Tool Grinders


The all-rounder among grinding machines
  • Grinding diameter 7.9 in
  • Workpiece length (max.) 20 in
  • Working headstock swivel range ± 90°
Part No. 102781

Working Area
Grinding diameter7.9 in
Workpiece length (max.)20 in
Outside grinding measure, maximumØ 0.2-2. x 15.8 in
Inside grinding measures, optimalØ 0.4-2 x 3 in
Tool grinding measure8x20 in
Work piece length surface grinding8 in
Work piece width surface grinding2 in
Workpiece weight (max.)22 lbs
Table swivel range (max.)+45° / -30°
Travel Z-axis19 in
Feed per hand-wheel rotation X-axis, fine0.0394 in
Feed per hand-wheel rotation X-axis, rough0.1575 in
Feed per scale division X-axis, fine0.0002 in
Feed per scale division, X-axis, rough0.00079 in
Scale division of height adjustment0.00039 in
Longitudinal feed speed (hydraulic)0 - 20 fpm
Manual, hydraulic assist23 fpm
Working headstock swivel range± 90°
Working spindle speed(3) 110 - 300 rpm
Working spindle taperMT 2
Chuck diameter4 in
Grinding headstock
Grinding spindle speed2,500 rpm
Inside grinding spindle speed13,500 rpm
Grinding headstock swivel range± 90
Grinding headstock - vertical / - transverse8 in
Height adjustment per handwheel rotation0.04 in
Tailstock taperMT 2
Tailstock quill stroke1 in
Drive Capacity
Machine drive capacity3.4 Hp
Motor rating main drive1.5 Hp
Measures and Weights
Grinding wheel dimensions7.87x0.79x2.95 in
Grindstone dimensions, inside grinding (min.)0.4x0.4x0.1 in
Grindstone dimensions, inside grinding (max.)1x0.8x0.2 in
Overall dimensions (length x width x height)60x54x56 in
Weight2,860 lbs
Part No. 102781

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 jobs.

  • 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 275"/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 rpm) 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 2860 lbs; minimizes vibration effects - electrical components are mounted easily accessible in a control cabinet

  • coolant system
  • exhaust vacuum
  • tool mount / indexing head MT 4
  • internal grinding unit including 2 die grinders
  • 3-jaw chuck (4" diam.)
  • 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
  • various splash guards
  • grinding wheel guard (2x)
  • automatic central lubrication
  • operator manual
  • test certificate