed micrometer dials were graduated in increments of 0.0001" (0.0025 mm). With a 50 cycle motor the wheel rotated at 3,000 r.p.m. and on 60 cycles (for the American and other markets) 3.600 r.p.m. The 540 was, like all other J & S grinders of the 1940s, fitted with a super-precision ball-bearing supported spindle. The oil temperature was measured by inserting a thermometer through the oil filler cap on the top of the wheelhead. Each slideway - and the hand-traverse wheel bushings - were lubricated automatically from the hydraulic oil supply, though if prolonged hand use was undertaken the makers cautioned against running with the pump motor switched off--when no oil would be circulated and the slides damaged. By the late 1960s the 540 was being fitted with more powerful motors - a 2 h.p. main replacing the 1 h.p. original and that driving the hydraulic pump being upgraded from 0.5 to 0.75 h.p" (lathes. com)