Universal Grinder

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Knuth Universal Grinder Multi Grind

When we designed the KNUTH Multi-Grind, our goal was to combine all functions of cylindrical, surface, and tool grinding into one machine.

Ideal for tool and die construction, mechanical production, design processes. laboratories and training.

The functionality of the Multi-Grind ranges from external and internal cylindrical grinding to taper grinding. The Multi-Grind also allows easy tool grinding (sharpening of cutters, reamers and turning tools) and is suitable for light surface grinding job.

Three-Point Bearing The custom three-point bearing of the grinding spindle ensures minimum temperature effects and consistent grinding quality.

Feed Drives Hydraulic table feed (longitudinal) with automatic change of direction. An additional manually operated longitudinal feed with hydraulic support allows feed speeds up to 7 m/min.

Grinding Headstock Special grinding headstock design allows simultaneous setup of 2 different grinding wheels. The grinding headstock can be moved in transverse direction and also vertically; and it can be rotated around the vertical axis.

Speeds The headstock operates at 3 different speeds (110, 200, 300 min -1 ), which are set through an easy to operate gear shift lever.

Additional Features... - central lubrication system - sturdy construction - the KNUTH Multi-Grind body is made of solid cast-iron and weight 1300 kg; minimizes vibration effects - electrical components are mounted easily accessible in a control cabinet

Specifications - Multi Grind - Universal Grinder

working area
workpiece diameter (max.)	200 mm
workpiece length (max.)	500 mm
workpiece weight (max.)	10 kg
workpiece width surface grinding	50 mm
workpiece length surface grinding	200 mm
travel X-axis (manual)	200 mm
travel Z-axis	480 mm
inside grinding measures, optimal	Ø10-50 x 75 mm
outside grinding measure, maximum	Ø5-50 x 400 mm
tool grinding measure	200x500 mm
table swivel range (max.)	+45° / -30°
headstock
working headstock swivel range	± 90 °
working spindle taper	MT 2
working spindle speed	(3) 110 - 300 rpm
chuck diameter	100 mm
grinding headstock
grinding spindle speed	2500 rpm
inside grinding spindle speed	13500 rpm
grinding headstock swivel range	± 90 °
feed
feed per hand-wheel rotation X-axis, fine	1 mm
feed per hand-wheel rotation X-axis, rough	4 mm
feed per scale division X-axis, fine	0,005 mm
feed per scale division, X-axis, rough	0,02 mm
scale division of height adjustment	0,01 mm
tailstock
height adjustment per handwheel rotation	1 mm
tailstock taper	MT 2
tailstock quill stroke	14 mm
drive capacity
machine drive capacity	2,525 kW
motor rating grinding spindle	1,1 kW
measures and weights
grinding wheels dimensions	200x20x75 mm
grindstone dimensions, inside grinding (min.)	10x10x3 mm
grindstone dimensions, inside grinding (max.)	25x20x6 mm
overall dimensions	1520x1130x1170 mm
weight	1300 kg

Standard equipment - Multi Grind - Universal Grinder

coolant system, exhaust vacuum, tool mount / indexing head MT 4, internal grinding unit including 2 die grinders, 4 grinding wheels, 3-jaw chuck Ø 100 mm, left tailstock, right tailstock MT 2, center point, half center points, balancing station, spindle extension, vise for surface grinding (3-D angle adjustment), spring stop, 5 drivers, dresser, various splash guards, grinding wheel guard (2x), automatic central lubrication, operator manual, test certificate